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[PATCH bpf-next 0/5] selftests/bpf: convert test_tc_tunnel.sh to test_progs

by Alexis Lothoré (eBPF Foundation)

Hello, this series aims to convert another test to the test_progs framework to make sure that it is executed in CI for series sent on the mailing list. test_tc_tunnel.sh tests a variety of tunnels based on BPF: packets are encapsulated by a BPF program on the client egress. We then check that those packets can be decapsulated on server ingress side, either thanks to kernel-based or BPF-based decapsulation. Those tests are run thanks to two veths in two dedicated namespaces. - patches 1 to 3 are preparatory patches - patch 4 introduce tc_tunnel test into test_progs - patch 5 gets rid of the test_tc_tunnel.sh script The new test has been executed both in some x86 local qemu machine, as well as in CI: # ./test_progs -a tc_tunnel #454/1 tc_tunnel/ipip_none:OK #454/2 tc_tunnel/ipip6_none:OK #454/3 tc_tunnel/ip6tnl_none:OK #454/4 tc_tunnel/sit_none:OK #454/5 tc_tunnel/vxlan_eth:OK #454/6 tc_tunnel/ip6vxlan_eth:OK #454/7 tc_tunnel/gre_none:OK #454/8 tc_tunnel/gre_eth:OK #454/9 tc_tunnel/gre_mpls:OK #454/10 tc_tunnel/ip6gre_none:OK #454/11 tc_tunnel/ip6gre_eth:OK #454/12 tc_tunnel/ip6gre_mpls:OK #454/13 tc_tunnel/udp_none:OK #454/14 tc_tunnel/udp_eth:OK #454/15 tc_tunnel/udp_mpls:OK #454/16 tc_tunnel/ip6udp_none:OK #454/17 tc_tunnel/ip6udp_eth:OK #454/18 tc_tunnel/ip6udp_mpls:OK #454 tc_tunnel:OK Summary: 1/18 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore(a)bootlin.com> --- Alexis Lothoré (eBPF Foundation) (5): testing/selftests: rename tc_helpers.h to tcx_helpers.h selftests/bpf: add tc helpers selftests/bpf: make test_tc_tunnel.bpf.c compatible with big endian platforms selftests/bpf: integrate test_tc_tunnel.sh tests into test_progs selftests/bpf: remove test_tc_tunnel.sh tools/testing/selftests/bpf/Makefile | 2 +- tools/testing/selftests/bpf/prog_tests/tc_links.c | 46 +- tools/testing/selftests/bpf/prog_tests/tc_netkit.c | 22 +- tools/testing/selftests/bpf/prog_tests/tc_opts.c | 40 +- .../bpf/prog_tests/{tc_helpers.h => tcx_helpers.h} | 6 +- .../selftests/bpf/prog_tests/test_tc_tunnel.c | 684 +++++++++++++++++++++ .../testing/selftests/bpf/prog_tests/test_tunnel.c | 80 +-- tools/testing/selftests/bpf/progs/test_tc_tunnel.c | 99 ++- tools/testing/selftests/bpf/tc_helpers.c | 87 +++ tools/testing/selftests/bpf/tc_helpers.h | 9 + tools/testing/selftests/bpf/test_tc_tunnel.sh | 320 ---------- 11 files changed, 884 insertions(+), 511 deletions(-) --- base-commit: 22267893b8c7f2773896e814800bbe693f206e0c change-id: 20250811-tc_tunnel-c61342683f18 Best regards, -- Alexis Lothoré, Bootlin Embedded Linux and Kernel engineering https://bootlin.com

2 hours, 34 minutes

3
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[RFC PATCH 00/21] VFIO live update support

by Vipin Sharma

Hello, This series adds the live update support in the VFIO PCI subsystem on top of Live Update Orchestrator (LUO) [1]. This series can also be found on GitHub: https://github.com/shvipin/linux vfio/liveupdate/rfc-v1 Goal of live update in VFIO subsystem is to preserve VFIO PCI devices while the host kernel is going through a live update. A preserved device means it can continue to work, perform DMA, not get reset while host under live update gets rebooted via kexec. This series registers VFIO with LUO, implements LUO callbacks, skip DMA clear, skip device reset, preserves and restores a device virtual config during live update. I have added a selftest towards the end of this series, vfio_pci_liveupdate_test, which sets certain properties of a VFIO PCI device, performs a live update, and then validates those properties are still same on the device. Overall flow for a VFIO device going through a live update will be something like: 1. Userspace passes a VFIO cdev FD along with a token to LUO for preservation. 2. LUO passes FD to VFIO subsystem to verify if FD can be preserved. If yes, it increases the refcount on the FD. 3. Eventually, userspace tells LUO to prepare for live update which results in LUO calling prepare() callback to each of its register filesystem handler with the passed FD it should be preparing. 4. VFIO subsystem saves certain properties which will be either lost or hard to recover from the device. 5. VFIO saves the needed data to KHO and provide LUO with the physical address of the data preserved by KHO. 6. Userspace sends FREEZE event to freeze the system. LUO forwards this to each of its registered subsystem. 7. VFIO disables interrupts configured on the device during freeze call. 8. Userspace performs kexec. 9. During kexec reboot, generally, all PCI devices gets their Bus Master Enable bit disabled. In live update case, preserved VFIO devices are skipped. 9. During boot, usual device enumeration happens and LUO also intializes itself. 10. Userspace uses the same token value (step 1), and ask LUO to return VFIO FD corresponding to token. 11. LUO ask VFIO to return VFIO cdev FD corresponding to the token. It gives it the physical address which VFIO returned it in step 5. 12. VFIO restore the KHO data and read the BDF value it saved. It iterates through all of the VFIO device it has in its VFIO cdev class and finds the BDF device. 13. VFIO creates an anonymous inode and file corresponding to the VFIO PCI device and returns it to LUO and LUO returns it to userspace. 14. Now FD returned to userspace works exactly same as if userspace has opened a VFIO device from /dev/vfio/device/* location. 15. It makes usual bind iommufd and attach page table calls. 16. During bind, when VFIO device is internally opened for the first time: - VFIO skips Bus Master Disable - VFIO skips device reset. - VFIO instead of initializing vconfig from the scratch uses the vconfig stored in KHO, and same for few other fields. This is what current series is implementing and validating through selftest. There are other things are which not implemented yet and some are also dependent on other subsystems. For example: 1. Once a device has been prepared, VFIO should not allow any changes to its state from userspace for example, changing PCI config values, resetting the device, etc. 2. Device IOVA is not preserved in this series. This work is done separately in IOMMMUFD live update preservation [2] 3. During PCI device enumeration, PCI subsystem writes to PCI config space, attach device to its original driver if present. This work is being done in PCI preservation [3]. 4. Enabling PCI device done in VFIO subsystem should be handled in PCI subsystem. Current, this patch series hasn't changed the behavior. 5. If live update gets canceled, interrupts which are disabled in freeze need to be reconfigured again. 6. In finish, if a device is not restored, how to know if KHO folio has been restored or not. 6. VFIO cdev is restored in anonymous file system. This should instead be done on devetmpfs For reviewers, following are the grouping of patches in this series: Patches 1-4 ----------- Feel free to ignore if you are only interested in VFIO. These are only for live update selftests. I had to make some changes on top LUO v4 series, to create a library out of them which can be used in other selftests (vfio), and fix some build issues. Patches 5-9 ----------- Adds basic live update support in VFIO. Registers to LUO, saves the device BDF in KHO during prepare, and returns VFIO cdev FD during restore. It doesn't save or skip anything else. Patches 10-17 ------------- Adds support for skipping certain opertions and preserving certain data needed to restore a device. Patches 18-21 ------------- - Integrate VFIO selftest with live update selftest library. - Adds a basic vfio_pci_liveupdate_test test which validates that Bus Master Enable bit is preserved, and virtual config is restored properly. Testing ------- I have done testing on QEMU with a test pci device and also on a bare metal with Intel DSA device. Make sure IDXD driver is not built in your kernel if testing with Intel DSA device. Basically, whichever device you use, it should not get auto-bind to any other driver. Important config options which should be enabled to test this series: - CONFIG_KEXEC_FILE - CONFIG_LIVEUPDATE - CONFIG_KEXEC_HANDOVER Besides this usual VFIO, VFIO_PCI, IOMMU and other dependencies are enabled. To build the test provide KHDR_INCLUDES to your make command if your headers are out-of-tree. KHDR_INCLUDES="-isystem ../../../../build/usr/include" make vfio_pci_liveupdate_test needs to be executed manually. This test needs to be executed two times; one before the live update and second after. ./run.sh -d 0000:00:04.0 vfio_pci_liveupdate_test Next Steps ---------- 1. Looking forward to feedback on this series. - What other things we should save? - Which things should not be saved? - Any locks or incorrect locking done in the series. - Any optimizations. 2. Integration with IOMMUFD and PCI series for complete workflow where a device continues a DMA while undergoing through live update. I will be going on a paternity leave soon, so, my responses gonna be intermittent. David Matlack (dmatlack(a)google.com) has graciously offered to work on this series and continue upstream engagement on this feature until I am back. Thank you, David! [1] LUO-v4: https://lore.kernel.org/linux-mm/20250929010321.3462457-1-pasha.tatashin@so… [2] IOMMUFD: https://lore.kernel.org/linux-iommu/20250928190624.3735830-1-skhawaja@googl… [3] PCI: https://lore.kernel.org/linux-pci/20250916-luo-pci-v2-0-c494053c3c08@kernel… Vipin Sharma (21): selftests/liveupdate: Build tests from the selftests/liveupdate directory selftests/liveupdate: Create library of core live update ioctls selftests/liveupdate: Move do_kexec.sh script to liveupdate/lib selftests/liveupdate: Move LUO ioctls calls to liveupdate library vfio/pci: Register VFIO live update file handler to Live Update Orchestrator vfio/pci: Accept live update preservation request for VFIO cdev vfio/pci: Store VFIO PCI device preservation data in KHO for live update vfio/pci: Retrieve preserved VFIO device for Live Update Orechestrator vfio/pci: Add Live Update finish callback implementation PCI: Add option to skip Bus Master Enable reset during kexec vfio/pci: Skip clearing bus master on live update device during kexec vfio/pci: Skip clearing bus master on live update restored device vfio/pci: Preserve VFIO PCI config space through live update vfio/pci: Skip device reset on live update restored device. PCI: Make PCI saved state and capability structs public vfio/pci: Save and restore the PCI state of the VFIO device vfio/pci: Disable interrupts before going live update kexec vfio: selftests: Build liveupdate library in VFIO selftests vfio: selftests: Initialize vfio_pci_device using a VFIO cdev FD vfio: selftests: Add VFIO live update test vfio: selftests: Validate vconfig preservation of VFIO PCI device during live update drivers/pci/pci-driver.c | 6 +- drivers/pci/pci.c | 5 - drivers/pci/pci.h | 7 - drivers/vfio/pci/Makefile | 1 + drivers/vfio/pci/vfio_pci_config.c | 17 + drivers/vfio/pci/vfio_pci_core.c | 31 +- drivers/vfio/pci/vfio_pci_liveupdate.c | 461 ++++++++++++++++++ drivers/vfio/pci/vfio_pci_priv.h | 17 + drivers/vfio/vfio_main.c | 20 +- include/linux/pci.h | 15 + include/linux/vfio.h | 8 + include/linux/vfio_pci_core.h | 1 + tools/testing/selftests/liveupdate/.gitignore | 7 +- tools/testing/selftests/liveupdate/Makefile | 31 +- .../liveupdate/{ => lib}/do_kexec.sh | 0 .../liveupdate/lib/include/liveupdate_util.h | 27 + .../selftests/liveupdate/lib/libliveupdate.mk | 18 + .../liveupdate/lib/liveupdate_util.c | 106 ++++ .../selftests/liveupdate/luo_multi_file.c | 2 - .../selftests/liveupdate/luo_multi_kexec.c | 2 - .../selftests/liveupdate/luo_multi_session.c | 2 - .../selftests/liveupdate/luo_test_utils.c | 73 +-- .../selftests/liveupdate/luo_test_utils.h | 10 +- .../selftests/liveupdate/luo_unreclaimed.c | 1 - tools/testing/selftests/vfio/Makefile | 15 +- .../selftests/vfio/lib/include/vfio_util.h | 1 + .../selftests/vfio/lib/vfio_pci_device.c | 33 +- .../selftests/vfio/vfio_pci_liveupdate_test.c | 116 +++++ 28 files changed, 900 insertions(+), 133 deletions(-) create mode 100644 drivers/vfio/pci/vfio_pci_liveupdate.c rename tools/testing/selftests/liveupdate/{ => lib}/do_kexec.sh (100%) create mode 100644 tools/testing/selftests/liveupdate/lib/include/liveupdate_util.h create mode 100644 tools/testing/selftests/liveupdate/lib/libliveupdate.mk create mode 100644 tools/testing/selftests/liveupdate/lib/liveupdate_util.c create mode 100644 tools/testing/selftests/vfio/vfio_pci_liveupdate_test.c base-commit: e48be01cadc981362646dc3a87d57316421590a5 -- 2.51.0.858.gf9c4a03a3a-goog

3 hours, 4 minutes

3
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[RFC PATCH 0/4] selftests/damon: add a test for obsolete_target sysfs file

by SeongJae Park

An RFC patch series [1] that add a new DAMON sysfs file for arbitrary targets removal is under review. Add a selftest for the feature. The new test uses the feature using the python wrapper of DAMON sysfs interface, and confirm the expected internal data structure change is made using drgn. So this patch series may better to be a part of the other one [1] that introduces the obsolete_target file. But, because no significant change is requested on the series so far, I'm posting this as an individual RFC. In the next version, I may merge the two series into one, to add all related changes at one step. [1] https://lore.kernel.org/20251016214736.84286-1-sj@kernel.org SeongJae Park (4): selftests/damon/_damon_sysfs: support obsolete_target file drgn_dump_damon_status: dump damon_target->obsolete sysfs.py: extend assert_ctx_committed() for monitoring targets selftests/damon/sysfs: add obsolete_target test tools/testing/selftests/damon/_damon_sysfs.py | 11 ++++- .../selftests/damon/drgn_dump_damon_status.py | 1 + tools/testing/selftests/damon/sysfs.py | 48 +++++++++++++++++++ 3 files changed, 58 insertions(+), 2 deletions(-) base-commit: 1aba8bd57e6aaa1c9e699c8de66bcc931d4b1116 -- 2.47.3

14 hours, 35 minutes

1
4
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[PATCH v6 00/10] liveupdate: Rework KHO for in-kernel users & Fix memory corruption

by Pasha Tatashin

This series addresses comments and combines into one the two series [1] and [2], and adds review-bys. This series refactors the KHO framework to better support in-kernel users like the upcoming LUO. The current design, which relies on a notifier chain and debugfs for control, is too restrictive for direct programmatic use. The core of this rework is the removal of the notifier chain in favor of a direct registration API. This decouples clients from the shutdown-time finalization sequence, allowing them to manage their preserved state more flexibly and at any time. Also, this series fixes a memory corruption bug in KHO that occurs when KFENCE is enabled. The root cause is that KHO metadata, allocated via kzalloc(), can be randomly serviced by kfence_alloc(). When a kernel boots via KHO, the early memblock allocator is restricted to a "scratch area". This forces the KFENCE pool to be allocated within this scratch area, creating a conflict. If KHO metadata is subsequently placed in this pool, it gets corrupted during the next kexec operation. [1] https://lore.kernel.org/all/20251007033100.836886-1-pasha.tatashin@soleen.c… [2] https://lore.kernel.org/all/20251015053121.3978358-1-pasha.tatashin@soleen.… Mike Rapoport (Microsoft) (1): kho: drop notifiers Pasha Tatashin (9): kho: allow to drive kho from within kernel kho: make debugfs interface optional kho: add interfaces to unpreserve folios and page ranes kho: don't unpreserve memory during abort liveupdate: kho: move to kernel/liveupdate kho: move kho debugfs directory to liveupdate liveupdate: kho: warn and fail on metadata or preserved memory in scratch area liveupdate: kho: Increase metadata bitmap size to PAGE_SIZE liveupdate: kho: allocate metadata directly from the buddy allocator Documentation/core-api/kho/concepts.rst | 2 +- MAINTAINERS | 3 +- include/linux/kexec_handover.h | 53 +- init/Kconfig | 2 + kernel/Kconfig.kexec | 15 - kernel/Makefile | 2 +- kernel/liveupdate/Kconfig | 38 ++ kernel/liveupdate/Makefile | 5 + kernel/{ => liveupdate}/kexec_handover.c | 588 +++++++++----------- kernel/liveupdate/kexec_handover_debug.c | 25 + kernel/liveupdate/kexec_handover_debugfs.c | 216 +++++++ kernel/liveupdate/kexec_handover_internal.h | 56 ++ lib/test_kho.c | 30 +- mm/memblock.c | 62 +-- tools/testing/selftests/kho/init.c | 2 +- tools/testing/selftests/kho/vmtest.sh | 1 + 16 files changed, 645 insertions(+), 455 deletions(-) create mode 100644 kernel/liveupdate/Kconfig create mode 100644 kernel/liveupdate/Makefile rename kernel/{ => liveupdate}/kexec_handover.c (78%) create mode 100644 kernel/liveupdate/kexec_handover_debug.c create mode 100644 kernel/liveupdate/kexec_handover_debugfs.c create mode 100644 kernel/liveupdate/kexec_handover_internal.h base-commit: f406055cb18c6e299c4a783fc1effeb16be41803 -- 2.51.0.915.g61a8936c21-goog

18 hours, 2 minutes

1
10
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[PATCH v4 net-next 00/13] AccECN protocol case handling series

by chia-yu.chang＠nokia-bell-labs.com

From: Chia-Yu Chang <chia-yu.chang(a)nokia-bell-labs.com> Hello, Plesae find the v4 AccECN case handling patch series, which covers several excpetional case handling of Accurate ECN spec (RFC9768), adds new identifiers to be used by CC modules, adds ecn_delta into rate_sample, and keeps the ACE counter for computation, etc. This patch series is part of the full AccECN patch series, which is available at https://github.com/L4STeam/linux-net-next/commits/upstream_l4steam/ Best regards, Chia-Yu --- v4: - Add previous #13 in v2 back after dicussion with the RFC author. - Add TCP_ACCECN_OPTION_PERSIST to tcp_ecn_option sysctl to ignore AccECN fallback policy on sending AccECN option. v3: - Add additional min() check if pkts_acked_ewma is not initialized in #1. - Change TCP_CONG_WANTS_ECT_1 into individual flag add helper function INET_ECN_xmit_wants_ect_1() in #3. - Add empty line between variable declarations and code in #4. - Update commit message to fix old AccECN commits in #5. - Remove unnecessary brackets in #10. - Move patch #3 in v2 to a later Prague patch serise and remove patch #13 in v2. --- Chia-Yu Chang (11): tcp: L4S ECT(1) identifier and NEEDS_ACCECN for CC modules tcp: disable RFC3168 fallback identifier for CC modules tcp: accecn: handle unexpected AccECN negotiation feedback tcp: accecn: retransmit downgraded SYN in AccECN negotiation tcp: move increment of num_retrans tcp: accecn: retransmit SYN/ACK without AccECN option or non-AccECN SYN/ACK tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion tcp: accecn: fallback outgoing half link to non-AccECN tcp: accecn: verify ACE counter in 1st ACK after AccECN negotiation tcp: accecn: detect loss ACK w/ AccECN option and add TCP_ACCECN_OPTION_PERSIST tcp: accecn: enable AccECN Ilpo Järvinen (2): tcp: try to avoid safer when ACKs are thinned gro: flushing when CWR is set negatively affects AccECN Documentation/networking/ip-sysctl.rst | 4 +- .../networking/net_cachelines/tcp_sock.rst | 1 + include/linux/tcp.h | 4 +- include/net/inet_ecn.h | 20 +++- include/net/tcp.h | 32 ++++++- include/net/tcp_ecn.h | 92 ++++++++++++++----- net/ipv4/sysctl_net_ipv4.c | 4 +- net/ipv4/tcp.c | 2 + net/ipv4/tcp_cong.c | 10 +- net/ipv4/tcp_input.c | 58 ++++++++++-- net/ipv4/tcp_minisocks.c | 40 +++++--- net/ipv4/tcp_offload.c | 3 +- net/ipv4/tcp_output.c | 42 ++++++--- 13 files changed, 241 insertions(+), 71 deletions(-) -- 2.34.1

19 hours, 13 minutes

5
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[PATCH 0/2] KHO: Fix metadata allocation in scratch area

by Pasha Tatashin

This series fixes a memory corruption bug in KHO that occurs when KFENCE is enabled. The root cause is that KHO metadata, allocated via kzalloc(), can be randomly serviced by kfence_alloc(). When a kernel boots via KHO, the early memblock allocator is restricted to a "scratch area". This forces the KFENCE pool to be allocated within this scratch area, creating a conflict. If KHO metadata is subsequently placed in this pool, it gets corrupted during the next kexec operation. The series is structured in two parts: Patch 1/2 introduces a debug-only feature (CONFIG_KEXEC_HANDOVER_DEBUG) that adds checks to detect and fail any operation that attempts to place KHO metadata or preserved memory within the scratch area. This serves as a validation and diagnostic tool to confirm the problem without affecting production builds. Patch 2/2 provides the fix by modifying KHO to allocate its metadata directly from the buddy allocator instead of SLUB. This bypasses the KFENCE interception entirely. Pasha Tatashin (2): liveupdate: kho: warn and fail on metadata or preserved memory in scratch area liveupdate: kho: allocate metadata directly from the buddy allocator kernel/liveupdate/Kconfig | 15 ++++++ kernel/liveupdate/kexec_handover.c | 51 ++++++++++++++++----- kernel/liveupdate/kexec_handover_debug.c | 18 ++++++++ kernel/liveupdate/kexec_handover_internal.h | 9 ++++ 4 files changed, 81 insertions(+), 12 deletions(-) base-commit: 0b2f041c47acb45db82b4e847af6e17eb66cd32d -- 2.51.0.788.g6d19910ace-goog

19 hours, 48 minutes

4
16
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[PATCH bpf-next v5 00/15] selftests/bpf: Integrate test_xsk.c to test_progs framework

by Bastien Curutchet (eBPF Foundation)

Hi all, Now that the merge window is over, here's a respin of the previous iteration rebased on the latest bpf-next_base. The bug triggering the XDP_ADJUST_TAIL_SHRINK_MULTI_BUFF failure when CONFIG_DEBUG_VM is enabled hasn't been fixed yet so I've moved the test to the flaky table. The test_xsk.sh script covers many AF_XDP use cases. The tests it runs are defined in xksxceiver.c. Since this script is used to test real hardware, the goal here is to leave it as it is, and only integrate the tests that run on veth peers into the test_progs framework. Some tests are flaky so they can't be integrated in the CI as they are. I think that fixing their flakyness would require a significant amount of work. So, as first step, I've excluded them from the list of tests migrated to the CI (cf PATCH 14). If these tests get fixed at some point, integrating them into the CI will be straightforward. PATCH 1 extracts test_xsk[.c/.h] from xskxceiver[.c/.h] to make the tests available to test_progs. PATCH 2 to 7 fix small issues in the current test PATCH 8 to 13 handle all errors to release resources instead of calling exit() when any error occurs. PATCH 14 isolates some flaky tests PATCH 15 integrate the non-flaky tests to the test_progs framework Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet(a)bootlin.com> --- Changes in v5: - Rebase on latest bpf-next_base - Move XDP_ADJUST_TAIL_SHRINK_MULTI_BUFF to the flaky table - Add Maciej's reviewed-by - Link to v4: https://lore.kernel.org/r/20250924-xsk-v4-0-20e57537b876@bootlin.com Changes in v4: - Fix test_xsk.sh's summary report. - Merge PATCH 11 & 12 together, otherwise PATCH 11 fails to build. - Split old PATCH 3 in two patches. The first one fixes testapp_stats_rx_dropped(), the second one fixes testapp_xdp_shared_umem(). The unecessary frees (in testapp_stats_rx_full() and testapp_stats_fill_empty() are removed) - Link to v3: https://lore.kernel.org/r/20250904-xsk-v3-0-ce382e331485@bootlin.com Changes in v3: - Rebase on latest bpf-next_base to integrate commit c9110e6f7237 ("selftests/bpf: Fix count write in testapp_xdp_metadata_copy()"). - Move XDP_METADATA_COPY_* tests from flaky-tests to nominal tests - Link to v2: https://lore.kernel.org/r/20250902-xsk-v2-0-17c6345d5215@bootlin.com Changes in v2: - Rebase on the latest bpf-next_base and integrate the newly added tests to the work (adjust_tail* and tx_queue_consumer tests) - Re-order patches to split xkxceiver sooner. - Fix the bug reported by Maciej. - Fix verbose mode in test_xsk.sh by keeping kselftest (remove PATCH 1, 7 and 8) - Link to v1: https://lore.kernel.org/r/20250313-xsk-v1-0-7374729a93b9@bootlin.com --- Bastien Curutchet (eBPF Foundation) (15): selftests/bpf: test_xsk: Split xskxceiver selftests/bpf: test_xsk: Initialize bitmap before use selftests/bpf: test_xsk: Fix __testapp_validate_traffic()'s return value selftests/bpf: test_xsk: fix memory leak in testapp_stats_rx_dropped() selftests/bpf: test_xsk: fix memory leak in testapp_xdp_shared_umem() selftests/bpf: test_xsk: Wrap test clean-up in functions selftests/bpf: test_xsk: Release resources when swap fails selftests/bpf: test_xsk: Add return value to init_iface() selftests/bpf: test_xsk: Don't exit immediately when xsk_attach fails selftests/bpf: test_xsk: Don't exit immediately when gettimeofday fails selftests/bpf: test_xsk: Don't exit immediately when workers fail selftests/bpf: test_xsk: Don't exit immediately if validate_traffic fails selftests/bpf: test_xsk: Don't exit immediately on allocation failures selftests/bpf: test_xsk: Isolate flaky tests selftests/bpf: test_xsk: Integrate test_xsk.c to test_progs framework tools/testing/selftests/bpf/Makefile | 11 +- tools/testing/selftests/bpf/prog_tests/test_xsk.c | 2595 ++++++++++++++++++++ tools/testing/selftests/bpf/prog_tests/test_xsk.h | 294 +++ tools/testing/selftests/bpf/prog_tests/xsk.c | 146 ++ tools/testing/selftests/bpf/xskxceiver.c | 2696 +-------------------- tools/testing/selftests/bpf/xskxceiver.h | 156 -- 6 files changed, 3174 insertions(+), 2724 deletions(-) --- base-commit: bd61720310e0b11bfbb7c8e1f373bb87d98451d4 change-id: 20250218-xsk-0cf90e975d14 Best regards, -- Bastien Curutchet (eBPF Foundation) <tux(a)bootlin.com>

1 day

3
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[PATCH net-next] bonding: show master index when dumping slave info

by Hangbin Liu

Currently, there is no straightforward way to obtain the master/slave relationship via netlink. Users have to retrieve all slaves through sysfs to determine these relationships. To address this, we can either list all slaves under the bond interface or display the master index in each slave. Since the number of slaves could be quite large (e.g., 100+), it is more efficient to show the master information in the slave entry. Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com> --- drivers/net/bonding/bond_netlink.c | 4 ++++ include/uapi/linux/if_link.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c index 286f11c517f7..ff3f11674a8b 100644 --- a/drivers/net/bonding/bond_netlink.c +++ b/drivers/net/bonding/bond_netlink.c @@ -29,6 +29,7 @@ static size_t bond_get_slave_size(const struct net_device *bond_dev, nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */ nla_total_size(sizeof(s32)) + /* IFLA_BOND_SLAVE_PRIO */ nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_ACTOR_PORT_PRIO */ + nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_MASTER */ 0; } @@ -38,6 +39,9 @@ static int bond_fill_slave_info(struct sk_buff *skb, { struct slave *slave = bond_slave_get_rtnl(slave_dev); + if (nla_put_u32(skb, IFLA_BOND_SLAVE_MASTER, bond_dev->ifindex)) + goto nla_put_failure; + if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave))) goto nla_put_failure; diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 3b491d96e52e..bad41a1807f7 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -1567,6 +1567,7 @@ enum { IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE, IFLA_BOND_SLAVE_PRIO, IFLA_BOND_SLAVE_ACTOR_PORT_PRIO, + IFLA_BOND_SLAVE_MASTER, __IFLA_BOND_SLAVE_MAX, }; -- 2.50.1

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Re: [PATCH 1/1] Use new `--output-format=doctest` rustdoc command line flag to improve doctest handling

by Miguel Ojeda

On Tue, 17 Jun 2025 16:00:33 +0200 Guillaume Gomez <guillaume1.gomez(a)gmail.com> wrote: > > The goal of this patch is to remove the use of 2 unstable > rustdoc features (`--no-run` and `--test-builder`) and replace it with a > stable feature: `--output-format=doctest`, which was added in > https://github.com/rust-lang/rust/pull/134531. > > Before this patch, the code was using very hacky methods in order to retrieve > doctests, modify them as needed and then concatenate all of them in one file. > > Now, with this new flag, it instead asks rustdoc to provide the doctests > code with their associated information such as file path and line number. > > Signed-off-by: Guillaume Gomez <guillaume1.gomez(a)gmail.com> > --- (Procedural bit: normally we provide a changelog between versions after this `---` line so that reviewers now what changed so far.) I finally took a look at this again, so I rebased it and got: thread 'main' panicked at scripts/rustdoc_test_gen.rs:92:15: No path candidates found for `rust_kernel_alloc_allocator.rs`.This is likely a bug in the build system, or some files went away while compiling. which brings me to the bigger point: the main reason to have the new output format is to avoid all these hacks, including the "find the real path back to the original file" hack here. More generally, to avoid the 2 scripts approach. So now we can finally get rid of all that and simplify. That is, we can just merge it all in a single script that reads the JSON and builds the result directly, since now we have everything we need (originally I needed the 2 scripts approach since `rustdoc` executed the test builder once per test so I had to somehow collect the results). i.e. no more hundreds of generated files/processes, just a simple pipe. Anyway, just to check we had everything we needed, I did a quick try -- please see the draft patch below. I gave it a go -- please see the draft patch below. The diff w.r.t. your patch would be something like +217 -341, i.e. we get rid of quite a lot of lines. I added as well some more context in the commit message, and put the right docs in the unified script. This also improves the sorting of the tests (it now follows the line number better). We still have to preserve the support for the old compilers, so what I think I will do is just have the new script separately, keeping the old ones as-is until we can remove them when we upgrade the minimum for e.g. the next Debian Stable. Cc'ing David and KUnit, since this is closer to getting ready -- please let me know if this raises alarms for anyone. Thanks! Cheers, Miguel From 4aa4581e9004cb95534805f73fdae56c454b3d1d Mon Sep 17 00:00:00 2001 From: Guillaume Gomez <guillaume1.gomez(a)gmail.com> Date: Tue, 17 Jun 2025 16:00:33 +0200 Subject: [PATCH] [TODO] rust: use new `rustdoc`'s `--output-format=doctest` The goal of this patch is to remove the use of 2 unstable `rustdoc` features (`--no-run` and `--test-builder`) and replace it with a future stable feature: `--output-format=doctest` [1]. Before this patch, the KUnit Rust doctests generation needed to employ several hacks in order to retrieve doctests, modify them as needed and then concatenate all of them in one file. In particular, it required using two scripts: one that got run as a test builder by `rustdoc` in order to extract the data and another that collected the results of all those processes. We requested upstream `rustdoc` a feature to get `rustdoc` to generate the information directly -- one that would also be designed to eventually be made stable. This resulted in the `--output-format=doctest` flag, which makes all the information neatly available as a JSON output, including filenames, line numbers, doctest test bodies and so on. Thus take advantage of the new flag, which in turn allows to just use a single script that gets piped that JSON output from the compiler and uses it to directly build the generated files to be run by KUnit. Link: https://github.com/rust-lang/rust/issues/134529 [1] Signed-off-by: Guillaume Gomez <guillaume1.gomez(a)gmail.com> Co-developed-by: Miguel Ojeda <ojeda(a)kernel.org> Signed-off-by: Miguel Ojeda <ojeda(a)kernel.org> --- rust/Makefile | 12 +- scripts/.gitignore | 1 - scripts/Makefile | 2 - scripts/json.rs | 235 +++++++++++++++++++++++++ scripts/remove-stale-files | 2 + scripts/rustdoc_test_builder.rs | 300 ++++++++++++++++++++++++++------ scripts/rustdoc_test_gen.rs | 265 ---------------------------- 7 files changed, 485 insertions(+), 332 deletions(-) create mode 100644 scripts/json.rs delete mode 100644 scripts/rustdoc_test_gen.rs diff --git a/rust/Makefile b/rust/Makefile index 23c7ae905bd2..93bc456e3576 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -57,7 +57,6 @@ RUST_LIB_SRC ?= $(rustc_sysroot)/lib/rustlib/src/rust/library ifneq ($(quiet),) rust_test_quiet=-q rustdoc_test_quiet=--test-args -q -rustdoc_test_kernel_quiet=>/dev/null endif core-cfgs = \ @@ -224,21 +223,20 @@ quiet_cmd_rustdoc_test_kernel = RUSTDOC TK $< rm -rf $(objtree)/$(obj)/test/doctests/kernel; \ mkdir -p $(objtree)/$(obj)/test/doctests/kernel; \ OBJTREE=$(abspath $(objtree)) \ - $(RUSTDOC) --test $(filter-out --remap-path-prefix=%,$(rust_flags)) \ + $(RUSTDOC) $(filter-out --remap-path-prefix=%,$(rust_flags)) \ -L$(objtree)/$(obj) --extern ffi --extern pin_init \ --extern kernel --extern build_error --extern macros \ --extern bindings --extern uapi \ - --no-run --crate-name kernel -Zunstable-options \ + --crate-name kernel -Zunstable-options \ --sysroot=/dev/null \ + --output-format=doctest \ $(rustdoc_modifiers_workaround) \ - --test-builder $(objtree)/scripts/rustdoc_test_builder \ - $< $(rustdoc_test_kernel_quiet); \ - $(objtree)/scripts/rustdoc_test_gen + $< | $(objtree)/scripts/rustdoc_test_builder %/doctests_kernel_generated.rs %/doctests_kernel_generated_kunit.c: \ $(src)/kernel/lib.rs $(obj)/kernel.o \ $(objtree)/scripts/rustdoc_test_builder \ - $(objtree)/scripts/rustdoc_test_gen FORCE + FORCE +$(call if_changed,rustdoc_test_kernel) # We cannot use `-Zpanic-abort-tests` because some tests are dynamic, diff --git a/scripts/.gitignore b/scripts/.gitignore index c2ef68848da5..6e6ab7b8f496 100644 --- a/scripts/.gitignore +++ b/scripts/.gitignore @@ -7,7 +7,6 @@ /module.lds /recordmcount /rustdoc_test_builder -/rustdoc_test_gen /sign-file /sorttable /target.json diff --git a/scripts/Makefile b/scripts/Makefile index 46f860529df5..71c7d9dcd95b 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -10,7 +10,6 @@ hostprogs-always-$(CONFIG_ASN1) += asn1_compiler hostprogs-always-$(CONFIG_MODULE_SIG_FORMAT) += sign-file hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert hostprogs-always-$(CONFIG_RUST_KERNEL_DOCTESTS) += rustdoc_test_builder -hostprogs-always-$(CONFIG_RUST_KERNEL_DOCTESTS) += rustdoc_test_gen ifneq ($(or $(CONFIG_X86_64),$(CONFIG_X86_32)),) always-$(CONFIG_RUST) += target.json @@ -23,7 +22,6 @@ endif hostprogs += generate_rust_target generate_rust_target-rust := y rustdoc_test_builder-rust := y -rustdoc_test_gen-rust := y HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include HOSTLDLIBS_sorttable = -lpthread diff --git a/scripts/json.rs b/scripts/json.rs new file mode 100644 index 000000000000..aff24bfd9213 --- /dev/null +++ b/scripts/json.rs @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0 + +//! JSON parser used to parse rustdoc output when retrieving doctests. + +use std::collections::HashMap; +use std::iter::Peekable; +use std::str::FromStr; + +#[derive(Debug, PartialEq, Eq)] +pub(crate) enum JsonValue { + Object(HashMap<String, JsonValue>), + String(String), + Number(i32), + Bool(bool), + Array(Vec<JsonValue>), + Null, +} + +fn parse_ident<I: Iterator<Item = char>>( + iter: &mut I, + output: JsonValue, + ident: &str, +) -> Result<JsonValue, String> { + let mut ident_iter = ident.chars().skip(1); + + loop { + let i = ident_iter.next(); + if i.is_none() { + return Ok(output); + } + let c = iter.next(); + if i != c { + if let Some(c) = c { + return Err(format!("Unexpected character `{c}` when parsing `{ident}`")); + } + return Err(format!("Missing character when parsing `{ident}`")); + } + } +} + +fn parse_string<I: Iterator<Item = char>>(iter: &mut I) -> Result<JsonValue, String> { + let mut out = String::new(); + + while let Some(c) = iter.next() { + match c { + '\\' => { + let Some(c) = iter.next() else { break }; + match c { + '"' | '\\' | '/' => out.push(c), + 'b' => out.push(char::from(0x8u8)), + 'f' => out.push(char::from(0xCu8)), + 't' => out.push('\t'), + 'r' => out.push('\r'), + 'n' => out.push('\n'), + _ => { + // This code doesn't handle codepoints so we put the string content as is. + out.push('\\'); + out.push(c); + } + } + } + '"' => { + return Ok(JsonValue::String(out)); + } + _ => out.push(c), + } + } + Err(format!("Unclosed JSON string `{out}`")) +} + +fn parse_number<I: Iterator<Item = char>>( + iter: &mut Peekable<I>, + digit: char, +) -> Result<JsonValue, String> { + let mut nb = String::new(); + + nb.push(digit); + loop { + // We peek next character to prevent taking it from the iterator in case it's a comma. + if matches!(iter.peek(), Some(',' | '}' | ']')) { + break; + } + let Some(c) = iter.next() else { break }; + if c.is_whitespace() { + break; + } else if !c.is_ascii_digit() { + return Err(format!("Error when parsing number `{nb}`: found `{c}`")); + } + nb.push(c); + } + i32::from_str(&nb) + .map(|nb| JsonValue::Number(nb)) + .map_err(|error| format!("Invalid number: `{error}`")) +} + +fn parse_array<I: Iterator<Item = char>>(iter: &mut Peekable<I>) -> Result<JsonValue, String> { + let mut values = Vec::new(); + + 'main: loop { + let Some(c) = iter.next() else { + return Err("Unclosed array".to_string()); + }; + if c.is_whitespace() { + continue; + } else if c == ']' { + break; + } + values.push(parse(iter, c)?); + while let Some(c) = iter.next() { + if c.is_whitespace() { + continue; + } else if c == ',' { + break; + } else if c == ']' { + break 'main; + } else { + return Err(format!("Unexpected `{c}` when parsing array")); + } + } + } + Ok(JsonValue::Array(values)) +} + +fn parse_object<I: Iterator<Item = char>>(iter: &mut Peekable<I>) -> Result<JsonValue, String> { + let mut values = HashMap::new(); + + 'main: loop { + let Some(c) = iter.next() else { + return Err("Unclosed object".to_string()); + }; + let key; + if c.is_whitespace() { + continue; + } else if c == '"' { + let JsonValue::String(k) = parse_string(iter)? else { + unreachable!() + }; + key = k; + } else if c == '}' { + break; + } else { + return Err(format!("Expected `\"` when parsing Object, found `{c}`")); + } + + // We then get the `:` separator. + loop { + let Some(c) = iter.next() else { + return Err(format!("Missing value after key `{key}`")); + }; + if c.is_whitespace() { + continue; + } else if c == ':' { + break; + } else { + return Err(format!( + "Expected `:` after key, found `{c}` when parsing object" + )); + } + } + // Then the value. + let value = loop { + let Some(c) = iter.next() else { + return Err(format!("Missing value after key `{key}`")); + }; + if c.is_whitespace() { + continue; + } else { + break parse(iter, c)?; + } + }; + + if values.contains_key(&key) { + return Err(format!("Duplicated key `{key}`")); + } + values.insert(key, value); + + while let Some(c) = iter.next() { + if c.is_whitespace() { + continue; + } else if c == ',' { + break; + } else if c == '}' { + break 'main; + } else { + return Err(format!("Unexpected `{c}` when parsing array")); + } + } + } + Ok(JsonValue::Object(values)) +} + +fn parse<I: Iterator<Item = char>>(iter: &mut Peekable<I>, c: char) -> Result<JsonValue, String> { + match c { + '{' => parse_object(iter), + '"' => parse_string(iter), + '[' => parse_array(iter), + 't' => parse_ident(iter, JsonValue::Bool(true), "true"), + 'f' => parse_ident(iter, JsonValue::Bool(false), "false"), + 'n' => parse_ident(iter, JsonValue::Null, "null"), + c => { + if c.is_ascii_digit() || c == '-' { + parse_number(iter, c) + } else { + Err(format!("Unexpected `{c}` character")) + } + } + } +} + +impl JsonValue { + pub(crate) fn parse(input: &str) -> Result<Self, String> { + let mut iter = input.chars().peekable(); + let mut value = None; + + while let Some(c) = iter.next() { + if c.is_whitespace() { + continue; + } + value = Some(parse(&mut iter, c)?); + break; + } + while let Some(c) = iter.next() { + if c.is_whitespace() { + continue; + } else { + return Err(format!("Unexpected character `{c}` after content")); + } + } + if let Some(value) = value { + Ok(value) + } else { + Err("Empty content".to_string()) + } + } +} diff --git a/scripts/remove-stale-files b/scripts/remove-stale-files index 6e39fa8540df..190dee6b50e8 100755 --- a/scripts/remove-stale-files +++ b/scripts/remove-stale-files @@ -26,3 +26,5 @@ rm -f scripts/selinux/genheaders/genheaders rm -f *.spec rm -f lib/test_fortify.log + +rm -f scripts/rustdoc_test_gen diff --git a/scripts/rustdoc_test_builder.rs b/scripts/rustdoc_test_builder.rs index f7540bcf595a..dd65bb670d25 100644 --- a/scripts/rustdoc_test_builder.rs +++ b/scripts/rustdoc_test_builder.rs @@ -1,74 +1,260 @@ // SPDX-License-Identifier: GPL-2.0 -//! Test builder for `rustdoc`-generated tests. +//! Generates KUnit tests from `rustdoc`-generated doctests. //! -//! This script is a hack to extract the test from `rustdoc`'s output. Ideally, `rustdoc` would -//! have an option to generate this information instead, e.g. as JSON output. +//! KUnit passes a context (`struct kunit *`) to each test, which should be forwarded to the other +//! KUnit functions and macros. //! -//! The `rustdoc`-generated test names look like `{file}_{line}_{number}`, e.g. -//! `...path_rust_kernel_sync_arc_rs_42_0`. `number` is the "test number", needed in cases like -//! a macro that expands into items with doctests is invoked several times within the same line. +//! However, we want to keep this as an implementation detail because: //! -//! However, since these names are used for bisection in CI, the line number makes it not stable -//! at all. In the future, we would like `rustdoc` to give us the Rust item path associated with -//! the test, plus a "test number" (for cases with several examples per item) and generate a name -//! from that. For the moment, we generate ourselves a new name, `{file}_{number}` instead, in -//! the `gen` script (done there since we need to be aware of all the tests in a given file). +//! - Test code should not care about the implementation. +//! +//! - Documentation looks worse if it needs to carry extra details unrelated to the piece +//! being described. +//! +//! - Test code should be able to define functions and call them, without having to carry +//! the context. +//! +//! - Later on, we may want to be able to test non-kernel code (e.g. `core` or third-party +//! crates) which likely use the standard library `assert*!` macros. +//! +//! For this reason, instead of the passed context, `kunit_get_current_test()` is used instead +//! (i.e. `current->kunit_test`). +//! +//! Note that this means other threads/tasks potentially spawned by a given test, if failing, will +//! report the failure in the kernel log but will not fail the actual test. Saving the pointer in +//! e.g. a `static` per test does not fully solve the issue either, because currently KUnit does +//! not support assertions (only expectations) from other tasks. Thus leave that feature for +//! the future, which simplifies the code here too. We could also simply not allow `assert`s in +//! other tasks, but that seems overly constraining, and we do want to support them, eventually. -use std::io::Read; +use std::{ + fs::File, + io::{BufWriter, Read, Write}, +}; + +use json::JsonValue; + +mod json; fn main() { let mut stdin = std::io::stdin().lock(); - let mut body = String::new(); - stdin.read_to_string(&mut body).unwrap(); + let mut rustdoc_json = String::new(); + stdin.read_to_string(&mut rustdoc_json).unwrap(); - // Find the generated function name looking for the inner function inside `main()`. - // - // The line we are looking for looks like one of the following: - // - // ``` - // fn main() { #[allow(non_snake_case)] fn _doctest_main_rust_kernel_file_rs_28_0() { - // fn main() { #[allow(non_snake_case)] fn _doctest_main_rust_kernel_file_rs_37_0() -> Result<(), impl ::core::fmt::Debug> { - // ``` - // - // It should be unlikely that doctest code matches such lines (when code is formatted properly). - let rustdoc_function_name = body - .lines() - .find_map(|line| { - Some( - line.split_once("fn main() {")? - .1 - .split_once("fn ")? - .1 - .split_once("()")? - .0, - ) - .filter(|x| x.chars().all(|c| c.is_alphanumeric() || c == '_')) - }) - .expect("No test function found in `rustdoc`'s output."); - - // Qualify `Result` to avoid the collision with our own `Result` coming from the prelude. - let body = body.replace( - &format!("{rustdoc_function_name}() -> Result<(), impl ::core::fmt::Debug> {{"), - &format!( - "{rustdoc_function_name}() -> ::core::result::Result<(), impl ::core::fmt::Debug> {{" - ), + let JsonValue::Object(rustdoc) = JsonValue::parse(&rustdoc_json).unwrap() else { + panic!("Expected an object") + }; + + let Some(JsonValue::Number(format_version)) = rustdoc.get("format_version") else { + panic!("missing `format_version` field"); + }; + assert!( + *format_version == 2, + "unsupported rustdoc format version: {format_version}" ); - // For tests that get generated with `Result`, like above, `rustdoc` generates an `unwrap()` on - // the return value to check there were no returned errors. Instead, we use our assert macro - // since we want to just fail the test, not panic the kernel. + let Some(JsonValue::Array(doctests)) = rustdoc.get("doctests") else { + panic!("`doctests` field is missing or has the wrong type"); + }; + + let mut nb_generated = 0; + let mut number = 0; + let mut last_file = ""; + let mut rust_tests = String::new(); + let mut c_test_declarations = String::new(); + let mut c_test_cases = String::new(); + for doctest in doctests { + let JsonValue::Object(doctest) = doctest else { + unreachable!() + }; + + // We check if we need to skip this test by checking it's a rust code and it's not ignored. + if let Some(JsonValue::Object(attributes)) = doctest.get("doctest_attributes") { + if attributes.get("rust") != Some(&JsonValue::Bool(true)) { + continue; + } + if let Some(JsonValue::String(ignore)) = attributes.get("ignore") { + if ignore != "None" { + continue; + } + } + } + + let ( + Some(JsonValue::String(file)), + Some(JsonValue::Number(line)), + Some(JsonValue::String(name)), + Some(JsonValue::Object(doctest_code)), + ) = ( + doctest.get("file"), + doctest.get("line"), + doctest.get("name"), + doctest.get("doctest_code"), + ) + else { + continue; + }; + + let ( + Some(JsonValue::String(code)), + Some(JsonValue::String(crate_level_code)), + Some(JsonValue::Object(wrapper)), + ) = ( + doctest_code.get("code"), + doctest_code.get("crate_level"), + doctest_code.get("wrapper"), + ) + else { + continue; + }; + + let (Some(JsonValue::String(before)), Some(JsonValue::String(after))) = + (wrapper.get("before"), wrapper.get("after")) + else { + continue; + }; + + // For tests that get generated with `Result`, `rustdoc` generates an `unwrap()` on + // the return value to check there were no returned errors. Instead, we use our assert macro + // since we want to just fail the test, not panic the kernel. + // + // We save the result in a variable so that the failed assertion message looks nicer. + let after = if let Some(JsonValue::Bool(true)) = wrapper.get("returns_result") { + "\n} let test_return_value = _inner(); assert!(test_return_value.is_ok()); }" + } else { + after.as_str() + }; + + let body = format!("{crate_level_code}\n{before}\n{code}{after}\n"); + nb_generated += 1; + + // Generate an ID sequence ("test number") for each one in the file. + if file == last_file { + number += 1; + } else { + number = 0; + last_file = file; + } + + // Generate a KUnit name (i.e. test name and C symbol) for this test. + // + // We avoid the line number, like `rustdoc` does, to make things slightly more stable for + // bisection purposes. However, to aid developers in mapping back what test failed, we will + // print a diagnostics line in the KTAP report. + let kunit_name = format!( + "rust_doctest_{}_{number}", + file.replace('/', "_").replace('.', "_") + ); + + // Calculate how many lines before `main` function (including the `main` function line). + let body_offset = body + .lines() + .take_while(|line| !line.contains("fn main() {")) + .count() + + 1; + + use std::fmt::Write; + write!( + rust_tests, + r#"/// Generated `{name}` KUnit test case from a Rust documentation test. +#[no_mangle] +pub extern "C" fn {kunit_name}(__kunit_test: *mut ::kernel::bindings::kunit) {{ + /// Overrides the usual [`assert!`] macro with one that calls KUnit instead. + #[allow(unused)] + macro_rules! assert {{ + ($cond:expr $(,)?) => {{{{ + ::kernel::kunit_assert!( + "{kunit_name}", "{file}", __DOCTEST_ANCHOR - {line}, $cond + ); + }}}} + }} + + /// Overrides the usual [`assert_eq!`] macro with one that calls KUnit instead. + #[allow(unused)] + macro_rules! assert_eq {{ + ($left:expr, $right:expr $(,)?) => {{{{ + ::kernel::kunit_assert_eq!( + "{kunit_name}", "{file}", __DOCTEST_ANCHOR - {line}, $left, $right + ); + }}}} + }} + + // Many tests need the prelude, so provide it by default. + #[allow(unused)] + use ::kernel::prelude::*; + + // Unconditionally print the location of the original doctest (i.e. rather than the location in + // the generated file) so that developers can easily map the test back to the source code. // - // We save the result in a variable so that the failed assertion message looks nicer. - let body = body.replace( - &format!("}} {rustdoc_function_name}().unwrap() }}"), - &format!("}} let test_return_value = {rustdoc_function_name}(); assert!(test_return_value.is_ok()); }}"), - ); + // This information is also printed when assertions fail, but this helps in the successful cases + // when the user is running KUnit manually, or when passing `--raw_output` to `kunit.py`. + // + // This follows the syntax for declaring test metadata in the proposed KTAP v2 spec, which may + // be used for the proposed KUnit test attributes API. Thus hopefully this will make migration + // easier later on. + ::kernel::kunit::info(fmt!(" # {kunit_name}.location: {file}:{line}\n")); + + /// The anchor where the test code body starts. + #[allow(unused)] + static __DOCTEST_ANCHOR: i32 = ::core::line!() as i32 + {body_offset} + 1; + {{ + {body} + main(); + }} +}} + +"# + ) + .unwrap(); + + write!(c_test_declarations, "void {kunit_name}(struct kunit *);\n").unwrap(); + write!(c_test_cases, " KUNIT_CASE({kunit_name}),\n").unwrap(); + } + + if nb_generated == 0 { + panic!("No test function found in `rustdoc`'s output."); + } + + let rust_tests = rust_tests.trim(); + let c_test_declarations = c_test_declarations.trim(); + let c_test_cases = c_test_cases.trim(); + + write!( + BufWriter::new(File::create("rust/doctests_kernel_generated.rs").unwrap()), + r#"//! `kernel` crate documentation tests. + +const __LOG_PREFIX: &[u8] = b"rust_doctests_kernel\0"; + +{rust_tests} +"# + ) + .unwrap(); + + write!( + BufWriter::new(File::create("rust/doctests_kernel_generated_kunit.c").unwrap()), + r#"/* + * `kernel` crate documentation tests. + */ + +#include <kunit/test.h> + +{c_test_declarations} + +static struct kunit_case test_cases[] = {{ + {c_test_cases} + {{ }} +}}; - // Figure out a smaller test name based on the generated function name. - let name = rustdoc_function_name.split_once("_rust_kernel_").unwrap().1; +static struct kunit_suite test_suite = {{ + .name = "rust_doctests_kernel", + .test_cases = test_cases, +}}; - let path = format!("rust/test/doctests/kernel/{name}"); +kunit_test_suite(test_suite); - std::fs::write(path, body.as_bytes()).unwrap(); +MODULE_LICENSE("GPL"); +"# + ) + .unwrap(); } diff --git a/scripts/rustdoc_test_gen.rs b/scripts/rustdoc_test_gen.rs deleted file mode 100644 index c8f9dc2ab976..000000000000 --- a/scripts/rustdoc_test_gen.rs +++ /dev/null @@ -1,265 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -//! Generates KUnit tests from saved `rustdoc`-generated tests. -//! -//! KUnit passes a context (`struct kunit *`) to each test, which should be forwarded to the other -//! KUnit functions and macros. -//! -//! However, we want to keep this as an implementation detail because: -//! -//! - Test code should not care about the implementation. -//! -//! - Documentation looks worse if it needs to carry extra details unrelated to the piece -//! being described. -//! -//! - Test code should be able to define functions and call them, without having to carry -//! the context. -//! -//! - Later on, we may want to be able to test non-kernel code (e.g. `core` or third-party -//! crates) which likely use the standard library `assert*!` macros. -//! -//! For this reason, instead of the passed context, `kunit_get_current_test()` is used instead -//! (i.e. `current->kunit_test`). -//! -//! Note that this means other threads/tasks potentially spawned by a given test, if failing, will -//! report the failure in the kernel log but will not fail the actual test. Saving the pointer in -//! e.g. a `static` per test does not fully solve the issue either, because currently KUnit does -//! not support assertions (only expectations) from other tasks. Thus leave that feature for -//! the future, which simplifies the code here too. We could also simply not allow `assert`s in -//! other tasks, but that seems overly constraining, and we do want to support them, eventually. - -use std::{ - fs, - fs::File, - io::{BufWriter, Read, Write}, - path::{Path, PathBuf}, -}; - -/// Find the real path to the original file based on the `file` portion of the test name. -/// -/// `rustdoc` generated `file`s look like `sync_locked_by_rs`. Underscores (except the last one) -/// may represent an actual underscore in a directory/file, or a path separator. Thus the actual -/// file might be `sync_locked_by.rs`, `sync/locked_by.rs`, `sync_locked/by.rs` or -/// `sync/locked/by.rs`. This function walks the file system to determine which is the real one. -/// -/// This does require that ambiguities do not exist, but that seems fair, especially since this is -/// all supposed to be temporary until `rustdoc` gives us proper metadata to build this. If such -/// ambiguities are detected, they are diagnosed and the script panics. -fn find_real_path<'a>(srctree: &Path, valid_paths: &'a mut Vec<PathBuf>, file: &str) -> &'a str { - valid_paths.clear(); - - let potential_components: Vec<&str> = file.strip_suffix("_rs").unwrap().split('_').collect(); - - find_candidates(srctree, valid_paths, Path::new(""), &potential_components); - fn find_candidates( - srctree: &Path, - valid_paths: &mut Vec<PathBuf>, - prefix: &Path, - potential_components: &[&str], - ) { - // The base case: check whether all the potential components left, joined by underscores, - // is a file. - let joined_potential_components = potential_components.join("_") + ".rs"; - if srctree - .join("rust/kernel") - .join(prefix) - .join(&joined_potential_components) - .is_file() - { - // Avoid `srctree` here in order to keep paths relative to it in the KTAP output. - valid_paths.push( - Path::new("rust/kernel") - .join(prefix) - .join(joined_potential_components), - ); - } - - // In addition, check whether each component prefix, joined by underscores, is a directory. - // If not, there is no need to check for combinations with that prefix. - for i in 1..potential_components.len() { - let (components_prefix, components_rest) = potential_components.split_at(i); - let prefix = prefix.join(components_prefix.join("_")); - if srctree.join("rust/kernel").join(&prefix).is_dir() { - find_candidates(srctree, valid_paths, &prefix, components_rest); - } - } - } - - match valid_paths.as_slice() { - [] => panic!( - "No path candidates found for `{file}`. This is likely a bug in the build system, or \ - some files went away while compiling." - ), - [valid_path] => valid_path.to_str().unwrap(), - valid_paths => { - use std::fmt::Write; - - let mut candidates = String::new(); - for path in valid_paths { - writeln!(&mut candidates, " {path:?}").unwrap(); - } - panic!( - "Several path candidates found for `{file}`, please resolve the ambiguity by \ - renaming a file or folder. Candidates:\n{candidates}", - ); - } - } -} - -fn main() { - let srctree = std::env::var("srctree").unwrap(); - let srctree = Path::new(&srctree); - - let mut paths = fs::read_dir("rust/test/doctests/kernel") - .unwrap() - .map(|entry| entry.unwrap().path()) - .collect::<Vec<_>>(); - - // Sort paths. - paths.sort(); - - let mut rust_tests = String::new(); - let mut c_test_declarations = String::new(); - let mut c_test_cases = String::new(); - let mut body = String::new(); - let mut last_file = String::new(); - let mut number = 0; - let mut valid_paths: Vec<PathBuf> = Vec::new(); - let mut real_path: &str = ""; - for path in paths { - // The `name` follows the `{file}_{line}_{number}` pattern (see description in - // `scripts/rustdoc_test_builder.rs`). Discard the `number`. - let name = path.file_name().unwrap().to_str().unwrap().to_string(); - - // Extract the `file` and the `line`, discarding the `number`. - let (file, line) = name.rsplit_once('_').unwrap().0.rsplit_once('_').unwrap(); - - // Generate an ID sequence ("test number") for each one in the file. - if file == last_file { - number += 1; - } else { - number = 0; - last_file = file.to_string(); - - // Figure out the real path, only once per file. - real_path = find_real_path(srctree, &mut valid_paths, file); - } - - // Generate a KUnit name (i.e. test name and C symbol) for this test. - // - // We avoid the line number, like `rustdoc` does, to make things slightly more stable for - // bisection purposes. However, to aid developers in mapping back what test failed, we will - // print a diagnostics line in the KTAP report. - let kunit_name = format!("rust_doctest_kernel_{file}_{number}"); - - // Read the test's text contents to dump it below. - body.clear(); - File::open(path).unwrap().read_to_string(&mut body).unwrap(); - - // Calculate how many lines before `main` function (including the `main` function line). - let body_offset = body - .lines() - .take_while(|line| !line.contains("fn main() {")) - .count() - + 1; - - use std::fmt::Write; - write!( - rust_tests, - r#"/// Generated `{name}` KUnit test case from a Rust documentation test. -#[no_mangle] -pub extern "C" fn {kunit_name}(__kunit_test: *mut ::kernel::bindings::kunit) {{ - /// Overrides the usual [`assert!`] macro with one that calls KUnit instead. - #[allow(unused)] - macro_rules! assert {{ - ($cond:expr $(,)?) => {{{{ - ::kernel::kunit_assert!( - "{kunit_name}", "{real_path}", __DOCTEST_ANCHOR - {line}, $cond - ); - }}}} - }} - - /// Overrides the usual [`assert_eq!`] macro with one that calls KUnit instead. - #[allow(unused)] - macro_rules! assert_eq {{ - ($left:expr, $right:expr $(,)?) => {{{{ - ::kernel::kunit_assert_eq!( - "{kunit_name}", "{real_path}", __DOCTEST_ANCHOR - {line}, $left, $right - ); - }}}} - }} - - // Many tests need the prelude, so provide it by default. - #[allow(unused)] - use ::kernel::prelude::*; - - // Unconditionally print the location of the original doctest (i.e. rather than the location in - // the generated file) so that developers can easily map the test back to the source code. - // - // This information is also printed when assertions fail, but this helps in the successful cases - // when the user is running KUnit manually, or when passing `--raw_output` to `kunit.py`. - // - // This follows the syntax for declaring test metadata in the proposed KTAP v2 spec, which may - // be used for the proposed KUnit test attributes API. Thus hopefully this will make migration - // easier later on. - ::kernel::kunit::info(fmt!(" # {kunit_name}.location: {real_path}:{line}\n")); - - /// The anchor where the test code body starts. - #[allow(unused)] - static __DOCTEST_ANCHOR: i32 = ::core::line!() as i32 + {body_offset} + 1; - {{ - {body} - main(); - }} -}} - -"# - ) - .unwrap(); - - write!(c_test_declarations, "void {kunit_name}(struct kunit *);\n").unwrap(); - write!(c_test_cases, " KUNIT_CASE({kunit_name}),\n").unwrap(); - } - - let rust_tests = rust_tests.trim(); - let c_test_declarations = c_test_declarations.trim(); - let c_test_cases = c_test_cases.trim(); - - write!( - BufWriter::new(File::create("rust/doctests_kernel_generated.rs").unwrap()), - r#"//! `kernel` crate documentation tests. - -const __LOG_PREFIX: &[u8] = b"rust_doctests_kernel\0"; - -{rust_tests} -"# - ) - .unwrap(); - - write!( - BufWriter::new(File::create("rust/doctests_kernel_generated_kunit.c").unwrap()), - r#"/* - * `kernel` crate documentation tests. - */ - -#include <kunit/test.h> - -{c_test_declarations} - -static struct kunit_case test_cases[] = {{ - {c_test_cases} - {{ }} -}}; - -static struct kunit_suite test_suite = {{ - .name = "rust_doctests_kernel", - .test_cases = test_cases, -}}; - -kunit_test_suite(test_suite); - -MODULE_LICENSE("GPL"); -"# - ) - .unwrap(); -} base-commit: 0d97f2067c166eb495771fede9f7b73999c67f66 -- 2.51.0

1 day, 4 hours

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[PATCH bpf-next v3 0/3] bpf: Add overwrite mode for BPF ring buffer

by Xu Kuohai

When the BPF ring buffer is full, a new event cannot be recorded until one or more old events are consumed to make enough space for it. In cases such as fault diagnostics, where recent events are more useful than older ones, this mechanism may lead to critical events being lost. So add overwrite mode for BPF ring buffer to address it. In this mode, the new event overwrites the oldest event when the buffer is full. v3: - remove half-round wakeup, drop unnecessary min in ringbuf_avail_data_sz(), switch to smp_load_acquire, update tests and fix typos, etc (Andrii) - rebase and re-collect performance data v2: https://lore.kernel.org/bpf/20250905150641.2078838-1-xukuohai@huaweicloud.c… - remove libbpf changes (Andrii) - update overwrite benchmark v1: https://lore.kernel.org/bpf/20250804022101.2171981-1-xukuohai@huaweicloud.c… Xu Kuohai (3): bpf: Add overwrite mode for BPF ring buffer selftests/bpf: Add overwrite mode test for BPF ring buffer selftests/bpf/benchs: Add overwrite mode benchmark for BPF ring buffer include/uapi/linux/bpf.h | 4 + kernel/bpf/ringbuf.c | 109 +++++++++++++++--- tools/include/uapi/linux/bpf.h | 4 + tools/testing/selftests/bpf/Makefile | 3 +- .../selftests/bpf/benchs/bench_ringbufs.c | 66 ++++++++++- .../bpf/benchs/run_bench_ringbufs.sh | 4 + .../selftests/bpf/prog_tests/ringbuf.c | 64 ++++++++++ .../selftests/bpf/progs/ringbuf_bench.c | 11 ++ .../bpf/progs/test_ringbuf_overwrite.c | 98 ++++++++++++++++ 9 files changed, 337 insertions(+), 26 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/test_ringbuf_overwrite.c -- 2.43.0

1 day, 7 hours

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[PATCH net-next] selftests/net: io_uring: fix unknown errnum values

by Carlos Llamas

The io_uring functions return negative error values, but error() expects these to be positive to properly match them to an errno string. Fix this to make sure the correct error descriptions are displayed upon failure. Signed-off-by: Carlos Llamas <cmllamas(a)google.com> --- .../selftests/net/io_uring_zerocopy_tx.c | 24 +++++++++---------- 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/tools/testing/selftests/net/io_uring_zerocopy_tx.c b/tools/testing/selftests/net/io_uring_zerocopy_tx.c index 76e604e4810e..7bfeeb133705 100644 --- a/tools/testing/selftests/net/io_uring_zerocopy_tx.c +++ b/tools/testing/selftests/net/io_uring_zerocopy_tx.c @@ -106,14 +106,14 @@ static void do_tx(int domain, int type, int protocol) ret = io_uring_queue_init(512, &ring, 0); if (ret) - error(1, ret, "io_uring: queue init"); + error(1, -ret, "io_uring: queue init"); iov.iov_base = payload; iov.iov_len = cfg_payload_len; ret = io_uring_register_buffers(&ring, &iov, 1); if (ret) - error(1, ret, "io_uring: buffer registration"); + error(1, -ret, "io_uring: buffer registration"); tstop = gettimeofday_ms() + cfg_runtime_ms; do { @@ -149,24 +149,24 @@ static void do_tx(int domain, int type, int protocol) ret = io_uring_submit(&ring); if (ret != cfg_nr_reqs) - error(1, ret, "submit"); + error(1, -ret, "submit"); if (cfg_cork) do_setsockopt(fd, IPPROTO_UDP, UDP_CORK, 0); for (i = 0; i < cfg_nr_reqs; i++) { ret = io_uring_wait_cqe(&ring, &cqe); if (ret) - error(1, ret, "wait cqe"); + error(1, -ret, "wait cqe"); if (cqe->user_data != NONZC_TAG && cqe->user_data != ZC_TAG) - error(1, -EINVAL, "invalid cqe->user_data"); + error(1, EINVAL, "invalid cqe->user_data"); if (cqe->flags & IORING_CQE_F_NOTIF) { if (cqe->flags & IORING_CQE_F_MORE) - error(1, -EINVAL, "invalid notif flags"); + error(1, EINVAL, "invalid notif flags"); if (compl_cqes <= 0) - error(1, -EINVAL, "notification mismatch"); + error(1, EINVAL, "notification mismatch"); compl_cqes--; i--; io_uring_cqe_seen(&ring); @@ -174,14 +174,14 @@ static void do_tx(int domain, int type, int protocol) } if (cqe->flags & IORING_CQE_F_MORE) { if (cqe->user_data != ZC_TAG) - error(1, cqe->res, "unexpected F_MORE"); + error(1, -cqe->res, "unexpected F_MORE"); compl_cqes++; } if (cqe->res >= 0) { packets++; bytes += cqe->res; } else if (cqe->res != -EAGAIN) { - error(1, cqe->res, "send failed"); + error(1, -cqe->res, "send failed"); } io_uring_cqe_seen(&ring); } @@ -190,11 +190,11 @@ static void do_tx(int domain, int type, int protocol) while (compl_cqes) { ret = io_uring_wait_cqe(&ring, &cqe); if (ret) - error(1, ret, "wait cqe"); + error(1, -ret, "wait cqe"); if (cqe->flags & IORING_CQE_F_MORE) - error(1, -EINVAL, "invalid notif flags"); + error(1, EINVAL, "invalid notif flags"); if (!(cqe->flags & IORING_CQE_F_NOTIF)) - error(1, -EINVAL, "missing notif flag"); + error(1, EINVAL, "missing notif flag"); io_uring_cqe_seen(&ring); compl_cqes--; -- 2.51.0.869.ge66316f041-goog

1 day, 11 hours

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[RFC PATCH v1 00/37] guest_memfd: In-place conversion support

by Ackerley Tng

Hello, IIUC this is the first independent patch series for guest_memfd's in-place conversion series! Happy to finally bring this out on its own. Previous versions of this feature, part of other series, are available at [1][2][3]. Many prior discussions have led up to these main features of this series, and these are the main points I'd like feedback on. 1. Having private/shared status stored in a maple tree (Thanks Michael for your support of using maple trees over xarrays for performance! [4]). 2. Having a new guest_memfd ioctl (not a vm ioctl) that performs conversions. 3. Using ioctls/structs/input attribute similar to the existing vm ioctl KVM_SET_MEMORY_ATTRIBUTES to perform conversions. 4. Storing requested attributes directly in the maple tree. 5. Using a KVM module-wide param to toggle between setting memory attributes via vm and guest_memfd ioctls (making them mututally exclusive - a single loaded KVM module can only do one of the two.) 6. Skipping LRU in guest_memfd folios - make guest_memfd folios not participate in LRU to avoid LRU refcounts from interfering with conversions. This series is based on kvm/next, followed by + v12 of NUMA mempolicy support patches [5] + 3 cleanup patches from Sean [6][7][8] Everything is stitched together here for your convenience https://github.com/googleprodkernel/linux-cc/commits/guest_memfd-inplace-co… Thank you all for helping with this series! If I missed out your comment from a previous series, it's not intentional! Please do raise it again. TODOs: + There might be an issue with memory failure handling because when guest_memfd folios stop participating in LRU. From a preliminary analysis, HWPoisonHandlable() is only true if PageLRU() is true. This needs further investigation. [1] https://lore.kernel.org/all/bd163de3118b626d1005aa88e71ef2fb72f0be0f.172600… [2] https://lore.kernel.org/all/20250117163001.2326672-6-tabba@google.com/ [3] https://lore.kernel.org/all/b784326e9ccae6a08388f1bf39db70a2204bdc51.174726… [4] https://lore.kernel.org/all/20250529054227.hh2f4jmyqf6igd3i@amd.com/ [5] https://lore.kernel.org/all/20251007221420.344669-1-seanjc@google.com/T/ [6] https://lore.kernel.org/all/20250924174255.2141847-1-seanjc@google.com/ [7] https://lore.kernel.org/all/20251007224515.374516-1-seanjc@google.com/ [8] https://lore.kernel.org/all/20251007223625.369939-1-seanjc@google.com/ Ackerley Tng (19): KVM: guest_memfd: Update kvm_gmem_populate() to use gmem attributes KVM: Introduce KVM_SET_MEMORY_ATTRIBUTES2 KVM: guest_memfd: Don't set FGP_ACCESSED when getting folios KVM: guest_memfd: Skip LRU for guest_memfd folios KVM: guest_memfd: Add support for KVM_SET_MEMORY_ATTRIBUTES KVM: selftests: Update framework to use KVM_SET_MEMORY_ATTRIBUTES2 KVM: selftests: guest_memfd: Test basic single-page conversion flow KVM: selftests: guest_memfd: Test conversion flow when INIT_SHARED KVM: selftests: guest_memfd: Test indexing in guest_memfd KVM: selftests: guest_memfd: Test conversion before allocation KVM: selftests: guest_memfd: Convert with allocated folios in different layouts KVM: selftests: guest_memfd: Test precision of conversion KVM: selftests: guest_memfd: Test that truncation does not change shared/private status KVM: selftests: guest_memfd: Test conversion with elevated page refcount KVM: selftests: Reset shared memory after hole-punching KVM: selftests: Provide function to look up guest_memfd details from gpa KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe KVM: selftests: Update private_mem_conversions_test to mmap() guest_memfd KVM: selftests: Add script to exercise private_mem_conversions_test Sean Christopherson (18): KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES KVM: Enumerate support for PRIVATE memory iff kvm_arch_has_private_mem is defined KVM: Stub in ability to disable per-VM memory attribute tracking KVM: guest_memfd: Wire up kvm_get_memory_attributes() to per-gmem attributes KVM: guest_memfd: Enable INIT_SHARED on guest_memfd for x86 Coco VMs KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86 KVM: Let userspace disable per-VM mem attributes, enable per-gmem attributes KVM: selftests: Create gmem fd before "regular" fd when adding memslot KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset} KVM: selftests: Add support for mmap() on guest_memfd in core library KVM: selftests: Add helpers for calling ioctls on guest_memfd KVM: selftests: guest_memfd: Test that shared/private status is consistent across processes KVM: selftests: Add selftests global for guest memory attributes capability KVM: selftests: Provide common function to set memory attributes KVM: selftests: Check fd/flags provided to mmap() when setting up memslot KVM: selftests: Update pre-fault test to work with per-guest_memfd attributes KVM: selftests: Update private memory exits test work with per-gmem attributes Documentation/virt/kvm/api.rst | 72 ++- arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/Kconfig | 15 +- arch/x86/kvm/mmu/mmu.c | 4 +- arch/x86/kvm/x86.c | 13 +- include/linux/kvm_host.h | 44 +- include/trace/events/kvm.h | 4 +- include/uapi/linux/kvm.h | 17 + mm/filemap.c | 1 + mm/memcontrol.c | 2 + tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile.kvm | 1 + .../kvm/guest_memfd_conversions_test.c | 498 ++++++++++++++++++ .../testing/selftests/kvm/include/kvm_util.h | 127 ++++- .../testing/selftests/kvm/include/test_util.h | 29 +- tools/testing/selftests/kvm/lib/kvm_util.c | 128 +++-- tools/testing/selftests/kvm/lib/test_util.c | 7 - .../selftests/kvm/pre_fault_memory_test.c | 2 +- .../kvm/x86/private_mem_conversions_test.c | 55 +- .../kvm/x86/private_mem_conversions_test.py | 159 ++++++ .../kvm/x86/private_mem_kvm_exits_test.c | 36 +- virt/kvm/Kconfig | 4 +- virt/kvm/guest_memfd.c | 414 +++++++++++++-- virt/kvm/kvm_main.c | 104 +++- 24 files changed, 1554 insertions(+), 185 deletions(-) create mode 100644 tools/testing/selftests/kvm/guest_memfd_conversions_test.c create mode 100755 tools/testing/selftests/kvm/x86/private_mem_conversions_test.py -- 2.51.0.858.gf9c4a03a3a-goog

1 day, 11 hours

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[PATCH v5 0/7] platform/chrome: Fix a possible UAF via revocable

by Tzung-Bi Shih

This is a follow-up series of [1]. It tries to fix a possible UAF in the fops of cros_ec_chardev after the underlying protocol device has gone by using revocable. The 1st patch introduces the revocable which is an implementation of ideas from the talk [2]. The 2nd and 3rd patches add test cases for revocable in Kunit and selftest. The 4th patch converts existing protocol devices to resource providers of cros_ec_device. The 5th - 7th are PoC patches for showing the use case of "Replace file operations" below. --- I came out with 2 possible usages of revocable. 1. Use primitive APIs Use the primitive APIs of revocable directly. The file operations make sure the resources are available when using them. This is what the series original proposed[3][4]. Even though it has the finest grain for accessing the resources, it makes the user code verbose. Per feedback from the community, I'm looking for some subsystem level helpers so that user code can be simlper. 2. Replace file operations Replace filp->f_op to revocable-aware warppers. The warppers make sure the resources are available in the file operations. The user code needs to provide a callback .try_access() to tell the wrappers where/how to *save* the pointers of resources. Known drawback: - The warppers reserve the resources for all file operations even if they might be unused. - The user code still needs to be revocable-aware. - The whole file operation becomes a SRCU read-side critical section. Are there any functions can't be called in the critical section? If there is, the file operations may not be awared of that. See 5th - 7th patches for an example usage. [1] https://lore.kernel.org/chrome-platform/20250721044456.2736300-6-tzungbi@ke… [2] https://lpc.events/event/17/contributions/1627/ [3] https://lore.kernel.org/chrome-platform/20250912081718.3827390-5-tzungbi@ke… [4] https://lore.kernel.org/chrome-platform/20250912081718.3827390-6-tzungbi@ke… v5: - Rebase onto next-20251015. - Add more context about the PoC. - Support multiple revocable providers in the PoC. v4: https://lore.kernel.org/chrome-platform/20250923075302.591026-1-tzungbi@ker… - Rebase onto next-20250922. - Remove the 5th patch from v3. - Add fops replacement PoC in 5th - 7th patches. v3: https://lore.kernel.org/chrome-platform/20250912081718.3827390-1-tzungbi@ke… - Rebase onto https://lore.kernel.org/chrome-platform/20250828083601.856083-1-tzungbi@ker… and next-20250912. - The 4th patch changed accordingly. v2: https://lore.kernel.org/chrome-platform/20250820081645.847919-1-tzungbi@ker… - Rename "ref_proxy" -> "revocable". - Add test cases in Kunit and selftest. v1: https://lore.kernel.org/chrome-platform/20250814091020.1302888-1-tzungbi@ke… Tzung-Bi Shih (7): revocable: Revocable resource management revocable: Add Kunit test cases selftests: revocable: Add kselftest cases platform/chrome: Protect cros_ec_device lifecycle with revocable revocable: Add fops replacement char: misc: Leverage revocable fops replacement platform/chrome: cros_ec_chardev: Secure cros_ec_device via revocable .../driver-api/driver-model/index.rst | 1 + .../driver-api/driver-model/revocable.rst | 87 +++++++ MAINTAINERS | 9 + drivers/base/Kconfig | 8 + drivers/base/Makefile | 5 +- drivers/base/revocable.c | 233 ++++++++++++++++++ drivers/base/revocable_test.c | 110 +++++++++ drivers/char/misc.c | 8 + drivers/platform/chrome/cros_ec.c | 5 + drivers/platform/chrome/cros_ec_chardev.c | 22 +- fs/Makefile | 2 +- fs/fs_revocable.c | 154 ++++++++++++ include/linux/fs.h | 2 + include/linux/fs_revocable.h | 21 ++ include/linux/miscdevice.h | 4 + include/linux/platform_data/cros_ec_proto.h | 4 + include/linux/revocable.h | 53 ++++ tools/testing/selftests/Makefile | 1 + .../selftests/drivers/base/revocable/Makefile | 7 + .../drivers/base/revocable/revocable_test.c | 116 +++++++++ .../drivers/base/revocable/test-revocable.sh | 39 +++ .../base/revocable/test_modules/Makefile | 10 + .../revocable/test_modules/revocable_test.c | 188 ++++++++++++++ 23 files changed, 1086 insertions(+), 3 deletions(-) create mode 100644 Documentation/driver-api/driver-model/revocable.rst create mode 100644 drivers/base/revocable.c create mode 100644 drivers/base/revocable_test.c create mode 100644 fs/fs_revocable.c create mode 100644 include/linux/fs_revocable.h create mode 100644 include/linux/revocable.h create mode 100644 tools/testing/selftests/drivers/base/revocable/Makefile create mode 100644 tools/testing/selftests/drivers/base/revocable/revocable_test.c create mode 100755 tools/testing/selftests/drivers/base/revocable/test-revocable.sh create mode 100644 tools/testing/selftests/drivers/base/revocable/test_modules/Makefile create mode 100644 tools/testing/selftests/drivers/base/revocable/test_modules/revocable_test.c -- 2.51.0.788.g6d19910ace-goog

1 day, 12 hours

4
20
0 0

[PATCH v2 0/2] Optimize the allocation of vector regset

by Yong-Xuan Wang

The vector regset uses the maximum possible vlenb 8192 to allocate a 2^18 bytes buffer to copy the vector register. But most platforms don’t support the largest vlenb. The regset has 2 users, ptrace syscall and coredump. When handling the PTRACE_GETREGSET requests from ptrace syscall, Linux will prepare a kernel buffer which size is min(user buffer size, limit). A malicious user process might overwhelm a memory-constrainted system when the buffer limit is very large. The coredump uses regset_get_alloc() to get the context of vector register. But this API allocates buffer before checking whether the target process uses vector extension, this wastes time to prepare a large memory buffer. The buffer limit can be determined after getting platform vlenb in the early boot stage, this can let the regset buffer match real hardware limits. Also add .active callbacks to let the coredump skip vector part when target process doesn't use it. After this patchset, userspace process needs 2 ptrace syscalls to retrieve the vector regset with PTRACE_GETREGSET. The first ptrace call only reads the header to get the vlenb information. Then prepare a suitable buffer to get the register context. The new vector ptrace kselftest demonstrates it. --- v2: - fix issues in vector ptrace kselftest (Andy) Yong-Xuan Wang (2): riscv: ptrace: Optimize the allocation of vector regset selftests: riscv: Add test for the Vector ptrace interface arch/riscv/include/asm/vector.h | 1 + arch/riscv/kernel/ptrace.c | 24 +++- arch/riscv/kernel/vector.c | 2 + tools/testing/selftests/riscv/vector/Makefile | 5 +- .../selftests/riscv/vector/vstate_ptrace.c | 134 ++++++++++++++++++ 5 files changed, 162 insertions(+), 4 deletions(-) create mode 100644 tools/testing/selftests/riscv/vector/vstate_ptrace.c -- 2.43.0

1 day, 13 hours

2
3
0 0

[PATCH v3 0/5] mm: VMA count limit fixes and improvements

by Kalesh Singh

Hi all, This series addresses an off-by-one bug in the VMA count limit check and introduces several improvements for clarity, test coverage, and observability around the VMA limit mechanism. The VMA count limit, controlled by sysctl_max_map_count, is a critical safeguard that prevents a single process from consuming excessive kernel memory by creating too many memory mappings. However, the checks in do_mmap() and do_brk_flags() used a strict inequality, allowing a process to exceed this limit by one VMA. This series begins by fixing this long-standing bug. The subsequent patches build on this by improving the surrounding code. A comprehensive selftest is added to validate VMA operations near the limit, preventing future regressions. The open-coded limit checks are replaced with a centralized helper, vma_count_remaining(), to improve readability. For better code clarity, mm_struct->map_count is renamed to the more apt vma_count. Finally, a trace event is added to provide observability for processes that fail allocations due to VMA exhaustion, which is valuable for debugging and profiling on production systems. The major changes in this version are: 1. Rebased on mm-new to resolve prior conflicts. 2. The patches to harden and add assertions for the VMA count have been dropped. David pointed out that these could be racy if sysctl_max_map_count is changed from userspace at just the wrong time. 3. The selftest has been completely rewritten per Lorenzo's feedback to make use of the kselftest harness and vm_util.h helpers. 4. The trace event has also been updated to contain more useful information and has been given a more fitting name, per feedback from Steve and Lorenzo. Tested on x86_64 and arm64: 1. Build test: allyesconfig for rename 2. Selftests: cd tools/testing/selftests/mm && \ make && \ ./run_vmtests.sh -t max_vma_count 3. vma tests: cd tools/testing/vma && \ make && \ ./vma Link to v2: https://lore.kernel.org/r/20250915163838.631445-1-kaleshsingh@google.com/ Thanks to everyone for their comments and feedback on the previous versions. --Kalesh Kalesh Singh (5): mm: fix off-by-one error in VMA count limit checks mm/selftests: add max_vma_count tests mm: introduce vma_count_remaining() mm: rename mm_struct::map_count to vma_count mm/tracing: introduce trace_mm_insufficient_vma_slots event MAINTAINERS | 2 + fs/binfmt_elf.c | 2 +- fs/coredump.c | 2 +- include/linux/mm.h | 2 - include/linux/mm_types.h | 2 +- include/trace/events/vma.h | 32 + kernel/fork.c | 2 +- mm/debug.c | 2 +- mm/internal.h | 3 + mm/mmap.c | 31 +- mm/mremap.c | 13 +- mm/nommu.c | 8 +- mm/util.c | 1 - mm/vma.c | 39 +- mm/vma_internal.h | 2 + tools/testing/selftests/mm/.gitignore | 1 + tools/testing/selftests/mm/Makefile | 1 + .../selftests/mm/max_vma_count_tests.c | 672 ++++++++++++++++++ tools/testing/selftests/mm/run_vmtests.sh | 5 + tools/testing/vma/vma.c | 32 +- tools/testing/vma/vma_internal.h | 16 +- 21 files changed, 818 insertions(+), 52 deletions(-) create mode 100644 include/trace/events/vma.h create mode 100644 tools/testing/selftests/mm/max_vma_count_tests.c base-commit: 4c4142c93fc19cd75a024e5c81b0532578a9e187 -- 2.51.0.760.g7b8bcc2412-goog

1 day, 13 hours

5
15
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[PATCH 0/8] resctrl: Add perf PMU for resctrl monitoring

by Jonathan Perry

Expose resctrl monitoring data via a lightweight perf PMU. Background: The kernel's initial cache-monitoring interface shipped via perf (commit 4afbb24ce5e7, 2015). That approach tied monitoring to tasks and cgroups. Later, cache control was designed around the resctrl filesystem to better match hardware semantics, and the incompatible perf CQM code was removed (commit c39a0e2c8850, 2017). This series implements a thin, generic perf PMU that _is_ compatible with resctrl. Motivation: perf support enables measuring cache occupancy and memory bandwidth metrics on hrtimer (high resolution timer) interrupts via eBPF. Compared with polling from userspace, hrtimer-based reads remove scheduling jitter and context switch overhead. Further, PMU reads can be parallel, since the PMU read path need not lock resctrl's rdtgroup_mutex. Parallelization and reduced jitter enable more accurate snapshots of cache occupancy and memory bandwidth. [1] has more details on the motivation and design. Design: The "resctrl" PMU is a small adapter on top of resctrl's monitoring path: - Event selection uses `attr.config` to pass an open `mon_data` fd (e.g. `mon_L3_00/llc_occupancy`). - Events must be CPU-bound within the file's domain. Perf is responsible the read executes on the bound CPU. - Event init resolves and pins the rdtgroup, prepares struct rmid_read via mon_event_setup_read(), and validates the bound CPU is in the file's domain CPU mask. - Sampling is not supported; reads match the `mon_data` file contents. - If the rdtgroup is deleted, reads return 0. Includes a new selftest (tools/testing/selftests/resctrl/pmu_test.c) to validate the PMU event init path, and adds PMU testing to existing CMT tests. Example usage (see Documentation/filesystems/resctrl.rst): Open a monitoring file and pass its fd in `perf_event_attr.config`, with `attr.type` set to the `resctrl` PMU type. The patches are based on top of v6.18-rc1 (commit 3a8660878839). [1] https://www.youtube.com/watch?v=4BGhAMJdZTc Jonathan Perry (8): resctrl: Pin rdtgroup for mon_data file lifetime resctrl/mon: Split RMID read init from execution resctrl/mon: Select cpumask before invoking mon_event_read() resctrl/mon: Create mon_event_setup_read() helper resctrl: Propagate CPU mask validation error via rr->err resctrl/pmu: Introduce skeleton PMU and selftests resctrl/pmu: Use mon_event_setup_read() and validate CPU resctrl/pmu: Implement .read via direct RMID read; add LLC selftest Documentation/filesystems/resctrl.rst | 64 ++++ fs/resctrl/Makefile | 2 +- fs/resctrl/ctrlmondata.c | 118 ++++--- fs/resctrl/internal.h | 24 +- fs/resctrl/monitor.c | 8 +- fs/resctrl/pmu.c | 217 +++++++++++++ fs/resctrl/rdtgroup.c | 131 +++++++- tools/testing/selftests/resctrl/cache.c | 94 +++++- tools/testing/selftests/resctrl/cmt_test.c | 17 +- tools/testing/selftests/resctrl/pmu_test.c | 292 ++++++++++++++++++ tools/testing/selftests/resctrl/pmu_utils.c | 32 ++ tools/testing/selftests/resctrl/resctrl.h | 4 + .../testing/selftests/resctrl/resctrl_tests.c | 1 + 13 files changed, 948 insertions(+), 56 deletions(-) create mode 100644 fs/resctrl/pmu.c create mode 100644 tools/testing/selftests/resctrl/pmu_test.c create mode 100644 tools/testing/selftests/resctrl/pmu_utils.c

1 day, 17 hours

2
11
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[RFC PATCH 0/3] mm: Fix MF_DELAYED handling on memory failure

by Lisa Wang

Hello, This patch series addresses an issue in the memory failure handling path where MF_DELAYED is incorrectly treated as an error. This issue was revealed because guest_memfd’s .error_remove_folio() callback returns MF_DELAYED. Currently, when the .error_remove_folio() callback for guest_memfd returns MF_DELAYED, there are a few issues. 1. truncate_error_folio() maps this to MF_FAILED. This causes memory_failure() to return -EBUSY, which unconditionally triggers a SIGBUS. The process’ configured memory corruption kill policy is ignored - even if PR_MCE_KILL_LATE is set, the process will still get a SIGBUS on deferred memory failures. 2. “Failed to punch page” is printed, even though MF_DELAYED indicates that it was intentionally not punched. The first patch corrects this by updating truncate_error_folio() to propagate MF_DELAYED to its caller. This allows memory_failure() to return 0, indicating success, and lets the delayed handling proceed as designed. This patch also updates me_pagecache_clean() to account for the folio's refcount, which remains elevated during delayed handling, aligning its logic with me_swapcache_dirty(). The subsequent two patches add KVM selftests to validate the fix and the expected behavior of guest_memfd memory failure: The first test patch verifies that memory_failure() now returns 0 in the delayed case and confirms that SIGBUS signaling logic remains correct for other scenarios (e.g., madvise injection or PR_MCE_KILL_EARLY). The second test patch confirms that after a memory failure, the poisoned page is correctly unmapped from the KVM guest's stage 2 page tables and that a subsequent access by the guest correctly notifies the userspace VMM with EHWPOISON. This patch series is built upon kvm/next. In addition, to align with the change of INIT_SHARED and to use the macro wrapper in guest_memfd selftests, we put these patches behind Sean’s patches [1]. For ease of testing, this series is also available, stitched together, at https://github.com/googleprodkernel/linux-cc/tree/memory-failure-mf-delayed… [1]: https://lore.kernel.org/all/20251003232606.4070510-1-seanjc@google.com/T/ Thank you, Lisa Wang (3): mm: memory_failure: Fix MF_DELAYED handling on truncation during failure KVM: selftests: Add memory failure tests in guest_memfd_test KVM: selftests: Test guest_memfd behavior with respect to stage 2 page tables mm/memory-failure.c | 24 +- .../testing/selftests/kvm/guest_memfd_test.c | 233 ++++++++++++++++++ 2 files changed, 248 insertions(+), 9 deletions(-) -- 2.51.0.788.g6d19910ace-goog

1 day, 17 hours

2
5
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[PATCH] KVM: selftests: fix ITS collection target addresses in vgic_lpi_stress

by Maximilian Dittgen

When mapping guest ITS collections, vgic_lpi_stress iterates over integers in the range [0, nr_cpus), passing them as the target_addr parameter to its_send_mapc_cmd(). These integers correspond to the selftest userspace vCPU IDs that we intend to map each ITS collection to. However, its_encode_target() within its_send_mapc_cmd() expects a vCPU's redistributor address--not the vCPU ID--as the target_addr parameter. This is evident from how its_encode_target() encodes the target_addr parameter as: its_mask_encode(&cmd->raw_cmd[2], target_addr >> 16, 51, 16) This shows that we right-shift the input target_addr parameter by 16 bits before encoding it. This makes sense when the parameter refers to redistributor addresses (e.g., 0x20000, 0x30000) but not vCPU IDs (e.g., 0x2, 0x3). The current impact of passing vCPU IDs to its_send_mapc_cmd() is that all vCPU IDs become 0x0 after the bit shift. Thus, when vgic_its_cmd_handle_mapc() receives the ITS command in vgic-its.c, it always interprets the collection's target_vcpu as 0. All interrupts sent to collections will be processed by vCPU 0, which defeats the purpose of this multi-vCPU test. Fix by left-shifting the vCPU parameter received by its_send_mapc_cmd 16 bits before passing it into its_encode_target for encoding. Signed-off-by: Maximilian Dittgen <mdittgen(a)amazon.com> --- To validate the patch, I added the following debug code at the top of vgic_its_cmd_handle_mapc: u64 raw_cmd2 = le64_to_cpu(its_cmd[2]); u32 target_addr = its_cmd_get_target_addr(its_cmd); kvm_info("MAPC: coll_id=%d, raw_cmd[2]=0x%llx, parsed_target=%u\n", coll_id, raw_cmd2, target_addr); vcpu = kvm_get_vcpu_by_id(kvm, its_cmd_get_target_addr(its_cmd)); kvm_info("MAPC: coll_id=%d, vcpu_id=%d\n", coll_id, vcpu ? vcpu->vcpu_id : -1); I then ran `./vgic_lpi_stress -v 3` to trigger the stress selftest with 3 vCPUs. Before the patch, the debug logs read: kvm [20832]: MAPC: coll_id=0, raw_cmd[2]=0x8000000000000000, parsed_target=0 kvm [20832]: MAPC: coll_id=0, vcpu_id=0 kvm [20832]: MAPC: coll_id=1, raw_cmd[2]=0x8000000000000001, parsed_target=0 kvm [20832]: MAPC: coll_id=1, vcpu_id=0 kvm [20832]: MAPC: coll_id=2, raw_cmd[2]=0x8000000000000002, parsed_target=0 kvm [20832]: MAPC: coll_id=2, vcpu_id=0 Note the last bit of the cmd string reflects the collection ID, but the rest of the cmd string reads 0. The handler parses out vCPU 0 for all 3 mapc calls. After the patch, the debug logs read: kvm [20019]: MAPC: coll_id=0, raw_cmd[2]=0x8000000000000000, parsed_target=0 kvm [20019]: MAPC: coll_id=0, vcpu_id=0 kvm [20019]: MAPC: coll_id=1, raw_cmd[2]=0x8000000000010001, parsed_target=1 kvm [20019]: MAPC: coll_id=1, vcpu_id=1 kvm [20019]: MAPC: coll_id=2, raw_cmd[2]=0x8000000000020002, parsed_target=2 kvm [20019]: MAPC: coll_id=2, vcpu_id=2 Note that the target vcpu and target collection are both visible in the cmd string. The handler parses out the correct vCPU for all 3 mapc calls. --- tools/testing/selftests/kvm/lib/arm64/gic_v3_its.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/lib/arm64/gic_v3_its.c b/tools/testing/selftests/kvm/lib/arm64/gic_v3_its.c index 09f270545646..23c46ad17221 100644 --- a/tools/testing/selftests/kvm/lib/arm64/gic_v3_its.c +++ b/tools/testing/selftests/kvm/lib/arm64/gic_v3_its.c @@ -15,6 +15,8 @@ #include "gic_v3.h" #include "processor.h" +#define GITS_COLLECTION_TARGET_SHIFT 16 + static u64 its_read_u64(unsigned long offset) { return readq_relaxed(GITS_BASE_GVA + offset); @@ -217,7 +219,7 @@ void its_send_mapc_cmd(void *cmdq_base, u32 vcpu_id, u32 collection_id, bool val its_encode_cmd(&cmd, GITS_CMD_MAPC); its_encode_collection(&cmd, collection_id); - its_encode_target(&cmd, vcpu_id); + its_encode_target(&cmd, vcpu_id << GITS_COLLECTION_TARGET_SHIFT); its_encode_valid(&cmd, valid); its_send_cmd(cmdq_base, &cmd); -- 2.50.1 (Apple Git-155) Amazon Web Services Development Center Germany GmbH Tamara-Danz-Str. 13 10243 Berlin Geschaeftsfuehrung: Christian Schlaeger Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B Sitz: Berlin Ust-ID: DE 365 538 597

1 day, 18 hours

2
1
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[PATCH 0/4] SBI MPXY support for KVM Guest

by Anup Patel

This series adds SBI MPXY support for KVM Guest/VM which will enable QEMU-KVM or KVMTOOL to emulate RPMI MPXY channels for the Guest/VM. These patches can also be found in riscv_kvm_sbi_mpxy_v1 branch at: https://github.com/avpatel/linux.git Anup Patel (4): RISC-V: KVM: Convert kvm_riscv_vcpu_sbi_forward() into extension handler RISC-V: KVM: Add separate source for forwarded SBI extensions RISC-V: KVM: Add SBI MPXY extension support for Guest KVM: riscv: selftests: Add SBI MPXY extension to get-reg-list arch/riscv/include/asm/kvm_vcpu_sbi.h | 5 ++- arch/riscv/include/uapi/asm/kvm.h | 1 + arch/riscv/kvm/Makefile | 1 + arch/riscv/kvm/vcpu_sbi.c | 10 +++++- arch/riscv/kvm/vcpu_sbi_base.c | 28 +-------------- arch/riscv/kvm/vcpu_sbi_forward.c | 34 +++++++++++++++++++ arch/riscv/kvm/vcpu_sbi_replace.c | 32 ----------------- arch/riscv/kvm/vcpu_sbi_system.c | 4 +-- arch/riscv/kvm/vcpu_sbi_v01.c | 3 +- .../selftests/kvm/riscv/get-reg-list.c | 4 +++ 10 files changed, 56 insertions(+), 66 deletions(-) create mode 100644 arch/riscv/kvm/vcpu_sbi_forward.c -- 2.43.0

1 day, 18 hours

2
8
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[PATCH v2 0/2] selftests/verification: Add initial RV tests

by Gabriele Monaco

Add a series of tests to validate the RV tracefs API and basic functionality. * available monitors: Check that all monitors (from the monitors folder) appear as available and have a description. Works with nested monitors. * enable/disable: Enable and disable all monitors and validate both the enabled file and the enabled_monitors. Check that enabling container monitors enables all nested monitors. * reactors: Set all reactors and validate the setting, also for nested monitors. * wwnr with printk: wwnr is broken on purpose, run it with a load and check that the printk reactor works. Also validate disabling reacting_on or monitoring_on prevents reactions. These tests use the ftracetest suite. The first patch of the series adapts ftracetest to make this possible. The enable/disable test cannot pass on upstream without the application of the fix in [1]. Changes since V1: - run stressors based on the cpu count on the wwnr/printk test [1] - https://lore.kernel.org/lkml/87tt0t4u19.fsf@yellow.woof To: Steven Rostedt <rostedt(a)goodmis.org> To: Nam Cao <namcao(a)linutronix.de> Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: John Kacur <jkacur(a)redhat.com> Cc: Waylon Cude <wcude(a)redhat.com> Cc: linux-trace-kernel(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Gabriele Monaco (2): selftest/ftrace: Generalise ftracetest to use with RV selftests/verification: Add initial RV tests MAINTAINERS | 1 + tools/testing/selftests/ftrace/ftracetest | 34 ++++++--- .../ftrace/test.d/00basic/mount_options.tc | 2 +- .../testing/selftests/ftrace/test.d/functions | 6 +- .../testing/selftests/verification/.gitignore | 2 + tools/testing/selftests/verification/Makefile | 8 ++ tools/testing/selftests/verification/config | 1 + tools/testing/selftests/verification/settings | 1 + .../selftests/verification/test.d/functions | 39 ++++++++++ .../test.d/rv_monitor_enable_disable.tc | 75 +++++++++++++++++++ .../verification/test.d/rv_monitor_reactor.tc | 68 +++++++++++++++++ .../test.d/rv_monitors_available.tc | 18 +++++ .../verification/test.d/rv_wwnr_printk.tc | 30 ++++++++ .../verification/verificationtest-ktap | 8 ++ 14 files changed, 279 insertions(+), 14 deletions(-) create mode 100644 tools/testing/selftests/verification/.gitignore create mode 100644 tools/testing/selftests/verification/Makefile create mode 100644 tools/testing/selftests/verification/config create mode 100644 tools/testing/selftests/verification/settings create mode 100644 tools/testing/selftests/verification/test.d/functions create mode 100644 tools/testing/selftests/verification/test.d/rv_monitor_enable_disable.tc create mode 100644 tools/testing/selftests/verification/test.d/rv_monitor_reactor.tc create mode 100644 tools/testing/selftests/verification/test.d/rv_monitors_available.tc create mode 100644 tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc create mode 100644 tools/testing/selftests/verification/verificationtest-ktap base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 -- 2.51.0

1 day, 23 hours

1
2
0 0

[PATCH v2] kunit: test_dev_action: Correctly cast 'priv' pointer to long*

by Florian Schmaus

The previous implementation incorrectly assumed the original type of 'priv' was void**, leading to an unnecessary and misleading cast. Correct the cast of the 'priv' pointer in test_dev_action() to its actual type, long*, removing an unnecessary cast. As an additional benefit, this fixes an out-of-bounds CHERI fault on hardware with architectural capabilities. The original implementation tried to store a capability-sized pointer using the priv pointer. However, the priv pointer's capability only granted access to the memory region of its original long type, leading to a bounds violation since the size of a long is smaller than the size of a capability. This change ensures that the pointer usage respects the capabilities' bounds. Fixes: d03c720e03bd ("kunit: Add APIs for managing devices") Reviewed-by: David Gow <davidgow(a)google.com> Signed-off-by: Florian Schmaus <florian.schmaus(a)codasip.com> --- Changes since v1: - Fix simple formatting issue: long* -> long * - Add 'Fixes' git trailer lib/kunit/kunit-test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/kunit/kunit-test.c b/lib/kunit/kunit-test.c index 8c01eabd4eaf..63130a48e237 100644 --- a/lib/kunit/kunit-test.c +++ b/lib/kunit/kunit-test.c @@ -739,7 +739,7 @@ static struct kunit_case kunit_current_test_cases[] = { static void test_dev_action(void *priv) { - *(void **)priv = (void *)1; + *(long *)priv = 1; } static void kunit_device_test(struct kunit *test) -- 2.51.0

2 days, 1 hour

1
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[PATCH 0/2] selftests: Centralize kselftest headers to avoid relative includes

by Bala-Vignesh-Reddy

This series centralize the handling of kselftest.h and kselftest_harness.h includes in selftests, replacing relative paths with a non-relative approach using shared -I path. Patch-1 updates the build files (Makefile and lib.mk) and include CFLAGS in sync/Makefile to resolve not found error Patch-2 applies bulk source change (Patch 2 is large but it is replaced automatically) Checked the changes with gcc-13.32 and clang 18.1 Suggested-by: Andrew Morton <akpm(a)linux-foundation.org> Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-… Bala-Vignesh-Reddy (2): selftests: Centralize include path for kselftest.h and kselftest_harness.h selftests: Replace relative includes with non-relative for kselftest.h and kselftest_harness.h Signed-off-by: Bala-Vignesh-Reddy <reddybalavignesh9979(a)gmail.com> tools/testing/selftests/Makefile | 4 ++++ tools/testing/selftests/acct/acct_syscall.c | 2 +- tools/testing/selftests/alsa/conf.c | 2 +- tools/testing/selftests/alsa/mixer-test.c | 2 +- tools/testing/selftests/alsa/pcm-test.c | 2 +- tools/testing/selftests/alsa/test-pcmtest-driver.c | 2 +- tools/testing/selftests/alsa/utimer-test.c | 2 +- tools/testing/selftests/arm64/abi/hwcap.c | 2 +- tools/testing/selftests/arm64/abi/ptrace.c | 2 +- tools/testing/selftests/arm64/abi/syscall-abi.c | 2 +- tools/testing/selftests/arm64/fp/fp-ptrace.c | 2 +- tools/testing/selftests/arm64/fp/fp-stress.c | 2 +- tools/testing/selftests/arm64/fp/sve-probe-vls.c | 2 +- tools/testing/selftests/arm64/fp/sve-ptrace.c | 2 +- tools/testing/selftests/arm64/fp/vec-syscfg.c | 2 +- tools/testing/selftests/arm64/fp/za-ptrace.c | 2 +- tools/testing/selftests/arm64/fp/zt-ptrace.c | 2 +- tools/testing/selftests/arm64/gcs/gcs-stress.c | 2 +- tools/testing/selftests/arm64/pauth/pac.c | 2 +- tools/testing/selftests/arm64/tags/tags_test.c | 2 +- tools/testing/selftests/bpf/xskxceiver.c | 2 +- tools/testing/selftests/breakpoints/breakpoint_test.c | 2 +- tools/testing/selftests/breakpoints/breakpoint_test_arm64.c | 2 +- tools/testing/selftests/breakpoints/step_after_suspend_test.c | 2 +- tools/testing/selftests/cachestat/test_cachestat.c | 2 +- tools/testing/selftests/capabilities/test_execve.c | 2 +- tools/testing/selftests/capabilities/validate_cap.c | 2 +- tools/testing/selftests/cgroup/test_core.c | 2 +- tools/testing/selftests/cgroup/test_cpu.c | 2 +- tools/testing/selftests/cgroup/test_cpuset.c | 2 +- tools/testing/selftests/cgroup/test_freezer.c | 2 +- tools/testing/selftests/cgroup/test_hugetlb_memcg.c | 2 +- tools/testing/selftests/cgroup/test_kill.c | 2 +- tools/testing/selftests/cgroup/test_kmem.c | 2 +- tools/testing/selftests/cgroup/test_memcontrol.c | 2 +- tools/testing/selftests/cgroup/test_pids.c | 2 +- tools/testing/selftests/cgroup/test_zswap.c | 2 +- tools/testing/selftests/clone3/clone3.c | 2 +- .../testing/selftests/clone3/clone3_cap_checkpoint_restore.c | 2 +- tools/testing/selftests/clone3/clone3_clear_sighand.c | 2 +- tools/testing/selftests/clone3/clone3_selftests.h | 2 +- tools/testing/selftests/clone3/clone3_set_tid.c | 2 +- tools/testing/selftests/connector/proc_filter.c | 2 +- tools/testing/selftests/core/close_range_test.c | 2 +- tools/testing/selftests/core/unshare_test.c | 2 +- tools/testing/selftests/coredump/stackdump_test.c | 2 +- tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 2 +- tools/testing/selftests/drivers/dma-buf/udmabuf.c | 2 +- tools/testing/selftests/drivers/ntsync/ntsync.c | 2 +- .../testing/selftests/drivers/s390x/uvdevice/test_uvdevice.c | 2 +- tools/testing/selftests/exec/check-exec.c | 2 +- tools/testing/selftests/exec/execveat.c | 2 +- tools/testing/selftests/exec/load_address.c | 2 +- tools/testing/selftests/exec/non-regular.c | 2 +- tools/testing/selftests/exec/null-argv.c | 2 +- tools/testing/selftests/exec/recursion-depth.c | 2 +- tools/testing/selftests/fchmodat2/fchmodat2_test.c | 2 +- tools/testing/selftests/filelock/ofdlocks.c | 2 +- tools/testing/selftests/filesystems/anon_inode_test.c | 2 +- tools/testing/selftests/filesystems/binderfs/binderfs_test.c | 2 +- tools/testing/selftests/filesystems/devpts_pts.c | 2 +- tools/testing/selftests/filesystems/epoll/epoll_wakeup_test.c | 2 +- tools/testing/selftests/filesystems/eventfd/eventfd_test.c | 2 +- tools/testing/selftests/filesystems/file_stressor.c | 2 +- tools/testing/selftests/filesystems/kernfs_test.c | 2 +- .../selftests/filesystems/mount-notify/mount-notify_test.c | 2 +- .../selftests/filesystems/mount-notify/mount-notify_test_ns.c | 2 +- tools/testing/selftests/filesystems/nsfs/iterate_mntns.c | 2 +- tools/testing/selftests/filesystems/overlayfs/dev_in_maps.c | 2 +- .../selftests/filesystems/overlayfs/set_layers_via_fds.c | 2 +- .../testing/selftests/filesystems/statmount/listmount_test.c | 2 +- .../testing/selftests/filesystems/statmount/statmount_test.c | 2 +- .../selftests/filesystems/statmount/statmount_test_ns.c | 2 +- tools/testing/selftests/filesystems/utils.c | 2 +- tools/testing/selftests/hid/hid_common.h | 2 +- tools/testing/selftests/intel_pstate/aperf.c | 2 +- tools/testing/selftests/iommu/iommufd_utils.h | 2 +- tools/testing/selftests/ipc/msgque.c | 2 +- tools/testing/selftests/ir/ir_loopback.c | 2 +- tools/testing/selftests/kcmp/kcmp_test.c | 2 +- tools/testing/selftests/kselftest_harness.h | 2 +- tools/testing/selftests/kselftest_harness/harness-selftest.c | 2 +- tools/testing/selftests/landlock/audit.h | 2 +- tools/testing/selftests/landlock/common.h | 2 +- tools/testing/selftests/lib.mk | 2 ++ tools/testing/selftests/lsm/lsm_get_self_attr_test.c | 2 +- tools/testing/selftests/lsm/lsm_list_modules_test.c | 2 +- tools/testing/selftests/lsm/lsm_set_self_attr_test.c | 2 +- tools/testing/selftests/media_tests/media_device_open.c | 2 +- tools/testing/selftests/media_tests/media_device_test.c | 2 +- tools/testing/selftests/membarrier/membarrier_test_impl.h | 2 +- tools/testing/selftests/mincore/mincore_selftest.c | 4 ++-- tools/testing/selftests/mm/compaction_test.c | 2 +- tools/testing/selftests/mm/cow.c | 2 +- tools/testing/selftests/mm/droppable.c | 2 +- tools/testing/selftests/mm/guard-regions.c | 2 +- tools/testing/selftests/mm/gup_longterm.c | 2 +- tools/testing/selftests/mm/gup_test.c | 2 +- tools/testing/selftests/mm/hmm-tests.c | 2 +- tools/testing/selftests/mm/hugepage-mmap.c | 2 +- tools/testing/selftests/mm/hugepage-mremap.c | 2 +- tools/testing/selftests/mm/hugetlb-madvise.c | 2 +- tools/testing/selftests/mm/hugetlb-read-hwpoison.c | 2 +- tools/testing/selftests/mm/hugetlb-soft-offline.c | 2 +- tools/testing/selftests/mm/hugetlb_dio.c | 2 +- tools/testing/selftests/mm/hugetlb_fault_after_madv.c | 2 +- tools/testing/selftests/mm/hugetlb_madv_vs_map.c | 2 +- tools/testing/selftests/mm/ksm_functional_tests.c | 2 +- tools/testing/selftests/mm/ksm_tests.c | 2 +- tools/testing/selftests/mm/madv_populate.c | 2 +- tools/testing/selftests/mm/map_fixed_noreplace.c | 2 +- tools/testing/selftests/mm/map_hugetlb.c | 2 +- tools/testing/selftests/mm/map_populate.c | 2 +- tools/testing/selftests/mm/mdwe_test.c | 2 +- tools/testing/selftests/mm/memfd_secret.c | 2 +- tools/testing/selftests/mm/merge.c | 2 +- tools/testing/selftests/mm/migration.c | 2 +- tools/testing/selftests/mm/mkdirty.c | 2 +- tools/testing/selftests/mm/mlock-random-test.c | 2 +- tools/testing/selftests/mm/mlock2-tests.c | 2 +- tools/testing/selftests/mm/mrelease_test.c | 2 +- tools/testing/selftests/mm/mremap_dontunmap.c | 2 +- tools/testing/selftests/mm/mremap_test.c | 2 +- tools/testing/selftests/mm/mseal_test.c | 2 +- tools/testing/selftests/mm/on-fault-limit.c | 2 +- tools/testing/selftests/mm/pagemap_ioctl.c | 2 +- tools/testing/selftests/mm/pfnmap.c | 2 +- tools/testing/selftests/mm/pkey-helpers.h | 2 +- tools/testing/selftests/mm/process_madv.c | 2 +- tools/testing/selftests/mm/soft-dirty.c | 2 +- tools/testing/selftests/mm/split_huge_page_test.c | 2 +- tools/testing/selftests/mm/thuge-gen.c | 2 +- tools/testing/selftests/mm/transhuge-stress.c | 2 +- tools/testing/selftests/mm/uffd-common.h | 2 +- tools/testing/selftests/mm/uffd-wp-mremap.c | 2 +- tools/testing/selftests/mm/va_high_addr_switch.c | 2 +- tools/testing/selftests/mm/virtual_address_range.c | 2 +- tools/testing/selftests/mm/vm_util.c | 2 +- tools/testing/selftests/mm/vm_util.h | 2 +- tools/testing/selftests/mount_setattr/mount_setattr_test.c | 2 +- .../move_mount_set_group/move_mount_set_group_test.c | 2 +- tools/testing/selftests/mqueue/mq_open_tests.c | 2 +- tools/testing/selftests/mqueue/mq_perf_tests.c | 2 +- .../selftests/mseal_system_mappings/sysmap_is_sealed.c | 4 ++-- tools/testing/selftests/nci/nci_dev.c | 2 +- tools/testing/selftests/net/af_unix/diag_uid.c | 2 +- tools/testing/selftests/net/af_unix/msg_oob.c | 2 +- tools/testing/selftests/net/af_unix/scm_inq.c | 2 +- tools/testing/selftests/net/af_unix/scm_pidfd.c | 2 +- tools/testing/selftests/net/af_unix/scm_rights.c | 2 +- tools/testing/selftests/net/af_unix/unix_connect.c | 2 +- tools/testing/selftests/net/bind_timewait.c | 2 +- tools/testing/selftests/net/bind_wildcard.c | 2 +- tools/testing/selftests/net/can/test_raw_filter.c | 2 +- tools/testing/selftests/net/cmsg_sender.c | 2 +- tools/testing/selftests/net/epoll_busy_poll.c | 2 +- tools/testing/selftests/net/gro.c | 2 +- tools/testing/selftests/net/ip_local_port_range.c | 2 +- tools/testing/selftests/net/ipsec.c | 2 +- tools/testing/selftests/net/netfilter/conntrack_dump_flush.c | 2 +- tools/testing/selftests/net/netlink-dumps.c | 2 +- tools/testing/selftests/net/proc_net_pktgen.c | 2 +- tools/testing/selftests/net/psock_fanout.c | 2 +- tools/testing/selftests/net/psock_tpacket.c | 2 +- tools/testing/selftests/net/reuseaddr_ports_exhausted.c | 2 +- tools/testing/selftests/net/reuseport_bpf.c | 2 +- tools/testing/selftests/net/reuseport_bpf_numa.c | 2 +- tools/testing/selftests/net/rxtimestamp.c | 2 +- tools/testing/selftests/net/sk_so_peek_off.c | 2 +- tools/testing/selftests/net/so_incoming_cpu.c | 2 +- tools/testing/selftests/net/socket.c | 2 +- tools/testing/selftests/net/tap.c | 2 +- tools/testing/selftests/net/tcp_ao/lib/setup.c | 2 +- tools/testing/selftests/net/tcp_fastopen_backup_key.c | 2 +- tools/testing/selftests/net/tls.c | 2 +- tools/testing/selftests/net/toeplitz.c | 2 +- tools/testing/selftests/net/tun.c | 2 +- tools/testing/selftests/net/udpgso_bench_tx.c | 2 +- tools/testing/selftests/openat2/helpers.h | 2 +- tools/testing/selftests/openat2/openat2_test.c | 2 +- tools/testing/selftests/openat2/rename_attack_test.c | 2 +- tools/testing/selftests/openat2/resolve_test.c | 2 +- tools/testing/selftests/pci_endpoint/pci_endpoint_test.c | 2 +- tools/testing/selftests/perf_events/mmap.c | 2 +- tools/testing/selftests/perf_events/remove_on_exec.c | 2 +- tools/testing/selftests/perf_events/sigtrap_threads.c | 2 +- tools/testing/selftests/perf_events/watermark_signal.c | 2 +- tools/testing/selftests/pid_namespace/pid_max.c | 2 +- tools/testing/selftests/pid_namespace/regression_enomem.c | 2 +- tools/testing/selftests/pidfd/pidfd.h | 2 +- tools/testing/selftests/pidfd/pidfd_bind_mount.c | 2 +- tools/testing/selftests/pidfd/pidfd_fdinfo_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_file_handle_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_getfd_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_info_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_open_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_poll_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_setattr_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_setns_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_test.c | 2 +- tools/testing/selftests/pidfd/pidfd_wait.c | 2 +- tools/testing/selftests/pidfd/pidfd_xattr_test.c | 2 +- tools/testing/selftests/prctl/set-anon-vma-name-test.c | 2 +- tools/testing/selftests/prctl/set-process-name.c | 2 +- tools/testing/selftests/proc/proc-maps-race.c | 2 +- tools/testing/selftests/proc/proc-pid-vm.c | 2 +- tools/testing/selftests/ptrace/get_set_sud.c | 2 +- tools/testing/selftests/ptrace/get_syscall_info.c | 2 +- tools/testing/selftests/ptrace/set_syscall_info.c | 2 +- tools/testing/selftests/ptrace/vmaccess.c | 2 +- tools/testing/selftests/resctrl/resctrl.h | 2 +- tools/testing/selftests/ring-buffer/map_test.c | 2 +- tools/testing/selftests/riscv/abi/pointer_masking.c | 2 +- tools/testing/selftests/riscv/hwprobe/cbo.c | 2 +- tools/testing/selftests/riscv/hwprobe/hwprobe.c | 2 +- tools/testing/selftests/riscv/hwprobe/which-cpus.c | 2 +- tools/testing/selftests/riscv/mm/mmap_bottomup.c | 2 +- tools/testing/selftests/riscv/mm/mmap_default.c | 2 +- tools/testing/selftests/riscv/mm/mmap_test.h | 2 +- tools/testing/selftests/riscv/sigreturn/sigreturn.c | 2 +- tools/testing/selftests/riscv/vector/v_initval.c | 2 +- tools/testing/selftests/riscv/vector/vstate_prctl.c | 2 +- tools/testing/selftests/rseq/basic_percpu_ops_test.c | 2 +- tools/testing/selftests/rseq/rseq.c | 2 +- tools/testing/selftests/rtc/rtctest.c | 2 +- tools/testing/selftests/seccomp/seccomp_benchmark.c | 2 +- tools/testing/selftests/seccomp/seccomp_bpf.c | 2 +- tools/testing/selftests/sgx/main.c | 2 +- tools/testing/selftests/signal/mangle_uc_sigmask.c | 2 +- tools/testing/selftests/signal/sas.c | 2 +- tools/testing/selftests/sparc64/drivers/adi-test.c | 2 +- tools/testing/selftests/sync/Makefile | 2 +- tools/testing/selftests/sync/sync_test.c | 2 +- tools/testing/selftests/sync/synctest.h | 2 +- tools/testing/selftests/syscall_user_dispatch/sud_test.c | 2 +- tools/testing/selftests/tdx/tdx_guest_test.c | 2 +- tools/testing/selftests/timens/timens.h | 2 +- tools/testing/selftests/timers/adjtick.c | 2 +- tools/testing/selftests/timers/alarmtimer-suspend.c | 2 +- tools/testing/selftests/timers/change_skew.c | 2 +- tools/testing/selftests/timers/clocksource-switch.c | 2 +- tools/testing/selftests/timers/freq-step.c | 2 +- tools/testing/selftests/timers/inconsistency-check.c | 2 +- tools/testing/selftests/timers/leap-a-day.c | 2 +- tools/testing/selftests/timers/leapcrash.c | 2 +- tools/testing/selftests/timers/mqueue-lat.c | 2 +- tools/testing/selftests/timers/nanosleep.c | 2 +- tools/testing/selftests/timers/nsleep-lat.c | 2 +- tools/testing/selftests/timers/posix_timers.c | 2 +- tools/testing/selftests/timers/raw_skew.c | 2 +- tools/testing/selftests/timers/rtcpie.c | 2 +- tools/testing/selftests/timers/set-2038.c | 2 +- tools/testing/selftests/timers/set-tai.c | 2 +- tools/testing/selftests/timers/set-timer-lat.c | 2 +- tools/testing/selftests/timers/set-tz.c | 2 +- tools/testing/selftests/timers/skew_consistency.c | 2 +- tools/testing/selftests/timers/threadtest.c | 2 +- tools/testing/selftests/timers/valid-adjtimex.c | 2 +- tools/testing/selftests/tmpfs/bug-link-o-tmpfile.c | 2 +- tools/testing/selftests/tty/tty_tstamp_update.c | 2 +- tools/testing/selftests/uevent/uevent_filtering.c | 2 +- tools/testing/selftests/user_events/abi_test.c | 2 +- tools/testing/selftests/user_events/dyn_test.c | 2 +- tools/testing/selftests/user_events/ftrace_test.c | 2 +- tools/testing/selftests/user_events/perf_test.c | 2 +- tools/testing/selftests/user_events/user_events_selftests.h | 2 +- tools/testing/selftests/vDSO/vdso_test_abi.c | 2 +- tools/testing/selftests/vDSO/vdso_test_chacha.c | 2 +- tools/testing/selftests/vDSO/vdso_test_clock_getres.c | 2 +- tools/testing/selftests/vDSO/vdso_test_correctness.c | 2 +- tools/testing/selftests/vDSO/vdso_test_getcpu.c | 2 +- tools/testing/selftests/vDSO/vdso_test_getrandom.c | 2 +- tools/testing/selftests/vDSO/vdso_test_gettimeofday.c | 2 +- tools/testing/selftests/x86/corrupt_xstate_header.c | 2 +- tools/testing/selftests/x86/helpers.h | 2 +- tools/testing/selftests/x86/lam.c | 2 +- tools/testing/selftests/x86/syscall_numbering.c | 2 +- tools/testing/selftests/x86/test_mremap_vdso.c | 2 +- tools/testing/selftests/x86/test_vsyscall.c | 2 +- tools/testing/selftests/x86/xstate.h | 2 +- 280 files changed, 286 insertions(+), 280 deletions(-) -- 2.43.0

2 days, 2 hours

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[PATCH 0/2] selftests/verification: Add initial RV tests

by Gabriele Monaco

Add a series of tests to validate the RV tracefs API and basic functionality. * available monitors: Check that all monitors (from the monitors folder) appear as available and have a description. Works with nested monitors. * enable/disable: Enable and disable all monitors and validate both the enabled file and the enabled_monitors. Check that enabling container monitors enables all nested monitors. * reactors: Set all reactors and validate the setting, also for nested monitors. * wwnr with printk: wwnr is broken on purpose, run it with a load and check that the printk reactor works. Also validate disabling reacting_on or monitoring_on prevents reactions. These tests use the ftracetest suite. The first patch of the series adapts ftracetest to make this possible. The enable/disable test cannot pass on upstream without the application of the fix in [1]. [1] - https://lore.kernel.org/lkml/87tt0t4u19.fsf@yellow.woof To: Steven Rostedt <rostedt(a)goodmis.org> To: Nam Cao <namcao(a)linutronix.de> Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: John Kacur <jkacur(a)redhat.com> Cc: Waylon Cude <wcude(a)redhat.com> Cc: linux-trace-kernel(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Gabriele Monaco (2): selftest/ftrace: Generalise ftracetest to use with RV selftests/verification: Add initial RV tests MAINTAINERS | 1 + tools/testing/selftests/ftrace/ftracetest | 34 ++++++--- .../ftrace/test.d/00basic/mount_options.tc | 2 +- .../testing/selftests/ftrace/test.d/functions | 6 +- .../testing/selftests/verification/.gitignore | 2 + tools/testing/selftests/verification/Makefile | 8 ++ tools/testing/selftests/verification/config | 1 + tools/testing/selftests/verification/settings | 1 + .../selftests/verification/test.d/functions | 39 ++++++++++ .../test.d/rv_monitor_enable_disable.tc | 75 +++++++++++++++++++ .../verification/test.d/rv_monitor_reactor.tc | 68 +++++++++++++++++ .../test.d/rv_monitors_available.tc | 18 +++++ .../verification/test.d/rv_wwnr_printk.tc | 29 +++++++ .../verification/verificationtest-ktap | 8 ++ 14 files changed, 278 insertions(+), 14 deletions(-) create mode 100644 tools/testing/selftests/verification/.gitignore create mode 100644 tools/testing/selftests/verification/Makefile create mode 100644 tools/testing/selftests/verification/config create mode 100644 tools/testing/selftests/verification/settings create mode 100644 tools/testing/selftests/verification/test.d/functions create mode 100644 tools/testing/selftests/verification/test.d/rv_monitor_enable_disable.tc create mode 100644 tools/testing/selftests/verification/test.d/rv_monitor_reactor.tc create mode 100644 tools/testing/selftests/verification/test.d/rv_monitors_available.tc create mode 100644 tools/testing/selftests/verification/test.d/rv_wwnr_printk.tc create mode 100644 tools/testing/selftests/verification/verificationtest-ktap base-commit: cec1e6e5d1ab33403b809f79cd20d6aff124ccfe -- 2.51.0

2 days, 2 hours

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[PATCH] selftests: harness: Support KCOV.

by Kuniyuki Iwashima

While writing a selftest with kselftest_harness.h, I often want to check which paths are actually exercised. Let's support generating KCOV coverage data. We can specify the output directory via the KCOV_OUTPUT environment variable, and the number of instructions to collect via the KCOV_SLOTS environment variable. # KCOV_OUTPUT=$PWD/kcov KCOV_SLOTS=$((4096 * 2)) \ ./tools/testing/selftests/net/af_unix/scm_inq Both variables can also be specified as the make variable. # make -C tools/testing/selftests/ \ KCOV_OUTPUT=$PWD/kcov KCOV_SLOTS=$((4096 * 4)) \ kselftest_override_timeout=60 TARGETS=net/af_unix run_tests The coverage data can be simply decoded with addr2line: $ cat kcov/* | sort | uniq | addr2line -e vmlinux | grep unix net/unix/af_unix.c:1056 net/unix/af_unix.c:3138 net/unix/af_unix.c:3834 net/unix/af_unix.c:3838 net/unix/af_unix.c:311 (discriminator 2) ... or more nicely with a script embedded in vock [0]: $ cat kcov/* | sort | uniq > local.log $ python3 ~/kernel/tools/vock/report.py \ --kernel-src ./ --vmlinux ./vmlinux \ --mode local --local-log local.log --filter unix ... ------------------------------- Coverage Report -------------------------------- 📄 net/unix/af_unix.c (276 lines) ... 942 | static int unix_setsockopt(struct socket *sock, int level, int optname, 943 | sockptr_t optval, unsigned int optlen) 944 | { ... 961 | switch (optname) { 962 | case SO_INQ: 963 > if (sk->sk_type != SOCK_STREAM) 964 | return -EINVAL; 965 | 966 > if (val > 1 || val < 0) 967 | return -EINVAL; 968 | 969 > WRITE_ONCE(u->recvmsg_inq, val); 970 | break; Link: https://github.com/kzall0c/vock/blob/f3d97de9954f9df758c0ab287ca7e24e654288… #[0] Signed-off-by: Kuniyuki Iwashima <kuniyu(a)google.com> --- Documentation/dev-tools/kselftest.rst | 41 +++++++ tools/testing/selftests/Makefile | 14 ++- tools/testing/selftests/kselftest_harness.h | 128 +++++++++++++++++++- 3 files changed, 174 insertions(+), 9 deletions(-) diff --git a/Documentation/dev-tools/kselftest.rst b/Documentation/dev-tools/kselftest.rst index 18c2da67fae42..5c2b92ac4a300 100644 --- a/Documentation/dev-tools/kselftest.rst +++ b/Documentation/dev-tools/kselftest.rst @@ -200,6 +200,47 @@ You can look at the TAP output to see if you ran into the timeout. Test runners which know a test must run under a specific time can then optionally treat these timeouts then as fatal. +KCOV for selftests +================== + +Selftests built with `kselftest_harness.h` natively support generating +KCOV coverage data. See :doc:`KCOV: code coverage for fuzzing </dev-tools/kcov>` +for prerequisites. + +You can specify the output directory with the `KCOV_OUTPUT` environment +variable. Additionally, you can specify the number of instructions to +collect with the `KCOV_SLOTS` environment variable :: + + # KCOV_OUTPUT=$PWD/kcov KCOV_SLOTS=$((4096 * 2)) \ + ./tools/testing/selftests/net/af_unix/scm_inq + +In the output directory, a coverage file is generated for each test +case in the selftest :: + + $ ls kcov/ + scm_inq.dgram.basic scm_inq.seqpacket.basic scm_inq.stream.basic + +The default value of `KCOV_SLOTS` is `4096`, and `KCOV_SLOTS` multiplied +by `sizeof(unsigned long)` must be multiple of `4096`, so the smallest +value is `512`. + +Both `KCOV_OUTPUT` and `KCOV_SLOTS` can be specified as the variables +on the `make` command line :: + + # make -C tools/testing/selftests/ \ + kselftest_override_timeout=60 \ + KCOV_OUTPUT=$PWD/kcov KCOV_SLOTS=$((4096 * 4)) \ + TARGETS=net/af_unix run_tests + +The collected data can be decoded with `addr2line` :: + + $ cat kcov/* | sort | uniq | addr2line -e vmlinux | grep unix + net/unix/af_unix.c:1056 + net/unix/af_unix.c:3138 + net/unix/af_unix.c:3834 + net/unix/af_unix.c:3838 + ... + Packaging selftests =================== diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index c46ebdb9b8ef7..40e70fb1a3478 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -218,12 +218,14 @@ all: done; exit $$ret; run_tests: all - @for TARGET in $(TARGETS); do \ - BUILD_TARGET=$$BUILD/$$TARGET; \ - $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_tests \ - SRC_PATH=$(shell readlink -e $$(pwd)) \ - OBJ_PATH=$(BUILD) \ - O=$(abs_objtree); \ + @for TARGET in $(TARGETS); do \ + BUILD_TARGET=$$BUILD/$$TARGET; \ + $(MAKE) OUTPUT=$$BUILD_TARGET \ + KCOV_OUTPUT=$(abspath $(KCOV_OUTPUT)) \ + -C $$TARGET run_tests \ + SRC_PATH=$(shell readlink -e $$(pwd)) \ + OBJ_PATH=$(BUILD) \ + O=$(abs_objtree); \ done; hotplug: diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h index 3f66e862e83eb..cba8020853b5d 100644 --- a/tools/testing/selftests/kselftest_harness.h +++ b/tools/testing/selftests/kselftest_harness.h @@ -56,6 +56,8 @@ #include <asm/types.h> #include <ctype.h> #include <errno.h> +#include <fcntl.h> +#include <linux/kcov.h> #include <linux/unistd.h> #include <poll.h> #include <stdbool.h> @@ -63,7 +65,9 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <sys/ioctl.h> #include <sys/mman.h> +#include <sys/stat.h> #include <sys/types.h> #include <sys/wait.h> #include <unistd.h> @@ -401,7 +405,8 @@ const FIXTURE_VARIANT(fixture_name) *variant); \ static void wrapper_##fixture_name##_##test_name( \ struct __test_metadata *_metadata, \ - struct __fixture_variant_metadata *variant) \ + struct __fixture_variant_metadata *variant, \ + char *test_full_name) \ { \ /* fixture data is alloced, setup, and torn down per call. */ \ FIXTURE_DATA(fixture_name) self_private, *self = NULL; \ @@ -430,7 +435,9 @@ if (_metadata->exit_code) \ _exit(0); \ *_metadata->no_teardown = false; \ + enable_kcov(_metadata); \ fixture_name##_##test_name(_metadata, self, variant->data); \ + disable_kcov(_metadata, test_full_name); \ _metadata->teardown_fn(false, _metadata, self, variant->data); \ _exit(0); \ } else if (child < 0 || child != waitpid(child, &status, 0)) { \ @@ -470,6 +477,8 @@ object->teardown_fn = &wrapper_##fixture_name##_##test_name##_teardown; \ object->termsig = signal; \ object->timeout = tmout; \ + object->kcov_fd = -1; \ + object->kcov_slots = -1; \ _##fixture_name##_##test_name##_object = object; \ __register_test(object); \ } \ @@ -908,7 +917,8 @@ __register_fixture_variant(struct __fixture_metadata *f, struct __test_metadata { const char *name; void (*fn)(struct __test_metadata *, - struct __fixture_variant_metadata *); + struct __fixture_variant_metadata *, + char *test_name); pid_t pid; /* pid of test when being run */ struct __fixture_metadata *fixture; void (*teardown_fn)(bool in_parent, struct __test_metadata *_metadata, @@ -923,6 +933,10 @@ struct __test_metadata { const void *variant; struct __test_results *results; struct __test_metadata *prev, *next; + int kcov_fd; + int kcov_slots; + char *kcov_dir; + unsigned long *kcov_mem; }; static inline bool __test_passed(struct __test_metadata *metadata) @@ -1185,6 +1199,114 @@ static bool test_enabled(int argc, char **argv, return !has_positive; } +#define KCOV_SLOTS 4096 + +static void enable_kcov(struct __test_metadata *t) +{ + char *slots; + int err; + + t->kcov_dir = getenv("KCOV_OUTPUT"); + if (!t->kcov_dir || *t->kcov_dir == '\0') + return; + + slots = getenv("KCOV_SLOTS"); + if (slots && *slots != '\0') + sscanf(slots, "%d", &t->kcov_slots); + if (t->kcov_slots <= 0) + t->kcov_slots = KCOV_SLOTS; + + t->kcov_fd = open("/sys/kernel/debug/kcov", O_RDWR); + if (t->kcov_fd < 0) { + ksft_print_msg("ERROR OPENING KCOV FD\n"); + goto err; + } + + err = ioctl(t->kcov_fd, KCOV_INIT_TRACE, t->kcov_slots); + if (err) { + ksft_print_msg("ERROR INITIALISING KCOV\n"); + goto err; + } + + t->kcov_mem = mmap(NULL, sizeof(unsigned long) * t->kcov_slots, + PROT_READ | PROT_WRITE, MAP_SHARED, t->kcov_fd, 0); + if ((void *)t->kcov_mem == MAP_FAILED) { + ksft_print_msg("ERROR ALLOCATING MEMORY FOR KCOV\n"); + goto err; + } + + err = ioctl(t->kcov_fd, KCOV_ENABLE, KCOV_TRACE_PC); + if (err) { + ksft_print_msg("ERROR ENABLING KCOV\n"); + goto err; + } + + __atomic_store_n(&t->kcov_mem[0], 0, __ATOMIC_RELAXED); + return; +err: + t->exit_code = KSFT_FAIL; + _exit(KSFT_FAIL); +} + +static void disable_kcov(struct __test_metadata *t, char *test_name) +{ + int slots, err, dir, fd, i; + + if (t->kcov_fd == -1) + return; + + slots = __atomic_load_n(&t->kcov_mem[0], __ATOMIC_RELAXED); + if (slots == t->kcov_slots - 1) + ksft_print_msg("Set KCOV_SLOTS to a value greater than %d\n", t->kcov_slots); + + err = ioctl(t->kcov_fd, KCOV_DISABLE, 0); + if (err) { + ksft_print_msg("ERROR DISABLING KCOV\n"); + goto out; + } + + err = mkdir(t->kcov_dir, 0755); + if (err == -1 && errno != EEXIST) { + ksft_print_msg("ERROR CREATING '%s'\n", t->kcov_dir); + goto out; + } + err = 0; + + dir = open(t->kcov_dir, O_DIRECTORY); + if (dir < 0) { + ksft_print_msg("ERROR OPENING %s\n", t->kcov_dir); + err = dir; + goto out; + } + + fd = openat(dir, test_name, O_RDWR | O_CREAT | O_TRUNC); + + close(dir); + + if (fd == -1) { + ksft_print_msg("ERROR CREATING '%s' at '%s'\n", test_name, t->kcov_dir); + err = fd; + goto out; + } + + for (i = 0; i < slots; i++) { + char buf[64]; + int size; + + size = snprintf(buf, 64, "0x%lx\n", t->kcov_mem[i + 1]); + write(fd, buf, size); + } + +out: + munmap(t->kcov_mem, sizeof(t->kcov_mem[0]) * t->kcov_slots); + close(t->kcov_fd); + + if (err) { + t->exit_code = KSFT_FAIL; + _exit(KSFT_FAIL); + } +} + static void __run_test(struct __fixture_metadata *f, struct __fixture_variant_metadata *variant, struct __test_metadata *t) @@ -1216,7 +1338,7 @@ static void __run_test(struct __fixture_metadata *f, t->exit_code = KSFT_FAIL; } else if (child == 0) { setpgrp(); - t->fn(t, variant); + t->fn(t, variant, test_name); _exit(t->exit_code); } else { t->pid = child; -- 2.51.0.858.gf9c4a03a3a-goog

2 days, 2 hours

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[PATCH] Documentation: kunit: Fix kunit_device_register() example

by Robin Murphy

kunit_device_register() only returns error pointers, not NULL. Furthermore for regular users who aren't testing the KUnit API itself, errors most likely represent major system failure (e.g. OOM or sysfs collision) beyond the scope of their own test conditions. Replace the assert with straightforward error handling for clarity. Signed-off-by: Robin Murphy <robin.murphy(a)arm.com> --- This seemed the logical conclusion by inspection, but please do correct me if I've misunderstood the intent... --- Documentation/dev-tools/kunit/usage.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/dev-tools/kunit/usage.rst b/Documentation/dev-tools/kunit/usage.rst index 038f480074fd..3452c739dd44 100644 --- a/Documentation/dev-tools/kunit/usage.rst +++ b/Documentation/dev-tools/kunit/usage.rst @@ -873,7 +873,8 @@ For example: // Create a fake device. fake_device = kunit_device_register(test, "my_device"); - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, fake_device) + if (IS_ERR(fake_device)) + return; // Pass it to functions which need a device. dev_managed_string = devm_kstrdup(fake_device, "Hello, World!"); -- 2.34.1

2 days, 5 hours

2
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[PATCH][v4] hung_task: Panic when there are more than N hung tasks at the same time

by lirongqing

From: Li RongQing <lirongqing(a)baidu.com> Currently, when 'hung_task_panic' is enabled, the kernel panics immediately upon detecting the first hung task. However, some hung tasks are transient and allow system recovery, while persistent hangs should trigger a panic when accumulating beyond a threshold. Extend the 'hung_task_panic' sysctl to accept a threshold value specifying the number of hung tasks that must be detected before triggering a kernel panic. This provides finer control for environments where transient hangs may occur but persistent hangs should be fatal. The sysctl now accepts: - 0: don't panic (maintains original behavior) - 1: panic on first hung task (maintains original behavior) - N > 1: panic after N hung tasks are detected in a single scan This maintains backward compatibility while providing flexibility for different hang scenarios. Signed-off-by: Li RongQing <lirongqing(a)baidu.com> Cc: Andrew Jeffery <andrew(a)codeconstruct.com.au> Cc: Anshuman Khandual <anshuman.khandual(a)arm.com> Cc: Arnd Bergmann <arnd(a)arndb.de> Cc: David Hildenbrand <david(a)redhat.com> Cc: Florian Wesphal <fw(a)strlen.de> Cc: Jakub Kacinski <kuba(a)kernel.org> Cc: Jason A. Donenfeld <jason(a)zx2c4.com> Cc: Joel Granados <joel.granados(a)kernel.org> Cc: Joel Stanley <joel(a)jms.id.au> Cc: Jonathan Corbet <corbet(a)lwn.net> Cc: Kees Cook <kees(a)kernel.org> Cc: Lance Yang <lance.yang(a)linux.dev> Cc: Liam Howlett <liam.howlett(a)oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: "Masami Hiramatsu (Google)" <mhiramat(a)kernel.org> Cc: "Paul E . McKenney" <paulmck(a)kernel.org> Cc: Pawan Gupta <pawan.kumar.gupta(a)linux.intel.com> Cc: Petr Mladek <pmladek(a)suse.com> Cc: Phil Auld <pauld(a)redhat.com> Cc: Randy Dunlap <rdunlap(a)infradead.org> Cc: Russell King <linux(a)armlinux.org.uk> Cc: Shuah Khan <shuah(a)kernel.org> Cc: Simon Horman <horms(a)kernel.org> Cc: Stanislav Fomichev <sdf(a)fomichev.me> Cc: Steven Rostedt <rostedt(a)goodmis.org> --- diff with v3: comments modification, suggested by Lance, Masami, Randy and Petr diff with v2: do not add a new sysctl, extend hung_task_panic, suggested by Kees Cook Documentation/admin-guide/kernel-parameters.txt | 20 +++++++++++++------- Documentation/admin-guide/sysctl/kernel.rst | 9 +++++---- arch/arm/configs/aspeed_g5_defconfig | 2 +- kernel/configs/debug.config | 2 +- kernel/hung_task.c | 15 ++++++++++----- lib/Kconfig.debug | 9 +++++---- tools/testing/selftests/wireguard/qemu/kernel.config | 2 +- 7 files changed, 36 insertions(+), 23 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index a51ab46..492f0bc 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1992,14 +1992,20 @@ the added memory block itself do not be affected. hung_task_panic= - [KNL] Should the hung task detector generate panics. - Format: 0 | 1 + [KNL] Number of hung tasks to trigger kernel panic. + Format: <int> + + When set to a non-zero value, a kernel panic will be triggered if + the number of detected hung tasks reaches this value. + + 0: don't panic + 1: panic immediately on first hung task + N: panic after N hung tasks are detected in a single scan - A value of 1 instructs the kernel to panic when a - hung task is detected. The default value is controlled - by the CONFIG_BOOTPARAM_HUNG_TASK_PANIC build-time - option. The value selected by this boot parameter can - be changed later by the kernel.hung_task_panic sysctl. + The default value is controlled by the + CONFIG_BOOTPARAM_HUNG_TASK_PANIC build-time option. The value + selected by this boot parameter can be changed later by the + kernel.hung_task_panic sysctl. hvc_iucv= [S390] Number of z/VM IUCV hypervisor console (HVC) terminal devices. Valid values: 0..8 diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index f3ee807..0065a55 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -397,13 +397,14 @@ a hung task is detected. hung_task_panic =============== -Controls the kernel's behavior when a hung task is detected. +When set to a non-zero value, a kernel panic will be triggered if the +number of hung tasks found during a single scan reaches this value. This file shows up if ``CONFIG_DETECT_HUNG_TASK`` is enabled. -= ================================================= += ======================================================= 0 Continue operation. This is the default behavior. -1 Panic immediately. -= ================================================= +N Panic when N hung tasks are found during a single scan. += ======================================================= hung_task_check_count diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig index 61cee1e..c3b0d5f 100644 --- a/arch/arm/configs/aspeed_g5_defconfig +++ b/arch/arm/configs/aspeed_g5_defconfig @@ -308,7 +308,7 @@ CONFIG_PANIC_ON_OOPS=y CONFIG_PANIC_TIMEOUT=-1 CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y -CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y +CONFIG_BOOTPARAM_HUNG_TASK_PANIC=1 CONFIG_WQ_WATCHDOG=y # CONFIG_SCHED_DEBUG is not set CONFIG_FUNCTION_TRACER=y diff --git a/kernel/configs/debug.config b/kernel/configs/debug.config index e81327d..9f6ab7d 100644 --- a/kernel/configs/debug.config +++ b/kernel/configs/debug.config @@ -83,7 +83,7 @@ CONFIG_SLUB_DEBUG_ON=y # # Debug Oops, Lockups and Hangs # -# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set +CONFIG_BOOTPARAM_HUNG_TASK_PANIC=0 # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set CONFIG_DEBUG_ATOMIC_SLEEP=y CONFIG_DETECT_HUNG_TASK=y diff --git a/kernel/hung_task.c b/kernel/hung_task.c index b2c1f14..84b4b04 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -81,7 +81,7 @@ static unsigned int __read_mostly sysctl_hung_task_all_cpu_backtrace; * hung task is detected: */ static unsigned int __read_mostly sysctl_hung_task_panic = - IS_ENABLED(CONFIG_BOOTPARAM_HUNG_TASK_PANIC); + CONFIG_BOOTPARAM_HUNG_TASK_PANIC; static int hung_task_panic(struct notifier_block *this, unsigned long event, void *ptr) @@ -218,8 +218,11 @@ static inline void debug_show_blocker(struct task_struct *task, unsigned long ti } #endif -static void check_hung_task(struct task_struct *t, unsigned long timeout) +static void check_hung_task(struct task_struct *t, unsigned long timeout, + unsigned long prev_detect_count) { + unsigned long total_hung_task; + if (!task_is_hung(t, timeout)) return; @@ -229,9 +232,10 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) */ sysctl_hung_task_detect_count++; + total_hung_task = sysctl_hung_task_detect_count - prev_detect_count; trace_sched_process_hang(t); - if (sysctl_hung_task_panic) { + if (sysctl_hung_task_panic && total_hung_task >= sysctl_hung_task_panic) { console_verbose(); hung_task_show_lock = true; hung_task_call_panic = true; @@ -300,6 +304,7 @@ static void check_hung_uninterruptible_tasks(unsigned long timeout) int max_count = sysctl_hung_task_check_count; unsigned long last_break = jiffies; struct task_struct *g, *t; + unsigned long prev_detect_count = sysctl_hung_task_detect_count; /* * If the system crashed already then all bets are off, @@ -320,7 +325,7 @@ static void check_hung_uninterruptible_tasks(unsigned long timeout) last_break = jiffies; } - check_hung_task(t, timeout); + check_hung_task(t, timeout, prev_detect_count); } unlock: rcu_read_unlock(); @@ -389,7 +394,7 @@ static const struct ctl_table hung_task_sysctls[] = { .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE, + .extra2 = SYSCTL_INT_MAX, }, { .procname = "hung_task_check_count", diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 3034e294..3976c90 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1258,12 +1258,13 @@ config DEFAULT_HUNG_TASK_TIMEOUT Keeping the default should be fine in most cases. config BOOTPARAM_HUNG_TASK_PANIC - bool "Panic (Reboot) On Hung Tasks" + int "Number of hung tasks to trigger kernel panic" depends on DETECT_HUNG_TASK + default 0 help - Say Y here to enable the kernel to panic on "hung tasks", - which are bugs that cause the kernel to leave a task stuck - in uninterruptible "D" state. + When set to a non-zero value, a kernel panic will be triggered + if the number of hung tasks found during a single scan reaches + this value. The panic can be used in combination with panic_timeout, to cause the system to reboot automatically after a diff --git a/tools/testing/selftests/wireguard/qemu/kernel.config b/tools/testing/selftests/wireguard/qemu/kernel.config index 936b18b..0504c11 100644 --- a/tools/testing/selftests/wireguard/qemu/kernel.config +++ b/tools/testing/selftests/wireguard/qemu/kernel.config @@ -81,7 +81,7 @@ CONFIG_WQ_WATCHDOG=y CONFIG_DETECT_HUNG_TASK=y CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y -CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y +CONFIG_BOOTPARAM_HUNG_TASK_PANIC=1 CONFIG_PANIC_TIMEOUT=-1 CONFIG_STACKTRACE=y CONFIG_EARLY_PRINTK=y -- 2.9.4

2 days, 6 hours

7
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[PATCH] kunit: test_dev_action: Correctly cast 'priv' pointer to long*

by Florian Schmaus

The previous implementation incorrectly assumed the original type of 'priv' was void**, leading to an unnecessary and misleading cast. Correct the cast of the 'priv' pointer in test_dev_action() to its actual type, long*, removing an unnecessary cast. As an additional benefit, this fixes an out-of-bounds CHERI fault on hardware with architectural capabilities. The original implementation tried to store a capability-sized pointer using the 'priv' pointer. However, the 'priv' pointer's capability only granted access to the memory region of its original long type, leading to a bounds violation since the size of a long is smaller than the size of a capability. This change ensures that the pointer usage respects the capabilities' bounds. Signed-off-by: Florian Schmaus <florian.schmaus(a)codasip.com> --- lib/kunit/kunit-test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/kunit/kunit-test.c b/lib/kunit/kunit-test.c index 8c01eabd4eaf..957b67818489 100644 --- a/lib/kunit/kunit-test.c +++ b/lib/kunit/kunit-test.c @@ -739,7 +739,7 @@ static struct kunit_case kunit_current_test_cases[] = { static void test_dev_action(void *priv) { - *(void **)priv = (void *)1; + *(long*)priv = 1; } static void kunit_device_test(struct kunit *test) -- 2.51.0

2 days, 6 hours

2
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[PATCHv4 net-next 0/4] net: common feature compute for upper interface

by Hangbin Liu

Some high-level virtual drivers need to compute features from their lower devices, but each currently has its own implementation and may miss some feature computations. This patch set introduces a common function to compute features for such devices. Currently, bonding, team, and bridge have been updated to use the new helper. v4: * update needed_{headroom, tailroom} in the common helper (Ido Schimmel) * remove unneeded err in team (Stanislav Fomichev) * remove selftest as `ethtool -k` does not test the dev->*_features. We can add back the selftest when there is a good way to test. (Sabrina Dubroca) v3: a) fix hw_enc_features asign order (Sabrina Dubroca) b) set virtual dev feature defination in netdev_features.h (Jakub Kicinski) c) remove unneeded err in team_del_slave (Stanislav Fomichev) d) remove NETIF_F_HW_ESP test as it needs to be test with GSO pkts (Sabrina Dubroca) v2: a) remove hard_header_len setting. I will set needed_headroom for bond/team in a separate patch as bridge has it's own ways. (Ido Schimmel) b) Add test file to Makefile, set RET=0 to a proper location. (Ido Schimmel) Hangbin Liu (4): net: add a common function to compute features from lowers devices bonding: use common function to compute the features team: use common function to compute the features net: bridge: use common function to compute the features drivers/net/bonding/bond_main.c | 99 ++------------------------------- drivers/net/team/team_core.c | 83 ++------------------------- include/linux/netdev_features.h | 18 ++++++ include/linux/netdevice.h | 1 + net/bridge/br_if.c | 22 +------- net/core/dev.c | 95 +++++++++++++++++++++++++++++++ 6 files changed, 127 insertions(+), 191 deletions(-) -- 2.50.1

2 days, 8 hours

3
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[PATCH v5 0/7] liveupdate: Rework KHO for in-kernel users

by Pasha Tatashin

These patches are taken from the LUOv4 series [1] and address recent comments from Pratyush. This series refactors the KHO framework to better support in-kernel users like the upcoming LUO. The current design, which relies on a notifier chain and debugfs for control, is too restrictive for direct programmatic use. The core of this rework is the removal of the notifier chain in favor of a direct registration API. This decouples clients from the shutdown-time finalization sequence, allowing them to manage their preserved state more flexibly and at any time. In support of this new model, this series also: - Exports kho_finalize() and kho_abort() for programmatic control. - Makes the debugfs interface optional. - Introduces APIs to unpreserve memory and fixes a bug in the abort path where client state was being incorrectly discarded. Note that this is an interim step, as a more comprehensive fix is planned as part of the stateless KHO work [2]. - Moves all KHO code into a new kernel/liveupdate/ directory to consolidate live update components. [1] https://lore.kernel.org/all/20250929010321.3462457-1-pasha.tatashin@soleen.… [2] https://lore.kernel.org/all/20251001011941.1513050-1-jasonmiu@google.com Mike Rapoport (Microsoft) (1): kho: drop notifiers Pasha Tatashin (6): kho: allow to drive kho from within kernel kho: make debugfs interface optional kho: add interfaces to unpreserve folios and page ranes kho: don't unpreserve memory during abort liveupdate: kho: move to kernel/liveupdate kho: move kho debugfs directory to liveupdate Documentation/core-api/kho/concepts.rst | 2 +- MAINTAINERS | 3 +- include/linux/kexec_handover.h | 53 +- init/Kconfig | 2 + kernel/Kconfig.kexec | 15 - kernel/Makefile | 2 +- kernel/liveupdate/Kconfig | 30 ++ kernel/liveupdate/Makefile | 4 + kernel/{ => liveupdate}/kexec_handover.c | 515 ++++++++------------ kernel/liveupdate/kexec_handover_debug.c | 216 ++++++++ kernel/liveupdate/kexec_handover_internal.h | 47 ++ lib/test_kho.c | 30 +- mm/memblock.c | 60 +-- tools/testing/selftests/kho/init.c | 2 +- tools/testing/selftests/kho/vmtest.sh | 1 + 15 files changed, 553 insertions(+), 429 deletions(-) create mode 100644 kernel/liveupdate/Kconfig create mode 100644 kernel/liveupdate/Makefile rename kernel/{ => liveupdate}/kexec_handover.c (79%) create mode 100644 kernel/liveupdate/kexec_handover_debug.c create mode 100644 kernel/liveupdate/kexec_handover_internal.h base-commit: 4a71531471926e3c391665ee9c42f4e0295a4585 -- 2.51.0.618.g983fd99d29-goog

2 days, 17 hours

3
11
0 0

[PATCH] selftests: arg_parsing: Ensure data is flushed to disk before reading.

by Xing Guo

Recently, I noticed a selftest failure in my local environment. The test_parse_test_list_file writes some data to /tmp/bpf_arg_parsing_test.XXXXXX and parse_test_list_file() will read the data back. However, after writing data to that file, we forget to call fsync() and it's causing testing failure in my laptop. This patch helps fix it by adding the missing fsync() call. Signed-off-by: Xing Guo <higuoxing(a)gmail.com> --- tools/testing/selftests/bpf/prog_tests/arg_parsing.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/bpf/prog_tests/arg_parsing.c b/tools/testing/selftests/bpf/prog_tests/arg_parsing.c index bb143de68875..4f071943ffb0 100644 --- a/tools/testing/selftests/bpf/prog_tests/arg_parsing.c +++ b/tools/testing/selftests/bpf/prog_tests/arg_parsing.c @@ -140,6 +140,7 @@ static void test_parse_test_list_file(void) fprintf(fp, "testA/subtest2\n"); fprintf(fp, "testC_no_eof_newline"); fflush(fp); + fsync(fd); if (!ASSERT_OK(ferror(fp), "prepare tmp")) goto out_fclose; -- 2.51.0

2 days, 18 hours

5
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[PATCH] selftests/futex: skip tests if shmget unsupported

by Carlos Llamas

On systems where the shmget() syscall is not supported, tests like anon_page and shared_waitv will fail. Skip these tests in such cases to allow the rest of the test suite to run. Signed-off-by: Carlos Llamas <cmllamas(a)google.com> --- tools/testing/selftests/futex/functional/futex_wait.c | 2 ++ tools/testing/selftests/futex/functional/futex_waitv.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/tools/testing/selftests/futex/functional/futex_wait.c b/tools/testing/selftests/futex/functional/futex_wait.c index 152ca4612886..1269642bb662 100644 --- a/tools/testing/selftests/futex/functional/futex_wait.c +++ b/tools/testing/selftests/futex/functional/futex_wait.c @@ -71,6 +71,8 @@ TEST(anon_page) /* Testing an anon page shared memory */ shm_id = shmget(IPC_PRIVATE, 4096, IPC_CREAT | 0666); if (shm_id < 0) { + if (errno == ENOSYS) + ksft_exit_skip("shmget syscall not supported\n"); perror("shmget"); exit(1); } diff --git a/tools/testing/selftests/futex/functional/futex_waitv.c b/tools/testing/selftests/futex/functional/futex_waitv.c index c684b10eb76e..3bc4e5dc70e7 100644 --- a/tools/testing/selftests/futex/functional/futex_waitv.c +++ b/tools/testing/selftests/futex/functional/futex_waitv.c @@ -86,6 +86,8 @@ TEST(shared_waitv) int shm_id = shmget(IPC_PRIVATE, 4096, IPC_CREAT | 0666); if (shm_id < 0) { + if (errno == ENOSYS) + ksft_exit_skip("shmget syscall not supported\n"); perror("shmget"); exit(1); } -- 2.51.0.869.ge66316f041-goog

2 days, 19 hours

1
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[PATCH v20 00/28] riscv control-flow integrity for usermode

by Deepak Gupta

Basics and overview =================== Software with larger attack surfaces (e.g. network facing apps like databases, browsers or apps relying on browser runtimes) suffer from memory corruption issues which can be utilized by attackers to bend control flow of the program to eventually gain control (by making their payload executable). Attackers are able to perform such attacks by leveraging call-sites which rely on indirect calls or return sites which rely on obtaining return address from stack memory. To mitigate such attacks, risc-v extension zicfilp enforces that all indirect calls must land on a landing pad instruction `lpad` else cpu will raise software check exception (a new cpu exception cause code on riscv). Similarly for return flow, risc-v extension zicfiss extends architecture with - `sspush` instruction to push return address on a shadow stack - `sspopchk` instruction to pop return address from shadow stack and compare with input operand (i.e. return address on stack) - `sspopchk` to raise software check exception if comparision above was a mismatch - Protection mechanism using which shadow stack is not writeable via regular store instructions More information an details can be found at extensions github repo [1]. Equivalent to landing pad (zicfilp) on x86 is `ENDBRANCH` instruction in Intel CET [3] and branch target identification (BTI) [4] on arm. Similarly x86's Intel CET has shadow stack [5] and arm64 has guarded control stack (GCS) [6] which are very similar to risc-v's zicfiss shadow stack. x86 and arm64 support for user mode shadow stack is already in mainline. Kernel awareness for user control flow integrity ================================================ This series picks up Samuel Holland's envcfg changes [2] as well. So if those are being applied independently, they should be removed from this series. Enabling: In order to maintain compatibility and not break anything in user mode, kernel doesn't enable control flow integrity cpu extensions on binary by default. Instead exposes a prctl interface to enable, disable and lock the shadow stack or landing pad feature for a task. This allows userspace (loader) to enumerate if all objects in its address space are compiled with shadow stack and landing pad support and accordingly enable the feature. Additionally if a subsequent `dlopen` happens on a library, user mode can take a decision again to disable the feature (if incoming library is not compiled with support) OR terminate the task (if user mode policy is strict to have all objects in address space to be compiled with control flow integirty cpu feature). prctl to enable shadow stack results in allocating shadow stack from virtual memory and activating for user address space. x86 and arm64 are also following same direction due to similar reason(s). clone/fork: On clone and fork, cfi state for task is inherited by child. Shadow stack is part of virtual memory and is a writeable memory from kernel perspective (writeable via a restricted set of instructions aka shadow stack instructions) Thus kernel changes ensure that this memory is converted into read-only when fork/clone happens and COWed when fault is taken due to sspush, sspopchk or ssamoswap. In case `CLONE_VM` is specified and shadow stack is to be enabled, kernel will automatically allocate a shadow stack for that clone call. map_shadow_stack: x86 introduced `map_shadow_stack` system call to allow user space to explicitly map shadow stack memory in its address space. It is useful to allocate shadow for different contexts managed by a single thread (green threads or contexts) risc-v implements this system call as well. signal management: If shadow stack is enabled for a task, kernel performs an asynchronous control flow diversion to deliver the signal and eventually expects userspace to issue sigreturn so that original execution can be resumed. Even though resume context is prepared by kernel, it is in user space memory and is subject to memory corruption and corruption bugs can be utilized by attacker in this race window to perform arbitrary sigreturn and eventually bypass cfi mechanism. Another issue is how to ensure that cfi related state on sigcontext area is not trampled by legacy apps or apps compiled with old kernel headers. In order to mitigate control-flow hijacting, kernel prepares a token and place it on shadow stack before signal delivery and places address of token in sigcontext structure. During sigreturn, kernel obtains address of token from sigcontext struture, reads token from shadow stack and validates it and only then allow sigreturn to succeed. Compatiblity issue is solved by adopting dynamic sigcontext management introduced for vector extension. This series re-factor the code little bit to allow future sigcontext management easy (as proposed by Andy Chiu from SiFive) config and compilation: Introduce a new risc-v config option `CONFIG_RISCV_USER_CFI`. Selecting this config option picks the kernel support for user control flow integrity. This optin is presented only if toolchain has shadow stack and landing pad support. And is on purpose guarded by toolchain support. Reason being that eventually vDSO also needs to be compiled in with shadow stack and landing pad support. vDSO compile patches are not included as of now because landing pad labeling scheme is yet to settle for usermode runtime. To get more information on kernel interactions with respect to zicfilp and zicfiss, patch series adds documentation for `zicfilp` and `zicfiss` in following: Documentation/arch/riscv/zicfiss.rst Documentation/arch/riscv/zicfilp.rst How to test this series ======================= Toolchain --------- $ git clone git@github.com:sifive/riscv-gnu-toolchain.git -b cfi-dev $ riscv-gnu-toolchain/configure --prefix=<path-to-where-to-build> --with-arch=rv64gc_zicfilp_zicfiss --enable-linux --disable-gdb --with-extra-multilib-test="rv64gc_zicfilp_zicfiss-lp64d:-static" $ make -j$(nproc) Qemu ---- Get the lastest qemu $ cd qemu $ mkdir build $ cd build $ ../configure --target-list=riscv64-softmmu $ make -j$(nproc) Opensbi ------- $ git clone git@github.com:deepak0414/opensbi.git -b v6_cfi_spec_split_opensbi $ make CROSS_COMPILE=<your riscv toolchain> -j$(nproc) PLATFORM=generic Linux ----- Running defconfig is fine. CFI is enabled by default if the toolchain supports it. $ make ARCH=riscv CROSS_COMPILE=<path-to-cfi-riscv-gnu-toolchain>/build/bin/riscv64-unknown-linux-gnu- -j$(nproc) defconfig $ make ARCH=riscv CROSS_COMPILE=<path-to-cfi-riscv-gnu-toolchain>/build/bin/riscv64-unknown-linux-gnu- -j$(nproc) Running ------- Modify your qemu command to have: -bios <path-to-cfi-opensbi>/build/platform/generic/firmware/fw_dynamic.bin -cpu rv64,zicfilp=true,zicfiss=true,zimop=true,zcmop=true References ========== [1] - https://github.com/riscv/riscv-cfi [2] - https://lore.kernel.org/all/20240814081126.956287-1-samuel.holland@sifive.c… [3] - https://lwn.net/Articles/889475/ [4] - https://developer.arm.com/documentation/109576/0100/Branch-Target-Identific… [5] - https://www.intel.com/content/dam/develop/external/us/en/documents/catc17-i… [6] - https://lwn.net/Articles/940403/ To: Thomas Gleixner <tglx(a)linutronix.de> To: Ingo Molnar <mingo(a)redhat.com> To: Borislav Petkov <bp(a)alien8.de> To: Dave Hansen <dave.hansen(a)linux.intel.com> To: x86(a)kernel.org To: H. Peter Anvin <hpa(a)zytor.com> To: Andrew Morton <akpm(a)linux-foundation.org> To: Liam R. Howlett <Liam.Howlett(a)oracle.com> To: Vlastimil Babka <vbabka(a)suse.cz> To: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> To: Paul Walmsley <paul.walmsley(a)sifive.com> To: Palmer Dabbelt <palmer(a)dabbelt.com> To: Albert Ou <aou(a)eecs.berkeley.edu> To: Conor Dooley <conor(a)kernel.org> To: Rob Herring <robh(a)kernel.org> To: Krzysztof Kozlowski <krzk+dt(a)kernel.org> To: Arnd Bergmann <arnd(a)arndb.de> To: Christian Brauner <brauner(a)kernel.org> To: Peter Zijlstra <peterz(a)infradead.org> To: Oleg Nesterov <oleg(a)redhat.com> To: Eric Biederman <ebiederm(a)xmission.com> To: Kees Cook <kees(a)kernel.org> To: Jonathan Corbet <corbet(a)lwn.net> To: Shuah Khan <shuah(a)kernel.org> To: Jann Horn <jannh(a)google.com> To: Conor Dooley <conor+dt(a)kernel.org> To: Miguel Ojeda <ojeda(a)kernel.org> To: Alex Gaynor <alex.gaynor(a)gmail.com> To: Boqun Feng <boqun.feng(a)gmail.com> To: Gary Guo <gary(a)garyguo.net> To: Björn Roy Baron <bjorn3_gh(a)protonmail.com> To: Benno Lossin <benno.lossin(a)proton.me> To: Andreas Hindborg <a.hindborg(a)kernel.org> To: Alice Ryhl <aliceryhl(a)google.com> To: Trevor Gross <tmgross(a)umich.edu> Cc: linux-kernel(a)vger.kernel.org Cc: linux-fsdevel(a)vger.kernel.org Cc: linux-mm(a)kvack.org Cc: linux-riscv(a)lists.infradead.org Cc: devicetree(a)vger.kernel.org Cc: linux-arch(a)vger.kernel.org Cc: linux-doc(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Cc: alistair.francis(a)wdc.com Cc: richard.henderson(a)linaro.org Cc: jim.shu(a)sifive.com Cc: andybnac(a)gmail.com Cc: kito.cheng(a)sifive.com Cc: charlie(a)rivosinc.com Cc: atishp(a)rivosinc.com Cc: evan(a)rivosinc.com Cc: cleger(a)rivosinc.com Cc: alexghiti(a)rivosinc.com Cc: samitolvanen(a)google.com Cc: broonie(a)kernel.org Cc: rick.p.edgecombe(a)intel.com Cc: rust-for-linux(a)vger.kernel.org changelog --------- v20: - rebased on v6.18-rc1. - Added two vDSO support. If `CONFIG_RISCV_USER_CFI` is selected two vDSOs are compiled (one for hardware prior to RVA23 and one for RVA23 onwards). Kernel exposes RVA23 vDSO if hardware/cpu implements zimop else exposes existing vDSO to userspace. - default selection for `CONFIG_RISCV_USER_CFI` is "Yes". - replaced "__ASSEMBLY__" with "__ASSEMBLER__" v19: - riscv_nousercfi was `int`. changed it to unsigned long. Thanks to Alex Ghiti for reporting it. It was a bug. - ELP is cleared on trap entry only when CONFIG_64BIT. - restore ssp back on return to usermode was being done before `riscv_v_context_nesting_end` on trap exit path. If kernel shadow stack were enabled this would result in kernel operating on user shadow stack and panic (as I found in my testing of kcfi patch series). So fixed that. v18: - rebased on 6.16-rc1 - uprobe handling clears ELP in sstatus image in pt_regs - vdso was missing shadow stack elf note for object files. added that. Additional asm file for vdso needed the elf marker flag. toolchain should complain if `-fcf-protection=full` and marker is missing for object generated from asm file. Asked toolchain folks to fix this. Although no reason to gate the merge on that. - Split up compile options for march and fcf-protection in vdso Makefile - CONFIG_RISCV_USER_CFI option is moved under "Kernel features" menu Added `arch/riscv/configs/hardening.config` fragment which selects CONFIG_RISCV_USER_CFI v17: - fixed warnings due to empty macros in usercfi.h (reported by alexg) - fixed prefixes in commit titles reported by alexg - took below uprobe with fcfi v2 patch from Zong Li and squashed it with "riscv/traps: Introduce software check exception and uprobe handling" https://lore.kernel.org/all/20250604093403.10916-1-zong.li@sifive.com/ v16: - If FWFT is not implemented or returns error for shadow stack activation, then no_usercfi is set to disable shadow stack. Although this should be picked up by extension validation and activation. Fixed this bug for zicfilp and zicfiss both. Thanks to Charlie Jenkins for reporting this. - If toolchain doesn't support cfi, cfi kselftest shouldn't build. Suggested by Charlie Jenkins. - Default for CONFIG_RISCV_USER_CFI is set to no. Charlie/Atish suggested to keep it off till we have more hardware availibility with RVA23 profile and zimop/zcmop implemented. Else this will start breaking people's workflow - Includes the fix if "!RV64 and !SBI" then definitions for FWFT in asm-offsets.c error. v15: - Toolchain has been updated to include `-fcf-protection` flag. This exists for x86 as well. Updated kernel patches to compile vDSO and selftest to compile with `fcf-protection=full` flag. - selecting CONFIG_RISCV_USERCFI selects CONFIG_RISCV_SBI. - Patch to enable shadow stack for kernel wasn't hidden behind CONFIG_RISCV_USERCFI and CONFIG_RISCV_SBI. fixed that. v14: - rebased on top of palmer/sbi-v3. Thus dropped clement's FWFT patches Updated RISCV_ISA_EXT_XXXX in hwcap and hwprobe constants. - Took Radim's suggestions on bitfields. - Placed cfi_state at the end of thread_info block so that current situation is not disturbed with respect to member fields of thread_info in single cacheline. v13: - cpu_supports_shadow_stack/cpu_supports_indirect_br_lp_instr uses riscv_has_extension_unlikely() - uses nops(count) to create nop slide - RISCV_ACQUIRE_BARRIER is not needed in `amo_user_shstk`. Removed it - changed ternaries to simply use implicit casting to convert to bool. - kernel command line allows to disable zicfilp and zicfiss independently. updated kernel-parameters.txt. - ptrace user abi for cfi uses bitmasks instead of bitfields. Added ptrace kselftest. - cosmetic and grammatical changes to documentation. v12: - It seems like I had accidently squashed arch agnostic indirect branch tracking prctl and riscv implementation of those prctls. Split them again. - set_shstk_status/set_indir_lp_status perform CSR writes only when CPU support is available. As suggested by Zong Li. - Some minor clean up in kselftests as suggested by Zong Li. v11: - patch "arch/riscv: compile vdso with landing pad" was unconditionally selecting `_zicfilp` for vDSO compile. fixed that. Changed `lpad 1` to to `lpad 0`. v10: - dropped "mm: helper `is_shadow_stack_vma` to check shadow stack vma". This patch is not that interesting to this patch series for risc-v. There are instances in arch directories where VM_SHADOW_STACK flag is anyways used. Dropping this patch to expedite merging in riscv tree. - Took suggestions from `Clement` on "riscv: zicfiss / zicfilp enumeration" to validate presence of cfi based on config. - Added a patch for vDSO to have `lpad 0`. I had omitted this earlier to make sure we add single vdso object with cfi enabled. But a vdso object with scheme of zero labeled landing pad is least common denominator and should work with all objects of zero labeled as well as function-signature labeled objects. v9: - rebased on master (39a803b754d5 fix braino in "9p: fix ->rename_sem exclusion") - dropped "mm: Introduce ARCH_HAS_USER_SHADOW_STACK" (master has it from arm64/gcs) - dropped "prctl: arch-agnostic prctl for shadow stack" (master has it from arm64/gcs) v8: - rebased on palmer/for-next - dropped samuel holland's `envcfg` context switch patches. they are in parlmer/for-next v7: - Removed "riscv/Kconfig: enable HAVE_EXIT_THREAD for riscv" Instead using `deactivate_mm` flow to clean up. see here for more context https://lore.kernel.org/all/20230908203655.543765-1-rick.p.edgecombe@intel.… - Changed the header include in `kselftest`. Hopefully this fixes compile issue faced by Zong Li at SiFive. - Cleaned up an orphaned change to `mm/mmap.c` in below patch "riscv/mm : ensure PROT_WRITE leads to VM_READ | VM_WRITE" - Lock interfaces for shadow stack and indirect branch tracking expect arg == 0 Any future evolution of this interface should accordingly define how arg should be setup. - `mm/map.c` has an instance of using `VM_SHADOW_STACK`. Fixed it to use helper `is_shadow_stack_vma`. - Link to v6: https://lore.kernel.org/r/20241008-v5_user_cfi_series-v6-0-60d9fe073f37@riv… v6: - Picked up Samuel Holland's changes as is with `envcfg` placed in `thread` instead of `thread_info` - fixed unaligned newline escapes in kselftest - cleaned up messages in kselftest and included test output in commit message - fixed a bug in clone path reported by Zong Li - fixed a build issue if CONFIG_RISCV_ISA_V is not selected (this was introduced due to re-factoring signal context management code) v5: - rebased on v6.12-rc1 - Fixed schema related issues in device tree file - Fixed some of the documentation related issues in zicfilp/ss.rst (style issues and added index) - added `SHADOW_STACK_SET_MARKER` so that implementation can define base of shadow stack. - Fixed warnings on definitions added in usercfi.h when CONFIG_RISCV_USER_CFI is not selected. - Adopted context header based signal handling as proposed by Andy Chiu - Added support for enabling kernel mode access to shadow stack using FWFT (https://github.com/riscv-non-isa/riscv-sbi-doc/blob/master/src/ext-firmware…) - Link to v5: https://lore.kernel.org/r/20241001-v5_user_cfi_series-v1-0-3ba65b6e550f@riv… (Note: I had an issue in my workflow due to which version number wasn't picked up correctly while sending out patches) v4: - rebased on 6.11-rc6 - envcfg: Converged with Samuel Holland's patches for envcfg management on per- thread basis. - vma_is_shadow_stack is renamed to is_vma_shadow_stack - picked up Mark Brown's `ARCH_HAS_USER_SHADOW_STACK` patch - signal context: using extended context management to maintain compatibility. - fixed `-Wmissing-prototypes` compiler warnings for prctl functions - Documentation fixes and amending typos. - Link to v4: https://lore.kernel.org/all/20240912231650.3740732-1-debug@rivosinc.com/ v3: - envcfg logic to pick up base envcfg had a bug where `ENVCFG_CBZE` could have been picked on per task basis, even though CPU didn't implement it. Fixed in this series. - dt-bindings As suggested, split into separate commit. fixed the messaging that spec is in public review - arch_is_shadow_stack change arch_is_shadow_stack changed to vma_is_shadow_stack - hwprobe zicfiss / zicfilp if present will get enumerated in hwprobe - selftests As suggested, added object and binary filenames to .gitignore Selftest binary anyways need to be compiled with cfi enabled compiler which will make sure that landing pad and shadow stack are enabled. Thus removed separate enable/disable tests. Cleaned up tests a bit. - Link to v3: https://lore.kernel.org/lkml/20240403234054.2020347-1-debug@rivosinc.com/ v2: - Using config `CONFIG_RISCV_USER_CFI`, kernel support for riscv control flow integrity for user mode programs can be compiled in the kernel. - Enabling of control flow integrity for user programs is left to user runtime - This patch series introduces arch agnostic `prctls` to enable shadow stack and indirect branch tracking. And implements them on riscv. --- Changes in v20: - Link to v19: https://lore.kernel.org/r/20250731-v5_user_cfi_series-v19-0-09b468d7beab@ri… Changes in v19: - Link to v18: https://lore.kernel.org/r/20250711-v5_user_cfi_series-v18-0-a8ee62f9f38e@ri… Changes in v18: - Link to v17: https://lore.kernel.org/r/20250604-v5_user_cfi_series-v17-0-4565c2cf869f@ri… Changes in v17: - Link to v16: https://lore.kernel.org/r/20250522-v5_user_cfi_series-v16-0-64f61a35eee7@ri… Changes in v16: - Link to v15: https://lore.kernel.org/r/20250502-v5_user_cfi_series-v15-0-914966471885@ri… Changes in v15: - changelog posted just below cover letter - Link to v14: https://lore.kernel.org/r/20250429-v5_user_cfi_series-v14-0-5239410d012a@ri… Changes in v14: - changelog posted just below cover letter - Link to v13: https://lore.kernel.org/r/20250424-v5_user_cfi_series-v13-0-971437de586a@ri… Changes in v13: - changelog posted just below cover letter - Link to v12: https://lore.kernel.org/r/20250314-v5_user_cfi_series-v12-0-e51202b53138@ri… Changes in v12: - changelog posted just below cover letter - Link to v11: https://lore.kernel.org/r/20250310-v5_user_cfi_series-v11-0-86b36cbfb910@ri… Changes in v11: - changelog posted just below cover letter - Link to v10: https://lore.kernel.org/r/20250210-v5_user_cfi_series-v10-0-163dcfa31c60@ri… --- Andy Chiu (1): riscv: signal: abstract header saving for setup_sigcontext Deepak Gupta (26): mm: VM_SHADOW_STACK definition for riscv dt-bindings: riscv: zicfilp and zicfiss in dt-bindings (extensions.yaml) riscv: zicfiss / zicfilp enumeration riscv: zicfiss / zicfilp extension csr and bit definitions riscv: usercfi state for task and save/restore of CSR_SSP on trap entry/exit riscv/mm : ensure PROT_WRITE leads to VM_READ | VM_WRITE riscv/mm: manufacture shadow stack pte riscv/mm: teach pte_mkwrite to manufacture shadow stack PTEs riscv/mm: write protect and shadow stack riscv/mm: Implement map_shadow_stack() syscall riscv/shstk: If needed allocate a new shadow stack on clone riscv: Implements arch agnostic shadow stack prctls prctl: arch-agnostic prctl for indirect branch tracking riscv: Implements arch agnostic indirect branch tracking prctls riscv/traps: Introduce software check exception and uprobe handling riscv/signal: save and restore of shadow stack for signal riscv/kernel: update __show_regs to print shadow stack register riscv/ptrace: riscv cfi status and state via ptrace and in core files riscv/hwprobe: zicfilp / zicfiss enumeration in hwprobe riscv: kernel command line option to opt out of user cfi riscv: enable kernel access to shadow stack memory via FWFT sbi call arch/riscv: dual vdso creation logic and select vdso based on hw riscv: create a config for shadow stack and landing pad instr support riscv: Documentation for landing pad / indirect branch tracking riscv: Documentation for shadow stack on riscv kselftest/riscv: kselftest for user mode cfi Jim Shu (1): arch/riscv: compile vdso with landing pad and shadow stack note Documentation/admin-guide/kernel-parameters.txt | 8 + Documentation/arch/riscv/index.rst | 2 + Documentation/arch/riscv/zicfilp.rst | 115 +++++ Documentation/arch/riscv/zicfiss.rst | 179 +++++++ .../devicetree/bindings/riscv/extensions.yaml | 14 + arch/riscv/Kconfig | 21 + arch/riscv/Makefile | 8 +- arch/riscv/configs/hardening.config | 4 + arch/riscv/include/asm/asm-prototypes.h | 1 + arch/riscv/include/asm/assembler.h | 44 ++ arch/riscv/include/asm/cpufeature.h | 12 + arch/riscv/include/asm/csr.h | 16 + arch/riscv/include/asm/entry-common.h | 2 + arch/riscv/include/asm/hwcap.h | 2 + arch/riscv/include/asm/mman.h | 26 + arch/riscv/include/asm/mmu_context.h | 7 + arch/riscv/include/asm/pgtable.h | 30 +- arch/riscv/include/asm/processor.h | 1 + arch/riscv/include/asm/thread_info.h | 3 + arch/riscv/include/asm/usercfi.h | 95 ++++ arch/riscv/include/asm/vdso.h | 7 +- arch/riscv/include/asm/vector.h | 3 + arch/riscv/include/uapi/asm/hwprobe.h | 2 + arch/riscv/include/uapi/asm/ptrace.h | 34 ++ arch/riscv/include/uapi/asm/sigcontext.h | 1 + arch/riscv/kernel/Makefile | 2 + arch/riscv/kernel/asm-offsets.c | 10 + arch/riscv/kernel/cpufeature.c | 27 + arch/riscv/kernel/entry.S | 38 ++ arch/riscv/kernel/head.S | 27 + arch/riscv/kernel/process.c | 27 +- arch/riscv/kernel/ptrace.c | 95 ++++ arch/riscv/kernel/signal.c | 148 +++++- arch/riscv/kernel/sys_hwprobe.c | 2 + arch/riscv/kernel/sys_riscv.c | 10 + arch/riscv/kernel/traps.c | 54 ++ arch/riscv/kernel/usercfi.c | 545 +++++++++++++++++++++ arch/riscv/kernel/vdso.c | 7 + arch/riscv/kernel/vdso/Makefile | 40 +- arch/riscv/kernel/vdso/flush_icache.S | 4 + arch/riscv/kernel/vdso/gen_vdso_offsets.sh | 4 +- arch/riscv/kernel/vdso/getcpu.S | 4 + arch/riscv/kernel/vdso/note.S | 3 + arch/riscv/kernel/vdso/rt_sigreturn.S | 4 + arch/riscv/kernel/vdso/sys_hwprobe.S | 4 + arch/riscv/kernel/vdso/vgetrandom-chacha.S | 5 +- arch/riscv/kernel/vdso_cfi/Makefile | 25 + arch/riscv/kernel/vdso_cfi/vdso-cfi.S | 11 + arch/riscv/mm/init.c | 2 +- arch/riscv/mm/pgtable.c | 16 + include/linux/cpu.h | 4 + include/linux/mm.h | 7 + include/uapi/linux/elf.h | 2 + include/uapi/linux/prctl.h | 27 + kernel/sys.c | 30 ++ tools/testing/selftests/riscv/Makefile | 2 +- tools/testing/selftests/riscv/cfi/.gitignore | 3 + tools/testing/selftests/riscv/cfi/Makefile | 16 + tools/testing/selftests/riscv/cfi/cfi_rv_test.h | 82 ++++ tools/testing/selftests/riscv/cfi/riscv_cfi_test.c | 173 +++++++ tools/testing/selftests/riscv/cfi/shadowstack.c | 385 +++++++++++++++ tools/testing/selftests/riscv/cfi/shadowstack.h | 27 + 62 files changed, 2468 insertions(+), 41 deletions(-) --- base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 change-id: 20240930-v5_user_cfi_series-3dc332f8f5b2 -- - 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[PATCH v21 00/28] riscv control-flow integrity for usermode

by Deepak Gupta

v21: fixed build errors. Basics and overview =================== Software with larger attack surfaces (e.g. network facing apps like databases, browsers or apps relying on browser runtimes) suffer from memory corruption issues which can be utilized by attackers to bend control flow of the program to eventually gain control (by making their payload executable). Attackers are able to perform such attacks by leveraging call-sites which rely on indirect calls or return sites which rely on obtaining return address from stack memory. To mitigate such attacks, risc-v extension zicfilp enforces that all indirect calls must land on a landing pad instruction `lpad` else cpu will raise software check exception (a new cpu exception cause code on riscv). Similarly for return flow, risc-v extension zicfiss extends architecture with - `sspush` instruction to push return address on a shadow stack - `sspopchk` instruction to pop return address from shadow stack and compare with input operand (i.e. return address on stack) - `sspopchk` to raise software check exception if comparision above was a mismatch - Protection mechanism using which shadow stack is not writeable via regular store instructions More information an details can be found at extensions github repo [1]. Equivalent to landing pad (zicfilp) on x86 is `ENDBRANCH` instruction in Intel CET [3] and branch target identification (BTI) [4] on arm. Similarly x86's Intel CET has shadow stack [5] and arm64 has guarded control stack (GCS) [6] which are very similar to risc-v's zicfiss shadow stack. x86 and arm64 support for user mode shadow stack is already in mainline. Kernel awareness for user control flow integrity ================================================ This series picks up Samuel Holland's envcfg changes [2] as well. So if those are being applied independently, they should be removed from this series. Enabling: In order to maintain compatibility and not break anything in user mode, kernel doesn't enable control flow integrity cpu extensions on binary by default. Instead exposes a prctl interface to enable, disable and lock the shadow stack or landing pad feature for a task. This allows userspace (loader) to enumerate if all objects in its address space are compiled with shadow stack and landing pad support and accordingly enable the feature. Additionally if a subsequent `dlopen` happens on a library, user mode can take a decision again to disable the feature (if incoming library is not compiled with support) OR terminate the task (if user mode policy is strict to have all objects in address space to be compiled with control flow integirty cpu feature). prctl to enable shadow stack results in allocating shadow stack from virtual memory and activating for user address space. x86 and arm64 are also following same direction due to similar reason(s). clone/fork: On clone and fork, cfi state for task is inherited by child. Shadow stack is part of virtual memory and is a writeable memory from kernel perspective (writeable via a restricted set of instructions aka shadow stack instructions) Thus kernel changes ensure that this memory is converted into read-only when fork/clone happens and COWed when fault is taken due to sspush, sspopchk or ssamoswap. In case `CLONE_VM` is specified and shadow stack is to be enabled, kernel will automatically allocate a shadow stack for that clone call. map_shadow_stack: x86 introduced `map_shadow_stack` system call to allow user space to explicitly map shadow stack memory in its address space. It is useful to allocate shadow for different contexts managed by a single thread (green threads or contexts) risc-v implements this system call as well. signal management: If shadow stack is enabled for a task, kernel performs an asynchronous control flow diversion to deliver the signal and eventually expects userspace to issue sigreturn so that original execution can be resumed. Even though resume context is prepared by kernel, it is in user space memory and is subject to memory corruption and corruption bugs can be utilized by attacker in this race window to perform arbitrary sigreturn and eventually bypass cfi mechanism. Another issue is how to ensure that cfi related state on sigcontext area is not trampled by legacy apps or apps compiled with old kernel headers. In order to mitigate control-flow hijacting, kernel prepares a token and place it on shadow stack before signal delivery and places address of token in sigcontext structure. During sigreturn, kernel obtains address of token from sigcontext struture, reads token from shadow stack and validates it and only then allow sigreturn to succeed. Compatiblity issue is solved by adopting dynamic sigcontext management introduced for vector extension. This series re-factor the code little bit to allow future sigcontext management easy (as proposed by Andy Chiu from SiFive) config and compilation: Introduce a new risc-v config option `CONFIG_RISCV_USER_CFI`. Selecting this config option picks the kernel support for user control flow integrity. This optin is presented only if toolchain has shadow stack and landing pad support. And is on purpose guarded by toolchain support. Reason being that eventually vDSO also needs to be compiled in with shadow stack and landing pad support. vDSO compile patches are not included as of now because landing pad labeling scheme is yet to settle for usermode runtime. To get more information on kernel interactions with respect to zicfilp and zicfiss, patch series adds documentation for `zicfilp` and `zicfiss` in following: Documentation/arch/riscv/zicfiss.rst Documentation/arch/riscv/zicfilp.rst How to test this series ======================= Toolchain --------- $ git clone git@github.com:sifive/riscv-gnu-toolchain.git -b cfi-dev $ riscv-gnu-toolchain/configure --prefix=<path-to-where-to-build> --with-arch=rv64gc_zicfilp_zicfiss --enable-linux --disable-gdb --with-extra-multilib-test="rv64gc_zicfilp_zicfiss-lp64d:-static" $ make -j$(nproc) Qemu ---- Get the lastest qemu $ cd qemu $ mkdir build $ cd build $ ../configure --target-list=riscv64-softmmu $ make -j$(nproc) Opensbi ------- $ git clone git@github.com:deepak0414/opensbi.git -b v6_cfi_spec_split_opensbi $ make CROSS_COMPILE=<your riscv toolchain> -j$(nproc) PLATFORM=generic Linux ----- Running defconfig is fine. CFI is enabled by default if the toolchain supports it. $ make ARCH=riscv CROSS_COMPILE=<path-to-cfi-riscv-gnu-toolchain>/build/bin/riscv64-unknown-linux-gnu- -j$(nproc) defconfig $ make ARCH=riscv CROSS_COMPILE=<path-to-cfi-riscv-gnu-toolchain>/build/bin/riscv64-unknown-linux-gnu- -j$(nproc) Running ------- Modify your qemu command to have: -bios <path-to-cfi-opensbi>/build/platform/generic/firmware/fw_dynamic.bin -cpu rv64,zicfilp=true,zicfiss=true,zimop=true,zcmop=true References ========== [1] - https://github.com/riscv/riscv-cfi [2] - https://lore.kernel.org/all/20240814081126.956287-1-samuel.holland@sifive.c… [3] - https://lwn.net/Articles/889475/ [4] - https://developer.arm.com/documentation/109576/0100/Branch-Target-Identific… [5] - https://www.intel.com/content/dam/develop/external/us/en/documents/catc17-i… [6] - https://lwn.net/Articles/940403/ To: Thomas Gleixner <tglx(a)linutronix.de> To: Ingo Molnar <mingo(a)redhat.com> To: Borislav Petkov <bp(a)alien8.de> To: Dave Hansen <dave.hansen(a)linux.intel.com> To: x86(a)kernel.org To: H. Peter Anvin <hpa(a)zytor.com> To: Andrew Morton <akpm(a)linux-foundation.org> To: Liam R. Howlett <Liam.Howlett(a)oracle.com> To: Vlastimil Babka <vbabka(a)suse.cz> To: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> To: Paul Walmsley <paul.walmsley(a)sifive.com> To: Palmer Dabbelt <palmer(a)dabbelt.com> To: Albert Ou <aou(a)eecs.berkeley.edu> To: Conor Dooley <conor(a)kernel.org> To: Rob Herring <robh(a)kernel.org> To: Krzysztof Kozlowski <krzk+dt(a)kernel.org> To: Arnd Bergmann <arnd(a)arndb.de> To: Christian Brauner <brauner(a)kernel.org> To: Peter Zijlstra <peterz(a)infradead.org> To: Oleg Nesterov <oleg(a)redhat.com> To: Eric Biederman <ebiederm(a)xmission.com> To: Kees Cook <kees(a)kernel.org> To: Jonathan Corbet <corbet(a)lwn.net> To: Shuah Khan <shuah(a)kernel.org> To: Jann Horn <jannh(a)google.com> To: Conor Dooley <conor+dt(a)kernel.org> To: Miguel Ojeda <ojeda(a)kernel.org> To: Alex Gaynor <alex.gaynor(a)gmail.com> To: Boqun Feng <boqun.feng(a)gmail.com> To: Gary Guo <gary(a)garyguo.net> To: Björn Roy Baron <bjorn3_gh(a)protonmail.com> To: Benno Lossin <benno.lossin(a)proton.me> To: Andreas Hindborg <a.hindborg(a)kernel.org> To: Alice Ryhl <aliceryhl(a)google.com> To: Trevor Gross <tmgross(a)umich.edu> Cc: linux-kernel(a)vger.kernel.org Cc: linux-fsdevel(a)vger.kernel.org Cc: linux-mm(a)kvack.org Cc: linux-riscv(a)lists.infradead.org Cc: devicetree(a)vger.kernel.org Cc: linux-arch(a)vger.kernel.org Cc: linux-doc(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Cc: alistair.francis(a)wdc.com Cc: richard.henderson(a)linaro.org Cc: jim.shu(a)sifive.com Cc: andybnac(a)gmail.com Cc: kito.cheng(a)sifive.com Cc: charlie(a)rivosinc.com Cc: atishp(a)rivosinc.com Cc: evan(a)rivosinc.com Cc: cleger(a)rivosinc.com Cc: alexghiti(a)rivosinc.com Cc: samitolvanen(a)google.com Cc: broonie(a)kernel.org Cc: rick.p.edgecombe(a)intel.com Cc: rust-for-linux(a)vger.kernel.org changelog --------- v21: - Fixing build errors due to changes in arch/riscv/include/asm/vdso.h Using #ifdef instead of IS_ENABLED in arch/riscv/include/asm/vdso.h vdso-cfi-offsets.h should be included only when CONFIG_RISCV_USER_CFI is selected. v20: - rebased on v6.18-rc1. - Added two vDSO support. If `CONFIG_RISCV_USER_CFI` is selected two vDSOs are compiled (one for hardware prior to RVA23 and one for RVA23 onwards). Kernel exposes RVA23 vDSO if hardware/cpu implements zimop else exposes existing vDSO to userspace. - default selection for `CONFIG_RISCV_USER_CFI` is "Yes". - replaced "__ASSEMBLY__" with "__ASSEMBLER__" v19: - riscv_nousercfi was `int`. changed it to unsigned long. Thanks to Alex Ghiti for reporting it. It was a bug. - ELP is cleared on trap entry only when CONFIG_64BIT. - restore ssp back on return to usermode was being done before `riscv_v_context_nesting_end` on trap exit path. If kernel shadow stack were enabled this would result in kernel operating on user shadow stack and panic (as I found in my testing of kcfi patch series). So fixed that. v18: - rebased on 6.16-rc1 - uprobe handling clears ELP in sstatus image in pt_regs - vdso was missing shadow stack elf note for object files. added that. Additional asm file for vdso needed the elf marker flag. toolchain should complain if `-fcf-protection=full` and marker is missing for object generated from asm file. Asked toolchain folks to fix this. Although no reason to gate the merge on that. - Split up compile options for march and fcf-protection in vdso Makefile - CONFIG_RISCV_USER_CFI option is moved under "Kernel features" menu Added `arch/riscv/configs/hardening.config` fragment which selects CONFIG_RISCV_USER_CFI v17: - fixed warnings due to empty macros in usercfi.h (reported by alexg) - fixed prefixes in commit titles reported by alexg - took below uprobe with fcfi v2 patch from Zong Li and squashed it with "riscv/traps: Introduce software check exception and uprobe handling" https://lore.kernel.org/all/20250604093403.10916-1-zong.li@sifive.com/ v16: - If FWFT is not implemented or returns error for shadow stack activation, then no_usercfi is set to disable shadow stack. Although this should be picked up by extension validation and activation. Fixed this bug for zicfilp and zicfiss both. Thanks to Charlie Jenkins for reporting this. - If toolchain doesn't support cfi, cfi kselftest shouldn't build. Suggested by Charlie Jenkins. - Default for CONFIG_RISCV_USER_CFI is set to no. Charlie/Atish suggested to keep it off till we have more hardware availibility with RVA23 profile and zimop/zcmop implemented. Else this will start breaking people's workflow - Includes the fix if "!RV64 and !SBI" then definitions for FWFT in asm-offsets.c error. v15: - Toolchain has been updated to include `-fcf-protection` flag. This exists for x86 as well. Updated kernel patches to compile vDSO and selftest to compile with `fcf-protection=full` flag. - selecting CONFIG_RISCV_USERCFI selects CONFIG_RISCV_SBI. - Patch to enable shadow stack for kernel wasn't hidden behind CONFIG_RISCV_USERCFI and CONFIG_RISCV_SBI. fixed that. v14: - rebased on top of palmer/sbi-v3. Thus dropped clement's FWFT patches Updated RISCV_ISA_EXT_XXXX in hwcap and hwprobe constants. - Took Radim's suggestions on bitfields. - Placed cfi_state at the end of thread_info block so that current situation is not disturbed with respect to member fields of thread_info in single cacheline. v13: - cpu_supports_shadow_stack/cpu_supports_indirect_br_lp_instr uses riscv_has_extension_unlikely() - uses nops(count) to create nop slide - RISCV_ACQUIRE_BARRIER is not needed in `amo_user_shstk`. Removed it - changed ternaries to simply use implicit casting to convert to bool. - kernel command line allows to disable zicfilp and zicfiss independently. updated kernel-parameters.txt. - ptrace user abi for cfi uses bitmasks instead of bitfields. Added ptrace kselftest. - cosmetic and grammatical changes to documentation. v12: - It seems like I had accidently squashed arch agnostic indirect branch tracking prctl and riscv implementation of those prctls. Split them again. - set_shstk_status/set_indir_lp_status perform CSR writes only when CPU support is available. As suggested by Zong Li. - Some minor clean up in kselftests as suggested by Zong Li. v11: - patch "arch/riscv: compile vdso with landing pad" was unconditionally selecting `_zicfilp` for vDSO compile. fixed that. Changed `lpad 1` to to `lpad 0`. v10: - dropped "mm: helper `is_shadow_stack_vma` to check shadow stack vma". This patch is not that interesting to this patch series for risc-v. There are instances in arch directories where VM_SHADOW_STACK flag is anyways used. Dropping this patch to expedite merging in riscv tree. - Took suggestions from `Clement` on "riscv: zicfiss / zicfilp enumeration" to validate presence of cfi based on config. - Added a patch for vDSO to have `lpad 0`. I had omitted this earlier to make sure we add single vdso object with cfi enabled. But a vdso object with scheme of zero labeled landing pad is least common denominator and should work with all objects of zero labeled as well as function-signature labeled objects. v9: - rebased on master (39a803b754d5 fix braino in "9p: fix ->rename_sem exclusion") - dropped "mm: Introduce ARCH_HAS_USER_SHADOW_STACK" (master has it from arm64/gcs) - dropped "prctl: arch-agnostic prctl for shadow stack" (master has it from arm64/gcs) v8: - rebased on palmer/for-next - dropped samuel holland's `envcfg` context switch patches. they are in parlmer/for-next v7: - Removed "riscv/Kconfig: enable HAVE_EXIT_THREAD for riscv" Instead using `deactivate_mm` flow to clean up. see here for more context https://lore.kernel.org/all/20230908203655.543765-1-rick.p.edgecombe@intel.… - Changed the header include in `kselftest`. Hopefully this fixes compile issue faced by Zong Li at SiFive. - Cleaned up an orphaned change to `mm/mmap.c` in below patch "riscv/mm : ensure PROT_WRITE leads to VM_READ | VM_WRITE" - Lock interfaces for shadow stack and indirect branch tracking expect arg == 0 Any future evolution of this interface should accordingly define how arg should be setup. - `mm/map.c` has an instance of using `VM_SHADOW_STACK`. Fixed it to use helper `is_shadow_stack_vma`. - Link to v6: https://lore.kernel.org/r/20241008-v5_user_cfi_series-v6-0-60d9fe073f37@riv… v6: - Picked up Samuel Holland's changes as is with `envcfg` placed in `thread` instead of `thread_info` - fixed unaligned newline escapes in kselftest - cleaned up messages in kselftest and included test output in commit message - fixed a bug in clone path reported by Zong Li - fixed a build issue if CONFIG_RISCV_ISA_V is not selected (this was introduced due to re-factoring signal context management code) v5: - rebased on v6.12-rc1 - Fixed schema related issues in device tree file - Fixed some of the documentation related issues in zicfilp/ss.rst (style issues and added index) - added `SHADOW_STACK_SET_MARKER` so that implementation can define base of shadow stack. - Fixed warnings on definitions added in usercfi.h when CONFIG_RISCV_USER_CFI is not selected. - Adopted context header based signal handling as proposed by Andy Chiu - Added support for enabling kernel mode access to shadow stack using FWFT (https://github.com/riscv-non-isa/riscv-sbi-doc/blob/master/src/ext-firmware…) - Link to v5: https://lore.kernel.org/r/20241001-v5_user_cfi_series-v1-0-3ba65b6e550f@riv… (Note: I had an issue in my workflow due to which version number wasn't picked up correctly while sending out patches) v4: - rebased on 6.11-rc6 - envcfg: Converged with Samuel Holland's patches for envcfg management on per- thread basis. - vma_is_shadow_stack is renamed to is_vma_shadow_stack - picked up Mark Brown's `ARCH_HAS_USER_SHADOW_STACK` patch - signal context: using extended context management to maintain compatibility. - fixed `-Wmissing-prototypes` compiler warnings for prctl functions - Documentation fixes and amending typos. - Link to v4: https://lore.kernel.org/all/20240912231650.3740732-1-debug@rivosinc.com/ v3: - envcfg logic to pick up base envcfg had a bug where `ENVCFG_CBZE` could have been picked on per task basis, even though CPU didn't implement it. Fixed in this series. - dt-bindings As suggested, split into separate commit. fixed the messaging that spec is in public review - arch_is_shadow_stack change arch_is_shadow_stack changed to vma_is_shadow_stack - hwprobe zicfiss / zicfilp if present will get enumerated in hwprobe - selftests As suggested, added object and binary filenames to .gitignore Selftest binary anyways need to be compiled with cfi enabled compiler which will make sure that landing pad and shadow stack are enabled. Thus removed separate enable/disable tests. Cleaned up tests a bit. - Link to v3: https://lore.kernel.org/lkml/20240403234054.2020347-1-debug@rivosinc.com/ v2: - Using config `CONFIG_RISCV_USER_CFI`, kernel support for riscv control flow integrity for user mode programs can be compiled in the kernel. - Enabling of control flow integrity for user programs is left to user runtime - This patch series introduces arch agnostic `prctls` to enable shadow stack and indirect branch tracking. And implements them on riscv. --- Changes in v21: - Link to v20: https://lore.kernel.org/r/20251013-v5_user_cfi_series-v20-0-b9de4be9912e@ri… Changes in v20: - Link to v19: https://lore.kernel.org/r/20250731-v5_user_cfi_series-v19-0-09b468d7beab@ri… Changes in v19: - Link to v18: https://lore.kernel.org/r/20250711-v5_user_cfi_series-v18-0-a8ee62f9f38e@ri… Changes in v18: - Link to v17: https://lore.kernel.org/r/20250604-v5_user_cfi_series-v17-0-4565c2cf869f@ri… Changes in v17: - Link to v16: https://lore.kernel.org/r/20250522-v5_user_cfi_series-v16-0-64f61a35eee7@ri… Changes in v16: - Link to v15: https://lore.kernel.org/r/20250502-v5_user_cfi_series-v15-0-914966471885@ri… Changes in v15: - changelog posted just below cover letter - Link to v14: https://lore.kernel.org/r/20250429-v5_user_cfi_series-v14-0-5239410d012a@ri… Changes in v14: - changelog posted just below cover letter - Link to v13: https://lore.kernel.org/r/20250424-v5_user_cfi_series-v13-0-971437de586a@ri… Changes in v13: - changelog posted just below cover letter - Link to v12: https://lore.kernel.org/r/20250314-v5_user_cfi_series-v12-0-e51202b53138@ri… Changes in v12: - changelog posted just below cover letter - Link to v11: https://lore.kernel.org/r/20250310-v5_user_cfi_series-v11-0-86b36cbfb910@ri… Changes in v11: - changelog posted just below cover letter - Link to v10: https://lore.kernel.org/r/20250210-v5_user_cfi_series-v10-0-163dcfa31c60@ri… --- Andy Chiu (1): riscv: signal: abstract header saving for setup_sigcontext Deepak Gupta (26): mm: VM_SHADOW_STACK definition for riscv dt-bindings: riscv: zicfilp and zicfiss in dt-bindings (extensions.yaml) riscv: zicfiss / zicfilp enumeration riscv: zicfiss / zicfilp extension csr and bit definitions riscv: usercfi state for task and save/restore of CSR_SSP on trap entry/exit riscv/mm : ensure PROT_WRITE leads to VM_READ | VM_WRITE riscv/mm: manufacture shadow stack pte riscv/mm: teach pte_mkwrite to manufacture shadow stack PTEs riscv/mm: write protect and shadow stack riscv/mm: Implement map_shadow_stack() syscall riscv/shstk: If needed allocate a new shadow stack on clone riscv: Implements arch agnostic shadow stack prctls prctl: arch-agnostic prctl for indirect branch tracking riscv: Implements arch agnostic indirect branch tracking prctls riscv/traps: Introduce software check exception and uprobe handling riscv/signal: save and restore of shadow stack for signal riscv/kernel: update __show_regs to print shadow stack register riscv/ptrace: riscv cfi status and state via ptrace and in core files riscv/hwprobe: zicfilp / zicfiss enumeration in hwprobe riscv: kernel command line option to opt out of user cfi riscv: enable kernel access to shadow stack memory via FWFT sbi call arch/riscv: dual vdso creation logic and select vdso based on hw riscv: create a config for shadow stack and landing pad instr support riscv: Documentation for landing pad / indirect branch tracking riscv: Documentation for shadow stack on riscv kselftest/riscv: kselftest for user mode cfi Jim Shu (1): arch/riscv: compile vdso with landing pad and shadow stack note Documentation/admin-guide/kernel-parameters.txt | 8 + Documentation/arch/riscv/index.rst | 2 + Documentation/arch/riscv/zicfilp.rst | 115 +++++ Documentation/arch/riscv/zicfiss.rst | 179 +++++++ .../devicetree/bindings/riscv/extensions.yaml | 14 + arch/riscv/Kconfig | 21 + arch/riscv/Makefile | 8 +- arch/riscv/configs/hardening.config | 4 + arch/riscv/include/asm/asm-prototypes.h | 1 + arch/riscv/include/asm/assembler.h | 44 ++ arch/riscv/include/asm/cpufeature.h | 12 + arch/riscv/include/asm/csr.h | 16 + arch/riscv/include/asm/entry-common.h | 2 + arch/riscv/include/asm/hwcap.h | 2 + arch/riscv/include/asm/mman.h | 26 + arch/riscv/include/asm/mmu_context.h | 7 + arch/riscv/include/asm/pgtable.h | 30 +- arch/riscv/include/asm/processor.h | 1 + arch/riscv/include/asm/thread_info.h | 3 + arch/riscv/include/asm/usercfi.h | 95 ++++ arch/riscv/include/asm/vdso.h | 13 +- arch/riscv/include/asm/vector.h | 3 + arch/riscv/include/uapi/asm/hwprobe.h | 2 + arch/riscv/include/uapi/asm/ptrace.h | 34 ++ arch/riscv/include/uapi/asm/sigcontext.h | 1 + arch/riscv/kernel/Makefile | 2 + arch/riscv/kernel/asm-offsets.c | 10 + arch/riscv/kernel/cpufeature.c | 27 + arch/riscv/kernel/entry.S | 38 ++ arch/riscv/kernel/head.S | 27 + arch/riscv/kernel/process.c | 27 +- arch/riscv/kernel/ptrace.c | 95 ++++ arch/riscv/kernel/signal.c | 148 +++++- arch/riscv/kernel/sys_hwprobe.c | 2 + arch/riscv/kernel/sys_riscv.c | 10 + arch/riscv/kernel/traps.c | 54 ++ arch/riscv/kernel/usercfi.c | 545 +++++++++++++++++++++ arch/riscv/kernel/vdso.c | 7 + arch/riscv/kernel/vdso/Makefile | 40 +- arch/riscv/kernel/vdso/flush_icache.S | 4 + arch/riscv/kernel/vdso/gen_vdso_offsets.sh | 4 +- arch/riscv/kernel/vdso/getcpu.S | 4 + arch/riscv/kernel/vdso/note.S | 3 + arch/riscv/kernel/vdso/rt_sigreturn.S | 4 + arch/riscv/kernel/vdso/sys_hwprobe.S | 4 + arch/riscv/kernel/vdso/vgetrandom-chacha.S | 5 +- arch/riscv/kernel/vdso_cfi/Makefile | 25 + arch/riscv/kernel/vdso_cfi/vdso-cfi.S | 11 + arch/riscv/mm/init.c | 2 +- arch/riscv/mm/pgtable.c | 16 + include/linux/cpu.h | 4 + include/linux/mm.h | 7 + include/uapi/linux/elf.h | 2 + include/uapi/linux/prctl.h | 27 + kernel/sys.c | 30 ++ tools/testing/selftests/riscv/Makefile | 2 +- tools/testing/selftests/riscv/cfi/.gitignore | 3 + tools/testing/selftests/riscv/cfi/Makefile | 16 + tools/testing/selftests/riscv/cfi/cfi_rv_test.h | 82 ++++ tools/testing/selftests/riscv/cfi/riscv_cfi_test.c | 173 +++++++ tools/testing/selftests/riscv/cfi/shadowstack.c | 385 +++++++++++++++ tools/testing/selftests/riscv/cfi/shadowstack.h | 27 + 62 files changed, 2474 insertions(+), 41 deletions(-) --- base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 change-id: 20240930-v5_user_cfi_series-3dc332f8f5b2 -- - debug

2 days, 19 hours

2
30
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[PATCH rc] iommufd/selftest: Fix ioctl return value in _test_cmd_trigger_vevents()

by Nicolin Chen

The ioctl returns 0 upon success, so !0 returning -1 breaks the selftest. Drop the '!' to fix it. Fixes: 1d235d849425 ("iommu/selftest: prevent use of uninitialized variable") Signed-off-by: Nicolin Chen <nicolinc(a)nvidia.com> --- tools/testing/selftests/iommu/iommufd_utils.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 772ca1db6e597..9f472c20c1905 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -1044,8 +1044,8 @@ static int _test_cmd_trigger_vevents(int fd, __u32 dev_id, __u32 nvevents) }; while (nvevents--) { - if (!ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_TRIGGER_VEVENT), - &trigger_vevent_cmd)) + if (ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_TRIGGER_VEVENT), + &trigger_vevent_cmd)) return -1; } return 0; -- 2.43.0

2 days, 19 hours

3
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[PATCH kvm-next V11 0/7] Add NUMA mempolicy support for KVM guest-memfd

by Shivank Garg

This series introduces NUMA-aware memory placement support for KVM guests with guest_memfd memory backends. It builds upon Fuad Tabba's work (V17) that enabled host-mapping for guest_memfd memory [1] and can be applied directly applied on KVM tree [2] (branch kvm-next, base commit: a6ad5413, Merge branch 'guest-memfd-mmap' into HEAD) == Background == KVM's guest-memfd memory backend currently lacks support for NUMA policy enforcement, causing guest memory allocations to be distributed across host nodes according to kernel's default behavior, irrespective of any policy specified by the VMM. This limitation arises because conventional userspace NUMA control mechanisms like mbind(2) don't work since the memory isn't directly mapped to userspace when allocations occur. Fuad's work [1] provides the necessary mmap capability, and this series leverages it to enable mbind(2). == Implementation == This series implements proper NUMA policy support for guest-memfd by: 1. Adding mempolicy-aware allocation APIs to the filemap layer. 2. Introducing custom inodes (via a dedicated slab-allocated inode cache, kvm_gmem_inode_info) to store NUMA policy and metadata for guest memory. 3. Implementing get/set_policy vm_ops in guest_memfd to support NUMA policy. With these changes, VMMs can now control guest memory placement by mapping guest_memfd file descriptor and using mbind(2) to specify: - Policy modes: default, bind, interleave, or preferred - Host NUMA nodes: List of target nodes for memory allocation These Policies affect only future allocations and do not migrate existing memory. This matches mbind(2)'s default behavior which affects only new allocations unless overridden with MPOL_MF_MOVE/MPOL_MF_MOVE_ALL flags (Not supported for guest_memfd as it is unmovable by design). == Upstream Plan == Phased approach as per David's guest_memfd extension overview [3] and community calls [4]: Phase 1 (this series): 1. Focuses on shared guest_memfd support (non-CoCo VMs). 2. Builds on Fuad's host-mapping work [1]. Phase2 (future work): 1. NUMA support for private guest_memfd (CoCo VMs). 2. Depends on SNP in-place conversion support [5]. This series provides a clean integration path for NUMA-aware memory management for guest_memfd and lays the groundwork for future confidential computing NUMA capabilities. Thanks, Shivank == Changelog == - v1,v2: Extended the KVM_CREATE_GUEST_MEMFD IOCTL to pass mempolicy. - v3: Introduced fbind() syscall for VMM memory-placement configuration. - v4-v6: Current approach using shared_policy support and vm_ops (based on suggestions from David [6] and guest_memfd bi-weekly upstream call discussion [7]). - v7: Use inodes to store NUMA policy instead of file [8]. - v8: Rebase on top of Fuad's V12: Host mmaping for guest_memfd memory. - v9: Rebase on top of Fuad's V13 and incorporate review comments - V10: Rebase on top of Fuad's V17. Use latest guest_memfd inode patch from Ackerley (with David's review comments). Use newer kmem_cache_create() API variant with arg parameter (Vlastimil) - V11: Rebase on kvm-next, remove RFC tag, use Ackerley's latest patch and fix a rcu race bug during kvm module unload. [1] https://lore.kernel.org/all/20250729225455.670324-1-seanjc@google.com [2] https://git.kernel.org/pub/scm/virt/kvm/kvm.git/log/?h=next [3] https://lore.kernel.org/all/c1c9591d-218a-495c-957b-ba356c8f8e09@redhat.com [4] https://docs.google.com/document/d/1M6766BzdY1Lhk7LiR5IqVR8B8mG3cr-cxTxOrAo… [5] https://lore.kernel.org/all/20250613005400.3694904-1-michael.roth@amd.com [6] https://lore.kernel.org/all/6fbef654-36e2-4be5-906e-2a648a845278@redhat.com [7] https://lore.kernel.org/all/2b77e055-98ac-43a1-a7ad-9f9065d7f38f@amd.com [8] https://lore.kernel.org/all/diqzbjumm167.fsf@ackerleytng-ctop.c.googlers.com Ackerley Tng (1): KVM: guest_memfd: Use guest mem inodes instead of anonymous inodes Matthew Wilcox (Oracle) (2): mm/filemap: Add NUMA mempolicy support to filemap_alloc_folio() mm/filemap: Extend __filemap_get_folio() to support NUMA memory policies Shivank Garg (4): mm/mempolicy: Export memory policy symbols KVM: guest_memfd: Add slab-allocated inode cache KVM: guest_memfd: Enforce NUMA mempolicy using shared policy KVM: guest_memfd: selftests: Add tests for mmap and NUMA policy support fs/bcachefs/fs-io-buffered.c | 2 +- fs/btrfs/compression.c | 4 +- fs/btrfs/verity.c | 2 +- fs/erofs/zdata.c | 2 +- fs/f2fs/compress.c | 2 +- include/linux/pagemap.h | 18 +- include/uapi/linux/magic.h | 1 + mm/filemap.c | 23 +- mm/mempolicy.c | 6 + mm/readahead.c | 2 +- tools/testing/selftests/kvm/Makefile.kvm | 1 + .../testing/selftests/kvm/guest_memfd_test.c | 121 ++++++++ virt/kvm/guest_memfd.c | 262 ++++++++++++++++-- virt/kvm/kvm_main.c | 7 +- virt/kvm/kvm_mm.h | 9 +- 15 files changed, 412 insertions(+), 50 deletions(-) -- 2.43.0 --- == Earlier Postings == v10: https://lore.kernel.org/all/20250811090605.16057-2-shivankg@amd.com v9: https://lore.kernel.org/all/20250713174339.13981-2-shivankg@amd.com v8: https://lore.kernel.org/all/20250618112935.7629-1-shivankg@amd.com v7: https://lore.kernel.org/all/20250408112402.181574-1-shivankg@amd.com v6: https://lore.kernel.org/all/20250226082549.6034-1-shivankg@amd.com v5: https://lore.kernel.org/all/20250219101559.414878-1-shivankg@amd.com v4: https://lore.kernel.org/all/20250210063227.41125-1-shivankg@amd.com v3: https://lore.kernel.org/all/20241105164549.154700-1-shivankg@amd.com v2: https://lore.kernel.org/all/20240919094438.10987-1-shivankg@amd.com v1: https://lore.kernel.org/all/20240916165743.201087-1-shivankg@amd.com

2 days, 21 hours

9
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[PATCH v2 0/4] KVM ARM64 pre_fault_memory

by Jack Thomson

From: Jack Thomson <jackabt(a)amazon.com> This patch series adds ARM64 support for the KVM_PRE_FAULT_MEMORY feature, which was previously only available on x86 [1]. This allows us to reduce the number of stage-2 faults during execution. This is of benefit in post-copy migration scenarios, particularly in memory intensive applications, where we are experiencing high latencies due to the stage-2 faults. Patch Overview: - The first patch adds support for the KVM_PRE_FAULT_MEMORY ioctl on arm64. - The second patch fixes an issue with unaligned mmap allocations in the selftests. - The third patch updates the pre_fault_memory_test to support arm64. - The last patch extends the pre_fault_memory_test to cover different vm memory backings. === Changes Since v1 [2] === Addressing feedback from Oliver: - No pre-fault flag is passed to user_mem_abort() or gmem_abort() now aborts are synthesized. - Remove retry loop from kvm_arch_vcpu_pre_fault_memory() [1]: https://lore.kernel.org/kvm/20240710174031.312055-1-pbonzini@redhat.com [2]: https://lore.kernel.org/all/20250911134648.58945-1-jackabt.amazon@gmail.com Jack Thomson (4): KVM: arm64: Add pre_fault_memory implementation KVM: selftests: Fix unaligned mmap allocations KVM: selftests: Enable pre_fault_memory_test for arm64 KVM: selftests: Add option for different backing in pre-fault tests Documentation/virt/kvm/api.rst | 3 +- arch/arm64/kvm/Kconfig | 1 + arch/arm64/kvm/arm.c | 1 + arch/arm64/kvm/mmu.c | 73 +++++++++++- tools/testing/selftests/kvm/Makefile.kvm | 1 + tools/testing/selftests/kvm/lib/kvm_util.c | 12 +- .../selftests/kvm/pre_fault_memory_test.c | 110 +++++++++++++----- 7 files changed, 163 insertions(+), 38 deletions(-) base-commit: 42188667be387867d2bf763d028654cbad046f7b -- 2.43.0

2 days, 21 hours

2
5
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[PATCH v2 00/19] rust: replace `kernel::c_str!` with C-Strings

by Tamir Duberstein

This series depends on step 3[0]. Subsystem maintainers: I would appreciate your `Acked-by`s so that this can be taken through Miguel's tree (where the previous series must go). Link: https://lore.kernel.org/all/20250925-cstr-core-v16-0-5cdcb3470ec2@gmail.com/ [0] Signed-off-by: Tamir Duberstein <tamird(a)gmail.com> --- Changes in v2: - Rebase. - Add two patches to address new code. - Drop incorrectly applied Acked-by tags from Danilo. - Link to v1: https://lore.kernel.org/r/20250710-core-cstr-cstrings-v1-0-027420ea799e@gma… --- Tamir Duberstein (19): drivers: net: replace `kernel::c_str!` with C-Strings gpu: nova-core: replace `kernel::c_str!` with C-Strings rust: auxiliary: replace `kernel::c_str!` with C-Strings rust: clk: replace `kernel::c_str!` with C-Strings rust: configfs: replace `kernel::c_str!` with C-Strings rust: cpufreq: replace `kernel::c_str!` with C-Strings rust: device: replace `kernel::c_str!` with C-Strings rust: firmware: replace `kernel::c_str!` with C-Strings rust: kunit: replace `kernel::c_str!` with C-Strings rust: macros: replace `kernel::c_str!` with C-Strings rust: miscdevice: replace `kernel::c_str!` with C-Strings rust: net: replace `kernel::c_str!` with C-Strings rust: pci: replace `kernel::c_str!` with C-Strings rust: platform: replace `kernel::c_str!` with C-Strings rust: seq_file: replace `kernel::c_str!` with C-Strings rust: str: replace `kernel::c_str!` with C-Strings rust: sync: replace `kernel::c_str!` with C-Strings rust: io: replace `kernel::c_str!` with C-Strings rust: regulator: replace `kernel::c_str!` with C-Strings drivers/block/rnull.rs | 2 +- drivers/cpufreq/rcpufreq_dt.rs | 5 ++--- drivers/gpu/drm/nova/driver.rs | 10 +++++----- drivers/gpu/nova-core/driver.rs | 6 +++--- drivers/net/phy/ax88796b_rust.rs | 7 +++---- drivers/net/phy/qt2025.rs | 5 ++--- rust/kernel/clk.rs | 6 ++---- rust/kernel/configfs.rs | 9 +++++---- rust/kernel/cpufreq.rs | 3 +-- rust/kernel/device.rs | 4 +--- rust/kernel/device/property.rs | 6 +++--- rust/kernel/firmware.rs | 6 +++--- rust/kernel/io/mem.rs | 7 +++---- rust/kernel/kunit.rs | 11 ++++------- rust/kernel/net/phy.rs | 6 ++---- rust/kernel/platform.rs | 6 +++--- rust/kernel/regulator.rs | 9 +++------ rust/kernel/seq_file.rs | 4 ++-- rust/kernel/str.rs | 5 ++--- rust/kernel/sync.rs | 5 ++--- rust/kernel/sync/completion.rs | 2 +- rust/kernel/workqueue.rs | 8 ++++---- rust/macros/kunit.rs | 10 +++++----- rust/macros/module.rs | 2 +- samples/rust/rust_configfs.rs | 5 ++--- samples/rust/rust_driver_auxiliary.rs | 4 ++-- samples/rust/rust_driver_faux.rs | 4 ++-- samples/rust/rust_driver_pci.rs | 4 ++-- samples/rust/rust_driver_platform.rs | 30 ++++++++++++++---------------- samples/rust/rust_misc_device.rs | 3 +-- scripts/rustdoc_test_gen.rs | 4 ++-- 31 files changed, 88 insertions(+), 110 deletions(-) --- base-commit: f3f6b3664302e16ef1c6b91034a72df5564d6b8a change-id: 20250710-core-cstr-cstrings-1faaa632f0fd prerequisite-change-id: 20250201-cstr-core-d4b9b69120cf:v16 prerequisite-patch-id: e0ca756f740ab0ce7478bbf6510948ba89529a2f prerequisite-patch-id: 6d8dbdf864f79fc0c2820e702a7cb87753649ca0 prerequisite-patch-id: 7d4d1d036043a85dcbaf0d09ea85768120efe094 Best regards, -- Tamir Duberstein <tamird(a)gmail.com>

3 days

7
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[PATCH v6 00/15] Consolidate iommu page table implementations (AMD)

by Jason Gunthorpe

[All the precursor patches are merged now and AMD/RISCV/VTD conversions are written] Currently each of the iommu page table formats duplicates all of the logic to maintain the page table and perform map/unmap/etc operations. There are several different versions of the algorithms between all the different formats. The io-pgtable system provides an interface to help isolate the page table code from the iommu driver, but doesn't provide tools to implement the common algorithms. This makes it very hard to improve the state of the pagetable code under the iommu domains as any proposed improvement needs to alter a large number of different driver code paths. Combined with a lack of software based testing this makes improvement in this area very hard. iommufd wants several new page table operations: - More efficient map/unmap operations, using iommufd's batching logic - unmap that returns the physical addresses into a batch as it progresses - cut that allows splitting areas so large pages can have holes poked in them dynamically (ie guestmemfd hitless shared/private transitions) - More agressive freeing of table memory to avoid waste - Fragmenting large pages so that dirty tracking can be more granular - Reassembling large pages so that VMs can run at full IO performance in migration/dirty tracking error flows - KHO integration for kernel live upgrade Together these are algorithmically complex enough to be a very significant task to go and implement in all the page table formats we support. Just the "server" focused drivers use almost all the formats (ARMv8 S1&S2 / x86 PAE / AMDv1 / VT-D SS / RISCV) Instead of doing the duplicated work, this series takes the first step to consolidate the algorithms into one places. In spirit it is similar to the work Christoph did a few years back to pull the redundant get_user_pages() implementations out of the arch code into core MM. This unlocked a great deal of improvement in that space in the following years. I would like to see the same benefit in iommu as well. My first RFC showed a bigger picture with all most all formats and more algorithms. This series reorganizes that to be narrowly focused on just enough to convert the AMD driver to use the new mechanism. kunit tests are provided that allow good testing of the algorithms and all formats on x86, nothing is arch specific. AMD is one of the simpler options as the HW is quite uniform with few different options/bugs while still requiring the complicated contiguous pages support. The HW also has a very simple range based invalidation approach that is easy to implement. The AMD v1 and AMD v2 page table formats are implemented bit for bit identical to the current code, tested using a compare kunit test that checks against the io-pgtable version (on github, see below). Updating the AMD driver to replace the io-pgtable layer with the new stuff is fairly straightforward now. The layering is fixed up in the new version so that all the invalidation goes through function pointers. Several small fixing patches have come out of this as I've been fixing the problems that the test suite uncovers in the current code, and implementing the fixed version in iommupt. On performance, there is a quite wide variety of implementation designs across all the drivers. Looking at some key performance across the main formats: iommu_map(): pgsz ,avg new,old ns, min new,old ns , min % (+ve is better) 2^12, 53,66 , 51,63 , 19.19 (AMDV1) 256*2^12, 386,1909 , 367,1795 , 79.79 256*2^21, 362,1633 , 355,1556 , 77.77 2^12, 56,62 , 52,59 , 11.11 (AMDv2) 256*2^12, 405,1355 , 357,1292 , 72.72 256*2^21, 393,1160 , 358,1114 , 67.67 2^12, 55,65 , 53,62 , 14.14 (VTD second stage) 256*2^12, 391,518 , 332,512 , 35.35 256*2^21, 383,635 , 336,624 , 46.46 2^12, 57,65 , 55,63 , 12.12 (ARM 64 bit) 256*2^12, 380,389 , 361,369 , 2.02 256*2^21, 358,419 , 345,400 , 13.13 iommu_unmap(): pgsz ,avg new,old ns, min new,old ns , min % (+ve is better) 2^12, 69,88 , 65,85 , 23.23 (AMDv1) 256*2^12, 353,6498 , 331,6029 , 94.94 256*2^21, 373,6014 , 360,5706 , 93.93 2^12, 71,72 , 66,69 , 4.04 (AMDv2) 256*2^12, 228,891 , 206,871 , 76.76 256*2^21, 254,721 , 245,711 , 65.65 2^12, 69,87 , 65,82 , 20.20 (VTD second stage) 256*2^12, 210,321 , 200,315 , 36.36 256*2^21, 255,349 , 238,342 , 30.30 2^12, 72,77 , 68,74 , 8.08 (ARM 64 bit) 256*2^12, 521,357 , 447,346 , -29.29 256*2^21, 489,358 , 433,345 , -25.25 * Above numbers include additional patches to remove the iommu_pgsize() overheads. gcc 13.3.0, i7-12700 This version provides fairly consistent performance across formats. ARM unmap performance is quite different because this version supports contiguous pages and uses a very different algorithm for unmapping. Though why it is so worse compared to AMDv1 I haven't figured out yet. The per-format commits include a more detailed chart. There is a second branch: https://github.com/jgunthorpe/linux/commits/iommu_pt_all Containing supporting work and future steps: - ARM short descriptor (32 bit), ARM long descriptor (64 bit) formats - RISCV format and RISCV conversion https://github.com/jgunthorpe/linux/commits/iommu_pt_riscv - Support for a DMA incoherent HW page table walker - VT-D second stage format and VT-D conversion https://github.com/jgunthorpe/linux/commits/iommu_pt_vtd - DART v1 & v2 format - Draft of a iommufd 'cut' operation to break down huge pages - A compare test that checks the iommupt formats against the iopgtable interface, including updating AMD to have a working iopgtable and patches to make VT-D have an iopgtable for testing. - A performance test to micro-benchmark map and unmap against iogptable My strategy is to go one by one for the drivers: - AMD driver conversion - RISCV page table and driver - Intel VT-D driver and VTDSS page table - Flushing improvements for RISCV - ARM SMMUv3 And concurrently work on the algorithm side: - debugfs content dump, like VT-D has - Cut support - Increase/Decrease page size support - map/unmap batching - KHO As we make more algorithm improvements the value to convert the drivers increases. This is on github: https://github.com/jgunthorpe/linux/commits/iommu_pt v6: - Improve comments and documentation - Rename pt_entry_oa_full -> pt_entry_oa_exact pt_has_system_page -> pt_has_system_page_size pt_max_output_address_lg2 -> pt_max_oa_lg2 log2_f*() -> vaf* / oaf* / f*_t pt_item_fully_covered -> pt_entry_fully_covered - Fix missed constant propogation causing division - Consolidate debugging checks to pt_check_install_leaf_args() - Change collect->ignore_mapped to check_mapped - Shuffle some hunks around to more appropriate patches - Two new mini kunit tests v5: https://patch.msgid.link/r/0-v5-116c4948af3d+68091-iommu_pt_jgg@nvidia.com - Text grammar updates and kdoc fixes v4: https://patch.msgid.link/r/0-v4-0d6a6726a372+18959-iommu_pt_jgg@nvidia.com - Rebase on v6.16-rc3 - Integrate the HATS/HATDis changes - Remove 'default n' from kconfig - Remove unused 'PT_FIXED_TOP_LEVEL' - Improve comments and documentation - Fix some compile warnings from kbuild robots v3: https://patch.msgid.link/r/0-v3-a93aab628dbc+521-iommu_pt_jgg@nvidia.com - Rebase on v6.16-rc2 - s/PT_ENTRY_WORD_SIZE/PT_ITEM_WORD_SIZE/s to follow the language better - Comment and documentation updates - Add PT_TOP_PHYS_MASK to help manage alignment restrictions on the top pointer - Add missed force_aperture = true - Make pt_iommu_deinit() take care of the not-yet-inited error case internally as AMD/RISCV/VTD all shared this logic - Change gather_range() into gather_range_pages() so it also deals with the page list. This makes the following cache flushing series simpler - Fix missed update of unmap->unmapped in some error cases - Change clear_contig() to order the gather more logically - Remove goto from the error handling in __map_range_leaf() - s/log2_/oalog2_/ in places where the argument is an oaddr_t - Pass the pts to pt_table_install64/32() - Do not use SIGN_EXTEND for the AMDv2 page table because of Vasant's information on how PASID 0 works. v2: https://patch.msgid.link/r/0-v2-5c26bde5c22d+58b-iommu_pt_jgg@nvidia.com - AMD driver only, many code changes RFC: https://lore.kernel.org/all/0-v1-01fa10580981+1d-iommu_pt_jgg@nvidia.com/ Cc: Michael Roth <michael.roth(a)amd.com> Cc: Alexey Kardashevskiy <aik(a)amd.com> Cc: Pasha Tatashin <pasha.tatashin(a)soleen.com> Cc: James Gowans <jgowans(a)amazon.com> Signed-off-by: Jason Gunthorpe <jgg(a)nvidia.com> Alejandro Jimenez (1): iommu/amd: Use the generic iommu page table Jason Gunthorpe (14): genpt: Generic Page Table base API genpt: Add Documentation/ files iommupt: Add the basic structure of the iommu implementation iommupt: Add the AMD IOMMU v1 page table format iommupt: Add iova_to_phys op iommupt: Add unmap_pages op iommupt: Add map_pages op iommupt: Add read_and_clear_dirty op iommupt: Add a kunit test for Generic Page Table iommupt: Add a mock pagetable format for iommufd selftest to use iommufd: Change the selftest to use iommupt instead of xarray iommupt: Add the x86 64 bit page table format iommu/amd: Remove AMD io_pgtable support iommupt: Add a kunit test for the IOMMU implementation .clang-format | 1 + Documentation/driver-api/generic_pt.rst | 142 ++ Documentation/driver-api/index.rst | 1 + drivers/iommu/Kconfig | 2 + drivers/iommu/Makefile | 1 + drivers/iommu/amd/Kconfig | 5 +- drivers/iommu/amd/Makefile | 2 +- drivers/iommu/amd/amd_iommu.h | 1 - drivers/iommu/amd/amd_iommu_types.h | 110 +- drivers/iommu/amd/io_pgtable.c | 577 -------- drivers/iommu/amd/io_pgtable_v2.c | 370 ------ drivers/iommu/amd/iommu.c | 538 ++++---- drivers/iommu/generic_pt/.kunitconfig | 13 + drivers/iommu/generic_pt/Kconfig | 67 + drivers/iommu/generic_pt/fmt/Makefile | 26 + drivers/iommu/generic_pt/fmt/amdv1.h | 408 ++++++ drivers/iommu/generic_pt/fmt/defs_amdv1.h | 21 + drivers/iommu/generic_pt/fmt/defs_x86_64.h | 21 + drivers/iommu/generic_pt/fmt/iommu_amdv1.c | 15 + drivers/iommu/generic_pt/fmt/iommu_mock.c | 10 + drivers/iommu/generic_pt/fmt/iommu_template.h | 48 + drivers/iommu/generic_pt/fmt/iommu_x86_64.c | 11 + drivers/iommu/generic_pt/fmt/x86_64.h | 251 ++++ drivers/iommu/generic_pt/iommu_pt.h | 1157 +++++++++++++++++ drivers/iommu/generic_pt/kunit_generic_pt.h | 713 ++++++++++ drivers/iommu/generic_pt/kunit_iommu.h | 182 +++ drivers/iommu/generic_pt/kunit_iommu_pt.h | 486 +++++++ drivers/iommu/generic_pt/pt_common.h | 358 +++++ drivers/iommu/generic_pt/pt_defs.h | 329 +++++ drivers/iommu/generic_pt/pt_fmt_defaults.h | 233 ++++ drivers/iommu/generic_pt/pt_iter.h | 636 +++++++++ drivers/iommu/generic_pt/pt_log2.h | 122 ++ drivers/iommu/io-pgtable.c | 4 - drivers/iommu/iommufd/Kconfig | 1 + drivers/iommu/iommufd/iommufd_test.h | 11 +- drivers/iommu/iommufd/selftest.c | 438 +++---- include/linux/generic_pt/common.h | 167 +++ include/linux/generic_pt/iommu.h | 270 ++++ include/linux/io-pgtable.h | 2 - tools/testing/selftests/iommu/iommufd.c | 60 +- tools/testing/selftests/iommu/iommufd_utils.h | 12 + 41 files changed, 6212 insertions(+), 1610 deletions(-) create mode 100644 Documentation/driver-api/generic_pt.rst delete mode 100644 drivers/iommu/amd/io_pgtable.c delete mode 100644 drivers/iommu/amd/io_pgtable_v2.c create mode 100644 drivers/iommu/generic_pt/.kunitconfig create mode 100644 drivers/iommu/generic_pt/Kconfig create mode 100644 drivers/iommu/generic_pt/fmt/Makefile create mode 100644 drivers/iommu/generic_pt/fmt/amdv1.h create mode 100644 drivers/iommu/generic_pt/fmt/defs_amdv1.h create mode 100644 drivers/iommu/generic_pt/fmt/defs_x86_64.h create mode 100644 drivers/iommu/generic_pt/fmt/iommu_amdv1.c create mode 100644 drivers/iommu/generic_pt/fmt/iommu_mock.c create mode 100644 drivers/iommu/generic_pt/fmt/iommu_template.h create mode 100644 drivers/iommu/generic_pt/fmt/iommu_x86_64.c create mode 100644 drivers/iommu/generic_pt/fmt/x86_64.h create mode 100644 drivers/iommu/generic_pt/iommu_pt.h create mode 100644 drivers/iommu/generic_pt/kunit_generic_pt.h create mode 100644 drivers/iommu/generic_pt/kunit_iommu.h create mode 100644 drivers/iommu/generic_pt/kunit_iommu_pt.h create mode 100644 drivers/iommu/generic_pt/pt_common.h create mode 100644 drivers/iommu/generic_pt/pt_defs.h create mode 100644 drivers/iommu/generic_pt/pt_fmt_defaults.h create mode 100644 drivers/iommu/generic_pt/pt_iter.h create mode 100644 drivers/iommu/generic_pt/pt_log2.h create mode 100644 include/linux/generic_pt/common.h create mode 100644 include/linux/generic_pt/iommu.h base-commit: cc1d7df505790fe734117b41455f1fe82ebf5ae5 -- 2.43.0

3 days, 4 hours

3
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[PATCH 0/4] KVM: selftests: Add test of SET_NESTED_STATE with 48-bit L2 on 57-bit L1

by Jim Mattson

Prior to commit 9245fd6b8531 ("KVM: x86: model canonical checks more precisely"), KVM_SET_NESTED_STATE would fail if the state was captured with L2 active, L1 had CR4.LA57 set, L2 did not, and the VMCS12.HOST_GSBASE (or other host-state field checked for canonicality) had an address greater than 48 bits wide. Add a regression test that reproduces the KVM_SET_NESTED_STATE failure conditions. To do so, the first three patches add support for 5-level paging in the selftest L1 VM. Jim Mattson (4): KVM: selftests: Use a loop to create guest page tables KVM: selftests: Use a loop to walk guest page tables KVM: selftests: Add VM_MODE_PXXV57_4K VM mode KVM: selftests: Add a VMX test for LA57 nested state tools/testing/selftests/kvm/Makefile.kvm | 1 + .../testing/selftests/kvm/include/kvm_util.h | 1 + tools/testing/selftests/kvm/lib/kvm_util.c | 21 +++ .../testing/selftests/kvm/lib/x86/processor.c | 66 ++++----- tools/testing/selftests/kvm/lib/x86/vmx.c | 7 +- .../kvm/x86/vmx_la57_nested_state_test.c | 137 ++++++++++++++++++ 6 files changed, 195 insertions(+), 38 deletions(-) create mode 100644 tools/testing/selftests/kvm/x86/vmx_la57_nested_state_test.c -- 2.51.0.470.ga7dc726c21-goog

3 days, 10 hours

3
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[PATCH net-next v6 1/2] net/tls: support setting the maximum payload size

by Wilfred Mallawa

From: Wilfred Mallawa <wilfred.mallawa(a)wdc.com> During a handshake, an endpoint may specify a maximum record size limit. Currently, the kernel defaults to TLS_MAX_PAYLOAD_SIZE (16KB) for the maximum record size. Meaning that, the outgoing records from the kernel can exceed a lower size negotiated during the handshake. In such a case, the TLS endpoint must send a fatal "record_overflow" alert [1], and thus the record is discarded. Upcoming Western Digital NVMe-TCP hardware controllers implement TLS support. For these devices, supporting TLS record size negotiation is necessary because the maximum TLS record size supported by the controller is less than the default 16KB currently used by the kernel. Currently, there is no way to inform the kernel of such a limit. This patch adds support to a new setsockopt() option `TLS_TX_MAX_PAYLOAD_LEN` that allows for setting the maximum plaintext fragment size. Once set, outgoing records are no larger than the size specified. This option can be used to specify the record size limit. [1] https://www.rfc-editor.org/rfc/rfc8449 Tested-by: syzbot(a)syzkaller.appspotmail.com Signed-off-by: Wilfred Mallawa <wilfred.mallawa(a)wdc.com> --- Changes V5 -> V6: - Add NULL check for sw_ctx. Reported by syzbot. V5: https://lore.kernel.org/netdev/20251014051825.1084403-2-wilfred.opensource@… --- Documentation/networking/tls.rst | 11 ++++++ include/net/tls.h | 3 ++ include/uapi/linux/tls.h | 2 ++ net/tls/tls_device.c | 2 +- net/tls/tls_main.c | 62 ++++++++++++++++++++++++++++++++ net/tls/tls_sw.c | 2 +- 6 files changed, 80 insertions(+), 2 deletions(-) diff --git a/Documentation/networking/tls.rst b/Documentation/networking/tls.rst index 36cc7afc2527..dabab17ab84a 100644 --- a/Documentation/networking/tls.rst +++ b/Documentation/networking/tls.rst @@ -280,6 +280,17 @@ If the record decrypted turns out to had been padded or is not a data record it will be decrypted again into a kernel buffer without zero copy. Such events are counted in the ``TlsDecryptRetry`` statistic. +TLS_TX_MAX_PAYLOAD_LEN +~~~~~~~~~~~~~~~~~~~~~~ + +Sets the maximum size for the plaintext of a protected record. + +When this option is set, the kernel enforces this limit on all transmitted TLS +records, ensuring no plaintext fragment exceeds the specified size. This can be +used to specify the TLS Record Size Limit [1]. + +[1] https://datatracker.ietf.org/doc/html/rfc8449 + Statistics ========== diff --git a/include/net/tls.h b/include/net/tls.h index 857340338b69..f2af113728aa 100644 --- a/include/net/tls.h +++ b/include/net/tls.h @@ -53,6 +53,8 @@ struct tls_rec; /* Maximum data size carried in a TLS record */ #define TLS_MAX_PAYLOAD_SIZE ((size_t)1 << 14) +/* Minimum record size limit as per RFC8449 */ +#define TLS_MIN_RECORD_SIZE_LIM ((size_t)1 << 6) #define TLS_HEADER_SIZE 5 #define TLS_NONCE_OFFSET TLS_HEADER_SIZE @@ -226,6 +228,7 @@ struct tls_context { u8 rx_conf:3; u8 zerocopy_sendfile:1; u8 rx_no_pad:1; + u16 tx_max_payload_len; int (*push_pending_record)(struct sock *sk, int flags); void (*sk_write_space)(struct sock *sk); diff --git a/include/uapi/linux/tls.h b/include/uapi/linux/tls.h index b66a800389cc..b8b9c42f848c 100644 --- a/include/uapi/linux/tls.h +++ b/include/uapi/linux/tls.h @@ -41,6 +41,7 @@ #define TLS_RX 2 /* Set receive parameters */ #define TLS_TX_ZEROCOPY_RO 3 /* TX zerocopy (only sendfile now) */ #define TLS_RX_EXPECT_NO_PAD 4 /* Attempt opportunistic zero-copy */ +#define TLS_TX_MAX_PAYLOAD_LEN 5 /* Maximum plaintext size */ /* Supported versions */ #define TLS_VERSION_MINOR(ver) ((ver) & 0xFF) @@ -194,6 +195,7 @@ enum { TLS_INFO_RXCONF, TLS_INFO_ZC_RO_TX, TLS_INFO_RX_NO_PAD, + TLS_INFO_TX_MAX_PAYLOAD_LEN, __TLS_INFO_MAX, }; #define TLS_INFO_MAX (__TLS_INFO_MAX - 1) diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index a64ae15b1a60..c6289c73cffc 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -461,7 +461,7 @@ static int tls_push_data(struct sock *sk, /* TLS_HEADER_SIZE is not counted as part of the TLS record, and * we need to leave room for an authentication tag. */ - max_open_record_len = TLS_MAX_PAYLOAD_SIZE + + max_open_record_len = tls_ctx->tx_max_payload_len + prot->prepend_size; do { rc = tls_do_allocation(sk, ctx, pfrag, prot->prepend_size); diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c index a3ccb3135e51..b96c825b90e9 100644 --- a/net/tls/tls_main.c +++ b/net/tls/tls_main.c @@ -544,6 +544,28 @@ static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, return 0; } +static int do_tls_getsockopt_tx_payload_len(struct sock *sk, char __user *optval, + int __user *optlen) +{ + struct tls_context *ctx = tls_get_ctx(sk); + u16 payload_len = ctx->tx_max_payload_len; + int len; + + if (get_user(len, optlen)) + return -EFAULT; + + if (len < sizeof(payload_len)) + return -EINVAL; + + if (put_user(sizeof(payload_len), optlen)) + return -EFAULT; + + if (copy_to_user(optval, &payload_len, sizeof(payload_len))) + return -EFAULT; + + return 0; +} + static int do_tls_getsockopt(struct sock *sk, int optname, char __user *optval, int __user *optlen) { @@ -563,6 +585,9 @@ static int do_tls_getsockopt(struct sock *sk, int optname, case TLS_RX_EXPECT_NO_PAD: rc = do_tls_getsockopt_no_pad(sk, optval, optlen); break; + case TLS_TX_MAX_PAYLOAD_LEN: + rc = do_tls_getsockopt_tx_payload_len(sk, optval, optlen); + break; default: rc = -ENOPROTOOPT; break; @@ -812,6 +837,30 @@ static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, return rc; } +static int do_tls_setsockopt_tx_payload_len(struct sock *sk, sockptr_t optval, + unsigned int optlen) +{ + struct tls_context *ctx = tls_get_ctx(sk); + struct tls_sw_context_tx *sw_ctx = tls_sw_ctx_tx(ctx); + u16 value; + + if (sw_ctx && sw_ctx->open_rec) + return -EBUSY; + + if (sockptr_is_null(optval) || optlen != sizeof(value)) + return -EINVAL; + + if (copy_from_sockptr(&value, optval, sizeof(value))) + return -EFAULT; + + if (value < TLS_MIN_RECORD_SIZE_LIM || value > TLS_MAX_PAYLOAD_SIZE) + return -EINVAL; + + ctx->tx_max_payload_len = value; + + return 0; +} + static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, unsigned int optlen) { @@ -833,6 +882,11 @@ static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, case TLS_RX_EXPECT_NO_PAD: rc = do_tls_setsockopt_no_pad(sk, optval, optlen); break; + case TLS_TX_MAX_PAYLOAD_LEN: + lock_sock(sk); + rc = do_tls_setsockopt_tx_payload_len(sk, optval, optlen); + release_sock(sk); + break; default: rc = -ENOPROTOOPT; break; @@ -1022,6 +1076,7 @@ static int tls_init(struct sock *sk) ctx->tx_conf = TLS_BASE; ctx->rx_conf = TLS_BASE; + ctx->tx_max_payload_len = TLS_MAX_PAYLOAD_SIZE; update_sk_prot(sk, ctx); out: write_unlock_bh(&sk->sk_callback_lock); @@ -1111,6 +1166,12 @@ static int tls_get_info(struct sock *sk, struct sk_buff *skb, bool net_admin) goto nla_failure; } + err = nla_put_u16(skb, TLS_INFO_TX_MAX_PAYLOAD_LEN, + ctx->tx_max_payload_len); + + if (err) + goto nla_failure; + rcu_read_unlock(); nla_nest_end(skb, start); return 0; @@ -1132,6 +1193,7 @@ static size_t tls_get_info_size(const struct sock *sk, bool net_admin) nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ + nla_total_size(sizeof(u16)) + /* TLS_INFO_TX_MAX_PAYLOAD_LEN */ 0; return size; diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index daac9fd4be7e..e76ea38b712a 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -1079,7 +1079,7 @@ static int tls_sw_sendmsg_locked(struct sock *sk, struct msghdr *msg, orig_size = msg_pl->sg.size; full_record = false; try_to_copy = msg_data_left(msg); - record_room = TLS_MAX_PAYLOAD_SIZE - msg_pl->sg.size; + record_room = tls_ctx->tx_max_payload_len - msg_pl->sg.size; if (try_to_copy >= record_room) { try_to_copy = record_room; full_record = true; -- 2.51.0

3 days, 12 hours

2
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[PATCH v2 0/6] riscv: vector: misc ptrace fixes for debug use-cases

by Sergey Matyukevich

This patch series suggests fixes for several corner cases in the RISC-V vector ptrace implementation: - follow gdbserver expectations and return ENODATA instead of EINVAL if vector extension is supported but not yet activated for a traced process - force vector context save on the next context switch after ptrace call that modified vector CSRs, to avoid reading stale values by the next ptrace calls - force vector context save on the first context switch after vector context initialization, to avoid reading zero vlenb by an early attached debugger For detailed description see the appropriate commit messages. A new test is added into the tools/testing/selftests/riscv/vector to verify the fixes. Each fix is accompanied by its own test case. Initial version [1] of this series included only the last fix for zero vlenb. [1] https://lore.kernel.org/linux-riscv/20250821173957.563472-1-geomatsi@gmail.… Ilya Mamay (1): riscv: ptrace: return ENODATA for inactive vector extension Sergey Matyukevich (5): selftests: riscv: test ptrace vector interface selftests: riscv: set invalid vtype using ptrace riscv: vector: allow to force vector context save selftests: riscv: verify initial vector state with ptrace riscv: vector: initialize vlenb on the first context switch arch/riscv/include/asm/thread_info.h | 2 + arch/riscv/include/asm/vector.h | 3 + arch/riscv/kernel/process.c | 2 + arch/riscv/kernel/ptrace.c | 15 +- arch/riscv/kernel/vector.c | 4 + .../testing/selftests/riscv/vector/.gitignore | 1 + tools/testing/selftests/riscv/vector/Makefile | 5 +- .../testing/selftests/riscv/vector/v_ptrace.c | 302 ++++++++++++++++++ 8 files changed, 331 insertions(+), 3 deletions(-) create mode 100644 tools/testing/selftests/riscv/vector/v_ptrace.c base-commit: c746c3b5169831d7fb032a1051d8b45592ae8d78 -- 2.51.0

3 days, 13 hours

2
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[PATCH] KVM: selftests: Don't fall over when only one CPU

by Brendan Jackman

Running this test on a system with only one CPU is not a recipe for success. However, there's no clear-cut reason why it absolutely shouldn't work, so the test shouldn't completely reject such a platform. At present, the *3/4 calculation will return zero on these platforms and the test fails. So, instead just skip that calculation. Suggested-by: Sean Christopherson <seanjc(a)google.com> Signed-off-by: Brendan Jackman <jackmanb(a)google.com> --- tools/testing/selftests/kvm/mmu_stress_test.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/mmu_stress_test.c b/tools/testing/selftests/kvm/mmu_stress_test.c index 6a437d2be9fa444b34c2a73308a9d1c7ff3cc4f5..b5bd6fbad32a9ad5247a52ecf811b29293763e2e 100644 --- a/tools/testing/selftests/kvm/mmu_stress_test.c +++ b/tools/testing/selftests/kvm/mmu_stress_test.c @@ -263,8 +263,10 @@ static void calc_default_nr_vcpus(void) TEST_ASSERT(!r, "sched_getaffinity failed, errno = %d (%s)", errno, strerror(errno)); - nr_vcpus = CPU_COUNT(&possible_mask) * 3/4; + nr_vcpus = CPU_COUNT(&possible_mask); TEST_ASSERT(nr_vcpus > 0, "Uh, no CPUs?"); + if (nr_vcpus >= 2) + nr_vcpus = nr_vcpus * 3/4; } int main(int argc, char *argv[]) --- base-commit: 6b36119b94d0b2bb8cea9d512017efafd461d6ac change-id: 20251007-b4-kvm-mmu-stresstest-1proc-e6157c13787a Best regards, -- Brendan Jackman <jackmanb(a)google.com>

3 days, 17 hours

2
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[PATCH v2 0/3] arm64/sme: Support disabling streaming mode via ptrace on SME only systems

by Mark Brown

Currently it is not possible to disable streaming mode via ptrace on SME only systems, the interface for doing this is to write via NT_ARM_SVE but such writes will be rejected on a system without SVE support. Enable this functionality by allowing userspace to write SVE_PT_REGS_FPSIMD format data via NT_ARM_SVE with the vector length set to 0 on SME only systems. Such writes currently error since we require that a vector length is specified which should minimise the risk that existing software is relying on current behaviour. Reads are not supported since I am not aware of any use case for this and there is some risk that an existing userspace application may be confused if it reads NT_ARM_SVE on a system without SVE. Existing kernels will return FPSIMD formatted register state from NT_ARM_SVE if full SVE state is not stored, for example if the task has not used SVE. Returning a vector length of 0 would create a risk that software could try to do things like allocate space for register state with zero sizes, while returning a vector length of 128 bits would look like SVE is supported. It seems safer to just not make the changes to add read support. It remains possible for userspace to detect a SME only system via the ptrace interface only since reads of NT_ARM_SSVE and NT_ARM_ZA will suceed while reads of NT_ARM_SVE will fail. Read/write access to the FPSIMD registers in non-streaming mode is available via REGSET_FPR. The aim is is to make a minimally invasive change, no operation that would previously have succeeded will be affected, and we use a previously defined interface in new circumstances rather than define completely new ABI. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Changes in v2: - Rebase onto v6.18-rc1 - Link to v1: https://lore.kernel.org/r/20250820-arm64-sme-ptrace-sme-only-v1-0-f7c22b287… --- Mark Brown (3): arm64/sme: Support disabling streaming mode via ptrace on SME only systems kselftst/arm64: Test NT_ARM_SVE FPSIMD format writes on non-SVE systems kselftest/arm64: Cover disabling streaming mode without SVE in fp-ptrace Documentation/arch/arm64/sve.rst | 5 +++ arch/arm64/kernel/ptrace.c | 40 +++++++++++++++--- tools/testing/selftests/arm64/fp/fp-ptrace.c | 5 +-- tools/testing/selftests/arm64/fp/sve-ptrace.c | 61 +++++++++++++++++++++++++++ 4 files changed, 100 insertions(+), 11 deletions(-) --- base-commit: cb6649f6217c0331b885cf787f1d175963e2a1d2 change-id: 20250717-arm64-sme-ptrace-sme-only-1fb850600ea0 Best regards, -- Mark Brown <broonie(a)kernel.org>

3 days, 17 hours

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[PATCH] selftests/futex: add newline to ksft_exit_fail_msg()

by Carlos Llamas

This was missed in commit e5c04d0f3ea0 ("selftests/futex: Refactor futex_wait with kselftest_harness.h") while replacing previous perror() calls, which automatically append the newline character. Fixes: e5c04d0f3ea0 ("selftests/futex: Refactor futex_wait with kselftest_harness.h") Signed-off-by: Carlos Llamas <cmllamas(a)google.com> --- tools/testing/selftests/futex/functional/futex_wait.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/futex/functional/futex_wait.c b/tools/testing/selftests/futex/functional/futex_wait.c index 152ca4612886..4cd87f2a3422 100644 --- a/tools/testing/selftests/futex/functional/futex_wait.c +++ b/tools/testing/selftests/futex/functional/futex_wait.c @@ -108,14 +108,14 @@ TEST(file_backed) /* Testing a file backed shared memory */ fd = open(SHM_PATH, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR); if (fd < 0) - ksft_exit_fail_msg("open"); + ksft_exit_fail_msg("open\n"); if (ftruncate(fd, sizeof(f_private))) - ksft_exit_fail_msg("ftruncate"); + ksft_exit_fail_msg("ftruncate\n"); shm = mmap(NULL, sizeof(f_private), PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); if (shm == MAP_FAILED) - ksft_exit_fail_msg("mmap"); + ksft_exit_fail_msg("mmap\n"); memcpy(shm, &f_private, sizeof(f_private)); -- 2.51.0.869.ge66316f041-goog

3 days, 17 hours

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[PATCH v2 0/7] iommufd: Add MSI mapping support with nested SMMU (Part-2 RMR)

by Nicolin Chen

[ Background ] On ARM GIC systems and others, the target address of the MSI is translated by the IOMMU. For GIC, the MSI address page is called "ITS" page. When the IOMMU is disabled, the MSI address is programmed to the physical location of the GIC ITS page (e.g. 0x20200000). When the IOMMU is enabled, the ITS page is behind the IOMMU, so the MSI address is programmed to an allocated IO virtual address (a.k.a IOVA), e.g. 0xFFFF0000, which must be mapped to the physical ITS page: IOVA (0xFFFF0000) ===> PA (0x20200000). When a 2-stage translation is enabled, IOVA will be still used to program the MSI address, though the mappings will be in two stages: IOVA (0xFFFF0000) ===> IPA (e.g. 0x80900000) ===> PA (0x20200000) (IPA stands for Intermediate Physical Address). If the device that generates MSI is attached to an IOMMU_DOMAIN_DMA, the IOVA is dynamically allocated from the top of the IOVA space. If attached to an IOMMU_DOMAIN_UNMANAGED (e.g. a VFIO passthrough device), the IOVA is fixed to an MSI window reported by the IOMMU driver via IOMMU_RESV_SW_MSI, which is hardwired to MSI_IOVA_BASE (IOVA==0x8000000) for ARM IOMMUs. So far, this IOMMU_RESV_SW_MSI works well as kernel is entirely in charge of the IOMMU translation (1-stage translation), since the IOVA for the ITS page is fixed and known by kernel. However, with virtual machine enabling a nested IOMMU translation (2-stage), a guest kernel directly controls the stage-1 translation with an IOMMU_DOMAIN_DMA, mapping a vITS page (at an IPA 0x80900000) onto its own IOVA space (e.g. 0xEEEE0000). Then, the host kernel can't know that guest-level IOVA to program the MSI address. There have been two approaches to solve this problem: 1. Create an identity mapping in the stage-1. VMM could insert a few RMRs (Reserved Memory Regions) in guest's IORT. Then the guest kernel would fetch these RMR entries from the IORT and create an IOMMU_RESV_DIRECT region per iommu group for a direct mapping. Eventually, the mappings would look like: IOVA (0x8000000) === IPA (0x8000000) ===> 0x20200000 This requires an IOMMUFD ioctl for kernel and VMM to agree on the IPA. 2. Forward the guest-level MSI IOVA captured by VMM to the host-level GIC driver, to program the correct MSI IOVA. Forward the VMM-defined vITS page location (IPA) to the kernel for the stage-2 mapping. Eventually: IOVA (0xFFFF0000) ===> IPA (0x80900000) ===> PA (0x20200000) This requires a VFIO ioctl (for IOVA) and an IOMMUFD ioctl (for IPA). Worth mentioning that when Eric Auger was working on the same topic with the VFIO iommu uAPI, he had the approach (2) first, and then switched to the approach (1), suggested by Jean-Philippe for reduction of complexity. The approach (1) basically feels like the existing VFIO passthrough that has a 1-stage mapping for the unmanaged domain, yet only by shifting the MSI mapping from stage 1 (guest-has-no-iommu case) to stage 2 (guest-has- iommu case). So, it could reuse the existing IOMMU_RESV_SW_MSI piece, by sharing the same idea of "VMM leaving everything to the kernel". The approach (2) is an ideal solution, yet it requires additional effort for kernel to be aware of the 1-stage gIOVA(s) and 2-stage IPAs for vITS page(s), which demands VMM to closely cooperate. * It also brings some complicated use cases to the table where the host or/and guest system(s) has/have multiple ITS pages. [ Execution ] The iommu core rework (part-1) for iommufd_sw_msi is merged. So, now the IOMMU_RESV_SW_MSI can be used as an ABI. VMM can take this hard coded MSI window and create a direct stage-1 mapping using RMR in the guest's IORT. However, a proper uAPI must be defined for kernel and VMM to agree on wrt this virtual MSI window. Moreover, some use cases might want to map the IOVAs in IOMMU_RESV_SW_MSI for something else. This requires kernel to provide an interface to shift the software MSI window to a different region: https://lore.kernel.org/all/20250909154600.910110-1-shyamsaini@linux.micros… This series, as a follow-up series, introduces a pair of iommufd options for user space to configure the software MSI window. [ Future Plan ] Part-3 and beyond will continue the effort of supporting the approach (2) for a complete vITS-to-pITS mapping: 1) Map the phsical ITS page (potentially via IOMMUFD_CMD_IOAS_MAP_MSI) 2) Convey the IOVAs per-irq (potentially via VFIO_IRQ_SET_ACTION_PREPARE) Note that the set_option uAPI in this series might not fit since this requires it is an array of MSI IOVAs.) This series is on github: https://github.com/nicolinc/iommufd/commits/iommufd_msi_p2-v2 Pairing QEMU branch for testing (approach 1): https://github.com/nicolinc/qemu/commits/wip/for_iommufd_msi_p2-v2-rmr Changelog v2 * Rebase on v6.18-rc1 * Update commit logs and kdocs * Add a patch fixing iommufd_device_is_attached() * Add sanity check for overflow and cover it in the selftest v1 (containing part-1 that is now merged) https://lore.kernel.org/all/cover.1739005085.git.nicolinc@nvidia.com/ Thanks! Nicolin Nicolin Chen (7): iommufd/device: Move sw_msi_start from igroup to idev iommufd: Pass in idev to iopt_table_enforce_dev_resv_regions iommufd/device: Make iommufd_device_is_attached non-static iommufd: Add IOMMU_OPTION_SW_MSI_START/SIZE ioctls iommufd/selftest: Add MOCK_FLAGS_DEVICE_NO_ATTACH iommufd/selftest: Add a testing reserved region iommufd/selftest: Add coverage for IOMMU_OPTION_SW_MSI_START/SIZE drivers/iommu/iommufd/iommufd_private.h | 7 +- drivers/iommu/iommufd/iommufd_test.h | 4 + include/uapi/linux/iommufd.h | 21 +++- drivers/iommu/iommufd/device.c | 43 +++---- drivers/iommu/iommufd/driver.c | 4 +- drivers/iommu/iommufd/io_pagetable.c | 18 ++- drivers/iommu/iommufd/ioas.c | 113 ++++++++++++++++++ drivers/iommu/iommufd/main.c | 4 + drivers/iommu/iommufd/selftest.c | 35 +++++- tools/testing/selftests/iommu/iommufd.c | 105 ++++++++++++++++ .../selftests/iommu/iommufd_fail_nth.c | 21 ++++ 11 files changed, 339 insertions(+), 36 deletions(-) -- 2.43.0

3 days, 17 hours

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[PATCH v11 00/21] TDX KVM selftests

by Sagi Shahar

This is v11 of the TDX selftests. This series is based on v6.17-rc7 Changes from v10 [1]: - Rebased on top of v6.17-rc4. - Addressed minor comments from v10. - Removed code for setting up X86_CR4_OSXMMEXCPT which is not needed for now. - Added call to vm_tdx_load_common_boot_parameters() in "KVM: selftests: Call TDX init when creating a new TDX vm" which was accidentally dropped between v9 and v10 due to code refactoring [1] https://lore.kernel.org/lkml/20250904065453.639610-1-sagis@google.com/#r Ackerley Tng (2): KVM: selftests: Add helpers to init TDX memory and finalize VM KVM: selftests: Add ucall support for TDX Erdem Aktas (2): KVM: selftests: Add TDX boot code KVM: selftests: Add support for TDX TDCALL from guest Isaku Yamahata (2): KVM: selftests: Update kvm_init_vm_address_properties() for TDX KVM: selftests: TDX: Use KVM_TDX_CAPABILITIES to validate TDs' attribute configuration Sagi Shahar (15): KVM: selftests: Allocate pgd in virt_map() as necessary KVM: selftests: Expose functions to get default sregs values KVM: selftests: Expose function to allocate guest vCPU stack KVM: selftests: Expose segment definitons to assembly files KVM: selftests: Add kbuild definitons KVM: selftests: Define structs to pass parameters to TDX boot code KVM: selftests: Set up TDX boot code region KVM: selftests: Set up TDX boot parameters region KVM: selftests: Add helper to initialize TDX VM KVM: selftests: Call TDX init when creating a new TDX vm KVM: selftests: Setup memory regions for TDX on vm creation KVM: selftests: Call KVM_TDX_INIT_VCPU when creating a new TDX vcpu KVM: selftests: Set entry point for TDX guest code KVM: selftests: Add wrapper for TDX MMIO from guest KVM: selftests: Add TDX lifecycle test tools/include/linux/kbuild.h | 18 + tools/testing/selftests/kvm/Makefile.kvm | 32 ++ .../selftests/kvm/include/ucall_common.h | 1 + .../selftests/kvm/include/x86/processor.h | 35 ++ .../selftests/kvm/include/x86/processor_asm.h | 12 + .../selftests/kvm/include/x86/tdx/td_boot.h | 74 ++++ .../kvm/include/x86/tdx/td_boot_asm.h | 16 + .../selftests/kvm/include/x86/tdx/tdcall.h | 34 ++ .../selftests/kvm/include/x86/tdx/tdx.h | 14 + .../selftests/kvm/include/x86/tdx/tdx_util.h | 86 +++++ .../testing/selftests/kvm/include/x86/ucall.h | 6 - tools/testing/selftests/kvm/lib/kvm_util.c | 10 +- .../testing/selftests/kvm/lib/x86/processor.c | 93 +++-- .../selftests/kvm/lib/x86/tdx/td_boot.S | 60 +++ .../kvm/lib/x86/tdx/td_boot_offsets.c | 21 ++ .../selftests/kvm/lib/x86/tdx/tdcall.S | 93 +++++ .../kvm/lib/x86/tdx/tdcall_offsets.c | 16 + tools/testing/selftests/kvm/lib/x86/tdx/tdx.c | 23 ++ .../selftests/kvm/lib/x86/tdx/tdx_util.c | 348 ++++++++++++++++++ tools/testing/selftests/kvm/lib/x86/ucall.c | 46 ++- tools/testing/selftests/kvm/x86/tdx_vm_test.c | 31 ++ 21 files changed, 1029 insertions(+), 40 deletions(-) create mode 100644 tools/include/linux/kbuild.h create mode 100644 tools/testing/selftests/kvm/include/x86/processor_asm.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/td_boot.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/td_boot_asm.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/tdcall.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/tdx.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/td_boot.S create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/td_boot_offsets.c create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdcall.S create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdcall_offsets.c create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdx.c create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c create mode 100644 tools/testing/selftests/kvm/x86/tdx_vm_test.c -- 2.51.0.536.g15c5d4f767-goog

3 days, 18 hours

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[PATCH 0/2] HID: multitouch: fix sticky-fingers quirks

by Benjamin Tissoires

According to Peter, we've had for a very long time an issue on some mutltiouch touchpads where the fingers were stuck in a scrolling mode, or 3 fingers gesture mode. I was unable to debug it because it was rather hard to reproduce. Recently, some people raised the issue again on libinput, and this time added a recording of the actual bug. It turns out that the sticky finger quirk that was introduced back in 2017 was only checking the last report, and that those missing releases also happen when moving from 3 to 1 finger (only 1 is released instead of 2). This solution seems to me to be the most sensible, because we could also add the NSMU quirk to win8 multitouch touchpads, but this would involve a lot more computations at each report for rather annoying corner cases. Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/1194 Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> --- Benjamin Tissoires (2): HID: multitouch: fix sticky fingers selftests/hid: add tests for missing release on the Dell Synaptics drivers/hid/hid-multitouch.c | 27 ++++++----- .../testing/selftests/hid/tests/test_multitouch.py | 55 ++++++++++++++++++++++ 2 files changed, 69 insertions(+), 13 deletions(-) --- base-commit: 54ba6d9b1393a0061600c0e49c8ebef65d60a8b2 change-id: 20250926-fix-sticky-fingers-8ae88436ae82 Best regards, -- Benjamin Tissoires <bentiss(a)kernel.org>

3 days, 19 hours

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[PATCH 6.1 00/15] genetlink: Test Netlink subsystem of Linux v6.1

by Yana Bashlykova

This series adds comprehensive testing infrastructure for Netlink and Generic Netlink The implementation includes both kernel module and userspace tests to verify correct Generic Netlink and Netlink behaviors under various conditions. Yana Bashlykova (15): genetlink: add sysfs test module for Generic Netlink genetlink: add TEST_GENL family for netlink testing genetlink: add PARALLEL_GENL test family genetlink: add test case for duplicate genl family registration genetlink: add test case for family with invalid ops genetlink: add netlink notifier support genetlink: add THIRD_GENL family genetlink: verify unregister fails for non-registered family genetlink: add LARGE_GENL stress test family selftests: net: genetlink: add packet capture test infrastructure selftests: net: genetlink: add /proc/net/netlink test selftests: net: genetlink: add Generic Netlink controller tests selftests: net: genetlink: add large family ID resolution test selftests: net: genetlink: add Netlink and Generic Netlink test suite selftests: net: genetlink: fix expectation for large family resolution drivers/net/Kconfig | 2 + drivers/net/Makefile | 2 + drivers/net/genetlink/Kconfig | 8 + drivers/net/genetlink/Makefile | 3 + .../net-pf-16-proto-16-family-PARALLEL_GENL.c | 1921 ++++++ tools/testing/selftests/net/Makefile | 6 + tools/testing/selftests/net/genetlink.c | 5152 +++++++++++++++++ 7 files changed, 7094 insertions(+) create mode 100644 drivers/net/genetlink/Kconfig create mode 100644 drivers/net/genetlink/Makefile create mode 100644 drivers/net/genetlink/net-pf-16-proto-16-family-PARALLEL_GENL.c create mode 100644 tools/testing/selftests/net/genetlink.c -- 2.34.1

3 days, 20 hours

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[PATCH v3 0/2] selftests/fchmodat2: Error handling and general cleanups

by Mark Brown

I looked at the fchmodat2() tests since I've been experiencing some random intermittent segfaults with them in my test systems, while doing so I noticed these two issues. Unfortunately I didn't figure out the original yet, unless I managed to fix it unwittingly. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Changes in v3: - Rebase onto v6.18-rc1. - Link to v2: https://lore.kernel.org/r/20250812-selftests-fchmodat2-v2-0-f2d5380e94c3@ke… Changes in v2: - Rebase onto v6.17-rc1. - Link to v1: https://lore.kernel.org/r/20250714-selftests-fchmodat2-v1-0-b74f3ee0d09c@ke… --- Mark Brown (2): selftests/fchmodat2: Clean up temporary files and directories selftests/fchmodat2: Use ksft_finished() tools/testing/selftests/fchmodat2/fchmodat2_test.c | 166 ++++++++++++++------- 1 file changed, 112 insertions(+), 54 deletions(-) --- base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 change-id: 20250711-selftests-fchmodat2-c30374c376f8 Best regards, -- Mark Brown <broonie(a)kernel.org>

3 days, 21 hours

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[PATCH] selftests: livepatch: use canonical ftrace path

by Fushuai Wang

Since v4.1 kernel, a new interface for ftrace called "tracefs" was introduced, which is usually mounted in /sys/kernel/tracing. Therefore, tracing files can now be accessed via either the legacy path /sys/kernel/debug/tracing or the newer path /sys/kernel/tracing. Signed-off-by: Fushuai Wang <wangfushuai(a)baidu.com> --- tools/testing/selftests/livepatch/functions.sh | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index 46991a029f7c..8ec0cb64ad94 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -10,7 +10,11 @@ SYSFS_KERNEL_DIR="/sys/kernel" SYSFS_KLP_DIR="$SYSFS_KERNEL_DIR/livepatch" SYSFS_DEBUG_DIR="$SYSFS_KERNEL_DIR/debug" SYSFS_KPROBES_DIR="$SYSFS_DEBUG_DIR/kprobes" -SYSFS_TRACING_DIR="$SYSFS_DEBUG_DIR/tracing" +if [[ -e /sys/kernel/tracing/trace ]]; then + SYSFS_TRACING_DIR="$SYSFS_KERNEL_DIR/tracing" +else + SYSFS_TRACING_DIR="$SYSFS_DEBUG_DIR/tracing" +fi # Kselftest framework requirement - SKIP code is 4 ksft_skip=4 -- 2.36.1

3 days, 22 hours

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[PATCH v22 0/8] fork: Support shadow stacks in clone3()

by Mark Brown

At this point I think everyone in the on the kernel side is happy with this but there were some questions from the glibc side about the value of controlling the shadow stack placement and size, especially with the current inability to reuse the shadow stack for an exited thread. With support for reuse it would be possible to have a cache of shadow stacks as is currently supported for the normal stack. Since the discussion petered out I'm resending this in order to give people something work with while prototyping. It should be possible to prototype any potential kernel features to help build out shadow stack support in userspace by enabling shadow stack writes, as suggested by Rick Edgecombe this may end up being required anyway for supporting more exotic scenarios. On all current architectures with the feature writes to shadow stack require specific instructions so there are still security benefits even with writes enabled. I did send a change implementing a feature writing a token on thread exit to allow reuse: https://lore.kernel.org/r/20250921-arm64-gcs-exit-token-v1-0-45cf64e648d5@k… but wasn't planning to refresh it without some indication from the userspace side that that'd be useful. Non-process cover letter: The kernel has added support for shadow stacks, currently x86 only using their CET feature but both arm64 and RISC-V have equivalent features (GCS and Zicfiss respectively), I am actively working on GCS[1]. With shadow stacks the hardware maintains an additional stack containing only the return addresses for branch instructions which is not generally writeable by userspace and ensures that any returns are to the recorded addresses. This provides some protection against ROP attacks and making it easier to collect call stacks. These shadow stacks are allocated in the address space of the userspace process. Our API for shadow stacks does not currently offer userspace any flexiblity for managing the allocation of shadow stacks for newly created threads, instead the kernel allocates a new shadow stack with the same size as the normal stack whenever a thread is created with the feature enabled. The stacks allocated in this way are freed by the kernel when the thread exits or shadow stacks are disabled for the thread. This lack of flexibility and control isn't ideal, in the vast majority of cases the shadow stack will be over allocated and the implicit allocation and deallocation is not consistent with other interfaces. As far as I can tell the interface is done in this manner mainly because the shadow stack patches were in development since before clone3() was implemented. Since clone3() is readily extensible let's add support for specifying a shadow stack when creating a new thread or process, keeping the current implicit allocation behaviour if one is not specified either with clone3() or through the use of clone(). The user must provide a shadow stack pointer, this must point to memory mapped for use as a shadow stackby map_shadow_stack() with an architecture specified shadow stack token at the top of the stack. Yuri Khrustalev has raised questions from the libc side regarding discoverability of extended clone3() structure sizes[2], this seems like a general issue with clone3(). There was a suggestion to add a hwcap on arm64 which isn't ideal but is doable there, though architecture specific mechanisms would also be needed for x86 (and RISC-V if it's support gets merged before this does). The idea has, however, had strong pushback from the architecture maintainers and it is possible to detect support for this in clone3() by attempting a call with a misaligned shadow stack pointer specified so no hwcap has been added. [1] https://lore.kernel.org/linux-arm-kernel/20241001-arm64-gcs-v13-0-222b78d87… [2] https://lore.kernel.org/r/aCs65ccRQtJBnZ_5@arm.com Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Changes in v22: - Rebase onto v6.18-rc1. - Cover letter updates. - Link to v21: https://lore.kernel.org/r/20250916-clone3-shadow-stack-v21-0-910493527013@k… Changes in v21: - Rebase onto https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git kernel-6.18.clone3 - Rename shadow_stack_token to shstk_token, since it's a simple rename I've kept the acks and reviews but I dropped the tested-bys just to be safe. - Link to v20: https://lore.kernel.org/r/20250902-clone3-shadow-stack-v20-0-4d9fff1c53e7@k… Changes in v20: - Comment fixes and clarifications in x86 arch_shstk_validate_clone() from Rick Edgecombe. - Spelling fix in documentation. - Link to v19: https://lore.kernel.org/r/20250819-clone3-shadow-stack-v19-0-bc957075479b@k… Changes in v19: - Rebase onto v6.17-rc1. - Link to v18: https://lore.kernel.org/r/20250702-clone3-shadow-stack-v18-0-7965d2b694db@k… Changes in v18: - Rebase onto v6.16-rc3. - Thanks to pointers from Yuri Khrustalev this version has been tested on x86 so I have removed the RFT tag. - Clarify clone3_shadow_stack_valid() comment about the Kconfig check. - Remove redundant GCSB DSYNCs in arm64 code. - Fix token validation on x86. - Link to v17: https://lore.kernel.org/r/20250609-clone3-shadow-stack-v17-0-8840ed97ff6f@k… Changes in v17: - Rebase onto v6.16-rc1. - Link to v16: https://lore.kernel.org/r/20250416-clone3-shadow-stack-v16-0-2ffc9ca3917b@k… Changes in v16: - Rebase onto v6.15-rc2. - Roll in fixes from x86 testing from Rick Edgecombe. - Rework so that the argument is shadow_stack_token. - Link to v15: https://lore.kernel.org/r/20250408-clone3-shadow-stack-v15-0-3fa245c6e3be@k… Changes in v15: - Rebase onto v6.15-rc1. - Link to v14: https://lore.kernel.org/r/20250206-clone3-shadow-stack-v14-0-805b53af73b9@k… Changes in v14: - Rebase onto v6.14-rc1. - Link to v13: https://lore.kernel.org/r/20241203-clone3-shadow-stack-v13-0-93b89a81a5ed@k… Changes in v13: - Rebase onto v6.13-rc1. - Link to v12: https://lore.kernel.org/r/20241031-clone3-shadow-stack-v12-0-7183eb8bee17@k… Changes in v12: - Add the regular prctl() to the userspace API document since arm64 support is queued in -next. - Link to v11: https://lore.kernel.org/r/20241005-clone3-shadow-stack-v11-0-2a6a2bd6d651@k… Changes in v11: - Rebase onto arm64 for-next/gcs, which is based on v6.12-rc1, and integrate arm64 support. - Rework the interface to specify a shadow stack pointer rather than a base and size like we do for the regular stack. - Link to v10: https://lore.kernel.org/r/20240821-clone3-shadow-stack-v10-0-06e8797b9445@k… Changes in v10: - Integrate fixes & improvements for the x86 implementation from Rick Edgecombe. - Require that the shadow stack be VM_WRITE. - Require that the shadow stack base and size be sizeof(void *) aligned. - Clean up trailing newline. - Link to v9: https://lore.kernel.org/r/20240819-clone3-shadow-stack-v9-0-962d74f99464@ke… Changes in v9: - Pull token validation earlier and report problems with an error return to parent rather than signal delivery to the child. - Verify that the top of the supplied shadow stack is VM_SHADOW_STACK. - Rework token validation to only do the page mapping once. - Drop no longer needed support for testing for signals in selftest. - Fix typo in comments. - Link to v8: https://lore.kernel.org/r/20240808-clone3-shadow-stack-v8-0-0acf37caf14c@ke… Changes in v8: - Fix token verification with user specified shadow stack. - Don't track user managed shadow stacks for child processes. - Link to v7: https://lore.kernel.org/r/20240731-clone3-shadow-stack-v7-0-a9532eebfb1d@ke… Changes in v7: - Rebase onto v6.11-rc1. - Typo fixes. - Link to v6: https://lore.kernel.org/r/20240623-clone3-shadow-stack-v6-0-9ee7783b1fb9@ke… Changes in v6: - Rebase onto v6.10-rc3. - Ensure we don't try to free the parent shadow stack in error paths of x86 arch code. - Spelling fixes in userspace API document. - Additional cleanups and improvements to the clone3() tests to support the shadow stack tests. - Link to v5: https://lore.kernel.org/r/20240203-clone3-shadow-stack-v5-0-322c69598e4b@ke… Changes in v5: - Rebase onto v6.8-rc2. - Rework ABI to have the user allocate the shadow stack memory with map_shadow_stack() and a token. - Force inlining of the x86 shadow stack enablement. - Move shadow stack enablement out into a shared header for reuse by other tests. - Link to v4: https://lore.kernel.org/r/20231128-clone3-shadow-stack-v4-0-8b28ffe4f676@ke… Changes in v4: - Formatting changes. - Use a define for minimum shadow stack size and move some basic validation to fork.c. - Link to v3: https://lore.kernel.org/r/20231120-clone3-shadow-stack-v3-0-a7b8ed3e2acc@ke… Changes in v3: - Rebase onto v6.7-rc2. - Remove stale shadow_stack in internal kargs. - If a shadow stack is specified unconditionally use it regardless of CLONE_ parameters. - Force enable shadow stacks in the selftest. - Update changelogs for RISC-V feature rename. - Link to v2: https://lore.kernel.org/r/20231114-clone3-shadow-stack-v2-0-b613f8681155@ke… Changes in v2: - Rebase onto v6.7-rc1. - Remove ability to provide preallocated shadow stack, just specify the desired size. - Link to v1: https://lore.kernel.org/r/20231023-clone3-shadow-stack-v1-0-d867d0b5d4d0@ke… --- Mark Brown (8): arm64/gcs: Return a success value from gcs_alloc_thread_stack() Documentation: userspace-api: Add shadow stack API documentation selftests: Provide helper header for shadow stack testing fork: Add shadow stack support to clone3() selftests/clone3: Remove redundant flushes of output streams selftests/clone3: Factor more of main loop into test_clone3() selftests/clone3: Allow tests to flag if -E2BIG is a valid error code selftests/clone3: Test shadow stack support Documentation/userspace-api/index.rst | 1 + Documentation/userspace-api/shadow_stack.rst | 44 +++++ arch/arm64/include/asm/gcs.h | 8 +- arch/arm64/kernel/process.c | 8 +- arch/arm64/mm/gcs.c | 55 +++++- arch/x86/include/asm/shstk.h | 11 +- arch/x86/kernel/process.c | 2 +- arch/x86/kernel/shstk.c | 53 ++++- include/asm-generic/cacheflush.h | 11 ++ include/linux/sched/task.h | 17 ++ include/uapi/linux/sched.h | 9 +- kernel/fork.c | 93 +++++++-- tools/testing/selftests/clone3/clone3.c | 226 ++++++++++++++++++---- tools/testing/selftests/clone3/clone3_selftests.h | 65 ++++++- tools/testing/selftests/ksft_shstk.h | 98 ++++++++++ 15 files changed, 620 insertions(+), 81 deletions(-) --- base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 change-id: 20231019-clone3-shadow-stack-15d40d2bf536 Best regards, -- Mark Brown <broonie(a)kernel.org>

3 days, 22 hours

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[PATCH v2 0/3] selftests/filelock: Make output more kselftestish

by Mark Brown

This series makes the output from the ofdlocks test a bit easier for tooling to work with, and also ignores the generated file while we're here. Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Changes in v2: - Rebase onto v6.18-rc1. - Link to v1: https://lore.kernel.org/r/20250818-selftest-filelock-ktap-v1-0-d41af77f1396… --- Mark Brown (3): kselftest/filelock: Use ksft_perror() kselftest/filelock: Report each test in oftlocks separately kselftest/filelock: Add a .gitignore file tools/testing/selftests/filelock/.gitignore | 1 + tools/testing/selftests/filelock/ofdlocks.c | 94 +++++++++++++---------------- 2 files changed, 42 insertions(+), 53 deletions(-) --- base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 change-id: 20250604-selftest-filelock-ktap-f2ae998a0de0 Best regards, -- Mark Brown <broonie(a)kernel.org>

3 days, 22 hours

1
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selftests/mm/rmap: verify correct RMAP handling of COW pages after fork()

by Itamar Dalal

Add a new test `migrate.cow_after_fork` that verifies correct RMAP handling of Copy-On-Write (COW) pages after fork(). Before a write, the parent and child share the same PFN. After a write, the child’s PFN differs. This confirms that proper COW duplication occurred and that RMAP correctly tracks page ownership transitions during COW events. Signed-off-by: Itamar-Dalal <dalalitamar(a)gmail.com> --- tools/testing/selftests/mm/rmap.c | 45 ++++++++++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/rmap.c b/tools/testing/selftests/mm/rmap.c index 13f7bccfd0a9..2ba3361fecf0 100644 --- a/tools/testing/selftests/mm/rmap.c +++ b/tools/testing/selftests/mm/rmap.c @@ -430,4 +430,47 @@ TEST_F(migrate, ksm) propagate_children(_metadata, data); } -TEST_HARNESS_MAIN +TEST_F(migrate, cow_after_fork) +{ + struct global_data *data = &self->data; + int status; + pid_t pid; + unsigned long parent_pfn, child_pfn; + int pagemap_fd; + char *region; + + /* Map private anonymous memory and fault it in */ + region = mmap(NULL, data->mapsize, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + ASSERT_NE(region, MAP_FAILED); + memset(region, 0xaa, data->mapsize); + + pagemap_fd = open("/proc/self/pagemap", O_RDONLY); + ASSERT_NE(pagemap_fd, -1); + parent_pfn = pagemap_get_pfn(pagemap_fd, region); + close(pagemap_fd); + + pid = fork(); + ASSERT_NE(pid, -1); + + if (pid == 0) { + /* Child: write to trigger COW */ + region[0] = 0xbb; + + pagemap_fd = open("/proc/self/pagemap", O_RDONLY); + ASSERT_NE(pagemap_fd, -1); + child_pfn = pagemap_get_pfn(pagemap_fd, region); + close(pagemap_fd); + + /* Expect PFN to differ after write (COW happened) */ + if (child_pfn == parent_pfn) + _exit(FAIL_ON_CHECK); + _exit(0); + } + + waitpid(pid, &status, 0); + ASSERT_EQ(WEXITSTATUS(status), 0); + munmap(region, data->mapsize); +} + +TEST_HARNESS_MAIN \ No newline at end of file -- 2.34.1

4 days, 2 hours

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Re: selftests/mm/rmap: verify correct RMAP handling of COW pages after fork()

by David Hildenbrand

On 15.10.25 10:33, Itamar Dalal wrote: > Add a new test `migrate.cow_after_fork` that verifies correct RMAP handling > of Copy-On-Write (COW) pages after fork(). > > Before a write, the parent and child share the same PFN. After a write, the > child’s PFN differs. This confirms that proper COW duplication occurred and > that RMAP correctly tracks page ownership transitions during COW events. > > Signed-off-by: Itamar-Dalal <dalalitamar(a)gmail.com > <mailto:dalalitamar@gmail.com>> > --- > tools/testing/selftests/mm/rmap.c | 45 ++++++++++++++++++++++++++++++- > 1 file changed, 44 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/mm/rmap.c b/tools/testing/ > selftests/mm/rmap.c > index 13f7bccfd0a9..2ba3361fecf0 100644 > --- a/tools/testing/selftests/mm/rmap.c > +++ b/tools/testing/selftests/mm/rmap.c > @@ -430,4 +430,47 @@ TEST_F(migrate, ksm) > propagate_children(_metadata, data); > } > > -TEST_HARNESS_MAIN > +TEST_F(migrate, cow_after_fork) > +{ > + struct global_data *data = &self->data; > + int status; > + pid_t pid; > + unsigned long parent_pfn, child_pfn; > + int pagemap_fd; > + char *region; > + > + /* Map private anonymous memory and fault it in */ > + region = mmap(NULL, data->mapsize, PROT_READ | PROT_WRITE, > + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); > + ASSERT_NE(region, MAP_FAILED); > + memset(region, 0xaa, data->mapsize); > + > + pagemap_fd = open("/proc/self/pagemap", O_RDONLY); > + ASSERT_NE(pagemap_fd, -1); > + parent_pfn = pagemap_get_pfn(pagemap_fd, region); > + close(pagemap_fd); > + > + pid = fork(); > + ASSERT_NE(pid, -1); > + > + if (pid == 0) { > + /* Child: write to trigger COW */ > + region[0] = 0xbb; > + > + pagemap_fd = open("/proc/self/pagemap", O_RDONLY); > + ASSERT_NE(pagemap_fd, -1); > + child_pfn = pagemap_get_pfn(pagemap_fd, region); > + close(pagemap_fd); > + > + /* Expect PFN to differ after write (COW happened) */ > + if (child_pfn == parent_pfn) > + _exit(FAIL_ON_CHECK); > + _exit(0); > + } > + > + waitpid(pid, &status, 0); > + ASSERT_EQ(WEXITSTATUS(status), 0); > + munmap(region, data->mapsize); > +} We have excessive cow tests in cow.c, that are independent of any PFN checks. So I don't think we need this. BTW, I never received a mail that shows up right-aligned in my mail client. Seems to be because of Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"rtl" The whole attachment should be dropped. Did you send this with git-send-email? :) -- Cheers David / dhildenb

4 days, 2 hours

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[PATCH][v3] hung_task: Panic after fixed number of hung tasks

by lirongqing

From: Li RongQing <lirongqing(a)baidu.com> Currently, when 'hung_task_panic' is enabled, the kernel panics immediately upon detecting the first hung task. However, some hung tasks are transient and the system can recover, while others are persistent and may accumulate progressively. This patch extends the 'hung_task_panic' sysctl to allow specifying the number of hung tasks that must be detected before triggering a kernel panic. This provides finer control for environments where transient hangs may occur but persistent hangs should still be fatal. The sysctl can be set to: - 0: disabled (never panic) - 1: original behavior (panic on first hung task) - N: panic when N hung tasks are detected This maintains backward compatibility while providing more flexibility for handling different hang scenarios. Signed-off-by: Li RongQing <lirongqing(a)baidu.com> --- Diff with v2: not add new sysctl, extend hung_task_panic Documentation/admin-guide/kernel-parameters.txt | 20 +++++++++++++------- Documentation/admin-guide/sysctl/kernel.rst | 3 ++- arch/arm/configs/aspeed_g5_defconfig | 2 +- kernel/configs/debug.config | 2 +- kernel/hung_task.c | 16 +++++++++++----- lib/Kconfig.debug | 10 ++++++---- tools/testing/selftests/wireguard/qemu/kernel.config | 2 +- 7 files changed, 35 insertions(+), 20 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index a51ab46..7d9a8ee 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1992,14 +1992,20 @@ the added memory block itself do not be affected. hung_task_panic= - [KNL] Should the hung task detector generate panics. - Format: 0 | 1 + [KNL] Number of hung tasks to trigger kernel panic. + Format: <int> + + Set this to the number of hung tasks that must be + detected before triggering a kernel panic. + + 0: don't panic + 1: panic immediately on first hung task + N: panic after N hung tasks are detect - A value of 1 instructs the kernel to panic when a - hung task is detected. The default value is controlled - by the CONFIG_BOOTPARAM_HUNG_TASK_PANIC build-time - option. The value selected by this boot parameter can - be changed later by the kernel.hung_task_panic sysctl. + The default value is controlled by the + CONFIG_BOOTPARAM_HUNG_TASK_PANIC build-time option. The value + selected by this boot parameter can be changed later by the + kernel.hung_task_panic sysctl. hvc_iucv= [S390] Number of z/VM IUCV hypervisor console (HVC) terminal devices. Valid values: 0..8 diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index f3ee807..0a8dfab 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -397,7 +397,8 @@ a hung task is detected. hung_task_panic =============== -Controls the kernel's behavior when a hung task is detected. +When set to a non-zero value, a kernel panic will be triggered if the +number of detected hung tasks reaches this value This file shows up if ``CONFIG_DETECT_HUNG_TASK`` is enabled. = ================================================= diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig index 61cee1e..c3b0d5f 100644 --- a/arch/arm/configs/aspeed_g5_defconfig +++ b/arch/arm/configs/aspeed_g5_defconfig @@ -308,7 +308,7 @@ CONFIG_PANIC_ON_OOPS=y CONFIG_PANIC_TIMEOUT=-1 CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y -CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y +CONFIG_BOOTPARAM_HUNG_TASK_PANIC=1 CONFIG_WQ_WATCHDOG=y # CONFIG_SCHED_DEBUG is not set CONFIG_FUNCTION_TRACER=y diff --git a/kernel/configs/debug.config b/kernel/configs/debug.config index e81327d..9f6ab7d 100644 --- a/kernel/configs/debug.config +++ b/kernel/configs/debug.config @@ -83,7 +83,7 @@ CONFIG_SLUB_DEBUG_ON=y # # Debug Oops, Lockups and Hangs # -# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set +CONFIG_BOOTPARAM_HUNG_TASK_PANIC=0 # CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set CONFIG_DEBUG_ATOMIC_SLEEP=y CONFIG_DETECT_HUNG_TASK=y diff --git a/kernel/hung_task.c b/kernel/hung_task.c index b2c1f14..3929ed9 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -81,7 +81,7 @@ static unsigned int __read_mostly sysctl_hung_task_all_cpu_backtrace; * hung task is detected: */ static unsigned int __read_mostly sysctl_hung_task_panic = - IS_ENABLED(CONFIG_BOOTPARAM_HUNG_TASK_PANIC); + CONFIG_BOOTPARAM_HUNG_TASK_PANIC; static int hung_task_panic(struct notifier_block *this, unsigned long event, void *ptr) @@ -218,8 +218,11 @@ static inline void debug_show_blocker(struct task_struct *task, unsigned long ti } #endif -static void check_hung_task(struct task_struct *t, unsigned long timeout) +static void check_hung_task(struct task_struct *t, unsigned long timeout, + unsigned long prev_detect_count) { + unsigned long total_hung_task; + if (!task_is_hung(t, timeout)) return; @@ -229,9 +232,11 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) */ sysctl_hung_task_detect_count++; + total_hung_task = sysctl_hung_task_detect_count - prev_detect_count; trace_sched_process_hang(t); - if (sysctl_hung_task_panic) { + if (sysctl_hung_task_panic && + (total_hung_task >= sysctl_hung_task_panic)) { console_verbose(); hung_task_show_lock = true; hung_task_call_panic = true; @@ -300,6 +305,7 @@ static void check_hung_uninterruptible_tasks(unsigned long timeout) int max_count = sysctl_hung_task_check_count; unsigned long last_break = jiffies; struct task_struct *g, *t; + unsigned long prev_detect_count = sysctl_hung_task_detect_count; /* * If the system crashed already then all bets are off, @@ -320,7 +326,7 @@ static void check_hung_uninterruptible_tasks(unsigned long timeout) last_break = jiffies; } - check_hung_task(t, timeout); + check_hung_task(t, timeout, prev_detect_count); } unlock: rcu_read_unlock(); @@ -389,7 +395,7 @@ static const struct ctl_table hung_task_sysctls[] = { .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE, + .extra2 = SYSCTL_INT_MAX, }, { .procname = "hung_task_check_count", diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 3034e294..077b9e4 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1258,12 +1258,14 @@ config DEFAULT_HUNG_TASK_TIMEOUT Keeping the default should be fine in most cases. config BOOTPARAM_HUNG_TASK_PANIC - bool "Panic (Reboot) On Hung Tasks" + int "Number of hung tasks to trigger kernel panic" depends on DETECT_HUNG_TASK + default 0 help - Say Y here to enable the kernel to panic on "hung tasks", - which are bugs that cause the kernel to leave a task stuck - in uninterruptible "D" state. + The number of hung tasks must be detected to trigger kernel panic. + + - 0: Don't trigger panic + - N: Panic when N hung tasks are detected The panic can be used in combination with panic_timeout, to cause the system to reboot automatically after a diff --git a/tools/testing/selftests/wireguard/qemu/kernel.config b/tools/testing/selftests/wireguard/qemu/kernel.config index 936b18b..0504c11 100644 --- a/tools/testing/selftests/wireguard/qemu/kernel.config +++ b/tools/testing/selftests/wireguard/qemu/kernel.config @@ -81,7 +81,7 @@ CONFIG_WQ_WATCHDOG=y CONFIG_DETECT_HUNG_TASK=y CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y -CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y +CONFIG_BOOTPARAM_HUNG_TASK_PANIC=1 CONFIG_PANIC_TIMEOUT=-1 CONFIG_STACKTRACE=y CONFIG_EARLY_PRINTK=y -- 2.9.4

4 days, 9 hours

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[PATCH] Add a new test 'migrate.cow_after_fork' that verifies correct RMAP handling of Copy-On-Write pages after fork(). Before a write, parent and child share the same PFN; after a write, the child’s PFN differs, confirming proper COW duplication.

by Itamar-Dalal

Signed-off-by: Itamar-Dalal <dalalitamar(a)gmail.com> --- tools/testing/selftests/mm/rmap.c | 45 ++++++++++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/rmap.c b/tools/testing/selftests/mm/rmap.c index 13f7bccfd0a9..2ba3361fecf0 100644 --- a/tools/testing/selftests/mm/rmap.c +++ b/tools/testing/selftests/mm/rmap.c @@ -430,4 +430,47 @@ TEST_F(migrate, ksm) propagate_children(_metadata, data); } -TEST_HARNESS_MAIN +TEST_F(migrate, cow_after_fork) +{ + struct global_data *data = &self->data; + int status; + pid_t pid; + unsigned long parent_pfn, child_pfn; + int pagemap_fd; + char *region; + + /* Map private anonymous memory and fault it in */ + region = mmap(NULL, data->mapsize, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + ASSERT_NE(region, MAP_FAILED); + memset(region, 0xaa, data->mapsize); + + pagemap_fd = open("/proc/self/pagemap", O_RDONLY); + ASSERT_NE(pagemap_fd, -1); + parent_pfn = pagemap_get_pfn(pagemap_fd, region); + close(pagemap_fd); + + pid = fork(); + ASSERT_NE(pid, -1); + + if (pid == 0) { + /* Child: write to trigger COW */ + region[0] = 0xbb; + + pagemap_fd = open("/proc/self/pagemap", O_RDONLY); + ASSERT_NE(pagemap_fd, -1); + child_pfn = pagemap_get_pfn(pagemap_fd, region); + close(pagemap_fd); + + /* Expect PFN to differ after write (COW happened) */ + if (child_pfn == parent_pfn) + _exit(FAIL_ON_CHECK); + _exit(0); + } + + waitpid(pid, &status, 0); + ASSERT_EQ(WEXITSTATUS(status), 0); + munmap(region, data->mapsize); +} + +TEST_HARNESS_MAIN \ No newline at end of file -- 2.34.1

4 days, 13 hours

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[PATCH] selftests/dma: add dma_map_benchmark to .gitignore

by Kriish Sharma

Add the dma_map_benchmark binary to .gitignore to prevent it from being shown as an untracked file after building the selftests. Signed-off-by: Kriish Sharma <kriish.sharma2006(a)gmail.com> --- tools/testing/selftests/dma/.gitignore | 2 ++ 1 file changed, 2 insertions(+) create mode 100644 tools/testing/selftests/dma/.gitignore diff --git a/tools/testing/selftests/dma/.gitignore b/tools/testing/selftests/dma/.gitignore new file mode 100644 index 000000000000..b4b99b6ffea3 --- /dev/null +++ b/tools/testing/selftests/dma/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +dma_map_benchmark -- 2.34.1

4 days, 14 hours

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[PATCH] selftests/tracing: Add basic test for trace_marker_raw file

by Steven Rostedt

From: Steven Rostedt <rostedt(a)goodmis.org> Commit 64cf7d058a00 ("tracing: Have trace_marker use per-cpu data to read user space") made an update that fixed both trace_marker and trace_marker_raw. But the small difference made to trace_marker_raw had a blatant bug in it that any basic testing would have uncovered. Unfortunately, the self tests have tests for trace_marker but nothing for trace_marker_raw which allowed the bug to get upstream. Add basic selftests to test trace_marker_raw so that this doesn't happen again. Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- .../ftrace/test.d/00basic/trace_marker_raw.tc | 107 ++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/trace_marker_raw.tc diff --git a/tools/testing/selftests/ftrace/test.d/00basic/trace_marker_raw.tc b/tools/testing/selftests/ftrace/test.d/00basic/trace_marker_raw.tc new file mode 100644 index 000000000000..7daf7292209e --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/00basic/trace_marker_raw.tc @@ -0,0 +1,107 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Basic tests on writing to trace_marker_raw +# requires: trace_marker_raw +# flags: instance + +is_little_endian() { + if lscpu | grep -q 'Little Endian'; then + echo 1; + else + echo 0; + fi +} + +little=`is_little_endian` + +make_str() { + id=$1 + cnt=$2 + + if [ $little -eq 1 ]; then + val=`printf "\\%03o\\%03o\\%03o\\%03o" \ + $(($id & 0xff)) \ + $((($id >> 8) & 0xff)) \ + $((($id >> 16) & 0xff)) \ + $((($id >> 24) & 0xff))` + else + val=`printf "\\%03o\\%03o\\%03o\\%03o" \ + $((($id >> 24) & 0xff)) \ + $((($id >> 16) & 0xff)) \ + $((($id >> 8) & 0xff)) \ + $(($id & 0xff))` + fi + + data=`printf -- 'X%.0s' $(seq $cnt)` + + printf "${val}${data}" +} + +write_buffer() { + id=$1 + size=$2 + + # write the string into the raw marker + make_str $id $size > trace_marker_raw +} + + +test_multiple_writes() { + + # Write a bunch of data where the id is the count of + # data to write + for i in `seq 1 10` `seq 101 110` `seq 1001 1010`; do + write_buffer $i $i + done + + # add a little buffer + echo stop > trace_marker + + # Check to make sure the number of entries is the id (rounded up by 4) + awk '/.*: # [0-9a-f]* / { + print; + cnt = -1; + for (i = 0; i < NF; i++) { + # The counter is after the "#" marker + if ( $i == "#" ) { + i++; + cnt = strtonum("0x" $i); + num = NF - (i + 1); + # The number of items is always rounded up by 4 + cnt2 = int((cnt + 3) / 4) * 4; + if (cnt2 != num) { + exit 1; + } + break; + } + } + } + // { if (NR > 30) { exit 0; } } ' trace_pipe; +} + + +get_buffer_data_size() { + sed -ne 's/^.*data.*size:$[0-9][0-9]*$.*/\1/p' events/header_page +} + +test_buffer() { + + # The id must be four bytes, test that 3 bytes fails a write + if echo -n abc > ./trace_marker_raw ; then + echo "Too small of write expected to fail but did not" + exit_fail + fi + + size=`get_buffer_data_size` + echo size = $size + + # Now add a little more than what it can handle + + if write_buffer 0xdeadbeef $size ; then + echo "Too big of write expected to fail but did not" + exit_fail + fi +} + +test_buffer +test_multiple_writes -- 2.51.0

4 days, 15 hours

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[PATCH v3] selftests/run_kselftest.sh: exit with error if tests fail

by Brendan Jackman

Parsing KTAP is quite an inconvenience, but most of the time the thing you really want to know is "did anything fail"? Let's give the user the his information without them needing to parse anything. Because of the use of subshells and namespaces, this needs to be communicated via a file. Just write arbitrary data into the file and treat non-empty content as a signal that something failed. In case any user depends on the current behaviour, such as running this from a script with `set -e` and parsing the result for failures afterwards, add a flag they can set to get the old behaviour, namely --no-error-on-fail. Signed-off-by: Brendan Jackman <jackmanb(a)google.com> --- Changes in v3: - Fixed quoting - Link to v2: https://lore.kernel.org/r/20251014-b4-ksft-error-on-fail-v2-1-b3e2657237b8@… Changes in v2: - Fixed bug in report_failure() - Made error-on-fail the default - Link to v1: https://lore.kernel.org/r/20251007-b4-ksft-error-on-fail-v1-1-71bf058f5662@… --- tools/testing/selftests/kselftest/runner.sh | 14 ++++++++++---- tools/testing/selftests/run_kselftest.sh | 14 ++++++++++++++ 2 files changed, 24 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh index 2c3c58e65a419f5ee8d7dc51a37671237a07fa0b..3a62039fa6217f3453423ff011575d0a1eb8c275 100644 --- a/tools/testing/selftests/kselftest/runner.sh +++ b/tools/testing/selftests/kselftest/runner.sh @@ -44,6 +44,12 @@ tap_timeout() fi } +report_failure() +{ + echo "not ok $*" + echo "$*" >> "$kselftest_failures_file" +} + run_one() { DIR="$1" @@ -105,7 +111,7 @@ run_one() echo "# $TEST_HDR_MSG" if [ ! -e "$TEST" ]; then echo "# Warning: file $TEST is missing!" - echo "not ok $test_num $TEST_HDR_MSG" + report_failure "$test_num $TEST_HDR_MSG" else if [ -x /usr/bin/stdbuf ]; then stdbuf="/usr/bin/stdbuf --output=L " @@ -123,7 +129,7 @@ run_one() interpreter=$(head -n 1 "$TEST" | cut -c 3-) cmd="$stdbuf $interpreter ./$BASENAME_TEST" else - echo "not ok $test_num $TEST_HDR_MSG" + report_failure "$test_num $TEST_HDR_MSG" return fi fi @@ -137,9 +143,9 @@ run_one() echo "ok $test_num $TEST_HDR_MSG # SKIP" elif [ $rc -eq $timeout_rc ]; then \ echo "#" - echo "not ok $test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds" + report_failure "$test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds" else - echo "not ok $test_num $TEST_HDR_MSG # exit=$rc" + report_failure "$test_num $TEST_HDR_MSG # exit=$rc" fi) cd - >/dev/null fi diff --git a/tools/testing/selftests/run_kselftest.sh b/tools/testing/selftests/run_kselftest.sh index 0443beacf3621ae36cb12ffd57f696ddef3526b5..d4be97498b32e975c63a1167d3060bdeba674c8c 100755 --- a/tools/testing/selftests/run_kselftest.sh +++ b/tools/testing/selftests/run_kselftest.sh @@ -33,6 +33,7 @@ Usage: $0 [OPTIONS] -c | --collection COLLECTION Run all tests from COLLECTION -l | --list List the available collection:test entries -d | --dry-run Don't actually run any tests + -f | --no-error-on-fail Don't exit with an error just because tests failed -n | --netns Run each test in namespace -h | --help Show this usage info -o | --override-timeout Number of seconds after which we timeout @@ -44,6 +45,7 @@ COLLECTIONS="" TESTS="" dryrun="" kselftest_override_timeout="" +ERROR_ON_FAIL=true while true; do case "$1" in -s | --summary) @@ -65,6 +67,9 @@ while true; do -d | --dry-run) dryrun="echo" shift ;; + -f | --no-error-on-fail) + ERROR_ON_FAIL=false + shift ;; -n | --netns) RUN_IN_NETNS=1 shift ;; @@ -105,9 +110,18 @@ if [ -n "$TESTS" ]; then available="$(echo "$valid" | sed -e 's/ /\n/g')" fi +kselftest_failures_file="$(mktemp --tmpdir kselftest-failures-XXXXXX)" +export kselftest_failures_file + collections=$(echo "$available" | cut -d: -f1 | sort | uniq) for collection in $collections ; do [ -w /dev/kmsg ] && echo "kselftest: Running tests in $collection" >> /dev/kmsg tests=$(echo "$available" | grep "^$collection:" | cut -d: -f2) ($dryrun cd "$collection" && $dryrun run_many $tests) done + +failures="$(cat "$kselftest_failures_file")" +rm "$kselftest_failures_file" +if "$ERROR_ON_FAIL" && [ "$failures" ]; then + exit 1 +fi --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20251007-b4-ksft-error-on-fail-0c2cb3246041 Best regards, -- Brendan Jackman <jackmanb(a)google.com>

4 days, 20 hours

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[PATCH v2] selftests/run_kselftest.sh: exit with error if tests fail

by Brendan Jackman

Parsing KTAP is quite an inconvenience, but most of the time the thing you really want to know is "did anything fail"? Let's give the user the his information without them needing to parse anything. Because of the use of subshells and namespaces, this needs to be communicated via a file. Just write arbitrary data into the file and treat non-empty content as a signal that something failed. In case any user depends on the current behaviour, such as running this from a script with `set -e` and parsing the result for failures afterwards, add a flag they can set to get the old behaviour, namely --no-error-on-fail. Signed-off-by: Brendan Jackman <jackmanb(a)google.com> --- Changes in v2: - Fixed bug in report_failure() - Made error-on-fail the default - Link to v1: https://lore.kernel.org/r/20251007-b4-ksft-error-on-fail-v1-1-71bf058f5662@… --- tools/testing/selftests/kselftest/runner.sh | 14 ++++++++++---- tools/testing/selftests/run_kselftest.sh | 14 ++++++++++++++ 2 files changed, 24 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh index 2c3c58e65a419f5ee8d7dc51a37671237a07fa0b..3a62039fa6217f3453423ff011575d0a1eb8c275 100644 --- a/tools/testing/selftests/kselftest/runner.sh +++ b/tools/testing/selftests/kselftest/runner.sh @@ -44,6 +44,12 @@ tap_timeout() fi } +report_failure() +{ + echo "not ok $*" + echo "$*" >> "$kselftest_failures_file" +} + run_one() { DIR="$1" @@ -105,7 +111,7 @@ run_one() echo "# $TEST_HDR_MSG" if [ ! -e "$TEST" ]; then echo "# Warning: file $TEST is missing!" - echo "not ok $test_num $TEST_HDR_MSG" + report_failure "$test_num $TEST_HDR_MSG" else if [ -x /usr/bin/stdbuf ]; then stdbuf="/usr/bin/stdbuf --output=L " @@ -123,7 +129,7 @@ run_one() interpreter=$(head -n 1 "$TEST" | cut -c 3-) cmd="$stdbuf $interpreter ./$BASENAME_TEST" else - echo "not ok $test_num $TEST_HDR_MSG" + report_failure "$test_num $TEST_HDR_MSG" return fi fi @@ -137,9 +143,9 @@ run_one() echo "ok $test_num $TEST_HDR_MSG # SKIP" elif [ $rc -eq $timeout_rc ]; then \ echo "#" - echo "not ok $test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds" + report_failure "$test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds" else - echo "not ok $test_num $TEST_HDR_MSG # exit=$rc" + report_failure "$test_num $TEST_HDR_MSG # exit=$rc" fi) cd - >/dev/null fi diff --git a/tools/testing/selftests/run_kselftest.sh b/tools/testing/selftests/run_kselftest.sh index 0443beacf3621ae36cb12ffd57f696ddef3526b5..cc1b4190edacedadafd9b993a351e4cfbf17ccd5 100755 --- a/tools/testing/selftests/run_kselftest.sh +++ b/tools/testing/selftests/run_kselftest.sh @@ -33,6 +33,7 @@ Usage: $0 [OPTIONS] -c | --collection COLLECTION Run all tests from COLLECTION -l | --list List the available collection:test entries -d | --dry-run Don't actually run any tests + -f | --no-error-on-fail Don't exit with an error just because tests failed -n | --netns Run each test in namespace -h | --help Show this usage info -o | --override-timeout Number of seconds after which we timeout @@ -44,6 +45,7 @@ COLLECTIONS="" TESTS="" dryrun="" kselftest_override_timeout="" +ERROR_ON_FAIL=true while true; do case "$1" in -s | --summary) @@ -65,6 +67,9 @@ while true; do -d | --dry-run) dryrun="echo" shift ;; + -f | --no-error-on-fail) + ERROR_ON_FAIL=false + shift ;; -n | --netns) RUN_IN_NETNS=1 shift ;; @@ -105,9 +110,18 @@ if [ -n "$TESTS" ]; then available="$(echo "$valid" | sed -e 's/ /\n/g')" fi +kselftest_failures_file=$(mktemp --tmpdir kselftest-failures-XXXXXX) +export kselftest_failures_file + collections=$(echo "$available" | cut -d: -f1 | sort | uniq) for collection in $collections ; do [ -w /dev/kmsg ] && echo "kselftest: Running tests in $collection" >> /dev/kmsg tests=$(echo "$available" | grep "^$collection:" | cut -d: -f2) ($dryrun cd "$collection" && $dryrun run_many $tests) done + +failures="$(cat "$kselftest_failures_file")" +rm "$kselftest_failures_file" +if "$ERROR_ON_FAIL" && [ "$failures" ]; then + exit 1 +fi --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20251007-b4-ksft-error-on-fail-0c2cb3246041 Best regards, -- Brendan Jackman <jackmanb(a)google.com>

4 days, 20 hours

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[PATCH bpf-next v2 0/3] Add overwrite mode for bpf ring buffer

by Xu Kuohai

When the bpf ring buffer is full, new events can not be recorded util the consumer consumes some events to free space. This may cause critical events to be discarded, such as in fault diagnostic, where recent events are more critical than older ones. So add ovewrite mode for bpf ring buffer. In this mode, the new event overwrites the oldest event when the buffer is full. v2: - remove libbpf changes (Andrii) - update overwrite benchmark v1: https://lore.kernel.org/bpf/20250804022101.2171981-1-xukuohai@huaweicloud.c… Xu Kuohai (3): bpf: Add overwrite mode for bpf ring buffer selftests/bpf: Add test for overwrite ring buffer selftests/bpf/benchs: Add producer and overwrite bench for ring buffer include/uapi/linux/bpf.h | 4 + kernel/bpf/ringbuf.c | 159 +++++++++++++++--- tools/include/uapi/linux/bpf.h | 4 + tools/testing/selftests/bpf/Makefile | 3 +- tools/testing/selftests/bpf/bench.c | 2 + .../selftests/bpf/benchs/bench_ringbufs.c | 95 ++++++++++- .../bpf/benchs/run_bench_ringbufs.sh | 4 + .../selftests/bpf/prog_tests/ringbuf.c | 74 ++++++++ .../selftests/bpf/progs/ringbuf_bench.c | 10 ++ .../bpf/progs/test_ringbuf_overwrite.c | 98 +++++++++++ 10 files changed, 418 insertions(+), 35 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/test_ringbuf_overwrite.c -- 2.43.0

4 days, 21 hours

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[PATCH net repost] selftests: net: check jq command is supported

by Wang Liang

The jq command is used in vlan_bridge_binding.sh, if it is not supported, the test will spam the following log. # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # TEST: Test bridge_binding on->off when lower down [FAIL] # Got operstate of , expected 0 The rtnetlink.sh has the same problem. It makes sense to check if jq is installed before running these tests. After this patch, the vlan_bridge_binding.sh skipped if jq is not supported: # timeout set to 3600 # selftests: net: vlan_bridge_binding.sh # TEST: jq not installed [SKIP] Fixes: dca12e9ab760 ("selftests: net: Add a VLAN bridge binding selftest") Fixes: 6a414fd77f61 ("selftests: rtnetlink: Add an address proto test") Signed-off-by: Wang Liang <wangliang74(a)huawei.com> Reviewed-by: Hangbin Liu <liuhangbin(a)gmail.com> --- tools/testing/selftests/net/rtnetlink.sh | 2 ++ tools/testing/selftests/net/vlan_bridge_binding.sh | 2 ++ 2 files changed, 4 insertions(+) diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh index dbf77513f617..163a084d525d 100755 --- a/tools/testing/selftests/net/rtnetlink.sh +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -1466,6 +1466,8 @@ usage: ${0##*/} OPTS EOF } +require_command jq + #check for needed privileges if [ "$(id -u)" -ne 0 ];then end_test "SKIP: Need root privileges" diff --git a/tools/testing/selftests/net/vlan_bridge_binding.sh b/tools/testing/selftests/net/vlan_bridge_binding.sh index db481af9b6b3..e8c02c64e03a 100755 --- a/tools/testing/selftests/net/vlan_bridge_binding.sh +++ b/tools/testing/selftests/net/vlan_bridge_binding.sh @@ -249,6 +249,8 @@ test_binding_toggle_off_when_upper_down() do_test_binding_off : "on->off when upper down" } +require_command jq + trap defer_scopes_cleanup EXIT setup_prepare tests_run -- 2.34.1

4 days, 22 hours

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[PATCH net-next v5 1/2] net/tls: support setting the maximum payload size

by Wilfred Mallawa

From: Wilfred Mallawa <wilfred.mallawa(a)wdc.com> During a handshake, an endpoint may specify a maximum record size limit. Currently, the kernel defaults to TLS_MAX_PAYLOAD_SIZE (16KB) for the maximum record size. Meaning that, the outgoing records from the kernel can exceed a lower size negotiated during the handshake. In such a case, the TLS endpoint must send a fatal "record_overflow" alert [1], and thus the record is discarded. Upcoming Western Digital NVMe-TCP hardware controllers implement TLS support. For these devices, supporting TLS record size negotiation is necessary because the maximum TLS record size supported by the controller is less than the default 16KB currently used by the kernel. Currently, there is no way to inform the kernel of such a limit. This patch adds support to a new setsockopt() option `TLS_TX_MAX_PAYLOAD_LEN` that allows for setting the maximum plaintext fragment size. Once set, outgoing records are no larger than the size specified. This option can be used to specify the record size limit. [1] https://www.rfc-editor.org/rfc/rfc8449 Signed-off-by: Wilfred Mallawa <wilfred.mallawa(a)wdc.com> --- Changes V4 -> V5 - Change the socket option to TLS_TX_MAX_PAYLOAD_LEN, such that we can limit the payload length in a generic way, as pposed to strictly specifying record size limit. No functional changes other than removing TLS 1.3 content byte length checks for this argument. - Lock the socket when calling do_tls_setsockopt_tx_payload_len() V4: https://lore.kernel.org/netdev/20250923053207.113938-1-wilfred.opensource@g… --- Documentation/networking/tls.rst | 11 ++++++ include/net/tls.h | 3 ++ include/uapi/linux/tls.h | 2 ++ net/tls/tls_device.c | 2 +- net/tls/tls_main.c | 62 ++++++++++++++++++++++++++++++++ net/tls/tls_sw.c | 2 +- 6 files changed, 80 insertions(+), 2 deletions(-) diff --git a/Documentation/networking/tls.rst b/Documentation/networking/tls.rst index 36cc7afc2527..dabab17ab84a 100644 --- a/Documentation/networking/tls.rst +++ b/Documentation/networking/tls.rst @@ -280,6 +280,17 @@ If the record decrypted turns out to had been padded or is not a data record it will be decrypted again into a kernel buffer without zero copy. Such events are counted in the ``TlsDecryptRetry`` statistic. +TLS_TX_MAX_PAYLOAD_LEN +~~~~~~~~~~~~~~~~~~~~~~ + +Sets the maximum size for the plaintext of a protected record. + +When this option is set, the kernel enforces this limit on all transmitted TLS +records, ensuring no plaintext fragment exceeds the specified size. This can be +used to specify the TLS Record Size Limit [1]. + +[1] https://datatracker.ietf.org/doc/html/rfc8449 + Statistics ========== diff --git a/include/net/tls.h b/include/net/tls.h index 857340338b69..f2af113728aa 100644 --- a/include/net/tls.h +++ b/include/net/tls.h @@ -53,6 +53,8 @@ struct tls_rec; /* Maximum data size carried in a TLS record */ #define TLS_MAX_PAYLOAD_SIZE ((size_t)1 << 14) +/* Minimum record size limit as per RFC8449 */ +#define TLS_MIN_RECORD_SIZE_LIM ((size_t)1 << 6) #define TLS_HEADER_SIZE 5 #define TLS_NONCE_OFFSET TLS_HEADER_SIZE @@ -226,6 +228,7 @@ struct tls_context { u8 rx_conf:3; u8 zerocopy_sendfile:1; u8 rx_no_pad:1; + u16 tx_max_payload_len; int (*push_pending_record)(struct sock *sk, int flags); void (*sk_write_space)(struct sock *sk); diff --git a/include/uapi/linux/tls.h b/include/uapi/linux/tls.h index b66a800389cc..b8b9c42f848c 100644 --- a/include/uapi/linux/tls.h +++ b/include/uapi/linux/tls.h @@ -41,6 +41,7 @@ #define TLS_RX 2 /* Set receive parameters */ #define TLS_TX_ZEROCOPY_RO 3 /* TX zerocopy (only sendfile now) */ #define TLS_RX_EXPECT_NO_PAD 4 /* Attempt opportunistic zero-copy */ +#define TLS_TX_MAX_PAYLOAD_LEN 5 /* Maximum plaintext size */ /* Supported versions */ #define TLS_VERSION_MINOR(ver) ((ver) & 0xFF) @@ -194,6 +195,7 @@ enum { TLS_INFO_RXCONF, TLS_INFO_ZC_RO_TX, TLS_INFO_RX_NO_PAD, + TLS_INFO_TX_MAX_PAYLOAD_LEN, __TLS_INFO_MAX, }; #define TLS_INFO_MAX (__TLS_INFO_MAX - 1) diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index a64ae15b1a60..c6289c73cffc 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -461,7 +461,7 @@ static int tls_push_data(struct sock *sk, /* TLS_HEADER_SIZE is not counted as part of the TLS record, and * we need to leave room for an authentication tag. */ - max_open_record_len = TLS_MAX_PAYLOAD_SIZE + + max_open_record_len = tls_ctx->tx_max_payload_len + prot->prepend_size; do { rc = tls_do_allocation(sk, ctx, pfrag, prot->prepend_size); diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c index a3ccb3135e51..b481d1add14e 100644 --- a/net/tls/tls_main.c +++ b/net/tls/tls_main.c @@ -544,6 +544,28 @@ static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, return 0; } +static int do_tls_getsockopt_tx_payload_len(struct sock *sk, char __user *optval, + int __user *optlen) +{ + struct tls_context *ctx = tls_get_ctx(sk); + u16 payload_len = ctx->tx_max_payload_len; + int len; + + if (get_user(len, optlen)) + return -EFAULT; + + if (len < sizeof(payload_len)) + return -EINVAL; + + if (put_user(sizeof(payload_len), optlen)) + return -EFAULT; + + if (copy_to_user(optval, &payload_len, sizeof(payload_len))) + return -EFAULT; + + return 0; +} + static int do_tls_getsockopt(struct sock *sk, int optname, char __user *optval, int __user *optlen) { @@ -563,6 +585,9 @@ static int do_tls_getsockopt(struct sock *sk, int optname, case TLS_RX_EXPECT_NO_PAD: rc = do_tls_getsockopt_no_pad(sk, optval, optlen); break; + case TLS_TX_MAX_PAYLOAD_LEN: + rc = do_tls_getsockopt_tx_payload_len(sk, optval, optlen); + break; default: rc = -ENOPROTOOPT; break; @@ -812,6 +837,30 @@ static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, return rc; } +static int do_tls_setsockopt_tx_payload_len(struct sock *sk, sockptr_t optval, + unsigned int optlen) +{ + struct tls_context *ctx = tls_get_ctx(sk); + struct tls_sw_context_tx *sw_ctx = tls_sw_ctx_tx(ctx); + u16 value; + + if (sw_ctx->open_rec) + return -EBUSY; + + if (sockptr_is_null(optval) || optlen != sizeof(value)) + return -EINVAL; + + if (copy_from_sockptr(&value, optval, sizeof(value))) + return -EFAULT; + + if (value < TLS_MIN_RECORD_SIZE_LIM || value > TLS_MAX_PAYLOAD_SIZE) + return -EINVAL; + + ctx->tx_max_payload_len = value; + + return 0; +} + static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, unsigned int optlen) { @@ -833,6 +882,11 @@ static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, case TLS_RX_EXPECT_NO_PAD: rc = do_tls_setsockopt_no_pad(sk, optval, optlen); break; + case TLS_TX_MAX_PAYLOAD_LEN: + lock_sock(sk); + rc = do_tls_setsockopt_tx_payload_len(sk, optval, optlen); + release_sock(sk); + break; default: rc = -ENOPROTOOPT; break; @@ -1022,6 +1076,7 @@ static int tls_init(struct sock *sk) ctx->tx_conf = TLS_BASE; ctx->rx_conf = TLS_BASE; + ctx->tx_max_payload_len = TLS_MAX_PAYLOAD_SIZE; update_sk_prot(sk, ctx); out: write_unlock_bh(&sk->sk_callback_lock); @@ -1111,6 +1166,12 @@ static int tls_get_info(struct sock *sk, struct sk_buff *skb, bool net_admin) goto nla_failure; } + err = nla_put_u16(skb, TLS_INFO_TX_MAX_PAYLOAD_LEN, + ctx->tx_max_payload_len); + + if (err) + goto nla_failure; + rcu_read_unlock(); nla_nest_end(skb, start); return 0; @@ -1132,6 +1193,7 @@ static size_t tls_get_info_size(const struct sock *sk, bool net_admin) nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ + nla_total_size(sizeof(u16)) + /* TLS_INFO_TX_MAX_PAYLOAD_LEN */ 0; return size; diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index daac9fd4be7e..e76ea38b712a 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -1079,7 +1079,7 @@ static int tls_sw_sendmsg_locked(struct sock *sk, struct msghdr *msg, orig_size = msg_pl->sg.size; full_record = false; try_to_copy = msg_data_left(msg); - record_room = TLS_MAX_PAYLOAD_SIZE - msg_pl->sg.size; + record_room = tls_ctx->tx_max_payload_len - msg_pl->sg.size; if (try_to_copy >= record_room) { try_to_copy = record_room; full_record = true; -- 2.51.0

5 days, 1 hour

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[PATCH v2] vdso: Remove struct getcpu_cache

by Thomas Weißschuh

The cache parameter of getcpu() is not used by the kernel and no user ever passes it in anyways. Remove the struct and its header. As a side-effect we get rid of an unwanted inclusion of the linux/ header namespace from vDSO code. Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> --- Changes in v2: - Rebase on v6.18-rc1 - Link to v1: https://lore.kernel.org/r/20250826-getcpu_cache-v1-1-8748318f6141@linutroni… --- We could also completely remove the parameter, but I am not sure if that is a good idea for syscalls and vDSO entrypoints. --- arch/loongarch/vdso/vgetcpu.c | 5 ++--- arch/s390/kernel/vdso64/getcpu.c | 3 +-- arch/s390/kernel/vdso64/vdso.h | 4 +--- arch/x86/entry/vdso/vgetcpu.c | 5 ++--- arch/x86/include/asm/vdso/processor.h | 4 +--- arch/x86/um/vdso/um_vdso.c | 7 +++---- include/linux/getcpu.h | 19 ------------------- include/linux/syscalls.h | 3 +-- kernel/sys.c | 4 +--- tools/testing/selftests/vDSO/vdso_test_getcpu.c | 4 +--- 10 files changed, 13 insertions(+), 45 deletions(-) diff --git a/arch/loongarch/vdso/vgetcpu.c b/arch/loongarch/vdso/vgetcpu.c index 5301cd9d0f839eb0fd7b73a1d36e80aaa75d5e76..aefba899873ed035d70766a95b0b6fea881e94df 100644 --- a/arch/loongarch/vdso/vgetcpu.c +++ b/arch/loongarch/vdso/vgetcpu.c @@ -4,7 +4,6 @@ */ #include <asm/vdso.h> -#include <linux/getcpu.h> static __always_inline int read_cpu_id(void) { @@ -20,8 +19,8 @@ static __always_inline int read_cpu_id(void) } extern -int __vdso_getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *unused); -int __vdso_getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *unused) +int __vdso_getcpu(unsigned int *cpu, unsigned int *node, void *unused); +int __vdso_getcpu(unsigned int *cpu, unsigned int *node, void *unused) { int cpu_id; diff --git a/arch/s390/kernel/vdso64/getcpu.c b/arch/s390/kernel/vdso64/getcpu.c index 5c5d4a848b7669436e73df8e3b711e5b876eb3db..1e17665616c5fa766ca66c8de276b212528934bd 100644 --- a/arch/s390/kernel/vdso64/getcpu.c +++ b/arch/s390/kernel/vdso64/getcpu.c @@ -2,11 +2,10 @@ /* Copyright IBM Corp. 2020 */ #include <linux/compiler.h> -#include <linux/getcpu.h> #include <asm/timex.h> #include "vdso.h" -int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused) +int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, void *unused) { union tod_clock clk; diff --git a/arch/s390/kernel/vdso64/vdso.h b/arch/s390/kernel/vdso64/vdso.h index 9e5397e7b590a23c149ccc6043d0c0b0d5ea8457..cadd307d7a365cabf53f5c8d313be3718625533d 100644 --- a/arch/s390/kernel/vdso64/vdso.h +++ b/arch/s390/kernel/vdso64/vdso.h @@ -4,9 +4,7 @@ #include <vdso/datapage.h> -struct getcpu_cache; - -int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused); +int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, void *unused); int __s390_vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz); int __s390_vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts); int __s390_vdso_clock_getres(clockid_t clock, struct __kernel_timespec *ts); diff --git a/arch/x86/entry/vdso/vgetcpu.c b/arch/x86/entry/vdso/vgetcpu.c index e4640306b2e3c95d74d73037ab6b09294b8e1d6c..6381b472b7c52487bccf3cbf0664c3d7a0e59699 100644 --- a/arch/x86/entry/vdso/vgetcpu.c +++ b/arch/x86/entry/vdso/vgetcpu.c @@ -6,17 +6,16 @@ */ #include <linux/kernel.h> -#include <linux/getcpu.h> #include <asm/segment.h> #include <vdso/processor.h> notrace long -__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused) +__vdso_getcpu(unsigned *cpu, unsigned *node, void *unused) { vdso_read_cpunode(cpu, node); return 0; } -long getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache) +long getcpu(unsigned *cpu, unsigned *node, void *tcache) __attribute__((weak, alias("__vdso_getcpu"))); diff --git a/arch/x86/include/asm/vdso/processor.h b/arch/x86/include/asm/vdso/processor.h index 7000aeb59aa287e2119c3d43ab3eaf82befb59c4..93e0e24e5cb47f7b0056c13f2a7f2304ed4a0595 100644 --- a/arch/x86/include/asm/vdso/processor.h +++ b/arch/x86/include/asm/vdso/processor.h @@ -18,9 +18,7 @@ static __always_inline void cpu_relax(void) native_pause(); } -struct getcpu_cache; - -notrace long __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused); +notrace long __vdso_getcpu(unsigned *cpu, unsigned *node, void *unused); #endif /* __ASSEMBLER__ */ diff --git a/arch/x86/um/vdso/um_vdso.c b/arch/x86/um/vdso/um_vdso.c index cbae2584124fd0ff0f9d240c33fefb8d213c84cd..9aa2c62cce6b7a07bbaf8441014d347162d1950d 100644 --- a/arch/x86/um/vdso/um_vdso.c +++ b/arch/x86/um/vdso/um_vdso.c @@ -10,14 +10,13 @@ #define DISABLE_BRANCH_PROFILING #include <linux/time.h> -#include <linux/getcpu.h> #include <asm/unistd.h> /* workaround for -Wmissing-prototypes warnings */ int __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts); int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz); __kernel_old_time_t __vdso_time(__kernel_old_time_t *t); -long __vdso_getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *unused); +long __vdso_getcpu(unsigned int *cpu, unsigned int *node, void *unused); int __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts) { @@ -60,7 +59,7 @@ __kernel_old_time_t __vdso_time(__kernel_old_time_t *t) __kernel_old_time_t time(__kernel_old_time_t *t) __attribute__((weak, alias("__vdso_time"))); long -__vdso_getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *unused) +__vdso_getcpu(unsigned int *cpu, unsigned int *node, void *unused) { /* * UML does not support SMP, we can cheat here. :) @@ -74,5 +73,5 @@ __vdso_getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *unused return 0; } -long getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *tcache) +long getcpu(unsigned int *cpu, unsigned int *node, void *tcache) __attribute__((weak, alias("__vdso_getcpu"))); diff --git a/include/linux/getcpu.h b/include/linux/getcpu.h deleted file mode 100644 index c304dcdb4eac2a9117080e6a14f4e3f28d07fd56..0000000000000000000000000000000000000000 --- a/include/linux/getcpu.h +++ /dev/null @@ -1,19 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _LINUX_GETCPU_H -#define _LINUX_GETCPU_H 1 - -/* Cache for getcpu() to speed it up. Results might be a short time - out of date, but will be faster. - - User programs should not refer to the contents of this structure. - I repeat they should not refer to it. If they do they will break - in future kernels. - - It is only a private cache for vgetcpu(). It will change in future kernels. - The user program must store this information per thread (__thread) - If you want 100% accurate information pass NULL instead. */ -struct getcpu_cache { - unsigned long blob[128 / sizeof(long)]; -}; - -#endif diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 66c06fcdfe19e27b99eb9a187c22e022e260802f..403488e5eba906ecf40975fc3cb29ed0402491f2 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -59,7 +59,6 @@ struct compat_stat; struct old_timeval32; struct robust_list_head; struct futex_waitv; -struct getcpu_cache; struct old_linux_dirent; struct perf_event_attr; struct file_handle; @@ -714,7 +713,7 @@ asmlinkage long sys_getrusage(int who, struct rusage __user *ru); asmlinkage long sys_umask(int mask); asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5); -asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); +asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, void __user *cache); asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv, struct timezone __user *tz); asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv, diff --git a/kernel/sys.c b/kernel/sys.c index 8b58eece4e580b883d19bb1336aff627ae783a4d..f1780ab132a3fbce6aac937ade5b9a35d9837f13 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -31,7 +31,6 @@ #include <linux/tty.h> #include <linux/signal.h> #include <linux/cn_proc.h> -#include <linux/getcpu.h> #include <linux/task_io_accounting_ops.h> #include <linux/seccomp.h> #include <linux/cpu.h> @@ -2876,8 +2875,7 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, return error; } -SYSCALL_DEFINE3(getcpu, unsigned __user *, cpup, unsigned __user *, nodep, - struct getcpu_cache __user *, unused) +SYSCALL_DEFINE3(getcpu, unsigned __user *, cpup, unsigned __user *, nodep, void __user *, unused) { int err = 0; int cpu = raw_smp_processor_id(); diff --git a/tools/testing/selftests/vDSO/vdso_test_getcpu.c b/tools/testing/selftests/vDSO/vdso_test_getcpu.c index cdeaed45fb26c61f6314c58fe1b71fa0be3c0108..994ce569dc37c6689b1a3c79156e3dfc8bf27f22 100644 --- a/tools/testing/selftests/vDSO/vdso_test_getcpu.c +++ b/tools/testing/selftests/vDSO/vdso_test_getcpu.c @@ -16,9 +16,7 @@ #include "vdso_config.h" #include "vdso_call.h" -struct getcpu_cache; -typedef long (*getcpu_t)(unsigned int *, unsigned int *, - struct getcpu_cache *); +typedef long (*getcpu_t)(unsigned int *, unsigned int *, void *); int main(int argc, char **argv) { --- base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787 change-id: 20250825-getcpu_cache-3abcd2e65437 Best regards, -- Thomas Weißschuh <thomas.weissschuh(a)linutronix.de>

5 days, 2 hours

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[PATCH v4 00/35] sparc64: vdso: Switch to the generic vDSO library

by Thomas Weißschuh

The generic vDSO provides a lot common functionality shared between different architectures. SPARC is the last architecture not using it, preventing some necessary code cleanup. Make use of the generic infrastructure. Follow-up to and replacement for Arnd's SPARC vDSO removal patches: https://lore.kernel.org/lkml/20250707144726.4008707-1-arnd@kernel.org/ SPARC64 can not map .bss into userspace, so the vDSO datapages are switched over to be allocated dynamically. This requires changes to the s390 and random subsystem vDSO initialization as preparation. The random subsystem changes in turn require some cleanup of the vDSO headers to not end up as ugly #ifdef mess. Tested on a Niagara T4 and QEMU. This has a semantic conflict with my series "vdso: Reject absolute relocations during build" [0]. The last patch of this series expects all users of the generic vDSO library to use the vdsocheck tool. This is not the case (yet) for SPARC64. I do have the patches for the integration, the specifics will depend on which series is applied first. Based on v6.18-rc1. [0] https://lore.kernel.org/lkml/20250812-vdso-absolute-reloc-v4-0-61a8b615e5ec… Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> --- Changes in v4: - Rebase on v6.18-rc1. - Keep inclusion of asm/clocksource.h from linux/clocksource.h - Reword description of "s390/time: Set up vDSO datapage later" - Link to v3: https://lore.kernel.org/r/20250917-vdso-sparc64-generic-2-v3-0-3679b1bc8ee8… Changes in v3: - Allocate vDSO data pages dynamically (and lots of preparations for that) - Drop clock_getres() - Fix 32bit clock_gettime() syscall fallback - Link to v2: https://lore.kernel.org/r/20250815-vdso-sparc64-generic-2-v2-0-b5ff80672347… Changes in v2: - Rebase on v6.17-rc1 - Drop RFC state - Fix typo in commit message - Drop duplicate 'select GENERIC_TIME_VSYSCALL' - Merge "sparc64: time: Remove architecture-specific clocksource data" into the main conversion patch. It violated the check in __clocksource_register_scale() - Link to v1: https://lore.kernel.org/r/20250724-vdso-sparc64-generic-2-v1-0-e376a3bd24d1… --- Arnd Bergmann (1): clocksource: remove ARCH_CLOCKSOURCE_DATA Thomas Weißschuh (34): selftests: vDSO: vdso_test_correctness: Handle different tv_usec types arm64: vDSO: getrandom: Explicitly include asm/alternative.h arm64: vDSO: gettimeofday: Explicitly include vdso/clocksource.h arm64: vDSO: compat_gettimeofday: Add explicit includes ARM: vdso: gettimeofday: Add explicit includes powerpc/vdso/gettimeofday: Explicitly include vdso/time32.h powerpc/vdso: Explicitly include asm/cputable.h and asm/feature-fixups.h LoongArch: vDSO: Explicitly include asm/vdso/vdso.h MIPS: vdso: Add include guard to asm/vdso/vdso.h MIPS: vdso: Explicitly include asm/vdso/vdso.h random: vDSO: Add explicit includes vdso/gettimeofday: Add explicit includes vdso/helpers: Explicitly include vdso/processor.h vdso/datapage: Remove inclusion of gettimeofday.h vdso/datapage: Trim down unnecessary includes random: vDSO: trim vDSO includes random: vDSO: remove ifdeffery random: vDSO: split out datapage update into helper functions random: vDSO: only access vDSO datapage after random_init() s390/time: Set up vDSO datapage later vdso/datastore: Reduce scope of some variables in vvar_fault() vdso/datastore: Drop inclusion of linux/mmap_lock.h vdso/datastore: Map pages through struct page vdso/datastore: Allocate data pages dynamically sparc64: vdso: Link with -z noexecstack sparc64: vdso: Remove obsolete "fake section table" reservation sparc64: vdso: Replace code patching with runtime conditional sparc64: vdso: Move hardware counter read into header sparc64: vdso: Move syscall fallbacks into header sparc64: vdso: Introduce vdso/processor.h sparc64: vdso: Switch to the generic vDSO library sparc64: vdso2c: Drop sym_vvar_start handling sparc64: vdso2c: Remove symbol handling sparc64: vdso: Implement clock_gettime64() arch/arm/include/asm/vdso/gettimeofday.h | 2 + arch/arm64/include/asm/vdso/compat_gettimeofday.h | 3 + arch/arm64/include/asm/vdso/gettimeofday.h | 2 + arch/arm64/kernel/vdso/vgetrandom.c | 2 + arch/loongarch/kernel/process.c | 1 + arch/loongarch/kernel/vdso.c | 1 + arch/mips/include/asm/vdso/vdso.h | 5 + arch/mips/kernel/vdso.c | 1 + arch/powerpc/include/asm/vdso/gettimeofday.h | 1 + arch/powerpc/include/asm/vdso/processor.h | 3 + arch/s390/kernel/time.c | 4 +- arch/sparc/Kconfig | 3 +- arch/sparc/include/asm/clocksource.h | 9 - arch/sparc/include/asm/processor.h | 3 + arch/sparc/include/asm/processor_32.h | 2 - arch/sparc/include/asm/processor_64.h | 25 -- arch/sparc/include/asm/vdso.h | 2 - arch/sparc/include/asm/vdso/clocksource.h | 10 + arch/sparc/include/asm/vdso/gettimeofday.h | 184 ++++++++++ arch/sparc/include/asm/vdso/processor.h | 41 +++ arch/sparc/include/asm/vdso/vsyscall.h | 10 + arch/sparc/include/asm/vvar.h | 75 ---- arch/sparc/kernel/Makefile | 1 - arch/sparc/kernel/time_64.c | 6 +- arch/sparc/kernel/vdso.c | 69 ---- arch/sparc/vdso/Makefile | 8 +- arch/sparc/vdso/vclock_gettime.c | 380 ++------------------- arch/sparc/vdso/vdso-layout.lds.S | 26 +- arch/sparc/vdso/vdso.lds.S | 2 - arch/sparc/vdso/vdso2c.c | 24 -- arch/sparc/vdso/vdso2c.h | 45 +-- arch/sparc/vdso/vdso32/vdso32.lds.S | 4 +- arch/sparc/vdso/vma.c | 274 +-------------- drivers/char/random.c | 71 ++-- include/linux/clocksource.h | 6 +- include/linux/vdso_datastore.h | 6 + include/vdso/datapage.h | 23 +- include/vdso/helpers.h | 1 + init/main.c | 2 + kernel/time/Kconfig | 4 - lib/vdso/datastore.c | 73 ++-- lib/vdso/getrandom.c | 3 + lib/vdso/gettimeofday.c | 17 + .../testing/selftests/vDSO/vdso_test_correctness.c | 8 +- 44 files changed, 448 insertions(+), 994 deletions(-) --- base-commit: 28b1ac5ccd8d4900a8f53f0e6e84d517a7ccc71f change-id: 20250722-vdso-sparc64-generic-2-25f2e058e92c Best regards, -- Thomas Weißschuh <thomas.weissschuh(a)linutronix.de>

5 days, 3 hours

2
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[PATCH v3 0/4] selftests/resctrl: Enable MBM and MBA tests on AMD

by Babu Moger

The MBM (Memory Bandwidth Monitoring) and MBA (Memory Bandwidth Allocation) features are not enabled for AMD systems. The reason was lack of perf counters to compare the resctrl test results. Starting with the commit 25e56847821f ("perf/x86/amd/uncore: Add memory controller support"), AMD now supports the UMC (Unified Memory Controller) perf events. These events can be used to compare the test results. This series adds the support to detect the UMC events and enable MBM/MBA tests for AMD systems. v3: Note: Based the series on top of latest kselftests/master 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 (tag: v6.10-rc1). Also applied the patches from the series https://lore.kernel.org/lkml/20240531131142.1716-1-ilpo.jarvinen@linux.inte… Separated the fix patch. Renamed the imc to just mc to make it generic. Changed the search string "uncore_imc_" and "amd_umc_" Changes related rebase to latest kselftest tree. v2: Changes. a. Rebased on top of tip/master (Apr 25, 2024) b. Addressed Ilpo comments except the one about close call. It seems more clear to keep READ and WRITE separate. https://lore.kernel.org/lkml/8e4badb7-6cc5-61f1-e041-d902209a90d5@linux.int… c. Used ksft_perror call when applicable. d. Added vendor check for non contiguous CBM check. v1: https://lore.kernel.org/lkml/cover.1708637563.git.babu.moger@amd.com/ Babu Moger (4): selftests/resctrl: Rename variables and functions to generic names selftests/resctrl: Pass sysfs controller name of the vendor selftests/resctrl: Add support for MBM and MBA tests on AMD selftests/resctrl: Enable MBA/MBA tests on AMD tools/testing/selftests/resctrl/mba_test.c | 25 +- tools/testing/selftests/resctrl/mbm_test.c | 23 +- tools/testing/selftests/resctrl/resctrl.h | 2 +- tools/testing/selftests/resctrl/resctrl_val.c | 305 ++++++++++-------- tools/testing/selftests/resctrl/resctrlfs.c | 2 +- 5 files changed, 191 insertions(+), 166 deletions(-) -- 2.34.1

5 days, 3 hours

5
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[PATCH v4 0/3] VMM can handle guest SEA via KVM_EXIT_ARM_SEA

by Jiaqi Yan

Problem ======= When host APEI is unable to claim a synchronous external abort (SEA) during guest abort, today KVM directly injects an asynchronous SError into the VCPU then resumes it. The injected SError usually results in unpleasant guest kernel panic. One of the major situation of guest SEA is when VCPU consumes recoverable uncorrected memory error (UER), which is not uncommon at all in modern datacenter servers with large amounts of physical memory. Although SError and guest panic is sufficient to stop the propagation of corrupted memory, there is room to recover from an UER in a more graceful manner. Proposed Solution ================= The idea is, we can replay the SEA to the faulting VCPU. If the memory error consumption or the fault that cause SEA is not from guest kernel, the blast radius can be limited to the poison-consuming guest process, while the VM can keep running. In addition, instead of doing under the hood without involving userspace, there are benefits to redirect the SEA to VMM: - VM customers care about the disruptions caused by memory errors, and VMM usually has the responsibility to start the process of notifying the customers of memory error events in their VMs. For example some cloud provider emits a critical log in their observability UI [1], and provides a playbook for customers on how to mitigate disruptions to their workloads. - VMM can protect future memory error consumption by unmapping the poisoned pages from stage-2 page table with KVM userfault [2], or by splitting the memslot that contains the poisoned pages. - VMM can keep track of SEA events in the VM. When VMM thinks the status on the host or the VM is bad enough, e.g. number of distinct SEAs exceeds a threshold, it can restart the VM on another healthy host. - Behavior parity with x86 architecture. When machine check exception (MCE) is caused by VCPU, kernel or KVM signals userspace SIGBUS to let VMM either recover from the MCE, or terminate itself with VM. The prior RFC proposes to implement SIGBUS on arm64 as well, but Marc preferred KVM exit over signal [3]. However, implementation aside, returning SEA to VMM is on par with returning MCE to VMM. Once SEA is redirected to VMM, among other actions, VMM is encouraged to inject external aborts into the faulting VCPU. New UAPIs ========= This patchset introduces following userspace-visible changes to empower VMM to control what happens for SEA on guest memory: - KVM_CAP_ARM_SEA_TO_USER. While taking SEA, if userspace has enabled this new capability at VM creation, and the SEA is not owned by kernel allocated memory, instead of injecting SError, return KVM_EXIT_ARM_SEA to userspace. - KVM_EXIT_ARM_SEA. This is the VM exit reason VMM gets. The details about the SEA is provided in arm_sea as much as possible, including sanitized ESR value at EL2, faulting guest virtual and physical addresses if available. * From v3 [4] - Rebased on commit 3a8660878839 ("Linux 6.18-rc1"). - In selftest, print a message if GVA or GPA expects to be valid. * From v2 [5]: - Rebased on "[PATCH] KVM: arm64: nv: Handle SEAs due to VNCR redirection" [6] and kvmarm/next commit 7b8346bd9fce6 ("KVM: arm64: Don't attempt vLPI mappings when vPE allocation is disabled") - Took the host_owns_sea implementation from Oliver [7, 8]. - Excluded the guest SEA injection patches. - Updated selftest. * From v1 [9]: - Rebased on commit 4d62121ce9b5 ("KVM: arm64: vgic-debug: Avoid dereferencing NULL ITE pointer"). - Sanitize ESR_EL2 before reporting it to userspace. - Do not do KVM_EXIT_ARM_SEA when SEA is caused by memory allocated to stage-2 translation table. [1] https://cloud.google.com/solutions/sap/docs/manage-host-errors [2] https://lore.kernel.org/kvm/20250109204929.1106563-1-jthoughton@google.com [3] https://lore.kernel.org/kvm/86pljbqqh0.wl-maz@kernel.org [4] https://lore.kernel.org/kvmarm/20250731205844.1346839-1-jiaqiyan@google.com [5] https://lore.kernel.org/kvm/20250604050902.3944054-1-jiaqiyan@google.com [6] https://lore.kernel.org/kvmarm/20250729182342.3281742-1-oliver.upton@linux.… [7] https://lore.kernel.org/kvm/aHFohmTb9qR_JG1E@linux.dev [8] https://lore.kernel.org/kvm/aHK-DPufhLy5Dtuk@linux.dev [9] https://lore.kernel.org/kvm/20250505161412.1926643-1-jiaqiyan@google.com Jiaqi Yan (3): KVM: arm64: VM exit to userspace to handle SEA KVM: selftests: Test for KVM_EXIT_ARM_SEA Documentation: kvm: new UAPI for handling SEA Documentation/virt/kvm/api.rst | 61 ++++ arch/arm64/include/asm/kvm_host.h | 2 + arch/arm64/kvm/arm.c | 5 + arch/arm64/kvm/mmu.c | 68 +++- include/uapi/linux/kvm.h | 10 + tools/arch/arm64/include/asm/esr.h | 2 + tools/testing/selftests/kvm/Makefile.kvm | 1 + .../testing/selftests/kvm/arm64/sea_to_user.c | 331 ++++++++++++++++++ tools/testing/selftests/kvm/lib/kvm_util.c | 1 + 9 files changed, 480 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/arm64/sea_to_user.c -- 2.51.0.760.g7b8bcc2412-goog

5 days, 9 hours

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[PATCH net v7 0/4] net: netpoll: fix memory leak and add comprehensive selftests

by Breno Leitao

Fix a memory leak in netpoll and introduce netconsole selftests that expose the issue when running with kmemleak detection enabled. This patchset includes a selftest for netpoll with multiple concurrent users (netconsole + bonding), which simulates the scenario from test[1] that originally demonstrated the issue allegedly fixed by commit efa95b01da18 ("netpoll: fix use after free") - a commit that is now being reverted. Sending this to "net" branch because this is a fix, and the selftest might help with the backports validation. Link: https://lore.kernel.org/lkml/96b940137a50e5c387687bb4f57de8b0435a653f.14048… [1] Signed-off-by: Breno Leitao <leitao(a)debian.org> --- Changes in v7: - Rebased on top of `net` - Link to v6: https://lore.kernel.org/r/20251002-netconsole_torture-v6-0-543bf52f6b46@deb… Changes in v6: - Expand the tests even more and some small fixups - Moved the test to bonding selftests - Link to v5: https://lore.kernel.org/r/20250918-netconsole_torture-v5-0-77e25e0a4eb6@deb… Changes in v5: - Set CONFIG_BONDING=m in selftests/drivers/net/config. - Link to v4: https://lore.kernel.org/r/20250917-netconsole_torture-v4-0-0a5b3b8f81ce@deb… Changes in v4: - Added an additional selftest to test multiple netpoll users in parallel - Link to v3: https://lore.kernel.org/r/20250905-netconsole_torture-v3-0-875c7febd316@deb… Changes in v3: - This patchset is a merge of the fix and the selftest together as recommended by Jakub. Changes in v2: - Reuse the netconsole creation from lib_netcons.sh. Thus, refactoring the create_dynamic_target() (Jakub) - Move the "wait" to after all the messages has been sent. - Link to v1: https://lore.kernel.org/r/20250902-netconsole_torture-v1-1-03c6066598e9@deb… --- Breno Leitao (4): net: netpoll: fix incorrect refcount handling causing incorrect cleanup selftest: netcons: refactor target creation selftest: netcons: create a torture test selftest: netcons: add test for netconsole over bonded interfaces net/core/netpoll.c | 7 +- tools/testing/selftests/drivers/net/Makefile | 1 + .../testing/selftests/drivers/net/bonding/Makefile | 2 + tools/testing/selftests/drivers/net/bonding/config | 4 + .../drivers/net/bonding/netcons_over_bonding.sh | 221 +++++++++++++++++++++ .../selftests/drivers/net/lib/sh/lib_netcons.sh | 188 ++++++++++++++++-- .../selftests/drivers/net/netcons_torture.sh | 127 ++++++++++++ 7 files changed, 530 insertions(+), 20 deletions(-) --- base-commit: 7ae421cf78bd795513ec3a7d7ef7ac9437693e23 change-id: 20250902-netconsole_torture-8fc23f0aca99 Best regards, -- Breno Leitao <leitao(a)debian.org>

5 days, 17 hours

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[PATCH v2 4/4] selftests/riscv: Add Zicbop prefetch test

by Yao Zihong

Add a new selftest under hwprobe/ to verify Zicbop extension behavior. The test checks: - That hwprobe correctly reports Zicbop presence and block size. - That prefetch instructions execute without exception on valid and NULL addresses when Zicbop is present. - That prefetch.{i,r,w} do not trigger SIGILL even when Zicbop is absent, since Zicbop instructions are defined as hints. The test is based on cbo.c but adapted for Zicbop prefetch instructions. Signed-off-by: Yao Zihong <zihong.plct(a)isrc.iscas.ac.cn> --- .../testing/selftests/riscv/hwprobe/Makefile | 5 +- .../selftests/riscv/hwprobe/prefetch.c | 236 ++++++++++++++++++ 2 files changed, 240 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/riscv/hwprobe/prefetch.c diff --git a/tools/testing/selftests/riscv/hwprobe/Makefile b/tools/testing/selftests/riscv/hwprobe/Makefile index cec81610a5f2..3c8b8ba7629c 100644 --- a/tools/testing/selftests/riscv/hwprobe/Makefile +++ b/tools/testing/selftests/riscv/hwprobe/Makefile @@ -4,7 +4,7 @@ CFLAGS += -I$(top_srcdir)/tools/include -TEST_GEN_PROGS := hwprobe cbo which-cpus +TEST_GEN_PROGS := hwprobe cbo which-cpus prefetch include ../../lib.mk @@ -16,3 +16,6 @@ $(OUTPUT)/cbo: cbo.c sys_hwprobe.S $(OUTPUT)/which-cpus: which-cpus.c sys_hwprobe.S $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^ + +$(OUTPUT)/prefetch: prefetch.c sys_hwprobe.S + $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^ diff --git a/tools/testing/selftests/riscv/hwprobe/prefetch.c b/tools/testing/selftests/riscv/hwprobe/prefetch.c new file mode 100644 index 000000000000..d9ea048325fb --- /dev/null +++ b/tools/testing/selftests/riscv/hwprobe/prefetch.c @@ -0,0 +1,236 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023 Ventana Micro Systems Inc. + * Copyright (c) 2025 PLCT Lab, ISCAS + * + * Based on tools/testing/selftests/riscv/hwprobe/cbo.c with modifications + * for Zicbop prefetch testing. + * + * Run with 'taskset -c <cpu-list> prefetch' to only execute hwprobe on a + * subset of cpus, as well as only executing the tests on those cpus. + */ +#define _GNU_SOURCE +#include <stdbool.h> +#include <stdint.h> +#include <string.h> +#include <sched.h> +#include <signal.h> +#include <assert.h> +#include <linux/compiler.h> +#include <linux/kernel.h> +#include <asm/ucontext.h> + +#include "hwprobe.h" +#include "../../kselftest.h" + +#define MK_PREFETCH(fn) \ + le32_bswap(0 << 25 | (uint32_t)(fn) << 20 | 10 << 15 | 6 << 12 | 0 << 7 | 19) + +static char mem[4096] __aligned(4096) = { [0 ... 4095] = 0xa5 }; + +static bool illegal; + +static void sigill_handler(int sig, siginfo_t *info, void *context) +{ + unsigned long *regs = (unsigned long *)&((ucontext_t *)context)->uc_mcontext; + uint32_t insn = *(uint32_t *)regs[0]; + + assert(insn == MK_PREFETCH(regs[11])); + + illegal = true; + regs[0] += 4; +} + +#define prefetch_insn(base, fn) \ +({ \ + asm volatile( \ + "mv a0, %0\n" \ + "li a1, %1\n" \ + ".4byte %2\n" \ + : : "r" (base), "i" (fn), "i" (MK_PREFETCH(fn)) : "a0", "a1", "memory");\ +}) + +static void prefetch_i(char *base) { prefetch_insn(base, 0); } + +static void prefetch_r(char *base) { prefetch_insn(base, 1); } + +static void prefetch_w(char *base) { prefetch_insn(base, 3); } + +static bool is_power_of_2(__u64 n) +{ + return n != 0 && (n & (n - 1)) == 0; +} + +static void test_no_zicbop(void *arg) +{ + // Zicbop prefetch.* are HINT instructions. + ksft_print_msg("Testing Zicbop instructions\n"); + + illegal = false; + prefetch_i(&mem[0]); + ksft_test_result(!illegal, "No prefetch.i\n"); + + illegal = false; + prefetch_r(&mem[0]); + ksft_test_result(!illegal, "No prefetch.r\n"); + + illegal = false; + prefetch_w(&mem[0]); + ksft_test_result(!illegal, "No prefetch.w\n"); +} + +static void test_zicbop(void *arg) +{ + struct riscv_hwprobe pair = { + .key = RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE, + }; + cpu_set_t *cpus = (cpu_set_t *)arg; + __u64 block_size; + long rc; + + rc = riscv_hwprobe(&pair, 1, sizeof(cpu_set_t), (unsigned long *)cpus, 0); + block_size = pair.value; + ksft_test_result(rc == 0 && pair.key == RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE && + is_power_of_2(block_size), "Zicbop block size\n"); + ksft_print_msg("Zicbop block size: %llu\n", block_size); + + illegal = false; + prefetch_i(&mem[0]); + prefetch_r(&mem[0]); + prefetch_w(&mem[0]); + ksft_test_result(!illegal, "Zicbop prefetch.* on valid address\n"); + + illegal = false; + prefetch_i(NULL); + prefetch_r(NULL); + prefetch_w(NULL); + ksft_test_result(!illegal, "Zicbop prefetch.* on NULL\n"); +} + +static void check_no_zicbop_cpus(cpu_set_t *cpus) +{ + struct riscv_hwprobe pair = { + .key = RISCV_HWPROBE_KEY_IMA_EXT_0, + }; + cpu_set_t one_cpu; + int i = 0, c = 0; + long rc; + + while (i++ < CPU_COUNT(cpus)) { + while (!CPU_ISSET(c, cpus)) + ++c; + + CPU_ZERO(&one_cpu); + CPU_SET(c, &one_cpu); + + rc = riscv_hwprobe(&pair, 1, sizeof(cpu_set_t), (unsigned long *)&one_cpu, 0); + assert(rc == 0 && pair.key == RISCV_HWPROBE_KEY_IMA_EXT_0); + + if (pair.value & RISCV_HWPROBE_EXT_ZICBOP) + ksft_exit_fail_msg("zicbop is only present on a subset of harts.\n" + "Use taskset to select a set of harts where zicbop\n" + "presence (present or not) is consistent for each hart\n"); + ++c; + } +} + +enum { + TEST_ZICBOP, + TEST_NO_ZICBOP, +}; + +enum { + HANDLER_SIGILL, + HANDLER_SIGSEGV, + HANDLER_SIGBUS, +}; + +static struct test_info { + bool enabled; + unsigned int nr_tests; + void (*test_fn)(void *arg); +} tests[] = { + [TEST_ZICBOP] = { .nr_tests = 3, test_zicbop }, + [TEST_NO_ZICBOP] = { .nr_tests = 3, test_no_zicbop }, +}; + +static struct sighandler_info { + const char *flag; + int sig; +} handlers[] = { + [HANDLER_SIGILL] = { .flag = "--sigill", .sig = SIGILL }, + [HANDLER_SIGSEGV] = { .flag = "--sigsegv", .sig = SIGSEGV }, + [HANDLER_SIGBUS] = { .flag = "--sigbus", .sig = SIGBUS }, +}; + +static bool search_flag(int argc, char **argv, const char *flag) +{ + int i; + + for (i = 1; i < argc; i++) { + if (!strcmp(argv[i], flag)) + return true; + } + return false; +} + +static void install_sigaction(int argc, char **argv) +{ + int i, rc; + struct sigaction act = { + .sa_sigaction = &sigill_handler, + .sa_flags = SA_SIGINFO, + }; + + for (i = 0; i < ARRAY_SIZE(handlers); ++i) { + if (search_flag(argc, argv, handlers[i].flag)) { + rc = sigaction(handlers[i].sig, &act, NULL); + assert(rc == 0); + } + } + + if (search_flag(argc, argv, handlers[HANDLER_SIGILL].flag)) + tests[TEST_NO_ZICBOP].enabled = true; +} + +int main(int argc, char **argv) +{ + struct riscv_hwprobe pair; + unsigned int plan = 0; + cpu_set_t cpus; + long rc; + int i; + + install_sigaction(argc, argv); + + rc = sched_getaffinity(0, sizeof(cpu_set_t), &cpus); + assert(rc == 0); + + ksft_print_header(); + + pair.key = RISCV_HWPROBE_KEY_IMA_EXT_0; + rc = riscv_hwprobe(&pair, 1, sizeof(cpu_set_t), (unsigned long *)&cpus, 0); + if (rc < 0) + ksft_exit_fail_msg("hwprobe() failed with %ld\n", rc); + assert(rc == 0 && pair.key == RISCV_HWPROBE_KEY_IMA_EXT_0); + + if (pair.value & RISCV_HWPROBE_EXT_ZICBOP) + tests[TEST_ZICBOP].enabled = true; + else + check_no_zicbop_cpus(&cpus); + + for (i = 0; i < ARRAY_SIZE(tests); ++i) + plan += tests[i].enabled ? tests[i].nr_tests : 0; + + if (plan == 0) + ksft_print_msg("No tests enabled.\n"); + else + ksft_set_plan(plan); + + for (i = 0; i < ARRAY_SIZE(tests); ++i) { + if (tests[i].enabled) + tests[i].test_fn(&cpus); + } + + ksft_finished(); +} -- 2.47.2

5 days, 17 hours

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[PATCH 0/2] KVM: x86: selftests: add L1TF exploit test

by Brendan Jackman

This has been tested on a Google Skylake platform. One potential issue with this test is that it fails (that is, the exploit succeeds) when using the conditional L1D flush, because the gadget is injected into the hypercall path which doesn't appear to include a flush. If this is unacceptable, we should discuss how to amend the test so that it can be used to evaluate the conditional flush logic as well. This would basically mean simulating some more complicated gadget where the "attacker" has found another way to steer the host kernel towards the target data, instead of just a simple hypercall. The reason this limitation is tolerable to me is my ulterior motive, i.e. because I am specifically interested in an end-to-end test for Address Space Isolation [0], which is abstracted from these details of the exploit. Based on kvm/next. [0] https://lore.kernel.org/all/20250924-b4-asi-page-alloc-v1-0-2d861768041f@go… Signed-off-by: Brendan Jackman <jackmanb(a)google.com> --- Alexandra Sandulescu (1): KVM: x86: selftests: add an L1TF exploit test Brendan Jackman (1): selftests: fix installing nested TEST_GEN_MODS_DIR tools/testing/selftests/kvm/Makefile.kvm | 7 + tools/testing/selftests/kvm/x86/l1tf_test.c | 633 +++++++++++++++++++++ tools/testing/selftests/kvm/x86/l1tf_test.sh | 10 + .../selftests/kvm/x86/test_modules/Makefile | 10 + .../kvm/x86/test_modules/l1tf_test_helper.c | 92 +++ tools/testing/selftests/lib.mk | 2 +- 6 files changed, 753 insertions(+), 1 deletion(-) --- base-commit: 6b36119b94d0b2bb8cea9d512017efafd461d6ac change-id: 20251013-l1tf-test-1bee540cefb4 Best regards, -- Brendan Jackman <jackmanb(a)google.com>

5 days, 19 hours

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[PATCH v19 00/27] riscv control-flow integrity for usermode

by Deepak Gupta

Basics and overview =================== Software with larger attack surfaces (e.g. network facing apps like databases, browsers or apps relying on browser runtimes) suffer from memory corruption issues which can be utilized by attackers to bend control flow of the program to eventually gain control (by making their payload executable). Attackers are able to perform such attacks by leveraging call-sites which rely on indirect calls or return sites which rely on obtaining return address from stack memory. To mitigate such attacks, risc-v extension zicfilp enforces that all indirect calls must land on a landing pad instruction `lpad` else cpu will raise software check exception (a new cpu exception cause code on riscv). Similarly for return flow, risc-v extension zicfiss extends architecture with - `sspush` instruction to push return address on a shadow stack - `sspopchk` instruction to pop return address from shadow stack and compare with input operand (i.e. return address on stack) - `sspopchk` to raise software check exception if comparision above was a mismatch - Protection mechanism using which shadow stack is not writeable via regular store instructions More information an details can be found at extensions github repo [1]. Equivalent to landing pad (zicfilp) on x86 is `ENDBRANCH` instruction in Intel CET [3] and branch target identification (BTI) [4] on arm. Similarly x86's Intel CET has shadow stack [5] and arm64 has guarded control stack (GCS) [6] which are very similar to risc-v's zicfiss shadow stack. x86 and arm64 support for user mode shadow stack is already in mainline. Kernel awareness for user control flow integrity ================================================ This series picks up Samuel Holland's envcfg changes [2] as well. So if those are being applied independently, they should be removed from this series. Enabling: In order to maintain compatibility and not break anything in user mode, kernel doesn't enable control flow integrity cpu extensions on binary by default. Instead exposes a prctl interface to enable, disable and lock the shadow stack or landing pad feature for a task. This allows userspace (loader) to enumerate if all objects in its address space are compiled with shadow stack and landing pad support and accordingly enable the feature. Additionally if a subsequent `dlopen` happens on a library, user mode can take a decision again to disable the feature (if incoming library is not compiled with support) OR terminate the task (if user mode policy is strict to have all objects in address space to be compiled with control flow integirty cpu feature). prctl to enable shadow stack results in allocating shadow stack from virtual memory and activating for user address space. x86 and arm64 are also following same direction due to similar reason(s). clone/fork: On clone and fork, cfi state for task is inherited by child. Shadow stack is part of virtual memory and is a writeable memory from kernel perspective (writeable via a restricted set of instructions aka shadow stack instructions) Thus kernel changes ensure that this memory is converted into read-only when fork/clone happens and COWed when fault is taken due to sspush, sspopchk or ssamoswap. In case `CLONE_VM` is specified and shadow stack is to be enabled, kernel will automatically allocate a shadow stack for that clone call. map_shadow_stack: x86 introduced `map_shadow_stack` system call to allow user space to explicitly map shadow stack memory in its address space. It is useful to allocate shadow for different contexts managed by a single thread (green threads or contexts) risc-v implements this system call as well. signal management: If shadow stack is enabled for a task, kernel performs an asynchronous control flow diversion to deliver the signal and eventually expects userspace to issue sigreturn so that original execution can be resumed. Even though resume context is prepared by kernel, it is in user space memory and is subject to memory corruption and corruption bugs can be utilized by attacker in this race window to perform arbitrary sigreturn and eventually bypass cfi mechanism. Another issue is how to ensure that cfi related state on sigcontext area is not trampled by legacy apps or apps compiled with old kernel headers. In order to mitigate control-flow hijacting, kernel prepares a token and place it on shadow stack before signal delivery and places address of token in sigcontext structure. During sigreturn, kernel obtains address of token from sigcontext struture, reads token from shadow stack and validates it and only then allow sigreturn to succeed. Compatiblity issue is solved by adopting dynamic sigcontext management introduced for vector extension. This series re-factor the code little bit to allow future sigcontext management easy (as proposed by Andy Chiu from SiFive) config and compilation: Introduce a new risc-v config option `CONFIG_RISCV_USER_CFI`. Selecting this config option picks the kernel support for user control flow integrity. This optin is presented only if toolchain has shadow stack and landing pad support. And is on purpose guarded by toolchain support. Reason being that eventually vDSO also needs to be compiled in with shadow stack and landing pad support. vDSO compile patches are not included as of now because landing pad labeling scheme is yet to settle for usermode runtime. To get more information on kernel interactions with respect to zicfilp and zicfiss, patch series adds documentation for `zicfilp` and `zicfiss` in following: Documentation/arch/riscv/zicfiss.rst Documentation/arch/riscv/zicfilp.rst How to test this series ======================= Toolchain --------- $ git clone git@github.com:sifive/riscv-gnu-toolchain.git -b cfi-dev $ riscv-gnu-toolchain/configure --prefix=<path-to-where-to-build> --with-arch=rv64gc_zicfilp_zicfiss --enable-linux --disable-gdb --with-extra-multilib-test="rv64gc_zicfilp_zicfiss-lp64d:-static" $ make -j$(nproc) Qemu ---- Get the lastest qemu $ cd qemu $ mkdir build $ cd build $ ../configure --target-list=riscv64-softmmu $ make -j$(nproc) Opensbi ------- $ git clone git@github.com:deepak0414/opensbi.git -b v6_cfi_spec_split_opensbi $ make CROSS_COMPILE=<your riscv toolchain> -j$(nproc) PLATFORM=generic Linux ----- Running defconfig is fine. CFI is enabled by default if the toolchain supports it. $ make ARCH=riscv CROSS_COMPILE=<path-to-cfi-riscv-gnu-toolchain>/build/bin/riscv64-unknown-linux-gnu- -j$(nproc) defconfig $ make ARCH=riscv CROSS_COMPILE=<path-to-cfi-riscv-gnu-toolchain>/build/bin/riscv64-unknown-linux-gnu- -j$(nproc) In case you're building your own rootfs using toolchain, please make sure you pick following patch to ensure that vDSO compiled with lpad and shadow stack. "arch/riscv: compile vdso with landing pad" Branch where above patch can be picked https://github.com/deepak0414/linux-riscv-cfi/tree/vdso_user_cfi_v6.12-rc1 Running ------- Modify your qemu command to have: -bios <path-to-cfi-opensbi>/build/platform/generic/firmware/fw_dynamic.bin -cpu rv64,zicfilp=true,zicfiss=true,zimop=true,zcmop=true vDSO related Opens (in the flux) ================================= I am listing these opens for laying out plan and what to expect in future patch sets. And of course for the sake of discussion. Shadow stack and landing pad enabling in vDSO ---------------------------------------------- vDSO must have shadow stack and landing pad support compiled in for task to have shadow stack and landing pad support. This patch series doesn't enable that (yet). Enabling shadow stack support in vDSO should be straight forward (intend to do that in next versions of patch set). Enabling landing pad support in vDSO requires some collaboration with toolchain folks to follow a single label scheme for all object binaries. This is necessary to ensure that all indirect call-sites are setting correct label and target landing pads are decorated with same label scheme. How many vDSOs --------------- Shadow stack instructions are carved out of zimop (may be operations) and if CPU doesn't implement zimop, they're illegal instructions. Kernel could be running on a CPU which may or may not implement zimop. And thus kernel will have to carry 2 different vDSOs and expose the appropriate one depending on whether CPU implements zimop or not. References ========== [1] - https://github.com/riscv/riscv-cfi [2] - https://lore.kernel.org/all/20240814081126.956287-1-samuel.holland@sifive.c… [3] - https://lwn.net/Articles/889475/ [4] - https://developer.arm.com/documentation/109576/0100/Branch-Target-Identific… [5] - https://www.intel.com/content/dam/develop/external/us/en/documents/catc17-i… [6] - https://lwn.net/Articles/940403/ To: Thomas Gleixner <tglx(a)linutronix.de> To: Ingo Molnar <mingo(a)redhat.com> To: Borislav Petkov <bp(a)alien8.de> To: Dave Hansen <dave.hansen(a)linux.intel.com> To: x86(a)kernel.org To: H. Peter Anvin <hpa(a)zytor.com> To: Andrew Morton <akpm(a)linux-foundation.org> To: Liam R. Howlett <Liam.Howlett(a)oracle.com> To: Vlastimil Babka <vbabka(a)suse.cz> To: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> To: Paul Walmsley <paul.walmsley(a)sifive.com> To: Palmer Dabbelt <palmer(a)dabbelt.com> To: Albert Ou <aou(a)eecs.berkeley.edu> To: Conor Dooley <conor(a)kernel.org> To: Rob Herring <robh(a)kernel.org> To: Krzysztof Kozlowski <krzk+dt(a)kernel.org> To: Arnd Bergmann <arnd(a)arndb.de> To: Christian Brauner <brauner(a)kernel.org> To: Peter Zijlstra <peterz(a)infradead.org> To: Oleg Nesterov <oleg(a)redhat.com> To: Eric Biederman <ebiederm(a)xmission.com> To: Kees Cook <kees(a)kernel.org> To: Jonathan Corbet <corbet(a)lwn.net> To: Shuah Khan <shuah(a)kernel.org> To: Jann Horn <jannh(a)google.com> To: Conor Dooley <conor+dt(a)kernel.org> To: Miguel Ojeda <ojeda(a)kernel.org> To: Alex Gaynor <alex.gaynor(a)gmail.com> To: Boqun Feng <boqun.feng(a)gmail.com> To: Gary Guo <gary(a)garyguo.net> To: Björn Roy Baron <bjorn3_gh(a)protonmail.com> To: Benno Lossin <benno.lossin(a)proton.me> To: Andreas Hindborg <a.hindborg(a)kernel.org> To: Alice Ryhl <aliceryhl(a)google.com> To: Trevor Gross <tmgross(a)umich.edu> Cc: linux-kernel(a)vger.kernel.org Cc: linux-fsdevel(a)vger.kernel.org Cc: linux-mm(a)kvack.org Cc: linux-riscv(a)lists.infradead.org Cc: devicetree(a)vger.kernel.org Cc: linux-arch(a)vger.kernel.org Cc: linux-doc(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Cc: alistair.francis(a)wdc.com Cc: richard.henderson(a)linaro.org Cc: jim.shu(a)sifive.com Cc: andybnac(a)gmail.com Cc: kito.cheng(a)sifive.com Cc: charlie(a)rivosinc.com Cc: atishp(a)rivosinc.com Cc: evan(a)rivosinc.com Cc: cleger(a)rivosinc.com Cc: alexghiti(a)rivosinc.com Cc: samitolvanen(a)google.com Cc: broonie(a)kernel.org Cc: rick.p.edgecombe(a)intel.com Cc: rust-for-linux(a)vger.kernel.org changelog --------- v19: - riscv_nousercfi was `int`. changed it to unsigned long. Thanks to Alex Ghiti for reporting it. It was a bug. - ELP is cleared on trap entry only when CONFIG_64BIT. - restore ssp back on return to usermode was being done before `riscv_v_context_nesting_end` on trap exit path. If kernel shadow stack were enabled this would result in kernel operating on user shadow stack and panic (as I found in my testing of kcfi patch series). So fixed that. v18: - rebased on 6.16-rc1 - uprobe handling clears ELP in sstatus image in pt_regs - vdso was missing shadow stack elf note for object files. added that. Additional asm file for vdso needed the elf marker flag. toolchain should complain if `-fcf-protection=full` and marker is missing for object generated from asm file. Asked toolchain folks to fix this. Although no reason to gate the merge on that. - Split up compile options for march and fcf-protection in vdso Makefile - CONFIG_RISCV_USER_CFI option is moved under "Kernel features" menu Added `arch/riscv/configs/hardening.config` fragment which selects CONFIG_RISCV_USER_CFI v17: - fixed warnings due to empty macros in usercfi.h (reported by alexg) - fixed prefixes in commit titles reported by alexg - took below uprobe with fcfi v2 patch from Zong Li and squashed it with "riscv/traps: Introduce software check exception and uprobe handling" https://lore.kernel.org/all/20250604093403.10916-1-zong.li@sifive.com/ v16: - If FWFT is not implemented or returns error for shadow stack activation, then no_usercfi is set to disable shadow stack. Although this should be picked up by extension validation and activation. Fixed this bug for zicfilp and zicfiss both. Thanks to Charlie Jenkins for reporting this. - If toolchain doesn't support cfi, cfi kselftest shouldn't build. Suggested by Charlie Jenkins. - Default for CONFIG_RISCV_USER_CFI is set to no. Charlie/Atish suggested to keep it off till we have more hardware availibility with RVA23 profile and zimop/zcmop implemented. Else this will start breaking people's workflow - Includes the fix if "!RV64 and !SBI" then definitions for FWFT in asm-offsets.c error. v15: - Toolchain has been updated to include `-fcf-protection` flag. This exists for x86 as well. Updated kernel patches to compile vDSO and selftest to compile with `fcf-protection=full` flag. - selecting CONFIG_RISCV_USERCFI selects CONFIG_RISCV_SBI. - Patch to enable shadow stack for kernel wasn't hidden behind CONFIG_RISCV_USERCFI and CONFIG_RISCV_SBI. fixed that. v14: - rebased on top of palmer/sbi-v3. Thus dropped clement's FWFT patches Updated RISCV_ISA_EXT_XXXX in hwcap and hwprobe constants. - Took Radim's suggestions on bitfields. - Placed cfi_state at the end of thread_info block so that current situation is not disturbed with respect to member fields of thread_info in single cacheline. v13: - cpu_supports_shadow_stack/cpu_supports_indirect_br_lp_instr uses riscv_has_extension_unlikely() - uses nops(count) to create nop slide - RISCV_ACQUIRE_BARRIER is not needed in `amo_user_shstk`. Removed it - changed ternaries to simply use implicit casting to convert to bool. - kernel command line allows to disable zicfilp and zicfiss independently. updated kernel-parameters.txt. - ptrace user abi for cfi uses bitmasks instead of bitfields. Added ptrace kselftest. - cosmetic and grammatical changes to documentation. v12: - It seems like I had accidently squashed arch agnostic indirect branch tracking prctl and riscv implementation of those prctls. Split them again. - set_shstk_status/set_indir_lp_status perform CSR writes only when CPU support is available. As suggested by Zong Li. - Some minor clean up in kselftests as suggested by Zong Li. v11: - patch "arch/riscv: compile vdso with landing pad" was unconditionally selecting `_zicfilp` for vDSO compile. fixed that. Changed `lpad 1` to to `lpad 0`. v10: - dropped "mm: helper `is_shadow_stack_vma` to check shadow stack vma". This patch is not that interesting to this patch series for risc-v. There are instances in arch directories where VM_SHADOW_STACK flag is anyways used. Dropping this patch to expedite merging in riscv tree. - Took suggestions from `Clement` on "riscv: zicfiss / zicfilp enumeration" to validate presence of cfi based on config. - Added a patch for vDSO to have `lpad 0`. I had omitted this earlier to make sure we add single vdso object with cfi enabled. But a vdso object with scheme of zero labeled landing pad is least common denominator and should work with all objects of zero labeled as well as function-signature labeled objects. v9: - rebased on master (39a803b754d5 fix braino in "9p: fix ->rename_sem exclusion") - dropped "mm: Introduce ARCH_HAS_USER_SHADOW_STACK" (master has it from arm64/gcs) - dropped "prctl: arch-agnostic prctl for shadow stack" (master has it from arm64/gcs) v8: - rebased on palmer/for-next - dropped samuel holland's `envcfg` context switch patches. they are in parlmer/for-next v7: - Removed "riscv/Kconfig: enable HAVE_EXIT_THREAD for riscv" Instead using `deactivate_mm` flow to clean up. see here for more context https://lore.kernel.org/all/20230908203655.543765-1-rick.p.edgecombe@intel.… - Changed the header include in `kselftest`. Hopefully this fixes compile issue faced by Zong Li at SiFive. - Cleaned up an orphaned change to `mm/mmap.c` in below patch "riscv/mm : ensure PROT_WRITE leads to VM_READ | VM_WRITE" - Lock interfaces for shadow stack and indirect branch tracking expect arg == 0 Any future evolution of this interface should accordingly define how arg should be setup. - `mm/map.c` has an instance of using `VM_SHADOW_STACK`. Fixed it to use helper `is_shadow_stack_vma`. - Link to v6: https://lore.kernel.org/r/20241008-v5_user_cfi_series-v6-0-60d9fe073f37@riv… v6: - Picked up Samuel Holland's changes as is with `envcfg` placed in `thread` instead of `thread_info` - fixed unaligned newline escapes in kselftest - cleaned up messages in kselftest and included test output in commit message - fixed a bug in clone path reported by Zong Li - fixed a build issue if CONFIG_RISCV_ISA_V is not selected (this was introduced due to re-factoring signal context management code) v5: - rebased on v6.12-rc1 - Fixed schema related issues in device tree file - Fixed some of the documentation related issues in zicfilp/ss.rst (style issues and added index) - added `SHADOW_STACK_SET_MARKER` so that implementation can define base of shadow stack. - Fixed warnings on definitions added in usercfi.h when CONFIG_RISCV_USER_CFI is not selected. - Adopted context header based signal handling as proposed by Andy Chiu - Added support for enabling kernel mode access to shadow stack using FWFT (https://github.com/riscv-non-isa/riscv-sbi-doc/blob/master/src/ext-firmware…) - Link to v5: https://lore.kernel.org/r/20241001-v5_user_cfi_series-v1-0-3ba65b6e550f@riv… (Note: I had an issue in my workflow due to which version number wasn't picked up correctly while sending out patches) v4: - rebased on 6.11-rc6 - envcfg: Converged with Samuel Holland's patches for envcfg management on per- thread basis. - vma_is_shadow_stack is renamed to is_vma_shadow_stack - picked up Mark Brown's `ARCH_HAS_USER_SHADOW_STACK` patch - signal context: using extended context management to maintain compatibility. - fixed `-Wmissing-prototypes` compiler warnings for prctl functions - Documentation fixes and amending typos. - Link to v4: https://lore.kernel.org/all/20240912231650.3740732-1-debug@rivosinc.com/ v3: - envcfg logic to pick up base envcfg had a bug where `ENVCFG_CBZE` could have been picked on per task basis, even though CPU didn't implement it. Fixed in this series. - dt-bindings As suggested, split into separate commit. fixed the messaging that spec is in public review - arch_is_shadow_stack change arch_is_shadow_stack changed to vma_is_shadow_stack - hwprobe zicfiss / zicfilp if present will get enumerated in hwprobe - selftests As suggested, added object and binary filenames to .gitignore Selftest binary anyways need to be compiled with cfi enabled compiler which will make sure that landing pad and shadow stack are enabled. Thus removed separate enable/disable tests. Cleaned up tests a bit. - Link to v3: https://lore.kernel.org/lkml/20240403234054.2020347-1-debug@rivosinc.com/ v2: - Using config `CONFIG_RISCV_USER_CFI`, kernel support for riscv control flow integrity for user mode programs can be compiled in the kernel. - Enabling of control flow integrity for user programs is left to user runtime - This patch series introduces arch agnostic `prctls` to enable shadow stack and indirect branch tracking. And implements them on riscv. --- Changes in v19: - Link to v18: https://lore.kernel.org/r/20250711-v5_user_cfi_series-v18-0-a8ee62f9f38e@ri… Changes in v18: - Link to v17: https://lore.kernel.org/r/20250604-v5_user_cfi_series-v17-0-4565c2cf869f@ri… Changes in v17: - Link to v16: https://lore.kernel.org/r/20250522-v5_user_cfi_series-v16-0-64f61a35eee7@ri… Changes in v16: - Link to v15: https://lore.kernel.org/r/20250502-v5_user_cfi_series-v15-0-914966471885@ri… Changes in v15: - changelog posted just below cover letter - Link to v14: https://lore.kernel.org/r/20250429-v5_user_cfi_series-v14-0-5239410d012a@ri… Changes in v14: - changelog posted just below cover letter - Link to v13: https://lore.kernel.org/r/20250424-v5_user_cfi_series-v13-0-971437de586a@ri… Changes in v13: - changelog posted just below cover letter - Link to v12: https://lore.kernel.org/r/20250314-v5_user_cfi_series-v12-0-e51202b53138@ri… Changes in v12: - changelog posted just below cover letter - Link to v11: https://lore.kernel.org/r/20250310-v5_user_cfi_series-v11-0-86b36cbfb910@ri… Changes in v11: - changelog posted just below cover letter - Link to v10: https://lore.kernel.org/r/20250210-v5_user_cfi_series-v10-0-163dcfa31c60@ri… --- Andy Chiu (1): riscv: signal: abstract header saving for setup_sigcontext Deepak Gupta (25): mm: VM_SHADOW_STACK definition for riscv dt-bindings: riscv: zicfilp and zicfiss in dt-bindings (extensions.yaml) riscv: zicfiss / zicfilp enumeration riscv: zicfiss / zicfilp extension csr and bit definitions riscv: usercfi state for task and save/restore of CSR_SSP on trap entry/exit riscv/mm : ensure PROT_WRITE leads to VM_READ | VM_WRITE riscv/mm: manufacture shadow stack pte riscv/mm: teach pte_mkwrite to manufacture shadow stack PTEs riscv/mm: write protect and shadow stack riscv/mm: Implement map_shadow_stack() syscall riscv/shstk: If needed allocate a new shadow stack on clone riscv: Implements arch agnostic shadow stack prctls prctl: arch-agnostic prctl for indirect branch tracking riscv: Implements arch agnostic indirect branch tracking prctls riscv/traps: Introduce software check exception and uprobe handling riscv/signal: save and restore of shadow stack for signal riscv/kernel: update __show_regs to print shadow stack register riscv/ptrace: riscv cfi status and state via ptrace and in core files riscv/hwprobe: zicfilp / zicfiss enumeration in hwprobe riscv: kernel command line option to opt out of user cfi riscv: enable kernel access to shadow stack memory via FWFT sbi call riscv: create a config for shadow stack and landing pad instr support riscv: Documentation for landing pad / indirect branch tracking riscv: Documentation for shadow stack on riscv kselftest/riscv: kselftest for user mode cfi Jim Shu (1): arch/riscv: compile vdso with landing pad and shadow stack note Documentation/admin-guide/kernel-parameters.txt | 8 + Documentation/arch/riscv/index.rst | 2 + Documentation/arch/riscv/zicfilp.rst | 115 +++++ Documentation/arch/riscv/zicfiss.rst | 179 +++++++ .../devicetree/bindings/riscv/extensions.yaml | 14 + arch/riscv/Kconfig | 21 + arch/riscv/Makefile | 5 +- arch/riscv/configs/hardening.config | 4 + arch/riscv/include/asm/asm-prototypes.h | 1 + arch/riscv/include/asm/assembler.h | 44 ++ arch/riscv/include/asm/cpufeature.h | 12 + arch/riscv/include/asm/csr.h | 16 + arch/riscv/include/asm/entry-common.h | 2 + arch/riscv/include/asm/hwcap.h | 2 + arch/riscv/include/asm/mman.h | 26 + arch/riscv/include/asm/mmu_context.h | 7 + arch/riscv/include/asm/pgtable.h | 30 +- arch/riscv/include/asm/processor.h | 1 + arch/riscv/include/asm/thread_info.h | 3 + arch/riscv/include/asm/usercfi.h | 95 ++++ arch/riscv/include/asm/vector.h | 3 + arch/riscv/include/uapi/asm/hwprobe.h | 2 + arch/riscv/include/uapi/asm/ptrace.h | 34 ++ arch/riscv/include/uapi/asm/sigcontext.h | 1 + arch/riscv/kernel/Makefile | 1 + arch/riscv/kernel/asm-offsets.c | 10 + arch/riscv/kernel/cpufeature.c | 27 + arch/riscv/kernel/entry.S | 38 ++ arch/riscv/kernel/head.S | 27 + arch/riscv/kernel/process.c | 27 +- arch/riscv/kernel/ptrace.c | 95 ++++ arch/riscv/kernel/signal.c | 148 +++++- arch/riscv/kernel/sys_hwprobe.c | 2 + arch/riscv/kernel/sys_riscv.c | 10 + arch/riscv/kernel/traps.c | 54 ++ arch/riscv/kernel/usercfi.c | 545 +++++++++++++++++++++ arch/riscv/kernel/vdso/Makefile | 11 +- arch/riscv/kernel/vdso/flush_icache.S | 4 + arch/riscv/kernel/vdso/getcpu.S | 4 + arch/riscv/kernel/vdso/rt_sigreturn.S | 4 + arch/riscv/kernel/vdso/sys_hwprobe.S | 4 + arch/riscv/kernel/vdso/vgetrandom-chacha.S | 5 +- arch/riscv/mm/init.c | 2 +- arch/riscv/mm/pgtable.c | 16 + include/linux/cpu.h | 4 + include/linux/mm.h | 7 + include/uapi/linux/elf.h | 2 + include/uapi/linux/prctl.h | 27 + kernel/sys.c | 30 ++ tools/testing/selftests/riscv/Makefile | 2 +- tools/testing/selftests/riscv/cfi/.gitignore | 3 + tools/testing/selftests/riscv/cfi/Makefile | 16 + tools/testing/selftests/riscv/cfi/cfi_rv_test.h | 82 ++++ tools/testing/selftests/riscv/cfi/riscv_cfi_test.c | 173 +++++++ tools/testing/selftests/riscv/cfi/shadowstack.c | 385 +++++++++++++++ tools/testing/selftests/riscv/cfi/shadowstack.h | 27 + 56 files changed, 2389 insertions(+), 30 deletions(-) --- base-commit: a2a05801de77ca5122fc34e3eb84d6359ef70389 change-id: 20240930-v5_user_cfi_series-3dc332f8f5b2 -- - debug

5 days, 20 hours

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[PATCH RESEND] selftests/cachestat: add tmpshmcstat file to .gitignore

by Madhur Kumar

Add the tmpshmcstat file to .gitignore to avoid accidentally staging the build artifact Signed-off-by: Madhur Kumar <madhurkumar004(a)gmail.com> --- tools/testing/selftests/cachestat/.gitignore | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/cachestat/.gitignore b/tools/testing/selftests/cachestat/.gitignore index d6c30b43a4bb..abbb13b6e96b 100644 --- a/tools/testing/selftests/cachestat/.gitignore +++ b/tools/testing/selftests/cachestat/.gitignore @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only test_cachestat +tmpshmcstat -- 2.51.0

6 days, 1 hour

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[PATCH net v3] selftests: drv-net: update remaining Python init files

by Stanislav Fomichev

From: Jakub Kicinski <kuba(a)kernel.org> Convert remaining __init__ files similar to what we did in commit b615879dbfea ("selftests: drv-net: make linters happy with our imports") Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Stanislav Fomichev <sdf(a)fomichev.me> --- v3: - add my SoB (sending on behalf of Jakub) v2: - remove tool from imports in driver __init__s it's not actually used v1: https://lore.kernel.org/20251007144326.1763309-1-kuba@kernel.org CC: shuah(a)kernel.org CC: willemb(a)google.com CC: daniel.zahka(a)gmail.com CC: linux-kselftest(a)vger.kernel.org --- .../drivers/net/hw/lib/py/__init__.py | 40 ++++++++++++++----- .../selftests/drivers/net/lib/py/__init__.py | 4 +- .../testing/selftests/net/lib/py/__init__.py | 29 ++++++++++++-- 3 files changed, 57 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py index 0ceb297e7757..fb010a48a5a1 100644 --- a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py @@ -1,5 +1,13 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Driver test environment (hardware-only tests). +NetDrvEnv and NetDrvEpEnv are the main environment classes. +Former is for local host only tests, latter creates / connects +to a remote endpoint. See NIPA wiki for more information about +running and writing driver tests. +""" + import sys from pathlib import Path @@ -8,26 +16,36 @@ KSFT_DIR = (Path(__file__).parent / "../../../../..").resolve() try: sys.path.append(KSFT_DIR.as_posix()) - from net.lib.py import * - from drivers.net.lib.py import * - # Import one by one to avoid pylint false positives + from net.lib.py import NetNS, NetNSEnter, NetdevSimDev from net.lib.py import EthtoolFamily, NetdevFamily, NetshaperFamily, \ NlError, RtnlFamily, DevlinkFamily, PSPFamily from net.lib.py import CmdExitFailure - from net.lib.py import bkg, cmd, defer, ethtool, fd_read_timeout, ip, \ - rand_port, tool, wait_port_listen - from net.lib.py import fd_read_timeout + from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ + fd_read_timeout, ip, rand_port, wait_port_listen, wait_file from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ ksft_setup from net.lib.py import ksft_eq, ksft_ge, ksft_in, ksft_is, ksft_lt, \ ksft_ne, ksft_not_in, ksft_raises, ksft_true, ksft_gt, ksft_not_none - from net.lib.py import NetNSEnter - from drivers.net.lib.py import GenerateTraffic + from drivers.net.lib.py import GenerateTraffic, Remote from drivers.net.lib.py import NetDrvEnv, NetDrvEpEnv + + __all__ = ["NetNS", "NetNSEnter", "NetdevSimDev", + "EthtoolFamily", "NetdevFamily", "NetshaperFamily", + "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", + "CmdExitFailure", + "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", + "fd_read_timeout", "ip", "rand_port", + "wait_port_listen", "wait_file", + "KsftSkipEx", "KsftFailEx", "KsftXfailEx", + "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", + "ksft_setup", + "ksft_eq", "ksft_ge", "ksft_in", "ksft_is", "ksft_lt", + "ksft_ne", "ksft_not_in", "ksft_raises", "ksft_true", "ksft_gt", + "ksft_not_none", "ksft_not_none", + "NetDrvEnv", "NetDrvEpEnv", "GenerateTraffic", "Remote"] except ModuleNotFoundError as e: - ksft_pr("Failed importing `net` library from kernel sources") - ksft_pr(str(e)) - ktap_result(True, comment="SKIP") + print("Failed importing `net` library from kernel sources") + print(str(e)) sys.exit(4) diff --git a/tools/testing/selftests/drivers/net/lib/py/__init__.py b/tools/testing/selftests/drivers/net/lib/py/__init__.py index e6c070f32f51..b0c6300150fb 100644 --- a/tools/testing/selftests/drivers/net/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/lib/py/__init__.py @@ -22,7 +22,7 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() NlError, RtnlFamily, DevlinkFamily, PSPFamily from net.lib.py import CmdExitFailure from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ - fd_read_timeout, ip, rand_port, tool, wait_port_listen, wait_file + fd_read_timeout, ip, rand_port, wait_port_listen, wait_file from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ ksft_setup @@ -34,7 +34,7 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", "CmdExitFailure", "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", - "fd_read_timeout", "ip", "rand_port", "tool", + "fd_read_timeout", "ip", "rand_port", "wait_port_listen", "wait_file", "KsftSkipEx", "KsftFailEx", "KsftXfailEx", "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", diff --git a/tools/testing/selftests/net/lib/py/__init__.py b/tools/testing/selftests/net/lib/py/__init__.py index 997b85cc216a..97b7cf2b20eb 100644 --- a/tools/testing/selftests/net/lib/py/__init__.py +++ b/tools/testing/selftests/net/lib/py/__init__.py @@ -1,9 +1,32 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Python selftest helpers for netdev. +""" + from .consts import KSRC -from .ksft import * +from .ksft import KsftFailEx, KsftSkipEx, KsftXfailEx, ksft_pr, ksft_eq, \ + ksft_ne, ksft_true, ksft_not_none, ksft_in, ksft_not_in, ksft_is, \ + ksft_ge, ksft_gt, ksft_lt, ksft_raises, ksft_busy_wait, \ + ktap_result, ksft_disruptive, ksft_setup, ksft_run, ksft_exit from .netns import NetNS, NetNSEnter -from .nsim import * -from .utils import * +from .nsim import NetdevSim, NetdevSimDev +from .utils import CmdExitFailure, fd_read_timeout, cmd, bkg, defer, \ + bpftool, ip, ethtool, bpftrace, rand_port, wait_port_listen, wait_file from .ynl import NlError, YnlFamily, EthtoolFamily, NetdevFamily, RtnlFamily, RtnlAddrFamily from .ynl import NetshaperFamily, DevlinkFamily, PSPFamily + +__all__ = ["KSRC", + "KsftFailEx", "KsftSkipEx", "KsftXfailEx", "ksft_pr", "ksft_eq", + "ksft_ne", "ksft_true", "ksft_not_none", "ksft_in", "ksft_not_in", + "ksft_is", "ksft_ge", "ksft_gt", "ksft_lt", "ksft_raises", + "ksft_busy_wait", "ktap_result", "ksft_disruptive", "ksft_setup", + "ksft_run", "ksft_exit", + "NetNS", "NetNSEnter", + "CmdExitFailure", "fd_read_timeout", "cmd", "bkg", "defer", + "bpftool", "ip", "ethtool", "bpftrace", "rand_port", + "wait_port_listen", "wait_file", + "NetdevSim", "NetdevSimDev", + "NetshaperFamily", "DevlinkFamily", "PSPFamily", "NlError", + "YnlFamily", "EthtoolFamily", "NetdevFamily", "RtnlFamily", + "RtnlAddrFamily"] -- 2.51.0

6 days, 17 hours

3
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[PATCH v3 0/5] tracing: fprobe: list-style filters,

by Ryan Chung

This series aims to extend fprobe with list-style filters and a clear entry/exist qualifier. Users can now specify a comma-separated symbol list with ! exclusions, and use a spec-level suffix to select probe type: - funcA*, !funcAB, funcC -> entry probes - funcA*, !funcAB, funcC:entry -> explicit entry - funcA*, !funcAB, funcC:exit -> return/exit across the whole list For compatibility, %return remains supported for single, literal symbols. When a list or wildcard is used, an explicit [GROUP/EVENT is required and autogeneration is disabled. Autogen names are kept for single-symbol specs, with wildcard sanitization. For list/wildcard forms we set ctx->funcname = NULL so BTF lookups are not attempted. The series moves parsing to the parse path, documents the new syntax, and adds selftests that accept valid list cases and reject empty tokens, stray commas, and %return mixed with lists or wildcards. Selftests also verify enable/disable flow and that entry+exit on the same set do not double-count attached functions. Help wanted: This is my first time contributing ftrace selftests. I would appreciate comments and recommendations on test structure and coverage. Basic coverage is included, but this likely needs broader testing across architectures. Feedback and additional test ideas are welcome. Changes since v2: - Introduce spec-level: :entry/:exit; reject %return with lists/wildcards - Require explict [GROUP/]EVENT for list/wildcard; keep autogen only for single literal. - Sanitize autogen names for single-symbol wildcards - Set ctx->funcname = NULL for list/wildcard to bypass BTF - Move list parsing out of __register_trace_fprobe() and into the parse path - Update docs and tracefs README and add dynevent selftests for accept/reject and enable/disable flow Link: https://lore.kernel.org/lkml/20250904103219.f4937968362bfff1ecd3f004@kernel… Ryan Chung (5): docs: tracing: fprobe: document list filters and :entry/:exit tracing: fprobe: require explicit [GROUP/]EVENT for list/wildcard tracing: fprobe: support comma-separated symbols and :entry/:exit selftests/ftrace: dynevent: add reject cases for list/:entry/:exit selftests/ftrace: dynevent: add reject cases Documentation/trace/fprobetrace.rst | 27 +- kernel/trace/trace.c | 3 +- kernel/trace/trace_fprobe.c | 247 ++++++++++++++---- .../test.d/dynevent/add_remove_fprobe.tc | 121 +++++++++ .../test.d/dynevent/fprobe_syntax_errors.tc | 13 + 5 files changed, 349 insertions(+), 62 deletions(-) -- 2.43.0

6 days, 20 hours

3
15
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[PATCH bpf v3 0/2] bpf: Avoid RCU context warning when unpinning htab with internal structs

by KaFai Wan

This small patchset is about avoid RCU context warning when unpinning htab with internal structs (timer, workqueue, or task_work). v3: - fix nit (Yonghong Song) - add Acked-by: Yonghong Song <yonghong.song(a)linux.dev> v2: - rename bpf_free_inode() to bpf_destroy_inode() (Andrii) https://lore.kernel.org/all/20251007012235.755853-1-kafai.wan@linux.dev/ v1: https://lore.kernel.org/all/20251003084528.502518-1-kafai.wan@linux.dev/ --- KaFai Wan (2): bpf: Avoid RCU context warning when unpinning htab with internal structs selftests/bpf: Add test for unpinning htab with internal timer struct kernel/bpf/inode.c | 4 +-- .../selftests/bpf/prog_tests/pinning_htab.c | 36 +++++++++++++++++++ .../selftests/bpf/progs/test_pinning_htab.c | 25 +++++++++++++ 3 files changed, 63 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/pinning_htab.c create mode 100644 tools/testing/selftests/bpf/progs/test_pinning_htab.c -- 2.43.0

1 week

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5
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[PATCH v7 00/12] Direct Map Removal Support for guest_memfd

by Patrick Roy

From: Patrick Roy <roypat(a)amazon.co.uk> [ based on kvm/next ] Unmapping virtual machine guest memory from the host kernel's direct map is a successful mitigation against Spectre-style transient execution issues: If the kernel page tables do not contain entries pointing to guest memory, then any attempted speculative read through the direct map will necessarily be blocked by the MMU before any observable microarchitectural side-effects happen. This means that Spectre-gadgets and similar cannot be used to target virtual machine memory. Roughly 60% of speculative execution issues fall into this category [1, Table 1]. This patch series extends guest_memfd with the ability to remove its memory from the host kernel's direct map, to be able to attain the above protection for KVM guests running inside guest_memfd. Additionally, a Firecracker branch with support for these VMs can be found on GitHub [2]. For more details, please refer to the v5 cover letter [v5]. No substantial changes in design have taken place since. === Changes Since v6 === - Drop patch for passing struct address_space to ->free_folio(), due to possible races with freeing of the address_space. (Hugh) - Stop using PG_uptodate / gmem preparedness tracking to keep track of direct map state. Instead, use the lowest bit of folio->private. (Mike, David) - Do direct map removal when establishing mapping of gmem folio instead of at allocation time, due to impossibility of handling direct map removal errors in kvm_gmem_populate(). (Patrick) - Do TLB flushes after direct map removal, and provide a module parameter to opt out from them, and a new patch to export flush_tlb_kernel_range() to KVM. (Will) [1]: https://download.vusec.net/papers/quarantine_raid23.pdf [2]: https://github.com/firecracker-microvm/firecracker/tree/feature/secret-hidi… [RFCv1]: https://lore.kernel.org/kvm/20240709132041.3625501-1-roypat@amazon.co.uk/ [RFCv2]: https://lore.kernel.org/kvm/20240910163038.1298452-1-roypat@amazon.co.uk/ [RFCv3]: https://lore.kernel.org/kvm/20241030134912.515725-1-roypat@amazon.co.uk/ [v4]: https://lore.kernel.org/kvm/20250221160728.1584559-1-roypat@amazon.co.uk/ [v5]: https://lore.kernel.org/kvm/20250828093902.2719-1-roypat@amazon.co.uk/ [v6]: https://lore.kernel.org/kvm/20250912091708.17502-1-roypat@amazon.co.uk/ Patrick Roy (12): arch: export set_direct_map_valid_noflush to KVM module x86/tlb: export flush_tlb_kernel_range to KVM module mm: introduce AS_NO_DIRECT_MAP KVM: guest_memfd: Add stub for kvm_arch_gmem_invalidate KVM: guest_memfd: Add flag to remove from direct map KVM: guest_memfd: add module param for disabling TLB flushing KVM: selftests: load elf via bounce buffer KVM: selftests: set KVM_MEM_GUEST_MEMFD in vm_mem_add() if guest_memfd != -1 KVM: selftests: Add guest_memfd based vm_mem_backing_src_types KVM: selftests: cover GUEST_MEMFD_FLAG_NO_DIRECT_MAP in existing selftests KVM: selftests: stuff vm_mem_backing_src_type into vm_shape KVM: selftests: Test guest execution from direct map removed gmem Documentation/virt/kvm/api.rst | 5 ++ arch/arm64/include/asm/kvm_host.h | 12 ++++ arch/arm64/mm/pageattr.c | 1 + arch/loongarch/mm/pageattr.c | 1 + arch/riscv/mm/pageattr.c | 1 + arch/s390/mm/pageattr.c | 1 + arch/x86/include/asm/tlbflush.h | 3 +- arch/x86/mm/pat/set_memory.c | 1 + arch/x86/mm/tlb.c | 1 + include/linux/kvm_host.h | 9 +++ include/linux/pagemap.h | 16 +++++ include/linux/secretmem.h | 18 ----- include/uapi/linux/kvm.h | 2 + lib/buildid.c | 4 +- mm/gup.c | 19 ++---- mm/mlock.c | 2 +- mm/secretmem.c | 8 +-- .../testing/selftests/kvm/guest_memfd_test.c | 2 + .../testing/selftests/kvm/include/kvm_util.h | 37 ++++++++--- .../testing/selftests/kvm/include/test_util.h | 8 +++ tools/testing/selftests/kvm/lib/elf.c | 8 +-- tools/testing/selftests/kvm/lib/io.c | 23 +++++++ tools/testing/selftests/kvm/lib/kvm_util.c | 61 +++++++++-------- tools/testing/selftests/kvm/lib/test_util.c | 8 +++ tools/testing/selftests/kvm/lib/x86/sev.c | 1 + .../selftests/kvm/pre_fault_memory_test.c | 1 + .../selftests/kvm/set_memory_region_test.c | 50 ++++++++++++-- .../kvm/x86/private_mem_conversions_test.c | 7 +- virt/kvm/guest_memfd.c | 66 +++++++++++++++++-- virt/kvm/kvm_main.c | 8 +++ 30 files changed, 290 insertions(+), 94 deletions(-) base-commit: a6ad54137af92535cfe32e19e5f3bc1bb7dbd383 -- 2.51.0

1 week

6
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[PATCH net-next] selftests: net: check jq command is supported

by Wang Liang

The jq command is used in vlan_bridge_binding.sh, if it is not supported, the test will spam the following log. # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # TEST: Test bridge_binding on->off when lower down [FAIL] # Got operstate of , expected 0 The rtnetlink.sh has the same problem. It makes sense to check if jq is installed before running these tests. After this patch, the vlan_bridge_binding.sh skipped if jq is not supported: # timeout set to 3600 # selftests: net: vlan_bridge_binding.sh # TEST: jq not installed [SKIP] Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- tools/testing/selftests/net/rtnetlink.sh | 2 ++ tools/testing/selftests/net/vlan_bridge_binding.sh | 2 ++ 2 files changed, 4 insertions(+) diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh index dbf77513f617..163a084d525d 100755 --- a/tools/testing/selftests/net/rtnetlink.sh +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -1466,6 +1466,8 @@ usage: ${0##*/} OPTS EOF } +require_command jq + #check for needed privileges if [ "$(id -u)" -ne 0 ];then end_test "SKIP: Need root privileges" diff --git a/tools/testing/selftests/net/vlan_bridge_binding.sh b/tools/testing/selftests/net/vlan_bridge_binding.sh index db481af9b6b3..e8c02c64e03a 100755 --- a/tools/testing/selftests/net/vlan_bridge_binding.sh +++ b/tools/testing/selftests/net/vlan_bridge_binding.sh @@ -249,6 +249,8 @@ test_binding_toggle_off_when_upper_down() do_test_binding_off : "on->off when upper down" } +require_command jq + trap defer_scopes_cleanup EXIT setup_prepare tests_run -- 2.34.1

1 week, 1 day

3
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Official Notification from Mr. Shri Rajesh Kumar, from the Indian Cyber Crime

by Mr.Shri Rajesh

Attention Please find attached an important document issued by Mr. Shri Rajesh Kumar, Chief Executive Officer of the Indian Cyber Crime Coordination Centre (I4C), for your review and reference. Kindly review the contents carefully and respond immediately. Best regards, Mr. Shri Rajesh Kumar, Chief Executive Officer Indian Cyber Crime Coordination Centre (I4C)

1 week, 1 day

1
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[PATCH v1] selftests: cachestat: Fix warning on declaration under label

by Sidharth Seela

Fix warning caused from declaration under a case label. The proper way is to declare variable at the beginning of the function. The warning came from running clang using LLVM=1; and is as follows: -- -test_cachestat.c:260:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 260 | char *map = mmap(NULL, filesize, PROT_READ | PROT_WRITE, | Signed-off-by: Sidharth Seela <sidharthseela(a)gmail.com> --- diff --git a/tools/testing/selftests/cachestat/test_cachestat.c b/tools/testing/selftests/cachestat/test_cachestat.c index c952640f163b..0305e736f2b8 100644 --- a/tools/testing/selftests/cachestat/test_cachestat.c +++ b/tools/testing/selftests/cachestat/test_cachestat.c @@ -226,7 +226,7 @@ bool run_cachestat_test(enum file_type type) int syscall_ret; size_t compute_len = PS * 512; struct cachestat_range cs_range = { PS, compute_len }; - char *filename = "tmpshmcstat"; + char *filename = "tmpshmcstat", *map; struct cachestat cs; bool ret = true; int fd; @@ -257,7 +257,7 @@ bool run_cachestat_test(enum file_type type) } break; case FILE_MMAP: - char *map = mmap(NULL, filesize, PROT_READ | PROT_WRITE, + map = mmap(NULL, filesize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); if (map == MAP_FAILED) { -- 2.47.3

1 week, 1 day

5
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[PATCH] filelock: add .gitignore

by Kriish Sharma

Add a .gitignore to tools/testing/selftests/filelock to ignore build artifacts. This prevents accidental commits of object files or binaries. Signed-off-by: Kriish Sharma <kriish.sharma2006(a)gmail.com> --- tools/testing/selftests/filelock/.gitignore | 2 ++ 1 file changed, 2 insertions(+) create mode 100644 tools/testing/selftests/filelock/.gitignore diff --git a/tools/testing/selftests/filelock/.gitignore b/tools/testing/selftests/filelock/.gitignore new file mode 100644 index 000000000000..410842f05f90 --- /dev/null +++ b/tools/testing/selftests/filelock/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +ofdlocks \ No newline at end of file -- 2.34.1

1 week, 1 day

1
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[PATCH bpf-next v4 0/2] Add kfuncs bpf_strcasestr and bpf_strncasestr

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Add kfuncs bpf_strcasestr and bpf_strncasestr, which are extensions of bpf_strstr and bpf_strnstr, suitable for more scenarios. Rong Tao (2): bpf: add bpf_strcasestr,bpf_strncasestr kfuncs selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs kernel/bpf/helpers.c | 98 +++++++++++++++---- .../selftests/bpf/prog_tests/string_kfuncs.c | 2 + .../bpf/progs/string_kfuncs_failure1.c | 12 +++ .../bpf/progs/string_kfuncs_failure2.c | 2 + .../bpf/progs/string_kfuncs_success.c | 10 ++ 5 files changed, 103 insertions(+), 21 deletions(-) --- v4: Fix wrong comment. v3: keep __bpf_strnstr() static and compress some tests. https://lore.kernel.org/lkml/tencent_6E59062E4249590597452A06AFCDA3098808@q… v2: remove extra __bpf_kfunc and fix comment of bpf_strncasestr(). https://lore.kernel.org/all/tencent_6D228941AB904DD6E1E58C8ACDEBEC280C06@qq… v1: https://lore.kernel.org/all/tencent_8AF4D15B4475031E2185ACDE4B1495995707@qq… -- 2.51.0

1 week, 1 day

2
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[PATCH 0/2] KVM: arm64: selftests: Cover ID_AA64ISAR3_EL1 in set_id_regs

by Mark Brown

The set_id_regs selftest lacks coverag for ID_AA64ISR3_EL1 which has several features exposed to KVM guests in it. Add coverage, and while we're here adjust the test to improve maintainability a bit. The test will fail without the recently applied change adding FEAT_LSFE: https://lore.kernel.org/r/175829303126.1764550.939188785634158487.b4-ty@ker… Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Mark Brown (2): KVM: arm64: selftests: Remove a duplicate register listing in set_id_regs KVM: arm64: selftests: Cover ID_AA64ISAR3_EL1 in set_id_regs tools/testing/selftests/kvm/arm64/set_id_regs.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) --- base-commit: 5db15c998c390efbe5c82f6cda77cb896a3a6a3e change-id: 20250919-kvm-arm64-id-aa64isar3-el1-f0bd8ab3d36b Best regards, -- Mark Brown <broonie(a)kernel.org>

1 week, 1 day

4
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[PATCH v4 net-next 00/13] AccECN protocol case handling series

by chia-yu.chang＠nokia-bell-labs.com

From: Chia-Yu Chang <chia-yu.chang(a)nokia-bell-labs.com> Hello, Plesae find the v4 AccECN case handling patch series, which covers several excpetional case handling of Accurate ECN spec (RFC9768), adds new identifiers to be used by CC modules, adds ecn_delta into rate_sample, and keeps the ACE counter for computation, etc. This patch series is part of the full AccECN patch series, which is available at https://github.com/L4STeam/linux-net-next/commits/upstream_l4steam/ Best regards, Chia-Yu --- v4: - Add previous #13 in v2 back after dicussion with the RFC author. - Add TCP_ACCECN_OPTION_PERSIST to tcp_ecn_option sysctl to ignore AccECN fallback policy on sending AccECN option. v3: - Add additional min() check if pkts_acked_ewma is not initialized in #1. - Change TCP_CONG_WANTS_ECT_1 into individual flag add helper function INET_ECN_xmit_wants_ect_1() in #3. - Add empty line between variable declarations and code in #4. - Update commit message to fix old AccECN commits in #5. - Remove unnecessary brackets in #10. - Move patch #3 in v2 to a later Prague patch serise and remove patch #13 in v2. --- Chia-Yu Chang (11): tcp: L4S ECT(1) identifier and NEEDS_ACCECN for CC modules tcp: disable RFC3168 fallback identifier for CC modules tcp: accecn: handle unexpected AccECN negotiation feedback tcp: accecn: retransmit downgraded SYN in AccECN negotiation tcp: move increment of num_retrans tcp: accecn: retransmit SYN/ACK without AccECN option or non-AccECN SYN/ACK tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion tcp: accecn: fallback outgoing half link to non-AccECN tcp: accecn: verify ACE counter in 1st ACK after AccECN negotiation tcp: accecn: detect loss ACK w/ AccECN option and add TCP_ACCECN_OPTION_PERSIST tcp: accecn: enable AccECN Ilpo Järvinen (2): tcp: try to avoid safer when ACKs are thinned gro: flushing when CWR is set negatively affects AccECN Documentation/networking/ip-sysctl.rst | 2 + .../networking/net_cachelines/tcp_sock.rst | 1 + include/linux/tcp.h | 4 +- include/net/inet_ecn.h | 20 +++- include/net/tcp.h | 32 ++++++- include/net/tcp_ecn.h | 92 ++++++++++++++----- net/ipv4/sysctl_net_ipv4.c | 4 +- net/ipv4/tcp.c | 2 + net/ipv4/tcp_cong.c | 10 +- net/ipv4/tcp_input.c | 58 ++++++++++-- net/ipv4/tcp_minisocks.c | 40 +++++--- net/ipv4/tcp_offload.c | 3 +- net/ipv4/tcp_output.c | 42 ++++++--- 13 files changed, 240 insertions(+), 70 deletions(-) -- 2.34.1

1 week, 1 day

3
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[PATCH] selftests/run_kselftest.sh: Add --error-on-fail flag

by Brendan Jackman

Parsing KTAP is quite an inconvenience, but most of the time the thing you really want to know is "did anything fail"? Let's give the user the ability to get this information without needing to parse anything. Because of the use of subshells and namespaces, this needs to be communicated via a file. Just write arbitrary data into the file and treat non-emppty content as a signal that something failed. Signed-off-by: Brendan Jackman <jackmanb(a)google.com> --- tools/testing/selftests/kselftest/runner.sh | 14 ++++++++++---- tools/testing/selftests/run_kselftest.sh | 14 ++++++++++++++ 2 files changed, 24 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh index 2c3c58e65a419f5ee8d7dc51a37671237a07fa0b..fd1e0f9b1cef48c5df1afaaedc0c97bee1c12dc5 100644 --- a/tools/testing/selftests/kselftest/runner.sh +++ b/tools/testing/selftests/kselftest/runner.sh @@ -44,6 +44,12 @@ tap_timeout() fi } +report_failure() +{ + echo "not ok $*" >> "$kselftest_failures_file" + echo "$*" >> "$kselftest_failures_file" +} + run_one() { DIR="$1" @@ -105,7 +111,7 @@ run_one() echo "# $TEST_HDR_MSG" if [ ! -e "$TEST" ]; then echo "# Warning: file $TEST is missing!" - echo "not ok $test_num $TEST_HDR_MSG" + report_failure "$test_num $TEST_HDR_MSG" else if [ -x /usr/bin/stdbuf ]; then stdbuf="/usr/bin/stdbuf --output=L " @@ -123,7 +129,7 @@ run_one() interpreter=$(head -n 1 "$TEST" | cut -c 3-) cmd="$stdbuf $interpreter ./$BASENAME_TEST" else - echo "not ok $test_num $TEST_HDR_MSG" + report_failure "$test_num $TEST_HDR_MSG" return fi fi @@ -137,9 +143,9 @@ run_one() echo "ok $test_num $TEST_HDR_MSG # SKIP" elif [ $rc -eq $timeout_rc ]; then \ echo "#" - echo "not ok $test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds" + report_failure "$test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds" else - echo "not ok $test_num $TEST_HDR_MSG # exit=$rc" + report_failure "$test_num $TEST_HDR_MSG # exit=$rc" fi) cd - >/dev/null fi diff --git a/tools/testing/selftests/run_kselftest.sh b/tools/testing/selftests/run_kselftest.sh index 0443beacf3621ae36cb12ffd57f696ddef3526b5..c345f38ad424029bfe50d19b26bdd1d4bda29316 100755 --- a/tools/testing/selftests/run_kselftest.sh +++ b/tools/testing/selftests/run_kselftest.sh @@ -36,6 +36,7 @@ Usage: $0 [OPTIONS] -n | --netns Run each test in namespace -h | --help Show this usage info -o | --override-timeout Number of seconds after which we timeout + -e | --error-on-fail After finishing all tests, exit with code 1 if any failed. EOF exit $1 } @@ -44,6 +45,7 @@ COLLECTIONS="" TESTS="" dryrun="" kselftest_override_timeout="" +ERROR_ON_FAIL=false while true; do case "$1" in -s | --summary) @@ -71,6 +73,9 @@ while true; do -o | --override-timeout) kselftest_override_timeout="$2" shift 2 ;; + -e | --error-on-fail) + ERROR_ON_FAIL="true" + shift ;; -h | --help) usage 0 ;; "") @@ -105,9 +110,18 @@ if [ -n "$TESTS" ]; then available="$(echo "$valid" | sed -e 's/ /\n/g')" fi +kselftest_failures_file=$(mktemp --tmpdir kselftest-failures-XXXXXX) +export kselftest_failures_file + collections=$(echo "$available" | cut -d: -f1 | sort | uniq) for collection in $collections ; do [ -w /dev/kmsg ] && echo "kselftest: Running tests in $collection" >> /dev/kmsg tests=$(echo "$available" | grep "^$collection:" | cut -d: -f2) ($dryrun cd "$collection" && $dryrun run_many $tests) done + +failures="$(cat "$kselftest_failures_file")" +rm "$kselftest_failures_file" +if "$ERROR_ON_FAIL" && [ "$failures" ]; then + exit 1 +fi --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20251007-b4-ksft-error-on-fail-0c2cb3246041 Best regards, -- Brendan Jackman <jackmanb(a)google.com>

1 week, 2 days

2
2
0 0

[linux-next20251003] tmp2 selftests resulting in Kernel OOPs

by Venkat Rao Bagalkote

Greetings!!! IBM CI has reported a kernel OOPs while running TPM2selftests on IBM Power11 system with linux-next20251002 kernel. Test Case: make run_tests TAP version 13 1..3 # timeout set to 600 # selftests: tpm2: test_smoke.sh # test_read_partial_overwrite (tpm2_tests.SmokeTest) ... ok # test_read_partial_resp (tpm2_tests.SmokeTest) ... ok # test_seal_with_auth (tpm2_tests.SmokeTest) ... ok # test_seal_with_policy (tpm2_tests.SmokeTest) ... ok # test_seal_with_too_long_auth (tpm2_tests.SmokeTest) ... ok # test_send_two_cmds (tpm2_tests.SmokeTest) ... ok # test_too_short_cmd (tpm2_tests.SmokeTest) ... ok # test_unseal_with_wrong_auth (tpm2_tests.SmokeTest) ... ok # test_unseal_with_wrong_policy (tpm2_tests.SmokeTest) ... ERROR # # ====================================================================== # ERROR: test_unseal_with_wrong_policy (tpm2_tests.SmokeTest) # ----------------------------------------------------- Traces: [ 452.604333] BUG: KASAN: slab-use-after-free in tpmrm_release+0x78/0xa8 [ 452.604345] Read of size 8 at addr c00000001c650000 by task python3/1856 [ 452.604353] [ 452.604358] CPU: 24 UID: 0 PID: 1856 Comm: python3 Kdump: loaded Not tainted 6.17.0-next-20251003 #1 VOLUNTARY [ 452.604364] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries [ 452.604368] Call Trace: [ 452.604370] [c0000000c1867840] [c00000000187ea4c] dump_stack_lvl+0x84/0xe8 (unreliable) [ 452.604380] [c0000000c1867870] [c000000000803754] print_address_description.constprop.0+0x11c/0x56c [ 452.604388] [c0000000c1867910] [c000000000803c84] print_report+0xe0/0x358 [ 452.604394] [c0000000c18679e0] [c000000000804124] kasan_report+0x128/0x1f4 [ 452.604400] [c0000000c1867af0] [c0000000008062b4] __asan_load8+0xa8/0xe0 [ 452.604406] [c0000000c1867b10] [c000000000f2ec18] tpmrm_release+0x78/0xa8 [ 452.604412] [c0000000c1867b40] [c0000000008b6a2c] __fput+0x21c/0x60c [ 452.604417] [c0000000c1867bc0] [c0000000008ada70] sys_close+0x74/0xd0 [ 452.604424] [c0000000c1867bf0] [c000000000039270] system_call_exception+0x1e0/0x460 [ 452.604431] [c0000000c1867e50] [c00000000000d05c] system_call_vectored_common+0x15c/0x2ec [ 452.604438] ---- interrupt: 3000 at 0x7fffb7534ab4 [ 452.604443] NIP: 00007fffb7534ab4 LR: 00007fffb7534ab4 CTR: 0000000000000000 [ 452.604446] REGS: c0000000c1867e80 TRAP: 3000 Not tainted (6.17.0-next-20251003) [ 452.604449] MSR: 800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 44284422 XER: 00000000 [ 452.604466] IRQMASK: 0 [ 452.604466] GPR00: 0000000000000006 00007ffff65d76b0 00007fffb7c17700 0000000000000006 [ 452.604466] GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000000000004 [ 452.604466] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 452.604466] GPR12: 0000000000000000 00007fffb7e6b8e0 00000000000000a1 00007fffb67acec0 [ 452.604466] GPR16: 0000000164032ad0 00007fffb67aceb0 00007fffb76f6a90 0000000000000000 [ 452.604466] GPR20: 00007fffb6f21850 0000000000000000 00007fffb71062c0 0000000164034490 [ 452.604466] GPR24: 00007fffb6f2fea0 00007fffb67acea8 0000000164032b18 00007fffb7c45b32 [ 452.604466] GPR28: 00007fffb7c678e0 00007fffb67aceb8 0000000000000006 0000000164034490 [ 452.604510] NIP [00007fffb7534ab4] 0x7fffb7534ab4 [ 452.604513] LR [00007fffb7534ab4] 0x7fffb7534ab4 [ 452.604516] ---- interrupt: 3000 [ 452.604518] [ 452.604601] Allocated by task 1856: [ 452.604607] kasan_save_stack+0x34/0x64 [ 452.604614] kasan_save_track+0x2c/0x50 [ 452.604621] kasan_save_alloc_info+0x58/0x74 [ 452.604628] __kasan_kmalloc+0x12c/0x168 [ 452.604635] __kmalloc_cache_noprof+0x1d8/0x71c [ 452.604643] tpmrm_open+0x88/0x168 [ 452.604649] chrdev_open+0x1f4/0x484 [ 452.604656] do_dentry_open+0x578/0x9cc [ 452.604663] vfs_open+0x68/0x23c [ 452.604670] do_open+0x514/0x74c [ 452.604676] path_openat+0x16c/0x380 [ 452.604682] do_filp_open+0x104/0x230 [ 452.604689] do_sys_openat2+0xb8/0x154 [ 452.604696] sys_openat+0xcc/0x130 [ 452.604703] system_call_exception+0x1e0/0x460 [ 452.604710] system_call_vectored_common+0x15c/0x2ec [ 452.604718] [ 452.604722] Freed by task 1856: [ 452.604726] kasan_save_stack+0x34/0x64 [ 452.604733] kasan_save_track+0x2c/0x50 [ 452.604739] __kasan_save_free_info+0x64/0x110 [ 452.604747] __kasan_slab_free+0xb0/0x10c [ 452.604753] kfree+0x220/0x624 [ 452.604760] tpmrm_release+0x6c/0xa8 [ 452.604766] __fput+0x21c/0x60c [ 452.604772] sys_close+0x74/0xd0 [ 452.604779] system_call_exception+0x1e0/0x460 [ 452.604786] system_call_vectored_common+0x15c/0x2ec [ 452.604794] [ 452.604797] The buggy address belongs to the object at c00000001c650000 [ 452.604797] which belongs to the cache kmalloc-8k of size 8192 [ 452.604806] The buggy address is located 0 bytes inside of [ 452.604806] freed 8192-byte region [c00000001c650000, c00000001c652000) [ 452.604815] [ 452.604818] The buggy address belongs to the physical page: [ 452.604824] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xc00000001c644000 pfn:0x1c60 [ 452.604833] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 452.604840] flags: 0x3ffffe00000040(head|node=0|zone=0|lastcpupid=0x1fffff) [ 452.604849] page_type: f5(slab) [ 452.604856] raw: 003ffffe00000040 c000000007012300 5deadbeef0000122 0000000000000000 [ 452.604864] raw: c00000001c644000 000000008020001e 00000000f5000000 0000000000000000 [ 452.604872] head: 003ffffe00000040 c000000007012300 5deadbeef0000122 0000000000000000 [ 452.604879] head: c00000001c644000 000000008020001e 00000000f5000000 0000000000000000 [ 452.604887] head: 003ffffe00000003 c00c000000071801 00000000ffffffff 00000000ffffffff [ 452.604894] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 452.604900] page dumped because: kasan: bad access detected [ 452.604905] [ 452.604908] Memory state around the buggy address: [ 452.604914] c00000001c64ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 452.604920] c00000001c64ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 452.604927] >c00000001c650000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 452.604933] ^ [ 452.604937] c00000001c650080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 452.604944] c00000001c650100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 452.604950] ================================================================== [ 452.604955] Disabling lock debugging due to kernel taint [ 452.604961] Kernel attempted to read user page (770) - exploit attempt? (uid: 0) [ 452.604969] BUG: Kernel NULL pointer dereference on read at 0x00000770 [ 452.604975] Faulting instruction address: 0xc0000000002b2e0c [ 452.604982] Oops: Kernel access of bad area, sig: 11 [#1] [ 452.604987] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries [ 452.604996] Modules linked in: nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat bonding nf_conntrack tls nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables nfnetlink sunrpc pseries_rng vmx_crypto fuse ext4 crc16 mbcache jbd2 sd_mod sg ibmvscsi ibmveth scsi_transport_srp pseries_wdt [ 452.605073] CPU: 24 UID: 0 PID: 1856 Comm: python3 Kdump: loaded Tainted: G B 6.17.0-next-20251003 #1 VOLUNTARY [ 452.605084] Tainted: [B]=BAD_PAGE [ 452.605089] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries [ 452.605096] NIP: c0000000002b2e0c LR: c0000000002b2e08 CTR: 0000000000000000 [ 452.605103] REGS: c0000000c1867820 TRAP: 0300 Tainted: G B (6.17.0-next-20251003) [ 452.605110] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28284420 XER: 0000000d [ 452.605132] CFAR: c000000000807920 DAR: 0000000000000770 DSISR: 40000000 IRQMASK: 0 [ 452.605132] GPR00: c0000000002b2e08 c0000000c1867ac0 c00000000234a500 0000000000000001 [ 452.605132] GPR04: 0000000000000008 0000000000000000 c0000000002b2e08 0000000000000001 [ 452.605132] GPR08: 0000000000000020 0000000000000001 0000000000000001 a80e000000000000 [ 452.605132] GPR12: c00e0000009b1c8c c000000d0ddeb700 0000000000000000 0000000000000000 [ 452.605132] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 452.605132] GPR20: 0000000000000008 0000000000000000 c000000008202f00 c00000007b9ff620 [ 452.605132] GPR24: c00000008a76cb20 c00000008a76cb40 c00000008a76cb08 c000000002201e80 [ 452.605132] GPR28: c000000061569248 0000000000000770 c00000008a76cb00 0000000000000768 [ 452.605227] NIP [c0000000002b2e0c] up_read+0x50/0x17c [ 452.605237] LR [c0000000002b2e08] up_read+0x4c/0x17c [ 452.605245] Call Trace: [ 452.605249] [c0000000c1867ac0] [c0000000002b2e08] up_read+0x4c/0x17c (unreliable) [ 452.605261] [c0000000c1867b10] [c000000000f2ec28] tpmrm_release+0x88/0xa8 [ 452.605271] [c0000000c1867b40] [c0000000008b6a2c] __fput+0x21c/0x60c [ 452.605280] [c0000000c1867bc0] [c0000000008ada70] sys_close+0x74/0xd0 [ 452.605291] [c0000000c1867bf0] [c000000000039270] system_call_exception+0x1e0/0x460 [ 452.605301] [c0000000c1867e50] [c00000000000d05c] system_call_vectored_common+0x15c/0x2ec [ 452.605312] ---- interrupt: 3000 at 0x7fffb7534ab4 [ 452.605319] NIP: 00007fffb7534ab4 LR: 00007fffb7534ab4 CTR: 0000000000000000 [ 452.605326] REGS: c0000000c1867e80 TRAP: 3000 Tainted: G B (6.17.0-next-20251003) [ 452.605333] MSR: 800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 44284422 XER: 00000000 [ 452.605362] IRQMASK: 0 [ 452.605362] GPR00: 0000000000000006 00007ffff65d76b0 00007fffb7c17700 0000000000000006 [ 452.605362] GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000000000004 [ 452.605362] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 452.605362] GPR12: 0000000000000000 00007fffb7e6b8e0 00000000000000a1 00007fffb67acec0 [ 452.605362] GPR16: 0000000164032ad0 00007fffb67aceb0 00007fffb76f6a90 0000000000000000 [ 452.605362] GPR20: 00007fffb6f21850 0000000000000000 00007fffb71062c0 0000000164034490 [ 452.605362] GPR24: 00007fffb6f2fea0 00007fffb67acea8 0000000164032b18 00007fffb7c45b32 [ 452.605362] GPR28: 00007fffb7c678e0 00007fffb67aceb8 0000000000000006 0000000164034490 [ 452.605450] NIP [00007fffb7534ab4] 0x7fffb7534ab4 [ 452.605456] LR [00007fffb7534ab4] 0x7fffb7534ab4 [ 452.605462] ---- interrupt: 3000 [ 452.605467] Code: fbc1fff0 7c7f1b78 f8010010 f821ffb1 e92d0c78 f9210028 39200000 3ba30008 38800008 7fa3eb78 48554af5 60000000 <ebdf0008> eb8d0908 7bc90764 fbc10020 [ 452.605501] ---[ end trace 0000000000000000 ]--- [ 452.613685] pstore: backend (nvram) writing error (-1) [ 452.613691] If you happen to fix this, please add below tag. Reported-by: Venkat Rao Bagalkote <venkat88(a)linux.ibm.com> Regards, Venkat.

1 week, 2 days

4
4
0 0

[PATCH net-next v6 0/9] vsock: add namespace support to vhost-vsock

by Bobby Eshleman

This series adds namespace support to vhost-vsock and loopback. It does not add namespaces to any of the other guest transports (virtio-vsock, hyperv, or vmci). The current revision supports two modes: local and global. Local mode is complete isolation of namespaces, while global mode is complete sharing between namespaces of CIDs (the original behavior). The mode is set using /proc/sys/net/vsock/ns_mode. Modes are per-netns and write-once. This allows a system to configure namespaces independently (some may share CIDs, others are completely isolated). This also supports future possible mixed use cases, where there may be namespaces in global mode spinning up VMs while there are mixed mode namespaces that provide services to the VMs, but are not allowed to allocate from the global CID pool (this mode not implemented in this series). If a socket or VM is created when a namespace is global but the namespace changes to local, the socket or VM will continue working normally. That is, the socket or VM assumes the mode behavior of the namespace at the time the socket/VM was created. The original mode is captured in vsock_create() and so occurs at the time of socket(2) and accept(2) for sockets and open(2) on /dev/vhost-vsock for VMs. This prevents a socket/VM connection from suddenly breaking due to a namespace mode change. Any new sockets/VMs created after the mode change will adopt the new mode's behavior. Additionally, added tests for the new namespace features: tools/testing/selftests/vsock/vmtest.sh 1..22 ok 1 vm_server_host_client ok 2 vm_client_host_server ok 3 vm_loopback ok 4 host_vsock_ns_mode_ok ok 5 host_vsock_ns_mode_write_once_ok ok 6 global_same_cid_fails ok 7 local_same_cid_ok ok 8 global_local_same_cid_ok ok 9 local_global_same_cid_ok ok 10 diff_ns_global_host_connect_to_global_vm_ok ok 11 diff_ns_global_host_connect_to_local_vm_fails ok 12 diff_ns_global_vm_connect_to_global_host_ok ok 13 diff_ns_global_vm_connect_to_local_host_fails ok 14 diff_ns_local_host_connect_to_local_vm_fails ok 15 diff_ns_local_vm_connect_to_local_host_fails ok 16 diff_ns_global_to_local_loopback_local_fails ok 17 diff_ns_local_to_global_loopback_fails ok 18 diff_ns_local_to_local_loopback_fails ok 19 diff_ns_global_to_global_loopback_ok ok 20 same_ns_local_loopback_ok ok 21 same_ns_local_host_connect_to_local_vm_ok ok 22 same_ns_local_vm_connect_to_local_host_ok SUMMARY: PASS=22 SKIP=0 FAIL=0 Log: /tmp/vsock_vmtest_OQC4.log Thanks again for everyone's help and reviews! Signed-off-by: Bobby Eshleman <bobbyeshleman(a)gmail.com> To: Stefano Garzarella <sgarzare(a)redhat.com> To: Shuah Khan <shuah(a)kernel.org> To: David S. Miller <davem(a)davemloft.net> To: Eric Dumazet <edumazet(a)google.com> To: Jakub Kicinski <kuba(a)kernel.org> To: Paolo Abeni <pabeni(a)redhat.com> To: Simon Horman <horms(a)kernel.org> To: Stefan Hajnoczi <stefanha(a)redhat.com> To: Michael S. Tsirkin <mst(a)redhat.com> To: Jason Wang <jasowang(a)redhat.com> To: Xuan Zhuo <xuanzhuo(a)linux.alibaba.com> To: Eugenio Pérez <eperezma(a)redhat.com> To: K. Y. Srinivasan <kys(a)microsoft.com> To: Haiyang Zhang <haiyangz(a)microsoft.com> To: Wei Liu <wei.liu(a)kernel.org> To: Dexuan Cui <decui(a)microsoft.com> To: Bryan Tan <bryan-bt.tan(a)broadcom.com> To: Vishnu Dasa <vishnu.dasa(a)broadcom.com> To: Broadcom internal kernel review list <bcm-kernel-feedback-list(a)broadcom.com> Cc: virtualization(a)lists.linux.dev Cc: netdev(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Cc: kvm(a)vger.kernel.org Cc: linux-hyperv(a)vger.kernel.org Cc: berrange(a)redhat.com Changes in v6: - define behavior when mode changes to local while socket/VM is alive - af_vsock: clarify description of CID behavior - af_vsock: use stronger langauge around CID rules (dont use "may") - af_vsock: improve naming of buf/buffer - af_vsock: improve string length checking on proc writes - vsock_loopback: add space in struct to clarify lock protection - vsock_loopback: do proper cleanup/unregister on vsock_loopback_exit() - vsock_loopback: use virtio_vsock_skb_net() instead of sock_net() - vsock_loopback: set loopback to NULL after kfree() - vsock_loopback: use pernet_operations and remove callback mechanism - vsock_loopback: add macros for "global" and "local" - vsock_loopback: fix length checking - vmtest.sh: check for namespace support in vmtest.sh - Link to v5: https://lore.kernel.org/r/20250827-vsock-vmtest-v5-0-0ba580bede5b@meta.com Changes in v5: - /proc/net/vsock_ns_mode -> /proc/sys/net/vsock/ns_mode - vsock_global_net -> vsock_global_dummy_net - fix netns lookup in vhost_vsock to respect pid namespaces - add callbacks for vsock_loopback to avoid circular dependency - vmtest.sh loads vsock_loopback module - remove vsock_net_mode_can_set() - change vsock_net_write_mode() to return true/false based on success - make vsock_net_mode enum instead of u8 - Link to v4: https://lore.kernel.org/r/20250805-vsock-vmtest-v4-0-059ec51ab111@meta.com Changes in v4: - removed RFC tag - implemented loopback support - renamed new tests to better reflect behavior - completed suite of tests with permutations of ns modes and vsock_test as guest/host - simplified socat bridging with unix socket instead of tcp + veth - only use vsock_test for success case, socat for failure case (context in commit message) - lots of cleanup Changes in v3: - add notion of "modes" - add procfs /proc/net/vsock_ns_mode - local and global modes only - no /dev/vhost-vsock-netns - vmtest.sh already merged, so new patch just adds new tests for NS - Link to v2: https://lore.kernel.org/kvm/20250312-vsock-netns-v2-0-84bffa1aa97a@gmail.com Changes in v2: - only support vhost-vsock namespaces - all g2h namespaces retain old behavior, only common API changes impacted by vhost-vsock changes - add /dev/vhost-vsock-netns for "opt-in" - leave /dev/vhost-vsock to old behavior - removed netns module param - Link to v1: https://lore.kernel.org/r/20200116172428.311437-1-sgarzare@redhat.com Changes in v1: - added 'netns' module param to vsock.ko to enable the network namespace support (disabled by default) - added 'vsock_net_eq()' to check the "net" assigned to a socket only when 'netns' support is enabled - Link to RFC: https://patchwork.ozlabs.org/cover/1202235/ --- Bobby Eshleman (9): vsock: a per-net vsock NS mode state vsock: add net to vsock skb cb vsock: add netns to vsock core vsock/loopback: add netns support vsock/virtio: add netns to virtio transport common vhost/vsock: add netns support selftests/vsock: improve logging in vmtest.sh selftests/vsock: invoke vsock_test through helpers selftests/vsock: add namespace tests MAINTAINERS | 1 + drivers/vhost/vsock.c | 78 ++- include/linux/virtio_vsock.h | 24 + include/net/af_vsock.h | 71 +- include/net/net_namespace.h | 4 + include/net/netns/vsock.h | 26 + net/vmw_vsock/af_vsock.c | 219 +++++- net/vmw_vsock/hyperv_transport.c | 2 +- net/vmw_vsock/virtio_transport.c | 6 +- net/vmw_vsock/virtio_transport_common.c | 18 +- net/vmw_vsock/vmci_transport.c | 6 +- net/vmw_vsock/vsock_loopback.c | 102 ++- tools/testing/selftests/vsock/vmtest.sh | 1133 +++++++++++++++++++++++++++---- 13 files changed, 1501 insertions(+), 189 deletions(-) --- base-commit: 949ddfb774fe527cebfa3f769804344940f7ed2e change-id: 20250325-vsock-vmtest-b3a21d2102c2 Best regards, -- Bobby Eshleman <bobbyeshleman(a)meta.com>

1 week, 2 days

4
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[PATCH AUTOSEL 6.17] kunit: Enable PCI on UML without triggering WARN()

by Sasha Levin

From: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> [ Upstream commit 031cdd3bc3f369553933c1b0f4cb18000162c8ff ] Various KUnit tests require PCI infrastructure to work. All normal platforms enable PCI by default, but UML does not. Enabling PCI from .kunitconfig files is problematic as it would not be portable. So in commit 6fc3a8636a7b ("kunit: tool: Enable virtio/PCI by default on UML") PCI was enabled by way of CONFIG_UML_PCI_OVER_VIRTIO=y. However CONFIG_UML_PCI_OVER_VIRTIO requires additional configuration of CONFIG_UML_PCI_OVER_VIRTIO_DEVICE_ID or will otherwise trigger a WARN() in virtio_pcidev_init(). However there is no one correct value for UML_PCI_OVER_VIRTIO_DEVICE_ID which could be used by default. This warning is confusing when debugging test failures. On the other hand, the functionality of CONFIG_UML_PCI_OVER_VIRTIO is not used at all, given that it is completely non-functional as indicated by the WARN() in question. Instead it is only used as a way to enable CONFIG_UML_PCI which itself is not directly configurable. Instead of going through CONFIG_UML_PCI_OVER_VIRTIO, introduce a custom configuration option which enables CONFIG_UML_PCI without triggering warnings or building dead code. Link: https://lore.kernel.org/r/20250908-kunit-uml-pci-v2-1-d8eba5f73c9d@linutron… Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> Reviewed-by: Johannes Berg <johannes(a)sipsolutions.net> Reviewed-by: David Gow <davidgow(a)google.com> Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- LLM Generated explanations, may be completely bogus: YES – this change removes a longstanding WARN() that currently fires on every UML KUnit run while keeping the needed PCI plumbing available for the tests. - Default UML KUnit builds enable `CONFIG_UML_PCI_OVER_VIRTIO`, whose probe path calls `WARN(CONFIG_UML_PCI_OVER_VIRTIO_DEVICE_ID < 0, ...)` and immediately bails out because the default device ID stays at -1 (arch/um/drivers/virtio_pcidev.c:616); many CI setups treat that WARN as fatal, so KUnit runs are polluted or aborted. - The patch introduces `CONFIG_KUNIT_UML_PCI` (lib/kunit/Kconfig:89) to `select UML_PCI` directly when building UML with KUnit, letting us obtain the PCI core helpers without instantiating the virtio shim that never worked in this configuration anyway. - With `tools/testing/kunit/configs/arch_uml.config:4` switching from `CONFIG_VIRTIO_UML`/`CONFIG_UML_PCI_OVER_VIRTIO` to `CONFIG_KUNIT_UML_PCI=y`, UML KUnit boots stop compiling the dead `virtio_pcidev` code and therefore stop triggering the WARN while still enabling the same PCI infrastructure the tests expect. - The change is tightly scoped to KUnit-on-UML, introduces no behaviour change for production kernels, and effectively fixes the regression introduced by 6fc3a8636a7b (“kunit: tool: Enable virtio/PCI by default on UML”). lib/kunit/Kconfig | 7 +++++++ tools/testing/kunit/configs/arch_uml.config | 5 ++--- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/lib/kunit/Kconfig b/lib/kunit/Kconfig index c10ede4b1d220..1823539e96da3 100644 --- a/lib/kunit/Kconfig +++ b/lib/kunit/Kconfig @@ -106,4 +106,11 @@ config KUNIT_DEFAULT_TIMEOUT If unsure, the default timeout of 300 seconds is suitable for most cases. +config KUNIT_UML_PCI + bool "KUnit UML PCI Support" + depends on UML + select UML_PCI + help + Enables the PCI subsystem on UML for use by KUnit tests. + endif # KUNIT diff --git a/tools/testing/kunit/configs/arch_uml.config b/tools/testing/kunit/configs/arch_uml.config index 54ad8972681a2..28edf816aa70e 100644 --- a/tools/testing/kunit/configs/arch_uml.config +++ b/tools/testing/kunit/configs/arch_uml.config @@ -1,8 +1,7 @@ # Config options which are added to UML builds by default -# Enable virtio/pci, as a lot of tests require it. -CONFIG_VIRTIO_UML=y -CONFIG_UML_PCI_OVER_VIRTIO=y +# Enable pci, as a lot of tests require it. +CONFIG_KUNIT_UML_PCI=y # Enable FORTIFY_SOURCE for wider checking. CONFIG_FORTIFY_SOURCE=y -- 2.51.0

1 week, 2 days

1
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[PATCH AUTOSEL 6.17-6.16] rust: kunit: allow `cfg` on `test`s

by Sasha Levin

From: Kaibo Ma <ent3rm4n(a)gmail.com> [ Upstream commit c652dc44192d96820d73a7ecd89d275ca7e4355d ] The `kunit_test` proc macro only checks for the `test` attribute immediately preceding a `fn`. If the function is disabled via a `cfg`, the generated code would result in a compile error referencing a non-existent function [1]. This collects attributes and specifically cherry-picks `cfg` attributes to be duplicated inside KUnit wrapper functions such that a test function disabled via `cfg` compiles and is marked as skipped in KUnit correctly. Link: https://lore.kernel.org/r/20250916021259.115578-1-ent3rm4n@gmail.com Link: https://lore.kernel.org/rust-for-linux/CANiq72==48=69hYiDo1321pCzgn_n1_jg=e… [1] Closes: https://github.com/Rust-for-Linux/linux/issues/1185 Suggested-by: Miguel Ojeda <ojeda(a)kernel.org> Suggested-by: David Gow <davidgow(a)google.com> Signed-off-by: Kaibo Ma <ent3rm4n(a)gmail.com> Reviewed-by: David Gow <davidgow(a)google.com> Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- LLM Generated explanations, may be completely bogus: YES - User-visible bug fixed. Without this change, a Rust KUnit test function annotated with a cfg which disables the function causes a compile error because the generated wrapper still references a non- existent function. In v6.17, the macro only looks for a “[test]” immediately followed by “fn” and blindly emits a wrapper which calls the function (see rust/macros/kunit.rs:1-80 and rust/macros/kunit.rs:112-132 in v6.17). The tree itself even carries a workaround comment noting “Kunit #[test]s do not support `cfg` yet” and gates inside the function body instead of on the attribute (rust/kernel/bitmap.rs:554-569). - Small, contained fix in the Rust KUnit macro. The patch augments only the KUnit proc-macro and sample tests: - Attribute collection: It now collects consecutive attributes and tracks them by name, specifically picking up “cfg” next to “test” so it can be reused (rust/macros/kunit.rs:42-71). This makes test detection tolerant to attribute ordering while still requiring a “test” attribute. - Wrapper guarding + skip semantics: The generated wrapper sets the test status to SKIPPED by default, then encloses the test call inside the copied cfg-guard. If the cfg disables the test, the guarded block is not compiled and the wrapper reports SKIPPED; otherwise it sets SUCCESS and runs the test, with failures correctly recorded via KUnit’s assert mapping (rust/macros/kunit.rs:116-133). The array size computation is slightly refactored but functionally identical (rust/macros/kunit.rs:162-168). - A disabled example test is added to validate the behavior (rust/kernel/kunit.rs:365-371). - No architectural or ABI changes; limited blast radius. - This affects only the Rust KUnit test infrastructure and is active only when KUnit is enabled: the module is `#[cfg(CONFIG_KUNIT="y")]` (rust/macros/kunit.rs:73-78). - Production kernels without KUnit are unaffected. Runtime code paths are unchanged; only test wrappers and macro expansion change. - Correctness and behavior details. - The new wrapper’s pre-set status to SUCCESS before the assert is benign: KUnit assert macros report failures and abort the test, overriding status (see kunit_assert! and related handling in rust/kernel/kunit.rs:55-151). When cfg is false, the function symbol is not referenced because the guarded block is not compiled, avoiding the previous compile error entirely. - Only cfg attributes are duplicated into the wrapper, leaving other attributes intact on the original function; the macro still strips only the #[test] attribute from the function body (rust/macros/kunit.rs:176-195). - Stable backport considerations. - Clean backport target: v6.17.y and newer. v6.17 already has KUnit’s Rust assert mapping and the `is_test_result_ok()` plumbing that this wrapper uses (rust/macros/kunit.rs:112-156 in v6.17; rust/kernel/kunit.rs:169-192). The patch slots in cleanly there. - Older stable series (e.g., v6.15.y/v6.16.y) use an earlier version of the macro (e.g., rust/macros/kunit.rs in v6.15) lacking assert mapping and absolute paths. Backporting to those would require additional prerequisite commits (“use absolute paths in macros referencing core and kernel”, KUnit assert mapping, and Result support). Without those prerequisites, this patch won’t apply or compile as-is. For those older trees, either adapt the patch to that macro baseline or avoid backporting. - No explicit “Cc: stable(a)vger.kernel.xn--org-9o0a in the commit, but this is a low-risk build fix for KUnit/Rust that prevents compile errors and reports disabled tests correctly as SKIPPED. It aligns with stable policies for important, contained fixes in test infrastructure. - Risk assessment. - Low regression risk: confined to test macro expansion with KUnit enabled; no impact on production code paths. - Attribute scanning remains conservative: it still requires a #[test] attribute and does not broaden test discovery beyond that. It only improves tolerance to preceding attributes and adds cfg duplication for correctness. Given the above, this is a good candidate for backporting to stable trees which already contain the modern Rust KUnit macro (notably v6.17.y+). rust/kernel/kunit.rs | 7 +++++++ rust/macros/kunit.rs | 48 +++++++++++++++++++++++++++++++++----------- 2 files changed, 43 insertions(+), 12 deletions(-) diff --git a/rust/kernel/kunit.rs b/rust/kernel/kunit.rs index 41efd87595d6e..32640dfc968fe 100644 --- a/rust/kernel/kunit.rs +++ b/rust/kernel/kunit.rs @@ -357,4 +357,11 @@ fn rust_test_kunit_example_test() { fn rust_test_kunit_in_kunit_test() { assert!(in_kunit_test()); } + + #[test] + #[cfg(not(all()))] + fn rust_test_kunit_always_disabled_test() { + // This test should never run because of the `cfg`. + assert!(false); + } } diff --git a/rust/macros/kunit.rs b/rust/macros/kunit.rs index 81d18149a0cc9..b395bb0536959 100644 --- a/rust/macros/kunit.rs +++ b/rust/macros/kunit.rs @@ -5,6 +5,7 @@ //! Copyright (c) 2023 José Expósito <jose.exposito89(a)gmail.com> use proc_macro::{Delimiter, Group, TokenStream, TokenTree}; +use std::collections::HashMap; use std::fmt::Write; pub(crate) fn kunit_tests(attr: TokenStream, ts: TokenStream) -> TokenStream { @@ -41,20 +42,32 @@ pub(crate) fn kunit_tests(attr: TokenStream, ts: TokenStream) -> TokenStream { // Get the functions set as tests. Search for `[test]` -> `fn`. let mut body_it = body.stream().into_iter(); let mut tests = Vec::new(); + let mut attributes: HashMap<String, TokenStream> = HashMap::new(); while let Some(token) = body_it.next() { match token { - TokenTree::Group(ident) if ident.to_string() == "[test]" => match body_it.next() { - Some(TokenTree::Ident(ident)) if ident.to_string() == "fn" => { - let test_name = match body_it.next() { - Some(TokenTree::Ident(ident)) => ident.to_string(), - _ => continue, - }; - tests.push(test_name); + TokenTree::Punct(ref p) if p.as_char() == '#' => match body_it.next() { + Some(TokenTree::Group(g)) if g.delimiter() == Delimiter::Bracket => { + if let Some(TokenTree::Ident(name)) = g.stream().into_iter().next() { + // Collect attributes because we need to find which are tests. We also + // need to copy `cfg` attributes so tests can be conditionally enabled. + attributes + .entry(name.to_string()) + .or_default() + .extend([token, TokenTree::Group(g)]); + } + continue; } - _ => continue, + _ => (), }, + TokenTree::Ident(i) if i.to_string() == "fn" && attributes.contains_key("test") => { + if let Some(TokenTree::Ident(test_name)) = body_it.next() { + tests.push((test_name, attributes.remove("cfg").unwrap_or_default())) + } + } + _ => (), } + attributes.clear(); } // Add `#[cfg(CONFIG_KUNIT="y")]` before the module declaration. @@ -100,11 +113,22 @@ pub(crate) fn kunit_tests(attr: TokenStream, ts: TokenStream) -> TokenStream { let mut test_cases = "".to_owned(); let mut assert_macros = "".to_owned(); let path = crate::helpers::file(); - for test in &tests { + let num_tests = tests.len(); + for (test, cfg_attr) in tests { let kunit_wrapper_fn_name = format!("kunit_rust_wrapper_{test}"); - // An extra `use` is used here to reduce the length of the message. + // Append any `cfg` attributes the user might have written on their tests so we don't + // attempt to call them when they are `cfg`'d out. An extra `use` is used here to reduce + // the length of the assert message. let kunit_wrapper = format!( - "unsafe extern \"C\" fn {kunit_wrapper_fn_name}(_test: *mut ::kernel::bindings::kunit) {{ use ::kernel::kunit::is_test_result_ok; assert!(is_test_result_ok({test}())); }}", + r#"unsafe extern "C" fn {kunit_wrapper_fn_name}(_test: *mut ::kernel::bindings::kunit) + {{ + (*_test).status = ::kernel::bindings::kunit_status_KUNIT_SKIPPED; + {cfg_attr} {{ + (*_test).status = ::kernel::bindings::kunit_status_KUNIT_SUCCESS; + use ::kernel::kunit::is_test_result_ok; + assert!(is_test_result_ok({test}())); + }} + }}"#, ); writeln!(kunit_macros, "{kunit_wrapper}").unwrap(); writeln!( @@ -139,7 +163,7 @@ macro_rules! assert_eq {{ writeln!( kunit_macros, "static mut TEST_CASES: [::kernel::bindings::kunit_case; {}] = [\n{test_cases} ::kernel::kunit::kunit_case_null(),\n];", - tests.len() + 1 + num_tests + 1 ) .unwrap(); -- 2.51.0

1 week, 2 days

1
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[PATCH v2 00/37] mm: remove nth_page()

by David Hildenbrand

This is based on mm-unstable. I will only CC non-MM folks on the cover letter and the respective patch to not flood too many inboxes (the lists receive all patches). -- As discussed recently with Linus, nth_page() is just nasty and we would like to remove it. To recap, the reason we currently need nth_page() within a folio is because on some kernel configs (SPARSEMEM without SPARSEMEM_VMEMMAP), the memmap is allocated per memory section. While buddy allocations cannot cross memory section boundaries, hugetlb and dax folios can. So crossing a memory section means that "page++" could do the wrong thing. Instead, nth_page() on these problematic configs always goes from page->pfn, to the go from (++pfn)->page, which is rather nasty. Likely, many people have no idea when nth_page() is required and when it might be dropped. We refer to such problematic PFN ranges and "non-contiguous pages". If we only deal with "contiguous pages", there is not need for nth_page(). Besides that "obvious" folio case, we might end up using nth_page() within CMA allocations (again, could span memory sections), and in one corner case (kfence) when processing memblock allocations (again, could span memory sections). So let's handle all that, add sanity checks, and remove nth_page(). Patch #1 -> #5 : stop making SPARSEMEM_VMEMMAP user-selectable + cleanups Patch #6 -> #13 : disallow folios to have non-contiguous pages Patch #14 -> #20 : remove nth_page() usage within folios Patch #22 : disallow CMA allocations of non-contiguous pages Patch #23 -> #33 : sanity+check + remove nth_page() usage within SG entry Patch #34 : sanity-check + remove nth_page() usage in unpin_user_page_range_dirty_lock() Patch #35 : remove nth_page() in kfence Patch #36 : adjust stale comment regarding nth_page Patch #37 : mm: remove nth_page() A lot of this is inspired from the discussion at [1] between Linus, Jason and me, so cudos to them. [1] https://lore.kernel.org/all/CAHk-=wiCYfNp4AJLBORU-c7ZyRBUp66W2-Et6cdQ4REx-G… v1 -> v2: * "fs: hugetlbfs: cleanup folio in adjust_range_hwpoison()" -> Add comment for loop and remove comment of function regarding copy_page_to_iter(). * Various smaller patch description tweaks I am not going to list for my sanity * "mips: mm: convert __flush_dcache_pages() to __flush_dcache_folio_pages()" -> Fix flush_dcache_page() -> Drop "extern" * "mm/gup: remove record_subpages()" -> Added * "mm/hugetlb: check for unreasonable folio sizes when registering hstate" -> Refine comment * "mm/cma: refuse handing out non-contiguous page ranges" -> Add comment above loop * "mm/page_alloc: reject unreasonable folio/compound page sizes in alloc_contig_range_noprof()" -> Added comment above check * "mm/gup: drop nth_page() usage in unpin_user_page_range_dirty_lock()" -> Refined comment RFC -> v1: * "wireguard: selftests: remove CONFIG_SPARSEMEM_VMEMMAP=y from qemu kernel config" -> Mention that it was never really relevant for the test * "mm/mm_init: make memmap_init_compound() look more like prep_compound_page()" -> Mention the setup of page links * "mm: limit folio/compound page sizes in problematic kernel configs" -> Improve comment for PUD handling, mentioning hugetlb and dax * "mm: simplify folio_page() and folio_page_idx()" -> Call variable "n" * "mm/hugetlb: cleanup hugetlb_folio_init_tail_vmemmap()" -> Keep __init_single_page() and refer to the usage of memblock_reserved_mark_noinit() * "fs: hugetlbfs: cleanup folio in adjust_range_hwpoison()" * "fs: hugetlbfs: remove nth_page() usage within folio in adjust_range_hwpoison()" -> Separate nth_page() removal from cleanups -> Further improve cleanups * "io_uring/zcrx: remove nth_page() usage within folio" -> Keep the io_copy_cache for now and limit to nth_page() removal * "mm/gup: drop nth_page() usage within folio when recording subpages" -> Cleanup record_subpages as bit * "mm/cma: refuse handing out non-contiguous page ranges" -> Replace another instance of "pfn_to_page(pfn)" where we already have the page * "scatterlist: disallow non-contigous page ranges in a single SG entry" -> We have to EXPORT the symbol. I thought about moving it to mm_inline.h, but I really don't want to include that in include/linux/scatterlist.h * "ata: libata-eh: drop nth_page() usage within SG entry" * "mspro_block: drop nth_page() usage within SG entry" * "memstick: drop nth_page() usage within SG entry" * "mmc: drop nth_page() usage within SG entry" -> Keep PAGE_SHIFT * "scsi: scsi_lib: drop nth_page() usage within SG entry" * "scsi: sg: drop nth_page() usage within SG entry" -> Split patches, Keep PAGE_SHIFT * "crypto: remove nth_page() usage within SG entry" -> Keep PAGE_SHIFT * "kfence: drop nth_page() usage" -> Keep modifying i and use "start_pfn" only instead Cc: Andrew Morton <akpm(a)linux-foundation.org> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Jason Gunthorpe <jgg(a)nvidia.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: "Liam R. Howlett" <Liam.Howlett(a)oracle.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Jens Axboe <axboe(a)kernel.dk> Cc: Marek Szyprowski <m.szyprowski(a)samsung.com> Cc: Robin Murphy <robin.murphy(a)arm.com> Cc: John Hubbard <jhubbard(a)nvidia.com> Cc: Peter Xu <peterx(a)redhat.com> Cc: Alexander Potapenko <glider(a)google.com> Cc: Marco Elver <elver(a)google.com> Cc: Dmitry Vyukov <dvyukov(a)google.com> Cc: Brendan Jackman <jackmanb(a)google.com> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Zi Yan <ziy(a)nvidia.com> Cc: Dennis Zhou <dennis(a)kernel.org> Cc: Tejun Heo <tj(a)kernel.org> Cc: Christoph Lameter <cl(a)gentwo.org> Cc: Muchun Song <muchun.song(a)linux.dev> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: x86(a)kernel.org Cc: linux-arm-kernel(a)lists.infradead.org Cc: linux-mips(a)vger.kernel.org Cc: linux-s390(a)vger.kernel.org Cc: linux-crypto(a)vger.kernel.org Cc: linux-ide(a)vger.kernel.org Cc: intel-gfx(a)lists.freedesktop.org Cc: dri-devel(a)lists.freedesktop.org Cc: linux-mmc(a)vger.kernel.org Cc: linux-arm-kernel(a)axis.com Cc: linux-scsi(a)vger.kernel.org Cc: kvm(a)vger.kernel.org Cc: virtualization(a)lists.linux.dev Cc: linux-mm(a)kvack.org Cc: io-uring(a)vger.kernel.org Cc: iommu(a)lists.linux.dev Cc: kasan-dev(a)googlegroups.com Cc: wireguard(a)lists.zx2c4.com Cc: netdev(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Cc: linux-riscv(a)lists.infradead.org David Hildenbrand (37): mm: stop making SPARSEMEM_VMEMMAP user-selectable arm64: Kconfig: drop superfluous "select SPARSEMEM_VMEMMAP" s390/Kconfig: drop superfluous "select SPARSEMEM_VMEMMAP" x86/Kconfig: drop superfluous "select SPARSEMEM_VMEMMAP" wireguard: selftests: remove CONFIG_SPARSEMEM_VMEMMAP=y from qemu kernel config mm/page_alloc: reject unreasonable folio/compound page sizes in alloc_contig_range_noprof() mm/memremap: reject unreasonable folio/compound page sizes in memremap_pages() mm/hugetlb: check for unreasonable folio sizes when registering hstate mm/mm_init: make memmap_init_compound() look more like prep_compound_page() mm: sanity-check maximum folio size in folio_set_order() mm: limit folio/compound page sizes in problematic kernel configs mm: simplify folio_page() and folio_page_idx() mm/hugetlb: cleanup hugetlb_folio_init_tail_vmemmap() mm/mm/percpu-km: drop nth_page() usage within single allocation fs: hugetlbfs: remove nth_page() usage within folio in adjust_range_hwpoison() fs: hugetlbfs: cleanup folio in adjust_range_hwpoison() mm/pagewalk: drop nth_page() usage within folio in folio_walk_start() mm/gup: drop nth_page() usage within folio when recording subpages mm/gup: remove record_subpages() io_uring/zcrx: remove nth_page() usage within folio mips: mm: convert __flush_dcache_pages() to __flush_dcache_folio_pages() mm/cma: refuse handing out non-contiguous page ranges dma-remap: drop nth_page() in dma_common_contiguous_remap() scatterlist: disallow non-contigous page ranges in a single SG entry ata: libata-sff: drop nth_page() usage within SG entry drm/i915/gem: drop nth_page() usage within SG entry mspro_block: drop nth_page() usage within SG entry memstick: drop nth_page() usage within SG entry mmc: drop nth_page() usage within SG entry scsi: scsi_lib: drop nth_page() usage within SG entry scsi: sg: drop nth_page() usage within SG entry vfio/pci: drop nth_page() usage within SG entry crypto: remove nth_page() usage within SG entry mm/gup: drop nth_page() usage in unpin_user_page_range_dirty_lock() kfence: drop nth_page() usage block: update comment of "struct bio_vec" regarding nth_page() mm: remove nth_page() arch/arm64/Kconfig | 1 - arch/mips/include/asm/cacheflush.h | 11 +++-- arch/mips/mm/cache.c | 8 ++-- arch/s390/Kconfig | 1 - arch/x86/Kconfig | 1 - crypto/ahash.c | 4 +- crypto/scompress.c | 8 ++-- drivers/ata/libata-sff.c | 6 +-- drivers/gpu/drm/i915/gem/i915_gem_pages.c | 2 +- drivers/memstick/core/mspro_block.c | 3 +- drivers/memstick/host/jmb38x_ms.c | 3 +- drivers/memstick/host/tifm_ms.c | 3 +- drivers/mmc/host/tifm_sd.c | 4 +- drivers/mmc/host/usdhi6rol0.c | 4 +- drivers/scsi/scsi_lib.c | 3 +- drivers/scsi/sg.c | 3 +- drivers/vfio/pci/pds/lm.c | 3 +- drivers/vfio/pci/virtio/migrate.c | 3 +- fs/hugetlbfs/inode.c | 36 +++++--------- include/crypto/scatterwalk.h | 4 +- include/linux/bvec.h | 7 +-- include/linux/mm.h | 48 +++++++++++++++---- include/linux/page-flags.h | 5 +- include/linux/scatterlist.h | 3 +- io_uring/zcrx.c | 4 +- kernel/dma/remap.c | 2 +- mm/Kconfig | 3 +- mm/cma.c | 39 +++++++++------ mm/gup.c | 36 +++++++------- mm/hugetlb.c | 22 +++++---- mm/internal.h | 1 + mm/kfence/core.c | 12 +++-- mm/memremap.c | 3 ++ mm/mm_init.c | 15 +++--- mm/page_alloc.c | 10 +++- mm/pagewalk.c | 2 +- mm/percpu-km.c | 2 +- mm/util.c | 36 ++++++++++++++ tools/testing/scatterlist/linux/mm.h | 1 - .../selftests/wireguard/qemu/kernel.config | 1 - 40 files changed, 217 insertions(+), 146 deletions(-) base-commit: b73c6f2b5712809f5f386780ac46d1d78c31b2e6 -- 2.50.1

1 week, 2 days

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[PATCH v5 00/15] Consolidate iommu page table implementations (AMD)

by Jason Gunthorpe

[Lots of changes in comments thanks to Randy] Currently each of the iommu page table formats duplicates all of the logic to maintain the page table and perform map/unmap/etc operations. There are several different versions of the algorithms between all the different formats. The io-pgtable system provides an interface to help isolate the page table code from the iommu driver, but doesn't provide tools to implement the common algorithms. This makes it very hard to improve the state of the pagetable code under the iommu domains as any proposed improvement needs to alter a large number of different driver code paths. Combined with a lack of software based testing this makes improvement in this area very hard. iommufd wants several new page table operations: - More efficient map/unmap operations, using iommufd's batching logic - unmap that returns the physical addresses into a batch as it progresses - cut that allows splitting areas so large pages can have holes poked in them dynamically (ie guestmemfd hitless shared/private transitions) - More agressive freeing of table memory to avoid waste - Fragmenting large pages so that dirty tracking can be more granular - Reassembling large pages so that VMs can run at full IO performance in migration/dirty tracking error flows - KHO integration for kernel live upgrade Together these are algorithmically complex enough to be a very significant task to go and implement in all the page table formats we support. Just the "server" focused drivers use almost all the formats (ARMv8 S1&S2 / x86 PAE / AMDv1 / VT-D SS / RISCV) Instead of doing the duplicated work, this series takes the first step to consolidate the algorithms into one places. In spirit it is similar to the work Christoph did a few years back to pull the redundant get_user_pages() implementations out of the arch code into core MM. This unlocked a great deal of improvement in that space in the following years. I would like to see the same benefit in iommu as well. My first RFC showed a bigger picture with all most all formats and more algorithms. This series reorganizes that to be narrowly focused on just enough to convert the AMD driver to use the new mechanism. kunit tests are provided that allow good testing of the algorithms and all formats on x86, nothing is arch specific. AMD is one of the simpler options as the HW is quite uniform with few different options/bugs while still requiring the complicated contiguous pages support. The HW also has a very simple range based invalidation approach that is easy to implement. The AMD v1 and AMD v2 page table formats are implemented bit for bit identical to the current code, tested using a compare kunit test that checks against the io-pgtable version (on github, see below). Updating the AMD driver to replace the io-pgtable layer with the new stuff is fairly straightforward now. The layering is fixed up in the new version so that all the invalidation goes through function pointers. Several small fixing patches have come out of this as I've been fixing the problems that the test suite uncovers in the current code, and implementing the fixed version in iommupt. On performance, there is a quite wide variety of implementation designs across all the drivers. Looking at some key performance across the main formats: iommu_map(): pgsz ,avg new,old ns, min new,old ns , min % (+ve is better) 2^12, 53,66 , 51,63 , 19.19 (AMDV1) 256*2^12, 386,1909 , 367,1795 , 79.79 256*2^21, 362,1633 , 355,1556 , 77.77 2^12, 56,62 , 52,59 , 11.11 (AMDv2) 256*2^12, 405,1355 , 357,1292 , 72.72 256*2^21, 393,1160 , 358,1114 , 67.67 2^12, 55,65 , 53,62 , 14.14 (VTD second stage) 256*2^12, 391,518 , 332,512 , 35.35 256*2^21, 383,635 , 336,624 , 46.46 2^12, 57,65 , 55,63 , 12.12 (ARM 64 bit) 256*2^12, 380,389 , 361,369 , 2.02 256*2^21, 358,419 , 345,400 , 13.13 iommu_unmap(): pgsz ,avg new,old ns, min new,old ns , min % (+ve is better) 2^12, 69,88 , 65,85 , 23.23 (AMDv1) 256*2^12, 353,6498 , 331,6029 , 94.94 256*2^21, 373,6014 , 360,5706 , 93.93 2^12, 71,72 , 66,69 , 4.04 (AMDv2) 256*2^12, 228,891 , 206,871 , 76.76 256*2^21, 254,721 , 245,711 , 65.65 2^12, 69,87 , 65,82 , 20.20 (VTD second stage) 256*2^12, 210,321 , 200,315 , 36.36 256*2^21, 255,349 , 238,342 , 30.30 2^12, 72,77 , 68,74 , 8.08 (ARM 64 bit) 256*2^12, 521,357 , 447,346 , -29.29 256*2^21, 489,358 , 433,345 , -25.25 * Above numbers include additional patches to remove the iommu_pgsize() overheads. gcc 13.3.0, i7-12700 This version provides fairly consistent performance across formats. ARM unmap performance is quite different because this version supports contiguous pages and uses a very different algorithm for unmapping. Though why it is so worse compared to AMDv1 I haven't figured out yet. The per-format commits include a more detailed chart. There is a second branch: https://github.com/jgunthorpe/linux/commits/iommu_pt_all Containing supporting work and future steps: - ARM short descriptor (32 bit), ARM long descriptor (64 bit) formats - RISCV format and RISCV conversion https://github.com/jgunthorpe/linux/commits/iommu_pt_riscv - Support for a DMA incoherent HW page table walker - VT-D second stage format and VT-D conversion https://github.com/jgunthorpe/linux/commits/iommu_pt_vtd - DART v1 & v2 format - Draft of a iommufd 'cut' operation to break down huge pages - A compare test that checks the iommupt formats against the iopgtable interface, including updating AMD to have a working iopgtable and patches to make VT-D have an iopgtable for testing. - A performance test to micro-benchmark map and unmap against iogptable My strategy is to go one by one for the drivers: - AMD driver conversion - RISCV page table and driver - Intel VT-D driver and VTDSS page table - Flushing improvements for RISCV - ARM SMMUv3 And concurrently work on the algorithm side: - debugfs content dump, like VT-D has - Cut support - Increase/Decrease page size support - map/unmap batching - KHO As we make more algorithm improvements the value to convert the drivers increases. This is on github: https://github.com/jgunthorpe/linux/commits/iommu_pt v4: - Text grammar updates and kdoc fixes v3: https://patch.msgid.link/r/0-v4-0d6a6726a372+18959-iommu_pt_jgg@nvidia.com - Rebase on v6.16-rc3 - Integrate the HATS/HATDis changes - Remove 'default n' from kconfig - Remove unused 'PT_FIXED_TOP_LEVEL' - Improve comments and coumentation - Fix some compile warnings from kbuild robots v2: https://patch.msgid.link/r/0-v3-a93aab628dbc+521-iommu_pt_jgg@nvidia.com - Rebase on v6.16-rc2 - s/PT_ENTRY_WORD_SIZE/PT_ITEM_WORD_SIZE/s to follow the language better - Comment and documentation updates - Add PT_TOP_PHYS_MASK to help manage alignment restrictions on the top pointer - Add missed force_aperture = true - Make pt_iommu_deinit() take care of the not-yet-inited error case internally as AMD/RISCV/VTD all shared this logic - Change gather_range() into gather_range_pages() so it also deals with the page list. This makes the following cache flushing series simpler - Fix missed update of unmap->unmapped in some error cases - Change clear_contig() to order the gather more logically - Remove goto from the error handling in __map_range_leaf() - s/log2_/oalog2_/ in places where the argument is an oaddr_t - Pass the pts to pt_table_install64/32() - Do not use SIGN_EXTEND for the AMDv2 page table because of Vasant's information on how PASID 0 works. v1: https://patch.msgid.link/r/0-v2-5c26bde5c22d+58b-iommu_pt_jgg@nvidia.com - AMD driver only, many code changes RFC: https://lore.kernel.org/all/0-v1-01fa10580981+1d-iommu_pt_jgg@nvidia.com/ Alejandro Jimenez (1): iommu/amd: Use the generic iommu page table Jason Gunthorpe (14): genpt: Generic Page Table base API genpt: Add Documentation/ files iommupt: Add the basic structure of the iommu implementation iommupt: Add the AMD IOMMU v1 page table format iommupt: Add iova_to_phys op iommupt: Add unmap_pages op iommupt: Add map_pages op iommupt: Add read_and_clear_dirty op iommupt: Add a kunit test for Generic Page Table iommupt: Add a mock pagetable format for iommufd selftest to use iommufd: Change the selftest to use iommupt instead of xarray iommupt: Add the x86 64 bit page table format iommu/amd: Remove AMD io_pgtable support iommupt: Add a kunit test for the IOMMU implementation .clang-format | 1 + Documentation/driver-api/generic_pt.rst | 140 ++ Documentation/driver-api/index.rst | 1 + drivers/iommu/Kconfig | 2 + drivers/iommu/Makefile | 1 + drivers/iommu/amd/Kconfig | 5 +- drivers/iommu/amd/Makefile | 2 +- drivers/iommu/amd/amd_iommu.h | 1 - drivers/iommu/amd/amd_iommu_types.h | 109 +- drivers/iommu/amd/io_pgtable.c | 560 -------- drivers/iommu/amd/io_pgtable_v2.c | 370 ------ drivers/iommu/amd/iommu.c | 538 ++++---- drivers/iommu/generic_pt/.kunitconfig | 13 + drivers/iommu/generic_pt/Kconfig | 67 + drivers/iommu/generic_pt/fmt/Makefile | 26 + drivers/iommu/generic_pt/fmt/amdv1.h | 409 ++++++ drivers/iommu/generic_pt/fmt/defs_amdv1.h | 21 + drivers/iommu/generic_pt/fmt/defs_x86_64.h | 21 + drivers/iommu/generic_pt/fmt/iommu_amdv1.c | 15 + drivers/iommu/generic_pt/fmt/iommu_mock.c | 10 + drivers/iommu/generic_pt/fmt/iommu_template.h | 48 + drivers/iommu/generic_pt/fmt/iommu_x86_64.c | 11 + drivers/iommu/generic_pt/fmt/x86_64.h | 248 ++++ drivers/iommu/generic_pt/iommu_pt.h | 1149 +++++++++++++++++ drivers/iommu/generic_pt/kunit_generic_pt.h | 717 ++++++++++ drivers/iommu/generic_pt/kunit_iommu.h | 183 +++ drivers/iommu/generic_pt/kunit_iommu_pt.h | 451 +++++++ drivers/iommu/generic_pt/pt_common.h | 355 +++++ drivers/iommu/generic_pt/pt_defs.h | 323 +++++ drivers/iommu/generic_pt/pt_fmt_defaults.h | 193 +++ drivers/iommu/generic_pt/pt_iter.h | 636 +++++++++ drivers/iommu/generic_pt/pt_log2.h | 130 ++ drivers/iommu/io-pgtable.c | 4 - drivers/iommu/iommufd/Kconfig | 1 + drivers/iommu/iommufd/iommufd_test.h | 11 +- drivers/iommu/iommufd/selftest.c | 438 +++---- include/linux/generic_pt/common.h | 166 +++ include/linux/generic_pt/iommu.h | 270 ++++ include/linux/io-pgtable.h | 2 - tools/testing/selftests/iommu/iommufd.c | 60 +- tools/testing/selftests/iommu/iommufd_utils.h | 12 + 41 files changed, 6128 insertions(+), 1592 deletions(-) create mode 100644 Documentation/driver-api/generic_pt.rst delete mode 100644 drivers/iommu/amd/io_pgtable.c delete mode 100644 drivers/iommu/amd/io_pgtable_v2.c create mode 100644 drivers/iommu/generic_pt/.kunitconfig create mode 100644 drivers/iommu/generic_pt/Kconfig create mode 100644 drivers/iommu/generic_pt/fmt/Makefile create mode 100644 drivers/iommu/generic_pt/fmt/amdv1.h create mode 100644 drivers/iommu/generic_pt/fmt/defs_amdv1.h create mode 100644 drivers/iommu/generic_pt/fmt/defs_x86_64.h create mode 100644 drivers/iommu/generic_pt/fmt/iommu_amdv1.c create mode 100644 drivers/iommu/generic_pt/fmt/iommu_mock.c create mode 100644 drivers/iommu/generic_pt/fmt/iommu_template.h create mode 100644 drivers/iommu/generic_pt/fmt/iommu_x86_64.c create mode 100644 drivers/iommu/generic_pt/fmt/x86_64.h create mode 100644 drivers/iommu/generic_pt/iommu_pt.h create mode 100644 drivers/iommu/generic_pt/kunit_generic_pt.h create mode 100644 drivers/iommu/generic_pt/kunit_iommu.h create mode 100644 drivers/iommu/generic_pt/kunit_iommu_pt.h create mode 100644 drivers/iommu/generic_pt/pt_common.h create mode 100644 drivers/iommu/generic_pt/pt_defs.h create mode 100644 drivers/iommu/generic_pt/pt_fmt_defaults.h create mode 100644 drivers/iommu/generic_pt/pt_iter.h create mode 100644 drivers/iommu/generic_pt/pt_log2.h create mode 100644 include/linux/generic_pt/common.h create mode 100644 include/linux/generic_pt/iommu.h base-commit: 8da0d63bd5726ff656bfa1eacb45d6f5cce65616 -- 2.43.0

1 week, 2 days

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[PATCH RFC 00/35] mm: remove nth_page()

by David Hildenbrand

This is based on mm-unstable and was cross-compiled heavily. I should probably have already dropped the RFC label but I want to hear first if I ignored some corner case (SG entries?) and I need to do at least a bit more testing. I will only CC non-MM folks on the cover letter and the respective patch to not flood too many inboxes (the lists receive all patches). --- As discussed recently with Linus, nth_page() is just nasty and we would like to remove it. To recap, the reason we currently need nth_page() within a folio is because on some kernel configs (SPARSEMEM without SPARSEMEM_VMEMMAP), the memmap is allocated per memory section. While buddy allocations cannot cross memory section boundaries, hugetlb and dax folios can. So crossing a memory section means that "page++" could do the wrong thing. Instead, nth_page() on these problematic configs always goes from page->pfn, to the go from (++pfn)->page, which is rather nasty. Likely, many people have no idea when nth_page() is required and when it might be dropped. We refer to such problematic PFN ranges and "non-contiguous pages". If we only deal with "contiguous pages", there is not need for nth_page(). Besides that "obvious" folio case, we might end up using nth_page() within CMA allocations (again, could span memory sections), and in one corner case (kfence) when processing memblock allocations (again, could span memory sections). So let's handle all that, add sanity checks, and remove nth_page(). Patch #1 -> #5 : stop making SPARSEMEM_VMEMMAP user-selectable + cleanups Patch #6 -> #12 : disallow folios to have non-contiguous pages Patch #13 -> #20 : remove nth_page() usage within folios Patch #21 : disallow CMA allocations of non-contiguous pages Patch #22 -> #31 : sanity+check + remove nth_page() usage within SG entry Patch #32 : sanity-check + remove nth_page() usage in unpin_user_page_range_dirty_lock() Patch #33 : remove nth_page() in kfence Patch #34 : adjust stale comment regarding nth_page Patch #35 : mm: remove nth_page() A lot of this is inspired from the discussion at [1] between Linus, Jason and me, so cudos to them. [1] https://lore.kernel.org/all/CAHk-=wiCYfNp4AJLBORU-c7ZyRBUp66W2-Et6cdQ4REx-G… Cc: Andrew Morton <akpm(a)linux-foundation.org> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Jason Gunthorpe <jgg(a)nvidia.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: "Liam R. Howlett" <Liam.Howlett(a)oracle.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Jens Axboe <axboe(a)kernel.dk> Cc: Marek Szyprowski <m.szyprowski(a)samsung.com> Cc: Robin Murphy <robin.murphy(a)arm.com> Cc: John Hubbard <jhubbard(a)nvidia.com> Cc: Peter Xu <peterx(a)redhat.com> Cc: Alexander Potapenko <glider(a)google.com> Cc: Marco Elver <elver(a)google.com> Cc: Dmitry Vyukov <dvyukov(a)google.com> Cc: Brendan Jackman <jackmanb(a)google.com> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Zi Yan <ziy(a)nvidia.com> Cc: Dennis Zhou <dennis(a)kernel.org> Cc: Tejun Heo <tj(a)kernel.org> Cc: Christoph Lameter <cl(a)gentwo.org> Cc: Muchun Song <muchun.song(a)linux.dev> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: x86(a)kernel.org Cc: linux-arm-kernel(a)lists.infradead.org Cc: linux-mips(a)vger.kernel.org Cc: linux-s390(a)vger.kernel.org Cc: linux-crypto(a)vger.kernel.org Cc: linux-ide(a)vger.kernel.org Cc: intel-gfx(a)lists.freedesktop.org Cc: dri-devel(a)lists.freedesktop.org Cc: linux-mmc(a)vger.kernel.org Cc: linux-arm-kernel(a)axis.com Cc: linux-scsi(a)vger.kernel.org Cc: kvm(a)vger.kernel.org Cc: virtualization(a)lists.linux.dev Cc: linux-mm(a)kvack.org Cc: io-uring(a)vger.kernel.org Cc: iommu(a)lists.linux.dev Cc: kasan-dev(a)googlegroups.com Cc: wireguard(a)lists.zx2c4.com Cc: netdev(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Cc: linux-riscv(a)lists.infradead.org David Hildenbrand (35): mm: stop making SPARSEMEM_VMEMMAP user-selectable arm64: Kconfig: drop superfluous "select SPARSEMEM_VMEMMAP" s390/Kconfig: drop superfluous "select SPARSEMEM_VMEMMAP" x86/Kconfig: drop superfluous "select SPARSEMEM_VMEMMAP" wireguard: selftests: remove CONFIG_SPARSEMEM_VMEMMAP=y from qemu kernel config mm/page_alloc: reject unreasonable folio/compound page sizes in alloc_contig_range_noprof() mm/memremap: reject unreasonable folio/compound page sizes in memremap_pages() mm/hugetlb: check for unreasonable folio sizes when registering hstate mm/mm_init: make memmap_init_compound() look more like prep_compound_page() mm/hugetlb: cleanup hugetlb_folio_init_tail_vmemmap() mm: sanity-check maximum folio size in folio_set_order() mm: limit folio/compound page sizes in problematic kernel configs mm: simplify folio_page() and folio_page_idx() mm/mm/percpu-km: drop nth_page() usage within single allocation fs: hugetlbfs: remove nth_page() usage within folio in adjust_range_hwpoison() mm/pagewalk: drop nth_page() usage within folio in folio_walk_start() mm/gup: drop nth_page() usage within folio when recording subpages io_uring/zcrx: remove "struct io_copy_cache" and one nth_page() usage io_uring/zcrx: remove nth_page() usage within folio mips: mm: convert __flush_dcache_pages() to __flush_dcache_folio_pages() mm/cma: refuse handing out non-contiguous page ranges dma-remap: drop nth_page() in dma_common_contiguous_remap() scatterlist: disallow non-contigous page ranges in a single SG entry ata: libata-eh: drop nth_page() usage within SG entry drm/i915/gem: drop nth_page() usage within SG entry mspro_block: drop nth_page() usage within SG entry memstick: drop nth_page() usage within SG entry mmc: drop nth_page() usage within SG entry scsi: core: drop nth_page() usage within SG entry vfio/pci: drop nth_page() usage within SG entry crypto: remove nth_page() usage within SG entry mm/gup: drop nth_page() usage in unpin_user_page_range_dirty_lock() kfence: drop nth_page() usage block: update comment of "struct bio_vec" regarding nth_page() mm: remove nth_page() arch/arm64/Kconfig | 1 - arch/mips/include/asm/cacheflush.h | 11 +++-- arch/mips/mm/cache.c | 8 ++-- arch/s390/Kconfig | 1 - arch/x86/Kconfig | 1 - crypto/ahash.c | 4 +- crypto/scompress.c | 8 ++-- drivers/ata/libata-sff.c | 6 +-- drivers/gpu/drm/i915/gem/i915_gem_pages.c | 2 +- drivers/memstick/core/mspro_block.c | 3 +- drivers/memstick/host/jmb38x_ms.c | 3 +- drivers/memstick/host/tifm_ms.c | 3 +- drivers/mmc/host/tifm_sd.c | 4 +- drivers/mmc/host/usdhi6rol0.c | 4 +- drivers/scsi/scsi_lib.c | 3 +- drivers/scsi/sg.c | 3 +- drivers/vfio/pci/pds/lm.c | 3 +- drivers/vfio/pci/virtio/migrate.c | 3 +- fs/hugetlbfs/inode.c | 25 ++++------ include/crypto/scatterwalk.h | 4 +- include/linux/bvec.h | 7 +-- include/linux/mm.h | 48 +++++++++++++++---- include/linux/page-flags.h | 5 +- include/linux/scatterlist.h | 4 +- io_uring/zcrx.c | 34 ++++--------- kernel/dma/remap.c | 2 +- mm/Kconfig | 3 +- mm/cma.c | 36 +++++++++----- mm/gup.c | 13 +++-- mm/hugetlb.c | 23 ++++----- mm/internal.h | 1 + mm/kfence/core.c | 17 ++++--- mm/memremap.c | 3 ++ mm/mm_init.c | 13 ++--- mm/page_alloc.c | 5 +- mm/pagewalk.c | 2 +- mm/percpu-km.c | 2 +- mm/util.c | 33 +++++++++++++ tools/testing/scatterlist/linux/mm.h | 1 - .../selftests/wireguard/qemu/kernel.config | 1 - 40 files changed, 203 insertions(+), 150 deletions(-) base-commit: c0e3b3f33ba7b767368de4afabaf7c1ddfdc3872 -- 2.50.1

1 week, 3 days

16
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[PATCH bpf-next v3 1/2] bpf: add bpf_strcasestr,bpf_strncasestr kfuncs

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> bpf_strcasestr() and bpf_strncasestr() functions perform same like bpf_strstr() and bpf_strnstr() except ignoring the case of the characters. Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- kernel/bpf/helpers.c | 97 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 76 insertions(+), 21 deletions(-) diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index c9fab9a356df..db319aa61c3f 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -3675,34 +3675,21 @@ __bpf_kfunc int bpf_strcspn(const char *s__ign, const char *reject__ign) return -EFAULT; } -/** - * bpf_strnstr - Find the first substring in a length-limited string - * @s1__ign: The string to be searched - * @s2__ign: The string to search for - * @len: the maximum number of characters to search - * - * Return: - * * >=0 - Index of the first character of the first occurrence of @s2__ign - * within the first @len characters of @s1__ign - * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign - * * %-EFAULT - Cannot read one of the strings - * * %-E2BIG - One of the strings is too large - * * %-ERANGE - One of the strings is outside of kernel address space - */ -__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len) +static int __bpf_strnstr(const char *s1, const char *s2, size_t len, + bool ignore_case) { char c1, c2; int i, j; - if (!copy_from_kernel_nofault_allowed(s1__ign, 1) || - !copy_from_kernel_nofault_allowed(s2__ign, 1)) { + if (!copy_from_kernel_nofault_allowed(s1, 1) || + !copy_from_kernel_nofault_allowed(s2, 1)) { return -ERANGE; } guard(pagefault)(); for (i = 0; i < XATTR_SIZE_MAX; i++) { for (j = 0; i + j <= len && j < XATTR_SIZE_MAX; j++) { - __get_kernel_nofault(&c2, s2__ign + j, char, err_out); + __get_kernel_nofault(&c2, s2 + j, char, err_out); if (c2 == '\0') return i; /* @@ -3712,7 +3699,13 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len */ if (i + j == len) break; - __get_kernel_nofault(&c1, s1__ign + j, char, err_out); + __get_kernel_nofault(&c1, s1 + j, char, err_out); + + if (ignore_case) { + c1 = tolower(c1); + c2 = tolower(c2); + } + if (c1 == '\0') return -ENOENT; if (c1 != c2) @@ -3722,7 +3715,7 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len return -E2BIG; if (i + j == len) return -ENOENT; - s1__ign++; + s1++; } return -E2BIG; err_out: @@ -3744,8 +3737,68 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len */ __bpf_kfunc int bpf_strstr(const char *s1__ign, const char *s2__ign) { - return bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX); + return __bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX, false); +} + +/** + * bpf_strcasestr - Find the first substring in a string, ignoring the case of + * the characters + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within @s1__ign + * * %-ENOENT - @s2__ign is not a substring of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strcasestr(const char *s1__ign, const char *s2__ign) +{ + return __bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX, true); } + +/** + * bpf_strnstr - Find the first substring in a length-limited string + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * @len: the maximum number of characters to search + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within the first @len characters of @s1__ign + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len) +{ + return __bpf_strnstr(s1__ign, s2__ign, len, false); +} + +/** + * bpf_strnstr - Find the first substring in a length-limited string, ignoring + * the case of the characters + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * @len: the maximum number of characters to search + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within the first @len characters of @s1__ign + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strncasestr(const char *s1__ign, const char *s2__ign, + size_t len) +{ + return __bpf_strnstr(s1__ign, s2__ign, len, true); +} + #ifdef CONFIG_KEYS /** * bpf_lookup_user_key - lookup a key by its serial @@ -4367,7 +4420,9 @@ BTF_ID_FLAGS(func, bpf_strnlen); BTF_ID_FLAGS(func, bpf_strspn); BTF_ID_FLAGS(func, bpf_strcspn); BTF_ID_FLAGS(func, bpf_strstr); +BTF_ID_FLAGS(func, bpf_strcasestr); BTF_ID_FLAGS(func, bpf_strnstr); +BTF_ID_FLAGS(func, bpf_strncasestr); #if defined(CONFIG_BPF_LSM) && defined(CONFIG_CGROUPS) BTF_ID_FLAGS(func, bpf_cgroup_read_xattr, KF_RCU) #endif -- 2.51.0

1 week, 3 days

2
2
0 0

[PATCH bpf-next v4 2/2] selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Add tests for new kfuncs bpf_strcasestr() and bpf_strncasestr(). Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- .../testing/selftests/bpf/prog_tests/string_kfuncs.c | 2 ++ .../selftests/bpf/progs/string_kfuncs_failure1.c | 12 ++++++++++++ .../selftests/bpf/progs/string_kfuncs_failure2.c | 2 ++ .../selftests/bpf/progs/string_kfuncs_success.c | 10 ++++++++++ 4 files changed, 26 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c b/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c index 4d66fad3c8bd..0f3bf594e7a5 100644 --- a/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c +++ b/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c @@ -20,7 +20,9 @@ static const char * const test_cases[] = { "strcspn_str", "strcspn_reject", "strstr", + "strcasestr", "strnstr", + "strncasestr", }; void run_too_long_tests(void) diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c b/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c index 99d72c68f76a..826e6b6aff7e 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c @@ -45,8 +45,12 @@ SEC("syscall") __retval(USER_PTR_ERR)int test_strcspn_null1(void *ctx) { return SEC("syscall") __retval(USER_PTR_ERR)int test_strcspn_null2(void *ctx) { return bpf_strcspn("hello", NULL); } SEC("syscall") __retval(USER_PTR_ERR)int test_strstr_null1(void *ctx) { return bpf_strstr(NULL, "hello"); } SEC("syscall") __retval(USER_PTR_ERR)int test_strstr_null2(void *ctx) { return bpf_strstr("hello", NULL); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strcasestr_null1(void *ctx) { return bpf_strcasestr(NULL, "hello"); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strcasestr_null2(void *ctx) { return bpf_strcasestr("hello", NULL); } SEC("syscall") __retval(USER_PTR_ERR)int test_strnstr_null1(void *ctx) { return bpf_strnstr(NULL, "hello", 1); } SEC("syscall") __retval(USER_PTR_ERR)int test_strnstr_null2(void *ctx) { return bpf_strnstr("hello", NULL, 1); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strncasestr_null1(void *ctx) { return bpf_strncasestr(NULL, "hello", 1); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strncasestr_null2(void *ctx) { return bpf_strncasestr("hello", NULL, 1); } /* Passing userspace ptr to string kfuncs */ SEC("syscall") __retval(USER_PTR_ERR) int test_strcmp_user_ptr1(void *ctx) { return bpf_strcmp(user_ptr, "hello"); } @@ -65,8 +69,12 @@ SEC("syscall") __retval(USER_PTR_ERR) int test_strcspn_user_ptr1(void *ctx) { re SEC("syscall") __retval(USER_PTR_ERR) int test_strcspn_user_ptr2(void *ctx) { return bpf_strcspn("hello", user_ptr); } SEC("syscall") __retval(USER_PTR_ERR) int test_strstr_user_ptr1(void *ctx) { return bpf_strstr(user_ptr, "hello"); } SEC("syscall") __retval(USER_PTR_ERR) int test_strstr_user_ptr2(void *ctx) { return bpf_strstr("hello", user_ptr); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strcasestr_user_ptr1(void *ctx) { return bpf_strcasestr(user_ptr, "hello"); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strcasestr_user_ptr2(void *ctx) { return bpf_strcasestr("hello", user_ptr); } SEC("syscall") __retval(USER_PTR_ERR) int test_strnstr_user_ptr1(void *ctx) { return bpf_strnstr(user_ptr, "hello", 1); } SEC("syscall") __retval(USER_PTR_ERR) int test_strnstr_user_ptr2(void *ctx) { return bpf_strnstr("hello", user_ptr, 1); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strncasestr_user_ptr1(void *ctx) { return bpf_strncasestr(user_ptr, "hello", 1); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strncasestr_user_ptr2(void *ctx) { return bpf_strncasestr("hello", user_ptr, 1); } #endif /* __TARGET_ARCH_s390 */ @@ -87,7 +95,11 @@ SEC("syscall") __retval(-EFAULT) int test_strcspn_pagefault1(void *ctx) { return SEC("syscall") __retval(-EFAULT) int test_strcspn_pagefault2(void *ctx) { return bpf_strcspn("hello", invalid_kern_ptr); } SEC("syscall") __retval(-EFAULT) int test_strstr_pagefault1(void *ctx) { return bpf_strstr(invalid_kern_ptr, "hello"); } SEC("syscall") __retval(-EFAULT) int test_strstr_pagefault2(void *ctx) { return bpf_strstr("hello", invalid_kern_ptr); } +SEC("syscall") __retval(-EFAULT) int test_strcasestr_pagefault1(void *ctx) { return bpf_strcasestr(invalid_kern_ptr, "hello"); } +SEC("syscall") __retval(-EFAULT) int test_strcasestr_pagefault2(void *ctx) { return bpf_strcasestr("hello", invalid_kern_ptr); } SEC("syscall") __retval(-EFAULT) int test_strnstr_pagefault1(void *ctx) { return bpf_strnstr(invalid_kern_ptr, "hello", 1); } SEC("syscall") __retval(-EFAULT) int test_strnstr_pagefault2(void *ctx) { return bpf_strnstr("hello", invalid_kern_ptr, 1); } +SEC("syscall") __retval(-EFAULT) int test_strncasestr_pagefault1(void *ctx) { return bpf_strncasestr(invalid_kern_ptr, "hello", 1); } +SEC("syscall") __retval(-EFAULT) int test_strncasestr_pagefault2(void *ctx) { return bpf_strncasestr("hello", invalid_kern_ptr, 1); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c b/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c index e41cc5601994..05e1da1f250f 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c @@ -19,6 +19,8 @@ SEC("syscall") int test_strspn_accept_too_long(void *ctx) { return bpf_strspn("b SEC("syscall") int test_strcspn_str_too_long(void *ctx) { return bpf_strcspn(long_str, "b"); } SEC("syscall") int test_strcspn_reject_too_long(void *ctx) { return bpf_strcspn("b", long_str); } SEC("syscall") int test_strstr_too_long(void *ctx) { return bpf_strstr(long_str, "hello"); } +SEC("syscall") int test_strcasestr_too_long(void *ctx) { return bpf_strcasestr(long_str, "hello"); } SEC("syscall") int test_strnstr_too_long(void *ctx) { return bpf_strnstr(long_str, "hello", sizeof(long_str)); } +SEC("syscall") int test_strncasestr_too_long(void *ctx) { return bpf_strncasestr(long_str, "hello", sizeof(long_str)); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_success.c b/tools/testing/selftests/bpf/progs/string_kfuncs_success.c index 2e3498e37b9c..a8513964516b 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_success.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_success.c @@ -33,8 +33,11 @@ __test(11) int test_strnlen(void *ctx) { return bpf_strnlen(str, 12); } __test(5) int test_strspn(void *ctx) { return bpf_strspn(str, "ehlo"); } __test(2) int test_strcspn(void *ctx) { return bpf_strcspn(str, "lo"); } __test(6) int test_strstr_found(void *ctx) { return bpf_strstr(str, "world"); } +__test(6) int test_strcasestr_found(void *ctx) { return bpf_strcasestr(str, "woRLD"); } __test(-ENOENT) int test_strstr_notfound(void *ctx) { return bpf_strstr(str, "hi"); } +__test(-ENOENT) int test_strcasestr_notfound(void *ctx) { return bpf_strcasestr(str, "hi"); } __test(0) int test_strstr_empty(void *ctx) { return bpf_strstr(str, ""); } +__test(0) int test_strcasestr_empty(void *ctx) { return bpf_strcasestr(str, ""); } __test(0) int test_strnstr_found1(void *ctx) { return bpf_strnstr("", "", 0); } __test(0) int test_strnstr_found2(void *ctx) { return bpf_strnstr(str, "hello", 5); } __test(0) int test_strnstr_found3(void *ctx) { return bpf_strnstr(str, "hello", 6); } @@ -42,5 +45,12 @@ __test(-ENOENT) int test_strnstr_notfound1(void *ctx) { return bpf_strnstr(str, __test(-ENOENT) int test_strnstr_notfound2(void *ctx) { return bpf_strnstr(str, "hello", 4); } __test(-ENOENT) int test_strnstr_notfound3(void *ctx) { return bpf_strnstr("", "a", 0); } __test(0) int test_strnstr_empty(void *ctx) { return bpf_strnstr(str, "", 1); } +__test(0) int test_strncasestr_found1(void *ctx) { return bpf_strncasestr("", "", 0); } +__test(0) int test_strncasestr_found2(void *ctx) { return bpf_strncasestr(str, "heLLO", 5); } +__test(0) int test_strncasestr_found3(void *ctx) { return bpf_strncasestr(str, "heLLO", 6); } +__test(-ENOENT) int test_strncasestr_notfound1(void *ctx) { return bpf_strncasestr(str, "hi", 10); } +__test(-ENOENT) int test_strncasestr_notfound2(void *ctx) { return bpf_strncasestr(str, "hello", 4); } +__test(-ENOENT) int test_strncasestr_notfound3(void *ctx) { return bpf_strncasestr("", "a", 0); } +__test(0) int test_strncasestr_empty(void *ctx) { return bpf_strncasestr(str, "", 1); } char _license[] SEC("license") = "GPL"; -- 2.51.0

1 week, 3 days

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[PATCH bpf-next v4 1/2] bpf: add bpf_strcasestr,bpf_strncasestr kfuncs

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> bpf_strcasestr() and bpf_strncasestr() functions perform same like bpf_strstr() and bpf_strnstr() except ignoring the case of the characters. Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- kernel/bpf/helpers.c | 98 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 77 insertions(+), 21 deletions(-) diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index c9fab9a356df..485f65fbd97f 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -3675,34 +3675,21 @@ __bpf_kfunc int bpf_strcspn(const char *s__ign, const char *reject__ign) return -EFAULT; } -/** - * bpf_strnstr - Find the first substring in a length-limited string - * @s1__ign: The string to be searched - * @s2__ign: The string to search for - * @len: the maximum number of characters to search - * - * Return: - * * >=0 - Index of the first character of the first occurrence of @s2__ign - * within the first @len characters of @s1__ign - * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign - * * %-EFAULT - Cannot read one of the strings - * * %-E2BIG - One of the strings is too large - * * %-ERANGE - One of the strings is outside of kernel address space - */ -__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len) +static int __bpf_strnstr(const char *s1, const char *s2, size_t len, + bool ignore_case) { char c1, c2; int i, j; - if (!copy_from_kernel_nofault_allowed(s1__ign, 1) || - !copy_from_kernel_nofault_allowed(s2__ign, 1)) { + if (!copy_from_kernel_nofault_allowed(s1, 1) || + !copy_from_kernel_nofault_allowed(s2, 1)) { return -ERANGE; } guard(pagefault)(); for (i = 0; i < XATTR_SIZE_MAX; i++) { for (j = 0; i + j <= len && j < XATTR_SIZE_MAX; j++) { - __get_kernel_nofault(&c2, s2__ign + j, char, err_out); + __get_kernel_nofault(&c2, s2 + j, char, err_out); if (c2 == '\0') return i; /* @@ -3712,7 +3699,13 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len */ if (i + j == len) break; - __get_kernel_nofault(&c1, s1__ign + j, char, err_out); + __get_kernel_nofault(&c1, s1 + j, char, err_out); + + if (ignore_case) { + c1 = tolower(c1); + c2 = tolower(c2); + } + if (c1 == '\0') return -ENOENT; if (c1 != c2) @@ -3722,7 +3715,7 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len return -E2BIG; if (i + j == len) return -ENOENT; - s1__ign++; + s1++; } return -E2BIG; err_out: @@ -3744,8 +3737,69 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len */ __bpf_kfunc int bpf_strstr(const char *s1__ign, const char *s2__ign) { - return bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX); + return __bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX, false); +} + +/** + * bpf_strcasestr - Find the first substring in a string, ignoring the case of + * the characters + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within @s1__ign + * * %-ENOENT - @s2__ign is not a substring of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strcasestr(const char *s1__ign, const char *s2__ign) +{ + return __bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX, true); } + +/** + * bpf_strnstr - Find the first substring in a length-limited string + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * @len: the maximum number of characters to search + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within the first @len characters of @s1__ign + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, + size_t len) +{ + return __bpf_strnstr(s1__ign, s2__ign, len, false); +} + +/** + * bpf_strncasestr - Find the first substring in a length-limited string, + * ignoring the case of the characters + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * @len: the maximum number of characters to search + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within the first @len characters of @s1__ign + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strncasestr(const char *s1__ign, const char *s2__ign, + size_t len) +{ + return __bpf_strnstr(s1__ign, s2__ign, len, true); +} + #ifdef CONFIG_KEYS /** * bpf_lookup_user_key - lookup a key by its serial @@ -4367,7 +4421,9 @@ BTF_ID_FLAGS(func, bpf_strnlen); BTF_ID_FLAGS(func, bpf_strspn); BTF_ID_FLAGS(func, bpf_strcspn); BTF_ID_FLAGS(func, bpf_strstr); +BTF_ID_FLAGS(func, bpf_strcasestr); BTF_ID_FLAGS(func, bpf_strnstr); +BTF_ID_FLAGS(func, bpf_strncasestr); #if defined(CONFIG_BPF_LSM) && defined(CONFIG_CGROUPS) BTF_ID_FLAGS(func, bpf_cgroup_read_xattr, KF_RCU) #endif -- 2.51.0

1 week, 3 days

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[PATCH 00/11] vdso: Various cleanups

by Thomas Weißschuh

Various cleanups to the generic vDSO infrastructure and a patch for ARM which was never applied. This series has one trivial syntactic conflict with "dso/datastore: Allow prefaulting by mlockall()" [0] and a semantic one with "sparc64: vdso: Switch to generic vDSO library" [1], which still uses the removed GENERIC_VDSO_DATA_STORE. [0] https://lore.kernel.org/lkml/20250812-vdso-mlockall-v1-0-2f49ba7cf819@linut… [1] https://lore.kernel.org/lkml/20250815-vdso-sparc64-generic-2-v2-0-b5ff80672… Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> --- Rasmus Villemoes (1): ARM: VDSO: remove cntvct_ok global variable Thomas Weißschuh (10): vdso/datastore: Gate time data behind CONFIG_GENERIC_GETTIMEOFDAY vdso: Move ENABLE_COMPAT_VDSO from core to arm64 vdso/gettimeofday: Remove !CONFIG_TIME_NS stubs time: Build generic update_vsyscall() only with generic time vDSO riscv: vdso: Untangle kconfig logic vdso: Drop kconfig GENERIC_VDSO_32 vdso: Drop kconfig GENERIC_COMPAT_VDSO vdso: Drop kconfig GENERIC_VDSO_DATA_STORE vdso: Drop kconfig GENERIC_VDSO_TIME_NS vdso: Gate VDSO_GETRANDOM behind HAVE_GENERIC_VDSO arch/Kconfig | 2 +- arch/arm/include/asm/vdso/vsyscall.h | 2 -- arch/arm/kernel/vdso.c | 10 +++------ arch/arm/mm/Kconfig | 2 -- arch/arm64/Kconfig | 3 --- arch/arm64/include/asm/vdso/compat_barrier.h | 7 +++--- arch/arm64/include/asm/vdso/compat_gettimeofday.h | 6 ++--- arch/arm64/include/asm/vdso/gettimeofday.h | 8 +++++++ arch/arm64/kernel/vdso32/Makefile | 1 - arch/loongarch/Kconfig | 2 -- arch/mips/Kconfig | 1 - arch/powerpc/Kconfig | 2 -- arch/riscv/Kconfig | 12 +++++----- arch/s390/Kconfig | 2 -- arch/x86/Kconfig | 3 --- include/asm-generic/vdso/vsyscall.h | 4 ---- include/vdso/datapage.h | 9 +------- init/Kconfig | 2 +- kernel/time/Makefile | 2 +- lib/vdso/Kconfig | 25 +-------------------- lib/vdso/Makefile | 2 +- lib/vdso/datastore.c | 6 ++--- lib/vdso/gettimeofday.c | 27 ----------------------- tools/testing/selftests/pidfd/config | 1 - 24 files changed, 31 insertions(+), 110 deletions(-) --- base-commit: 3cd1f6bc6aa056cfd32946f9ce0aa3eb3db180e8 change-id: 20250825-vdso-cleanups-fd6fbb32fc19 Best regards, -- Thomas Weißschuh <thomas.weissschuh(a)linutronix.de>

1 week, 3 days

3
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[PATCH net v2 9/9] selftests: drv-net: pp_alloc_fail: add necessary optoins to config

by Jakub Kicinski

Add kernel config for error injection as needed by pp_alloc_fail.py Reviewed-by: Simon Horman <horms(a)kernel.org> Fixes: 9da271f825e4 ("selftests: drv-net-hw: add test for memory allocation failures with page pool") Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: joe(a)dama.to CC: willemb(a)google.com CC: sdf(a)fomichev.me CC: almasrymina(a)google.com CC: linux-kselftest(a)vger.kernel.org --- tools/testing/selftests/drivers/net/hw/config | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/drivers/net/hw/config b/tools/testing/selftests/drivers/net/hw/config index e8a06aa1471c..2307aa001be1 100644 --- a/tools/testing/selftests/drivers/net/hw/config +++ b/tools/testing/selftests/drivers/net/hw/config @@ -1,3 +1,7 @@ +CONFIG_FAIL_FUNCTION=y +CONFIG_FAULT_INJECTION=y +CONFIG_FAULT_INJECTION_DEBUG_FS=y +CONFIG_FUNCTION_ERROR_INJECTION=y CONFIG_IO_URING=y CONFIG_IPV6=y CONFIG_IPV6_GRE=y -- 2.51.0

1 week, 3 days

2
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[PATCH net v2 8/9] selftests: drv-net: pp_alloc_fail: lower traffic expectations

by Jakub Kicinski

Lower the expected level of traffic in the pp_alloc_fail test and calculate failure counter thresholds based on the traffic rather than using a fixed constant. We only have "QEMU HW" in NIPA right now, and the test (due to debug dependencies) only works on debug kernels in the first place. We need some place for it to pass otherwise it seems to be bit rotting. So lower the traffic threshold so that it passes on QEMU and with a debug kernel... Reviewed-by: Simon Horman <horms(a)kernel.org> Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- v2: - use seen_fails in 2 more places CC: shuah(a)kernel.org CC: johndale(a)cisco.com CC: linux-kselftest(a)vger.kernel.org --- .../selftests/drivers/net/hw/pp_alloc_fail.py | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py index fc66b7a7b149..2a51b60df8a1 100755 --- a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py +++ b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py @@ -7,6 +7,7 @@ Test driver resilience vs page pool allocation failures. import errno import time +import math import os from lib.py import ksft_run, ksft_exit, ksft_pr from lib.py import KsftSkipEx, KsftFailEx @@ -62,7 +63,7 @@ from lib.py import cmd, tool, GenerateTraffic stat1 = get_stats() time.sleep(1) stat2 = get_stats() - if stat2['rx-packets'] - stat1['rx-packets'] < 15000: + if stat2['rx-packets'] - stat1['rx-packets'] < 4000: raise KsftFailEx("Traffic seems low:", stat2['rx-packets'] - stat1['rx-packets']) @@ -89,11 +90,16 @@ from lib.py import cmd, tool, GenerateTraffic time.sleep(3) s2 = get_stats() - if s2['rx-alloc-fail'] - s1['rx-alloc-fail'] < 1: + seen_fails = s2['rx-alloc-fail'] - s1['rx-alloc-fail'] + if seen_fails < 1: raise KsftSkipEx("Allocation failures not increasing") - if s2['rx-alloc-fail'] - s1['rx-alloc-fail'] < 100: - raise KsftSkipEx("Allocation increasing too slowly", s2['rx-alloc-fail'] - s1['rx-alloc-fail'], - "packets:", s2['rx-packets'] - s1['rx-packets']) + pkts = s2['rx-packets'] - s1['rx-packets'] + # Expecting one failure per 512 buffers, 3.1x safety margin + want_fails = math.floor(pkts / 512 / 3.1) + if seen_fails < want_fails: + raise KsftSkipEx("Allocation increasing too slowly", seen_fails, + "packets:", pkts) + ksft_pr(f"Seen: pkts:{pkts} fails:{seen_fails} (pass thrs:{want_fails})") # Basic failures are fine, try to wobble some settings to catch extra failures check_traffic_flowing() -- 2.51.0

1 week, 3 days

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[PATCH net v2 7/9] selftests: drv-net: fix linter warnings in pp_alloc_fail

by Jakub Kicinski

Fix linter warnings, it's a bit hard to check for new ones otherwise. W0311: Bad indentation. Found 16 spaces, expected 12 (bad-indentation) C0114: Missing module docstring (missing-module-docstring) W1514: Using open without explicitly specifying an encoding (unspecified-encoding) C0116: Missing function or method docstring (missing-function-docstring) Reviewed-by: Simon Horman <horms(a)kernel.org> Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: johndale(a)cisco.com CC: linux-kselftest(a)vger.kernel.org --- .../selftests/drivers/net/hw/pp_alloc_fail.py | 20 +++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py index ad192fef3117..fc66b7a7b149 100755 --- a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py +++ b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py @@ -1,6 +1,10 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 +""" +Test driver resilience vs page pool allocation failures. +""" + import errno import time import os @@ -13,7 +17,8 @@ from lib.py import cmd, tool, GenerateTraffic def _write_fail_config(config): for key, value in config.items(): - with open("/sys/kernel/debug/fail_function/" + key, "w") as fp: + path = "/sys/kernel/debug/fail_function/" + with open(path + key, "w", encoding='ascii') as fp: fp.write(str(value) + "\n") @@ -22,8 +27,7 @@ from lib.py import cmd, tool, GenerateTraffic raise KsftSkipEx("Kernel built without function error injection (or DebugFS)") if not os.path.exists("/sys/kernel/debug/fail_function/page_pool_alloc_netmems"): - with open("/sys/kernel/debug/fail_function/inject", "w") as fp: - fp.write("page_pool_alloc_netmems\n") + _write_fail_config({"inject": "page_pool_alloc_netmems"}) _write_fail_config({ "verbose": 0, @@ -38,8 +42,7 @@ from lib.py import cmd, tool, GenerateTraffic return if os.path.exists("/sys/kernel/debug/fail_function/page_pool_alloc_netmems"): - with open("/sys/kernel/debug/fail_function/inject", "w") as fp: - fp.write("\n") + _write_fail_config({"inject": ""}) _write_fail_config({ "probability": 0, @@ -48,6 +51,10 @@ from lib.py import cmd, tool, GenerateTraffic def test_pp_alloc(cfg, netdevnl): + """ + Configure page pool allocation fail injection while traffic is running. + """ + def get_stats(): return netdevnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] @@ -105,7 +112,7 @@ from lib.py import cmd, tool, GenerateTraffic else: ksft_pr("ethtool -G change retval: did not succeed", new_g) else: - ksft_pr("ethtool -G change retval: did not try") + ksft_pr("ethtool -G change retval: did not try") time.sleep(0.1) check_traffic_flowing() @@ -119,6 +126,7 @@ from lib.py import cmd, tool, GenerateTraffic def main() -> None: + """ Ksft boiler plate main """ netdevnl = NetdevFamily() with NetDrvEpEnv(__file__, nsim_test=False) as cfg: -- 2.51.0

1 week, 3 days

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[PATCH net v2 5/9] selftests: drv-net: xdp: add test for interface level qstats

by Jakub Kicinski

Send a non-trivial number of packets and make sure that they are counted correctly in qstats. Per qstats specification XDP is the first layer of the stack so we should see Rx and Tx counters go up for packets which went thru XDP. Reviewed-by: Simon Horman <horms(a)kernel.org> Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: sdf(a)fomichev.me CC: linux-kselftest(a)vger.kernel.org CC: bpf(a)vger.kernel.org --- tools/testing/selftests/drivers/net/xdp.py | 91 +++++++++++++++++++++- 1 file changed, 89 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/drivers/net/xdp.py b/tools/testing/selftests/drivers/net/xdp.py index a7a4d97aa228..a148004e1c36 100755 --- a/tools/testing/selftests/drivers/net/xdp.py +++ b/tools/testing/selftests/drivers/net/xdp.py @@ -11,8 +11,9 @@ import string from dataclasses import dataclass from enum import Enum -from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_ne, ksft_pr -from lib.py import KsftFailEx, NetDrvEpEnv, EthtoolFamily, NlError +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_ge, ksft_ne, ksft_pr +from lib.py import KsftFailEx, NetDrvEpEnv +from lib.py import EthtoolFamily, NetdevFamily, NlError from lib.py import bkg, cmd, rand_port, wait_port_listen from lib.py import ip, bpftool, defer @@ -671,6 +672,88 @@ from lib.py import ip, bpftool, defer _validate_res(res, offset_lst, pkt_sz_lst) +def _test_xdp_native_ifc_stats(cfg, act): + cfg.require_cmd("socat") + + bpf_info = BPFProgInfo("xdp_prog", "xdp_native.bpf.o", "xdp", 1500) + prog_info = _load_xdp_prog(cfg, bpf_info) + port = rand_port() + + _set_xdp_map("map_xdp_setup", TestConfig.MODE.value, act.value) + _set_xdp_map("map_xdp_setup", TestConfig.PORT.value, port) + + # Discard the input, but we need a listener to avoid ICMP errors + rx_udp = f"socat -{cfg.addr_ipver} -T 2 -u UDP-RECV:{port},reuseport " + \ + "/dev/null" + # Listener runs on "remote" in case of XDP_TX + rx_host = cfg.remote if act == XDPAction.TX else None + # We want to spew 2000 packets quickly, bash seems to do a good enough job + tx_udp = f"exec 5<>/dev/udp/{cfg.addr}/{port}; " \ + "for i in `seq 2000`; do echo a >&5; done; exec 5>&-" + + cfg.wait_hw_stats_settle() + # Qstats have more clearly defined semantics than rtnetlink. + # XDP is the "first layer of the stack" so XDP packets should be counted + # as received and sent as if the decision was made in the routing layer. + before = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + with bkg(rx_udp, host=rx_host, exit_wait=True): + wait_port_listen(port, proto="udp", host=rx_host) + cmd(tx_udp, host=cfg.remote, shell=True) + + cfg.wait_hw_stats_settle() + after = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + ksft_ge(after['rx-packets'] - before['rx-packets'], 2000) + if act == XDPAction.TX: + ksft_ge(after['tx-packets'] - before['tx-packets'], 2000) + + expected_pkts = 2000 + stats = _get_stats(prog_info["maps"]["map_xdp_stats"]) + ksft_eq(stats[XDPStats.RX.value], expected_pkts, "XDP RX stats mismatch") + if act == XDPAction.TX: + ksft_eq(stats[XDPStats.TX.value], expected_pkts, "XDP TX stats mismatch") + + # Flip the ring count back and forth to make sure the stats from XDP rings + # don't get lost. + chans = cfg.ethnl.channels_get({'header': {'dev-index': cfg.ifindex}}) + if chans.get('combined-count', 0) > 1: + cfg.ethnl.channels_set({'header': {'dev-index': cfg.ifindex}, + 'combined-count': 1}) + cfg.ethnl.channels_set({'header': {'dev-index': cfg.ifindex}, + 'combined-count': chans['combined-count']}) + before = after + after = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + ksft_ge(after['rx-packets'], before['rx-packets']) + if act == XDPAction.TX: + ksft_ge(after['tx-packets'], before['tx-packets']) + + +def test_xdp_native_qstats_pass(cfg): + """ + Send 2000 messages, expect XDP_PASS, make sure the packets were counted + to interface level qstats (Rx). + """ + _test_xdp_native_ifc_stats(cfg, XDPAction.PASS) + + +def test_xdp_native_qstats_drop(cfg): + """ + Send 2000 messages, expect XDP_DROP, make sure the packets were counted + to interface level qstats (Rx). + """ + _test_xdp_native_ifc_stats(cfg, XDPAction.DROP) + + +def test_xdp_native_qstats_tx(cfg): + """ + Send 2000 messages, expect XDP_TX, make sure the packets were counted + to interface level qstats (Rx and Tx) + """ + _test_xdp_native_ifc_stats(cfg, XDPAction.TX) + + def main(): """ Main function to execute the XDP tests. @@ -682,6 +765,7 @@ from lib.py import ip, bpftool, defer """ with NetDrvEpEnv(__file__) as cfg: cfg.ethnl = EthtoolFamily() + cfg.netnl = NetdevFamily() ksft_run( [ test_xdp_native_pass_sb, @@ -694,6 +778,9 @@ from lib.py import ip, bpftool, defer test_xdp_native_adjst_tail_shrnk_data, test_xdp_native_adjst_head_grow_data, test_xdp_native_adjst_head_shrnk_data, + test_xdp_native_qstats_pass, + test_xdp_native_qstats_drop, + test_xdp_native_qstats_tx, ], args=(cfg,)) ksft_exit() -- 2.51.0

1 week, 3 days

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[PATCH net v2 4/9] selftests: drv-net: xdp: rename netnl to ethnl

by Jakub Kicinski

Test uses "netnl" for the ethtool family which is quite confusing (one would expect netdev family would use this name). No functional changes. Reviewed-by: Simon Horman <horms(a)kernel.org> Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: sdf(a)fomichev.me CC: linux-kselftest(a)vger.kernel.org CC: bpf(a)vger.kernel.org --- tools/testing/selftests/drivers/net/xdp.py | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/drivers/net/xdp.py b/tools/testing/selftests/drivers/net/xdp.py index 08fea4230759..a7a4d97aa228 100755 --- a/tools/testing/selftests/drivers/net/xdp.py +++ b/tools/testing/selftests/drivers/net/xdp.py @@ -541,11 +541,11 @@ from lib.py import ip, bpftool, defer The HDS threshold value. If the threshold is not supported or an error occurs, a default value of 1500 is returned. """ - netnl = cfg.netnl + ethnl = cfg.ethnl hds_thresh = 1500 try: - rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + rings = ethnl.rings_get({'header': {'dev-index': cfg.ifindex}}) if 'hds-thresh' not in rings: ksft_pr(f'hds-thresh not supported. Using default: {hds_thresh}') return hds_thresh @@ -562,7 +562,7 @@ from lib.py import ip, bpftool, defer Args: cfg: Configuration object containing network settings. - netnl: Network namespace or link object (not used in this function). + ethnl: Network namespace or link object (not used in this function). This function sets up the packet size and offset lists, then performs the head adjustment test by sending and receiving UDP packets. @@ -681,7 +681,7 @@ from lib.py import ip, bpftool, defer function to execute the tests. """ with NetDrvEpEnv(__file__) as cfg: - cfg.netnl = EthtoolFamily() + cfg.ethnl = EthtoolFamily() ksft_run( [ test_xdp_native_pass_sb, -- 2.51.0

1 week, 3 days

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[PATCH net v2] selftests: drv-net: update remaining Python init files

by Stanislav Fomichev

From: Jakub Kicinski <kuba(a)kernel.org> Convert remaining __init__ files similar to what we did in commit b615879dbfea ("selftests: drv-net: make linters happy with our imports") Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- v2: - remove tool from imports in driver __init__s it's not actually used v1: https://lore.kernel.org/20251007144326.1763309-1-kuba@kernel.org CC: shuah(a)kernel.org CC: willemb(a)google.com CC: daniel.zahka(a)gmail.com CC: linux-kselftest(a)vger.kernel.org --- .../drivers/net/hw/lib/py/__init__.py | 40 ++++++++++++++----- .../selftests/drivers/net/lib/py/__init__.py | 4 +- .../testing/selftests/net/lib/py/__init__.py | 29 ++++++++++++-- 3 files changed, 57 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py index 0ceb297e7757..fb010a48a5a1 100644 --- a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py @@ -1,5 +1,13 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Driver test environment (hardware-only tests). +NetDrvEnv and NetDrvEpEnv are the main environment classes. +Former is for local host only tests, latter creates / connects +to a remote endpoint. See NIPA wiki for more information about +running and writing driver tests. +""" + import sys from pathlib import Path @@ -8,26 +16,36 @@ KSFT_DIR = (Path(__file__).parent / "../../../../..").resolve() try: sys.path.append(KSFT_DIR.as_posix()) - from net.lib.py import * - from drivers.net.lib.py import * - # Import one by one to avoid pylint false positives + from net.lib.py import NetNS, NetNSEnter, NetdevSimDev from net.lib.py import EthtoolFamily, NetdevFamily, NetshaperFamily, \ NlError, RtnlFamily, DevlinkFamily, PSPFamily from net.lib.py import CmdExitFailure - from net.lib.py import bkg, cmd, defer, ethtool, fd_read_timeout, ip, \ - rand_port, tool, wait_port_listen - from net.lib.py import fd_read_timeout + from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ + fd_read_timeout, ip, rand_port, wait_port_listen, wait_file from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ ksft_setup from net.lib.py import ksft_eq, ksft_ge, ksft_in, ksft_is, ksft_lt, \ ksft_ne, ksft_not_in, ksft_raises, ksft_true, ksft_gt, ksft_not_none - from net.lib.py import NetNSEnter - from drivers.net.lib.py import GenerateTraffic + from drivers.net.lib.py import GenerateTraffic, Remote from drivers.net.lib.py import NetDrvEnv, NetDrvEpEnv + + __all__ = ["NetNS", "NetNSEnter", "NetdevSimDev", + "EthtoolFamily", "NetdevFamily", "NetshaperFamily", + "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", + "CmdExitFailure", + "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", + "fd_read_timeout", "ip", "rand_port", + "wait_port_listen", "wait_file", + "KsftSkipEx", "KsftFailEx", "KsftXfailEx", + "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", + "ksft_setup", + "ksft_eq", "ksft_ge", "ksft_in", "ksft_is", "ksft_lt", + "ksft_ne", "ksft_not_in", "ksft_raises", "ksft_true", "ksft_gt", + "ksft_not_none", "ksft_not_none", + "NetDrvEnv", "NetDrvEpEnv", "GenerateTraffic", "Remote"] except ModuleNotFoundError as e: - ksft_pr("Failed importing `net` library from kernel sources") - ksft_pr(str(e)) - ktap_result(True, comment="SKIP") + print("Failed importing `net` library from kernel sources") + print(str(e)) sys.exit(4) diff --git a/tools/testing/selftests/drivers/net/lib/py/__init__.py b/tools/testing/selftests/drivers/net/lib/py/__init__.py index e6c070f32f51..b0c6300150fb 100644 --- a/tools/testing/selftests/drivers/net/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/lib/py/__init__.py @@ -22,7 +22,7 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() NlError, RtnlFamily, DevlinkFamily, PSPFamily from net.lib.py import CmdExitFailure from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ - fd_read_timeout, ip, rand_port, tool, wait_port_listen, wait_file + fd_read_timeout, ip, rand_port, wait_port_listen, wait_file from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ ksft_setup @@ -34,7 +34,7 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", "CmdExitFailure", "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", - "fd_read_timeout", "ip", "rand_port", "tool", + "fd_read_timeout", "ip", "rand_port", "wait_port_listen", "wait_file", "KsftSkipEx", "KsftFailEx", "KsftXfailEx", "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", diff --git a/tools/testing/selftests/net/lib/py/__init__.py b/tools/testing/selftests/net/lib/py/__init__.py index 997b85cc216a..97b7cf2b20eb 100644 --- a/tools/testing/selftests/net/lib/py/__init__.py +++ b/tools/testing/selftests/net/lib/py/__init__.py @@ -1,9 +1,32 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Python selftest helpers for netdev. +""" + from .consts import KSRC -from .ksft import * +from .ksft import KsftFailEx, KsftSkipEx, KsftXfailEx, ksft_pr, ksft_eq, \ + ksft_ne, ksft_true, ksft_not_none, ksft_in, ksft_not_in, ksft_is, \ + ksft_ge, ksft_gt, ksft_lt, ksft_raises, ksft_busy_wait, \ + ktap_result, ksft_disruptive, ksft_setup, ksft_run, ksft_exit from .netns import NetNS, NetNSEnter -from .nsim import * -from .utils import * +from .nsim import NetdevSim, NetdevSimDev +from .utils import CmdExitFailure, fd_read_timeout, cmd, bkg, defer, \ + bpftool, ip, ethtool, bpftrace, rand_port, wait_port_listen, wait_file from .ynl import NlError, YnlFamily, EthtoolFamily, NetdevFamily, RtnlFamily, RtnlAddrFamily from .ynl import NetshaperFamily, DevlinkFamily, PSPFamily + +__all__ = ["KSRC", + "KsftFailEx", "KsftSkipEx", "KsftXfailEx", "ksft_pr", "ksft_eq", + "ksft_ne", "ksft_true", "ksft_not_none", "ksft_in", "ksft_not_in", + "ksft_is", "ksft_ge", "ksft_gt", "ksft_lt", "ksft_raises", + "ksft_busy_wait", "ktap_result", "ksft_disruptive", "ksft_setup", + "ksft_run", "ksft_exit", + "NetNS", "NetNSEnter", + "CmdExitFailure", "fd_read_timeout", "cmd", "bkg", "defer", + "bpftool", "ip", "ethtool", "bpftrace", "rand_port", + "wait_port_listen", "wait_file", + "NetdevSim", "NetdevSimDev", + "NetshaperFamily", "DevlinkFamily", "PSPFamily", "NlError", + "YnlFamily", "EthtoolFamily", "NetdevFamily", "RtnlFamily", + "RtnlAddrFamily"] -- 2.51.0

1 week, 3 days

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[PATCH v3 00/19 5.15.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 19 patches to update minmax.h in the 5.15.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes. 6.12.y was already backported and changes are part of v6.12.49. 6.6.y was already backported and changes are part of v6.6.109. 6.1.y was already backported and changes are currently in the 6.1-stable tree. The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in kernel 5.10.y. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Changes in v3: - Fix fs/erofs/zdata.h in patch 06/19 to use MIN_T instead of min_t to fix build on the following patch (07/19): In file included from ./include/linux/kernel.h:16, from ./include/linux/list.h:9, from ./include/linux/wait.h:7, from ./include/linux/wait_bit.h:8, from ./include/linux/fs.h:6, from fs/erofs/internal.h:10, from fs/erofs/zdata.h:9, from fs/erofs/zdata.c:6: fs/erofs/zdata.c: In function ‘z_erofs_decompress_pcluster’: fs/erofs/zdata.h:185:61: error: ISO C90 forbids variable length array ‘pages_onstack’ [-Werror=vla] 185 | min_t(unsigned int, THREAD_SIZE / 8 / sizeof(struct page *), 96U) | ^~~~ ./include/linux/minmax.h:49:23: note: in definition of macro ‘__cmp_once_unique’ 49 | ({ type ux = (x); type uy = (y); __cmp(op, ux, uy); }) | ^ ./include/linux/minmax.h:164:27: note: in expansion of macro ‘__cmp_once’ 164 | #define min_t(type, x, y) __cmp_once(min, type, x, y) | ^~~~~~~~~~ fs/erofs/zdata.h:185:9: note: in expansion of macro ‘min_t’ 185 | min_t(unsigned int, THREAD_SIZE / 8 / sizeof(struct page *), 96U) | ^~~~~ fs/erofs/zdata.c:847:36: note: in expansion of macro ‘Z_EROFS_VMAP_ONSTACK_PAGES’ 847 | struct page *pages_onstack[Z_EROFS_VMAP_ONSTACK_PAGES]; | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors - Increase test coverage using `make allyesconfig` and `make allmodconfig` for arm64, arm, x86_64 and i386 architectures. Changes in v2: - Fix the order of patches 6 - 10 according to order in mainline branch. - Use same style of [ Upstream commit <HASH> ] in all patches. Andy Shevchenko (1): minmax: deduplicate __unconst_integer_typeof() David Laight (8): minmax: fix indentation of __cmp_once() and __clamp_once() minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Herve Codina (1): minmax: Introduce {min,max}_array() Linus Torvalds (8): minmax: avoid overly complicated constant expressions in VM code minmax: add a few more MIN_T/MAX_T users minmax: simplify and clarify min_t()/max_t() implementation minmax: make generic MIN() and MAX() macros available everywhere minmax: don't use max() in situations that want a C constant expression minmax: simplify min()/max()/clamp() implementation minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too Matthew Wilcox (Oracle) (1): minmax: add in_range() macro arch/arm/mm/pageattr.c | 6 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + .../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../drm/arm/display/include/malidp_utils.h | 2 +- .../display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hwmon/adt7475.c | 24 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 4 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/virt/acrn/ioreq.c | 4 +- fs/btrfs/misc.h | 2 - fs/btrfs/tree-checker.c | 2 +- fs/erofs/zdata.h | 2 +- fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/ufs/util.h | 6 - include/linux/compiler.h | 9 + include/linux/minmax.h | 264 +++++++++++++----- kernel/trace/preemptirq_delay_test.c | 2 - lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - lib/vsprintf.c | 2 +- lib/zstd/zstd_internal.h | 2 - mm/zsmalloc.c | 1 - net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- tools/testing/selftests/vm/mremap_test.c | 2 + 48 files changed, 290 insertions(+), 184 deletions(-) -- 2.47.3

1 week, 3 days

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[PATCH v2] Fix to avoid the usage of the `res` variable uninitialized in the following macro expansions.

by Alessandro Zanni

It solves the following warning: In function ‘iommufd_viommu_vdevice_alloc’, inlined from ‘wrapper_iommufd_viommu_vdevice_alloc’ at iommufd.c:2889:1: ../kselftest_harness.h:760:12: warning: ‘ret’ may be used uninitialized [-Wmaybe-uninitialized] 760 | if (!(__exp _t __seen)) { \ | ^ ../kselftest_harness.h:513:9: note: in expansion of macro ‘__EXPECT’ 513 | __EXPECT(expected, #expected, seen, #seen, ==, 1) | ^~~~~~~~ iommufd_utils.h:1057:9: note: in expansion of macro ‘ASSERT_EQ’ 1057 | ASSERT_EQ(0, _test_cmd_trigger_vevents(self->fd, dev_id, nvevents)) | ^~~~~~~~~ iommufd.c:2924:17: note: in expansion of macro ‘test_cmd_trigger_vevents’ 2924 | test_cmd_trigger_vevents(dev_id, 3); | ^~~~~~~~~~~~~~~~~~~~~~~~ The issue can be reproduced, building the tests, with the command: make -C tools/testing/selftests TARGETS=iommu Signed-off-by: Alessandro Zanni <alessandro.zanni87(a)gmail.com> --- tools/testing/selftests/iommu/iommufd_utils.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 3c3e08b8c90e..772ca1db6e59 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -1042,15 +1042,13 @@ static int _test_cmd_trigger_vevents(int fd, __u32 dev_id, __u32 nvevents) .dev_id = dev_id, }, }; - int ret; while (nvevents--) { - ret = ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_TRIGGER_VEVENT), - &trigger_vevent_cmd); - if (ret < 0) + if (!ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_TRIGGER_VEVENT), + &trigger_vevent_cmd)) return -1; } - return ret; + return 0; } #define test_cmd_trigger_vevents(dev_id, nvevents) \ -- 2.43.0

1 week, 3 days

4
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[PATCH v2 00/19 5.15.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 19 patches to update minmax.h in the 5.15.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes (6.12.y and 6.6.y were already backported by me and are now aligned, 6.1.y is in progress). The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in kernel 5.10.y. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Changes in v2: - Fix the order of patches 6 - 10 according to order in mainline branch. - Use same style of [ Upstream commit <HASH> ] in all patches. Andy Shevchenko (1): minmax: deduplicate __unconst_integer_typeof() David Laight (8): minmax: fix indentation of __cmp_once() and __clamp_once() minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Herve Codina (1): minmax: Introduce {min,max}_array() Linus Torvalds (8): minmax: avoid overly complicated constant expressions in VM code minmax: add a few more MIN_T/MAX_T users minmax: simplify and clarify min_t()/max_t() implementation minmax: make generic MIN() and MAX() macros available everywhere minmax: don't use max() in situations that want a C constant expression minmax: simplify min()/max()/clamp() implementation minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too Matthew Wilcox (Oracle) (1): minmax: add in_range() macro arch/arm/mm/pageattr.c | 6 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + .../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../drm/arm/display/include/malidp_utils.h | 2 +- .../display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hwmon/adt7475.c | 24 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 4 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/virt/acrn/ioreq.c | 4 +- fs/btrfs/misc.h | 2 - fs/btrfs/tree-checker.c | 2 +- fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/ufs/util.h | 6 - include/linux/compiler.h | 9 + include/linux/minmax.h | 264 +++++++++++++----- kernel/trace/preemptirq_delay_test.c | 2 - lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - lib/vsprintf.c | 2 +- lib/zstd/zstd_internal.h | 2 - mm/zsmalloc.c | 1 - net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- tools/testing/selftests/vm/mremap_test.c | 2 + 47 files changed, 289 insertions(+), 183 deletions(-) -- 2.47.3

1 week, 4 days

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Run selftest via web server with UI on localhost

by Alexey Melezhik

Hi! I am kind of a newbie here, no experience in kernel development but with decent experience in QA automation and automation in general . What about giving a user an ability to run selftest tests in localhost server via web server with UI. I know many things are customizable via terminal with current setup however the UI approach might have some benefits : - processing raw KTAP output in nicer and more human readable way - having build step and test step as separate reports - having running/installing kernel ( which is tested ) as separate test/report - automatically dump server environment in case of any errors ( good input data before submitting bugs ) - automatically installing dependencies required for specific environment ( all this foo-dev packages ) - allow user split tests into different groups ( based on existing self test runner capabilities) and thus generate separate browseable reports - run long running tests in background with possible job termination via UI So it’s all about convenience and more easier way for QA people to do testing I see it as a good option, using current terminal run flow as a default PS if people like the idea I can come up with some prototype in a separate patch , I already have some tools in minds ( some of them I am author of ) Thanks Alexey

1 week, 4 days

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Re: [PATCH] selftests/run_kselftest.sh: Add --error-on-fail flag

by Alexey Melezhik

Sorry if this a bit of seemed as none relevant solution but what about running selftests via sort of ci server that would the whole parsing and test report post processing , preparation , etc ?

1 week, 4 days

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[PATCH net] selftests: drv-net: update remaining Python init files

by Jakub Kicinski

Convert remaining __init__ files similar to what we did in commit b615879dbfea ("selftests: drv-net: make linters happy with our imports") Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: willemb(a)google.com CC: daniel.zahka(a)gmail.com CC: linux-kselftest(a)vger.kernel.org --- .../drivers/net/hw/lib/py/__init__.py | 40 ++++++++++++++----- .../testing/selftests/net/lib/py/__init__.py | 29 ++++++++++++-- 2 files changed, 55 insertions(+), 14 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py index 0ceb297e7757..62973554bd53 100644 --- a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py @@ -1,5 +1,13 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Driver test environment (hardware-only tests). +NetDrvEnv and NetDrvEpEnv are the main environment classes. +Former is for local host only tests, latter creates / connects +to a remote endpoint. See NIPA wiki for more information about +running and writing driver tests. +""" + import sys from pathlib import Path @@ -8,26 +16,36 @@ KSFT_DIR = (Path(__file__).parent / "../../../../..").resolve() try: sys.path.append(KSFT_DIR.as_posix()) - from net.lib.py import * - from drivers.net.lib.py import * - # Import one by one to avoid pylint false positives + from net.lib.py import NetNS, NetNSEnter, NetdevSimDev from net.lib.py import EthtoolFamily, NetdevFamily, NetshaperFamily, \ NlError, RtnlFamily, DevlinkFamily, PSPFamily from net.lib.py import CmdExitFailure - from net.lib.py import bkg, cmd, defer, ethtool, fd_read_timeout, ip, \ - rand_port, tool, wait_port_listen - from net.lib.py import fd_read_timeout + from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ + fd_read_timeout, ip, rand_port, tool, wait_port_listen, wait_file from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ ksft_setup from net.lib.py import ksft_eq, ksft_ge, ksft_in, ksft_is, ksft_lt, \ ksft_ne, ksft_not_in, ksft_raises, ksft_true, ksft_gt, ksft_not_none - from net.lib.py import NetNSEnter - from drivers.net.lib.py import GenerateTraffic + from drivers.net.lib.py import GenerateTraffic, Remote from drivers.net.lib.py import NetDrvEnv, NetDrvEpEnv + + __all__ = ["NetNS", "NetNSEnter", "NetdevSimDev", + "EthtoolFamily", "NetdevFamily", "NetshaperFamily", + "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", + "CmdExitFailure", + "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", + "fd_read_timeout", "ip", "rand_port", "tool", + "wait_port_listen", "wait_file", + "KsftSkipEx", "KsftFailEx", "KsftXfailEx", + "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", + "ksft_setup", + "ksft_eq", "ksft_ge", "ksft_in", "ksft_is", "ksft_lt", + "ksft_ne", "ksft_not_in", "ksft_raises", "ksft_true", "ksft_gt", + "ksft_not_none", "ksft_not_none", + "NetDrvEnv", "NetDrvEpEnv", "GenerateTraffic", "Remote"] except ModuleNotFoundError as e: - ksft_pr("Failed importing `net` library from kernel sources") - ksft_pr(str(e)) - ktap_result(True, comment="SKIP") + print("Failed importing `net` library from kernel sources") + print(str(e)) sys.exit(4) diff --git a/tools/testing/selftests/net/lib/py/__init__.py b/tools/testing/selftests/net/lib/py/__init__.py index 997b85cc216a..97b7cf2b20eb 100644 --- a/tools/testing/selftests/net/lib/py/__init__.py +++ b/tools/testing/selftests/net/lib/py/__init__.py @@ -1,9 +1,32 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Python selftest helpers for netdev. +""" + from .consts import KSRC -from .ksft import * +from .ksft import KsftFailEx, KsftSkipEx, KsftXfailEx, ksft_pr, ksft_eq, \ + ksft_ne, ksft_true, ksft_not_none, ksft_in, ksft_not_in, ksft_is, \ + ksft_ge, ksft_gt, ksft_lt, ksft_raises, ksft_busy_wait, \ + ktap_result, ksft_disruptive, ksft_setup, ksft_run, ksft_exit from .netns import NetNS, NetNSEnter -from .nsim import * -from .utils import * +from .nsim import NetdevSim, NetdevSimDev +from .utils import CmdExitFailure, fd_read_timeout, cmd, bkg, defer, \ + bpftool, ip, ethtool, bpftrace, rand_port, wait_port_listen, wait_file from .ynl import NlError, YnlFamily, EthtoolFamily, NetdevFamily, RtnlFamily, RtnlAddrFamily from .ynl import NetshaperFamily, DevlinkFamily, PSPFamily + +__all__ = ["KSRC", + "KsftFailEx", "KsftSkipEx", "KsftXfailEx", "ksft_pr", "ksft_eq", + "ksft_ne", "ksft_true", "ksft_not_none", "ksft_in", "ksft_not_in", + "ksft_is", "ksft_ge", "ksft_gt", "ksft_lt", "ksft_raises", + "ksft_busy_wait", "ktap_result", "ksft_disruptive", "ksft_setup", + "ksft_run", "ksft_exit", + "NetNS", "NetNSEnter", + "CmdExitFailure", "fd_read_timeout", "cmd", "bkg", "defer", + "bpftool", "ip", "ethtool", "bpftrace", "rand_port", + "wait_port_listen", "wait_file", + "NetdevSim", "NetdevSimDev", + "NetshaperFamily", "DevlinkFamily", "PSPFamily", "NlError", + "YnlFamily", "EthtoolFamily", "NetdevFamily", "RtnlFamily", + "RtnlAddrFamily"] -- 2.51.0

1 week, 4 days

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[PATCH net repost] selftests: drv-net: make linters happy with our imports

by Jakub Kicinski

Linters are still not very happy with our __init__ files, which was pointed out in recent review (see Link). We have previously started importing things one by one to make linters happy with the test files (which import from __init__). But __init__ file itself still makes linters unhappy. To clean it up I believe we must completely remove the wildcard imports, and assign the imported modules to __all__. hds.py needs to be fixed because it seems to be importing the Python standard random from lib.net. We can't use ksft_pr() / ktap_result() in case importing from net.lib fails. Linters complain that those helpers themselves may not have been imported. Link: https://lore.kernel.org/9d215979-6c6d-4e9b-9cdd-39cff595866e@redhat.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- - resend after net-next PR was merged v1: https://lore.kernel.org/20251001234308.2895998-1-kuba@kernel.org Sending a fix for the driver's __init__.py first, if this is okay with everyone I'll convert the rest. I'm not super confident 'cause my Python isn't properly learned. Sending for net, even tho its not a real fix. I think that getting it applied during the merge window may be okay? No strong prefence. I'm slightly worried that merging it in net-next after the MW will leave us with a release cycle full of merge conflicts. --- tools/testing/selftests/drivers/net/hds.py | 3 +- .../selftests/drivers/net/lib/py/__init__.py | 43 ++++++++++++++----- 2 files changed, 34 insertions(+), 12 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hds.py b/tools/testing/selftests/drivers/net/hds.py index a2011474e625..c4fe049e9baa 100755 --- a/tools/testing/selftests/drivers/net/hds.py +++ b/tools/testing/selftests/drivers/net/hds.py @@ -3,11 +3,12 @@ import errno import os +import random from typing import Union from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_raises, KsftSkipEx from lib.py import CmdExitFailure, EthtoolFamily, NlError from lib.py import NetDrvEnv -from lib.py import defer, ethtool, ip, random +from lib.py import defer, ethtool, ip def _get_hds_mode(cfg, netnl) -> str: diff --git a/tools/testing/selftests/drivers/net/lib/py/__init__.py b/tools/testing/selftests/drivers/net/lib/py/__init__.py index 2a645415c4ca..e6c070f32f51 100644 --- a/tools/testing/selftests/drivers/net/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/lib/py/__init__.py @@ -1,5 +1,13 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Driver test environment. +NetDrvEnv and NetDrvEpEnv are the main environment classes. +Former is for local host only tests, latter creates / connects +to a remote endpoint. See NIPA wiki for more information about +running and writing driver tests. +""" + import sys from pathlib import Path @@ -8,26 +16,39 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() try: sys.path.append(KSFT_DIR.as_posix()) - from net.lib.py import * - # Import one by one to avoid pylint false positives + from net.lib.py import NetNS, NetNSEnter, NetdevSimDev from net.lib.py import EthtoolFamily, NetdevFamily, NetshaperFamily, \ NlError, RtnlFamily, DevlinkFamily, PSPFamily from net.lib.py import CmdExitFailure from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ fd_read_timeout, ip, rand_port, tool, wait_port_listen, wait_file - from net.lib.py import fd_read_timeout from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ ksft_setup from net.lib.py import ksft_eq, ksft_ge, ksft_in, ksft_is, ksft_lt, \ ksft_ne, ksft_not_in, ksft_raises, ksft_true, ksft_gt, ksft_not_none -except ModuleNotFoundError as e: - ksft_pr("Failed importing `net` library from kernel sources") - ksft_pr(str(e)) - ktap_result(True, comment="SKIP") - sys.exit(4) -from .env import * -from .load import * -from .remote import Remote + __all__ = ["NetNS", "NetNSEnter", "NetdevSimDev", + "EthtoolFamily", "NetdevFamily", "NetshaperFamily", + "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", + "CmdExitFailure", + "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", + "fd_read_timeout", "ip", "rand_port", "tool", + "wait_port_listen", "wait_file", + "KsftSkipEx", "KsftFailEx", "KsftXfailEx", + "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", + "ksft_setup", + "ksft_eq", "ksft_ge", "ksft_in", "ksft_is", "ksft_lt", + "ksft_ne", "ksft_not_in", "ksft_raises", "ksft_true", "ksft_gt", + "ksft_not_none", "ksft_not_none"] + + from .env import NetDrvEnv, NetDrvEpEnv + from .load import GenerateTraffic + from .remote import Remote + + __all__ += ["NetDrvEnv", "NetDrvEpEnv", "GenerateTraffic", "Remote"] +except ModuleNotFoundError as e: + print("Failed importing `net` library from kernel sources") + print(str(e)) + sys.exit(4) -- 2.51.0

1 week, 5 days

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[PATCH 0/7] tools/nolibc: reduce __nolibc_enosys() fallbacks

by Thomas Weißschuh

The __nolibc_enosys() fallback is used when the UAPI headers do not provide a certain syscall number or any possible fallback syscall. This is either because the syscall definition is fairly new and nolibc tries to be compatible with old UAPI headers or an architecture does not support a syscall at all. Many of these __nolibc_enosys() fallbacks have become unnecessary. Either because the "new" syscalls or not so new anymore or real fallbacks have been implemented in the meantime. Unnecessary usages of __nolibc_enosys() as it is not obvious anymore if a given function is really implemented on all architectures. Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> --- Thomas Weißschuh (7): tools/nolibc: remove __nolibc_enosys() fallback from time64-related functions tools/nolibc: remove __nolibc_enosys() fallback from *at() functions tools/nolibc: remove __nolibc_enosys() fallback from dup2() tools/nolibc: remove __nolibc_enosys() fallback from fork functions tools/nolibc: fold llseek fallback into lseek() kselftest/arm64: tpidr2: Switch to waitpid() over wait4() tools/nolibc: drop wait4() support tools/include/nolibc/poll.h | 4 +- tools/include/nolibc/sys.h | 90 +++++++++--------------------- tools/include/nolibc/sys/timerfd.h | 8 +-- tools/include/nolibc/sys/wait.h | 17 ------ tools/include/nolibc/time.h | 8 +-- tools/testing/selftests/arm64/abi/tpidr2.c | 6 +- 6 files changed, 34 insertions(+), 99 deletions(-) --- base-commit: 850047b19741490631855a475ccaa3ed29316039 change-id: 20250821-nolibc-enosys-2b2ec0b505ba Best regards, -- Thomas Weißschuh <linux(a)weissschuh.net>

1 week, 5 days

5
13
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[PATCH bpf v2 0/2] bpf: Avoid RCU context warning when unpinning htab with internal structs

by KaFai Wan

This small patchset is about avoid RCU context warning when unpinning htab with internal structs (timer, workqueue, or task_work). v2: - rename bpf_free_inode() to bpf_destroy_inode() (Andrii) v1: https://lore.kernel.org/all/20251003084528.502518-1-kafai.wan@linux.dev/ --- KaFai Wan (2): bpf: Avoid RCU context warning when unpinning htab with internal structs selftests/bpf: Add test for unpinning htab with internal timer struct kernel/bpf/inode.c | 4 +- .../selftests/bpf/prog_tests/pinning_htab.c | 37 +++++++++++++++++++ .../selftests/bpf/progs/test_pinning_htab.c | 25 +++++++++++++ 3 files changed, 64 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/pinning_htab.c create mode 100644 tools/testing/selftests/bpf/progs/test_pinning_htab.c -- 2.43.0

1 week, 5 days

2
4
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[PATCH bpf-next v2 2/2] selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Add tests for new kfuncs bpf_strcasestr() and bpf_strncasestr(). Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- .../selftests/bpf/prog_tests/string_kfuncs.c | 2 ++ .../selftests/bpf/progs/string_kfuncs_failure1.c | 12 ++++++++++++ .../selftests/bpf/progs/string_kfuncs_failure2.c | 2 ++ .../selftests/bpf/progs/string_kfuncs_success.c | 13 +++++++++++++ 4 files changed, 29 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c b/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c index 4d66fad3c8bd..0f3bf594e7a5 100644 --- a/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c +++ b/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c @@ -20,7 +20,9 @@ static const char * const test_cases[] = { "strcspn_str", "strcspn_reject", "strstr", + "strcasestr", "strnstr", + "strncasestr", }; void run_too_long_tests(void) diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c b/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c index 99d72c68f76a..826e6b6aff7e 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c @@ -45,8 +45,12 @@ SEC("syscall") __retval(USER_PTR_ERR)int test_strcspn_null1(void *ctx) { return SEC("syscall") __retval(USER_PTR_ERR)int test_strcspn_null2(void *ctx) { return bpf_strcspn("hello", NULL); } SEC("syscall") __retval(USER_PTR_ERR)int test_strstr_null1(void *ctx) { return bpf_strstr(NULL, "hello"); } SEC("syscall") __retval(USER_PTR_ERR)int test_strstr_null2(void *ctx) { return bpf_strstr("hello", NULL); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strcasestr_null1(void *ctx) { return bpf_strcasestr(NULL, "hello"); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strcasestr_null2(void *ctx) { return bpf_strcasestr("hello", NULL); } SEC("syscall") __retval(USER_PTR_ERR)int test_strnstr_null1(void *ctx) { return bpf_strnstr(NULL, "hello", 1); } SEC("syscall") __retval(USER_PTR_ERR)int test_strnstr_null2(void *ctx) { return bpf_strnstr("hello", NULL, 1); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strncasestr_null1(void *ctx) { return bpf_strncasestr(NULL, "hello", 1); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strncasestr_null2(void *ctx) { return bpf_strncasestr("hello", NULL, 1); } /* Passing userspace ptr to string kfuncs */ SEC("syscall") __retval(USER_PTR_ERR) int test_strcmp_user_ptr1(void *ctx) { return bpf_strcmp(user_ptr, "hello"); } @@ -65,8 +69,12 @@ SEC("syscall") __retval(USER_PTR_ERR) int test_strcspn_user_ptr1(void *ctx) { re SEC("syscall") __retval(USER_PTR_ERR) int test_strcspn_user_ptr2(void *ctx) { return bpf_strcspn("hello", user_ptr); } SEC("syscall") __retval(USER_PTR_ERR) int test_strstr_user_ptr1(void *ctx) { return bpf_strstr(user_ptr, "hello"); } SEC("syscall") __retval(USER_PTR_ERR) int test_strstr_user_ptr2(void *ctx) { return bpf_strstr("hello", user_ptr); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strcasestr_user_ptr1(void *ctx) { return bpf_strcasestr(user_ptr, "hello"); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strcasestr_user_ptr2(void *ctx) { return bpf_strcasestr("hello", user_ptr); } SEC("syscall") __retval(USER_PTR_ERR) int test_strnstr_user_ptr1(void *ctx) { return bpf_strnstr(user_ptr, "hello", 1); } SEC("syscall") __retval(USER_PTR_ERR) int test_strnstr_user_ptr2(void *ctx) { return bpf_strnstr("hello", user_ptr, 1); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strncasestr_user_ptr1(void *ctx) { return bpf_strncasestr(user_ptr, "hello", 1); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strncasestr_user_ptr2(void *ctx) { return bpf_strncasestr("hello", user_ptr, 1); } #endif /* __TARGET_ARCH_s390 */ @@ -87,7 +95,11 @@ SEC("syscall") __retval(-EFAULT) int test_strcspn_pagefault1(void *ctx) { return SEC("syscall") __retval(-EFAULT) int test_strcspn_pagefault2(void *ctx) { return bpf_strcspn("hello", invalid_kern_ptr); } SEC("syscall") __retval(-EFAULT) int test_strstr_pagefault1(void *ctx) { return bpf_strstr(invalid_kern_ptr, "hello"); } SEC("syscall") __retval(-EFAULT) int test_strstr_pagefault2(void *ctx) { return bpf_strstr("hello", invalid_kern_ptr); } +SEC("syscall") __retval(-EFAULT) int test_strcasestr_pagefault1(void *ctx) { return bpf_strcasestr(invalid_kern_ptr, "hello"); } +SEC("syscall") __retval(-EFAULT) int test_strcasestr_pagefault2(void *ctx) { return bpf_strcasestr("hello", invalid_kern_ptr); } SEC("syscall") __retval(-EFAULT) int test_strnstr_pagefault1(void *ctx) { return bpf_strnstr(invalid_kern_ptr, "hello", 1); } SEC("syscall") __retval(-EFAULT) int test_strnstr_pagefault2(void *ctx) { return bpf_strnstr("hello", invalid_kern_ptr, 1); } +SEC("syscall") __retval(-EFAULT) int test_strncasestr_pagefault1(void *ctx) { return bpf_strncasestr(invalid_kern_ptr, "hello", 1); } +SEC("syscall") __retval(-EFAULT) int test_strncasestr_pagefault2(void *ctx) { return bpf_strncasestr("hello", invalid_kern_ptr, 1); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c b/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c index e41cc5601994..05e1da1f250f 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c @@ -19,6 +19,8 @@ SEC("syscall") int test_strspn_accept_too_long(void *ctx) { return bpf_strspn("b SEC("syscall") int test_strcspn_str_too_long(void *ctx) { return bpf_strcspn(long_str, "b"); } SEC("syscall") int test_strcspn_reject_too_long(void *ctx) { return bpf_strcspn("b", long_str); } SEC("syscall") int test_strstr_too_long(void *ctx) { return bpf_strstr(long_str, "hello"); } +SEC("syscall") int test_strcasestr_too_long(void *ctx) { return bpf_strcasestr(long_str, "hello"); } SEC("syscall") int test_strnstr_too_long(void *ctx) { return bpf_strnstr(long_str, "hello", sizeof(long_str)); } +SEC("syscall") int test_strncasestr_too_long(void *ctx) { return bpf_strncasestr(long_str, "hello", sizeof(long_str)); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_success.c b/tools/testing/selftests/bpf/progs/string_kfuncs_success.c index 2e3498e37b9c..d21330b4cc3b 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_success.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_success.c @@ -33,8 +33,12 @@ __test(11) int test_strnlen(void *ctx) { return bpf_strnlen(str, 12); } __test(5) int test_strspn(void *ctx) { return bpf_strspn(str, "ehlo"); } __test(2) int test_strcspn(void *ctx) { return bpf_strcspn(str, "lo"); } __test(6) int test_strstr_found(void *ctx) { return bpf_strstr(str, "world"); } +__test(6) int test_strcasestr_found1(void *ctx) { return bpf_strcasestr(str, "world"); } +__test(6) int test_strcasestr_found2(void *ctx) { return bpf_strcasestr(str, "WORLD"); } __test(-ENOENT) int test_strstr_notfound(void *ctx) { return bpf_strstr(str, "hi"); } +__test(-ENOENT) int test_strcasestr_notfound(void *ctx) { return bpf_strcasestr(str, "hi"); } __test(0) int test_strstr_empty(void *ctx) { return bpf_strstr(str, ""); } +__test(0) int test_strcasestr_empty(void *ctx) { return bpf_strcasestr(str, ""); } __test(0) int test_strnstr_found1(void *ctx) { return bpf_strnstr("", "", 0); } __test(0) int test_strnstr_found2(void *ctx) { return bpf_strnstr(str, "hello", 5); } __test(0) int test_strnstr_found3(void *ctx) { return bpf_strnstr(str, "hello", 6); } @@ -42,5 +46,14 @@ __test(-ENOENT) int test_strnstr_notfound1(void *ctx) { return bpf_strnstr(str, __test(-ENOENT) int test_strnstr_notfound2(void *ctx) { return bpf_strnstr(str, "hello", 4); } __test(-ENOENT) int test_strnstr_notfound3(void *ctx) { return bpf_strnstr("", "a", 0); } __test(0) int test_strnstr_empty(void *ctx) { return bpf_strnstr(str, "", 1); } +__test(0) int test_strncasestr_found1(void *ctx) { return bpf_strncasestr("", "", 0); } +__test(0) int test_strncasestr_found2(void *ctx) { return bpf_strncasestr(str, "hello", 5); } +__test(0) int test_strncasestr_found3(void *ctx) { return bpf_strncasestr(str, "hello", 6); } +__test(0) int test_strncasestr_found4(void *ctx) { return bpf_strncasestr(str, "HELLO", 5); } +__test(0) int test_strncasestr_found5(void *ctx) { return bpf_strncasestr(str, "HELLO", 6); } +__test(-ENOENT) int test_strncasestr_notfound1(void *ctx) { return bpf_strncasestr(str, "hi", 10); } +__test(-ENOENT) int test_strncasestr_notfound2(void *ctx) { return bpf_strncasestr(str, "hello", 4); } +__test(-ENOENT) int test_strncasestr_notfound3(void *ctx) { return bpf_strncasestr("", "a", 0); } +__test(0) int test_strncasestr_empty(void *ctx) { return bpf_strncasestr(str, "", 1); } char _license[] SEC("license") = "GPL"; -- 2.51.0

1 week, 5 days

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[PATCH bpf-next v2 1/2] bpf: add bpf_strcasestr,bpf_strncasestr kfuncs

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> bpf_strcasestr() and bpf_strncasestr() functions perform same like bpf_strstr() and bpf_strnstr() except ignoring the case of the characters. Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- kernel/bpf/helpers.c | 96 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 75 insertions(+), 21 deletions(-) diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index c9fab9a356df..4df902e5f208 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -3675,34 +3675,20 @@ __bpf_kfunc int bpf_strcspn(const char *s__ign, const char *reject__ign) return -EFAULT; } -/** - * bpf_strnstr - Find the first substring in a length-limited string - * @s1__ign: The string to be searched - * @s2__ign: The string to search for - * @len: the maximum number of characters to search - * - * Return: - * * >=0 - Index of the first character of the first occurrence of @s2__ign - * within the first @len characters of @s1__ign - * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign - * * %-EFAULT - Cannot read one of the strings - * * %-E2BIG - One of the strings is too large - * * %-ERANGE - One of the strings is outside of kernel address space - */ -__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len) +int __bpf_strnstr(const char *s1, const char *s2, size_t len, bool ignore_case) { char c1, c2; int i, j; - if (!copy_from_kernel_nofault_allowed(s1__ign, 1) || - !copy_from_kernel_nofault_allowed(s2__ign, 1)) { + if (!copy_from_kernel_nofault_allowed(s1, 1) || + !copy_from_kernel_nofault_allowed(s2, 1)) { return -ERANGE; } guard(pagefault)(); for (i = 0; i < XATTR_SIZE_MAX; i++) { for (j = 0; i + j <= len && j < XATTR_SIZE_MAX; j++) { - __get_kernel_nofault(&c2, s2__ign + j, char, err_out); + __get_kernel_nofault(&c2, s2 + j, char, err_out); if (c2 == '\0') return i; /* @@ -3712,7 +3698,13 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len */ if (i + j == len) break; - __get_kernel_nofault(&c1, s1__ign + j, char, err_out); + __get_kernel_nofault(&c1, s1 + j, char, err_out); + + if (ignore_case) { + c1 = tolower(c1); + c2 = tolower(c2); + } + if (c1 == '\0') return -ENOENT; if (c1 != c2) @@ -3722,7 +3714,7 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len return -E2BIG; if (i + j == len) return -ENOENT; - s1__ign++; + s1++; } return -E2BIG; err_out: @@ -3744,8 +3736,68 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len */ __bpf_kfunc int bpf_strstr(const char *s1__ign, const char *s2__ign) { - return bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX); + return __bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX, false); +} + +/** + * bpf_strcasestr - Find the first substring in a string, ignoring the case of + * the characters + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within @s1__ign + * * %-ENOENT - @s2__ign is not a substring of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strcasestr(const char *s1__ign, const char *s2__ign) +{ + return __bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX, true); } + +/** + * bpf_strnstr - Find the first substring in a length-limited string + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * @len: the maximum number of characters to search + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within the first @len characters of @s1__ign + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len) +{ + return __bpf_strnstr(s1__ign, s2__ign, len, false); +} + +/** + * bpf_strnstr - Find the first substring in a length-limited string, ignoring + * the case of the characters + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * @len: the maximum number of characters to search + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within the first @len characters of @s1__ign + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strncasestr(const char *s1__ign, const char *s2__ign, + size_t len) +{ + return __bpf_strnstr(s1__ign, s2__ign, len, true); +} + #ifdef CONFIG_KEYS /** * bpf_lookup_user_key - lookup a key by its serial @@ -4367,7 +4419,9 @@ BTF_ID_FLAGS(func, bpf_strnlen); BTF_ID_FLAGS(func, bpf_strspn); BTF_ID_FLAGS(func, bpf_strcspn); BTF_ID_FLAGS(func, bpf_strstr); +BTF_ID_FLAGS(func, bpf_strcasestr); BTF_ID_FLAGS(func, bpf_strnstr); +BTF_ID_FLAGS(func, bpf_strncasestr); #if defined(CONFIG_BPF_LSM) && defined(CONFIG_CGROUPS) BTF_ID_FLAGS(func, bpf_cgroup_read_xattr, KF_RCU) #endif -- 2.51.0

1 week, 5 days

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[PATCH bpf-next v3 2/2] selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Add tests for new kfuncs bpf_strcasestr() and bpf_strncasestr(). Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- .../testing/selftests/bpf/prog_tests/string_kfuncs.c | 2 ++ .../selftests/bpf/progs/string_kfuncs_failure1.c | 12 ++++++++++++ .../selftests/bpf/progs/string_kfuncs_failure2.c | 2 ++ .../selftests/bpf/progs/string_kfuncs_success.c | 10 ++++++++++ 4 files changed, 26 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c b/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c index 4d66fad3c8bd..0f3bf594e7a5 100644 --- a/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c +++ b/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c @@ -20,7 +20,9 @@ static const char * const test_cases[] = { "strcspn_str", "strcspn_reject", "strstr", + "strcasestr", "strnstr", + "strncasestr", }; void run_too_long_tests(void) diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c b/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c index 99d72c68f76a..826e6b6aff7e 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c @@ -45,8 +45,12 @@ SEC("syscall") __retval(USER_PTR_ERR)int test_strcspn_null1(void *ctx) { return SEC("syscall") __retval(USER_PTR_ERR)int test_strcspn_null2(void *ctx) { return bpf_strcspn("hello", NULL); } SEC("syscall") __retval(USER_PTR_ERR)int test_strstr_null1(void *ctx) { return bpf_strstr(NULL, "hello"); } SEC("syscall") __retval(USER_PTR_ERR)int test_strstr_null2(void *ctx) { return bpf_strstr("hello", NULL); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strcasestr_null1(void *ctx) { return bpf_strcasestr(NULL, "hello"); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strcasestr_null2(void *ctx) { return bpf_strcasestr("hello", NULL); } SEC("syscall") __retval(USER_PTR_ERR)int test_strnstr_null1(void *ctx) { return bpf_strnstr(NULL, "hello", 1); } SEC("syscall") __retval(USER_PTR_ERR)int test_strnstr_null2(void *ctx) { return bpf_strnstr("hello", NULL, 1); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strncasestr_null1(void *ctx) { return bpf_strncasestr(NULL, "hello", 1); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strncasestr_null2(void *ctx) { return bpf_strncasestr("hello", NULL, 1); } /* Passing userspace ptr to string kfuncs */ SEC("syscall") __retval(USER_PTR_ERR) int test_strcmp_user_ptr1(void *ctx) { return bpf_strcmp(user_ptr, "hello"); } @@ -65,8 +69,12 @@ SEC("syscall") __retval(USER_PTR_ERR) int test_strcspn_user_ptr1(void *ctx) { re SEC("syscall") __retval(USER_PTR_ERR) int test_strcspn_user_ptr2(void *ctx) { return bpf_strcspn("hello", user_ptr); } SEC("syscall") __retval(USER_PTR_ERR) int test_strstr_user_ptr1(void *ctx) { return bpf_strstr(user_ptr, "hello"); } SEC("syscall") __retval(USER_PTR_ERR) int test_strstr_user_ptr2(void *ctx) { return bpf_strstr("hello", user_ptr); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strcasestr_user_ptr1(void *ctx) { return bpf_strcasestr(user_ptr, "hello"); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strcasestr_user_ptr2(void *ctx) { return bpf_strcasestr("hello", user_ptr); } SEC("syscall") __retval(USER_PTR_ERR) int test_strnstr_user_ptr1(void *ctx) { return bpf_strnstr(user_ptr, "hello", 1); } SEC("syscall") __retval(USER_PTR_ERR) int test_strnstr_user_ptr2(void *ctx) { return bpf_strnstr("hello", user_ptr, 1); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strncasestr_user_ptr1(void *ctx) { return bpf_strncasestr(user_ptr, "hello", 1); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strncasestr_user_ptr2(void *ctx) { return bpf_strncasestr("hello", user_ptr, 1); } #endif /* __TARGET_ARCH_s390 */ @@ -87,7 +95,11 @@ SEC("syscall") __retval(-EFAULT) int test_strcspn_pagefault1(void *ctx) { return SEC("syscall") __retval(-EFAULT) int test_strcspn_pagefault2(void *ctx) { return bpf_strcspn("hello", invalid_kern_ptr); } SEC("syscall") __retval(-EFAULT) int test_strstr_pagefault1(void *ctx) { return bpf_strstr(invalid_kern_ptr, "hello"); } SEC("syscall") __retval(-EFAULT) int test_strstr_pagefault2(void *ctx) { return bpf_strstr("hello", invalid_kern_ptr); } +SEC("syscall") __retval(-EFAULT) int test_strcasestr_pagefault1(void *ctx) { return bpf_strcasestr(invalid_kern_ptr, "hello"); } +SEC("syscall") __retval(-EFAULT) int test_strcasestr_pagefault2(void *ctx) { return bpf_strcasestr("hello", invalid_kern_ptr); } SEC("syscall") __retval(-EFAULT) int test_strnstr_pagefault1(void *ctx) { return bpf_strnstr(invalid_kern_ptr, "hello", 1); } SEC("syscall") __retval(-EFAULT) int test_strnstr_pagefault2(void *ctx) { return bpf_strnstr("hello", invalid_kern_ptr, 1); } +SEC("syscall") __retval(-EFAULT) int test_strncasestr_pagefault1(void *ctx) { return bpf_strncasestr(invalid_kern_ptr, "hello", 1); } +SEC("syscall") __retval(-EFAULT) int test_strncasestr_pagefault2(void *ctx) { return bpf_strncasestr("hello", invalid_kern_ptr, 1); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c b/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c index e41cc5601994..05e1da1f250f 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c @@ -19,6 +19,8 @@ SEC("syscall") int test_strspn_accept_too_long(void *ctx) { return bpf_strspn("b SEC("syscall") int test_strcspn_str_too_long(void *ctx) { return bpf_strcspn(long_str, "b"); } SEC("syscall") int test_strcspn_reject_too_long(void *ctx) { return bpf_strcspn("b", long_str); } SEC("syscall") int test_strstr_too_long(void *ctx) { return bpf_strstr(long_str, "hello"); } +SEC("syscall") int test_strcasestr_too_long(void *ctx) { return bpf_strcasestr(long_str, "hello"); } SEC("syscall") int test_strnstr_too_long(void *ctx) { return bpf_strnstr(long_str, "hello", sizeof(long_str)); } +SEC("syscall") int test_strncasestr_too_long(void *ctx) { return bpf_strncasestr(long_str, "hello", sizeof(long_str)); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_success.c b/tools/testing/selftests/bpf/progs/string_kfuncs_success.c index 2e3498e37b9c..a8513964516b 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_success.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_success.c @@ -33,8 +33,11 @@ __test(11) int test_strnlen(void *ctx) { return bpf_strnlen(str, 12); } __test(5) int test_strspn(void *ctx) { return bpf_strspn(str, "ehlo"); } __test(2) int test_strcspn(void *ctx) { return bpf_strcspn(str, "lo"); } __test(6) int test_strstr_found(void *ctx) { return bpf_strstr(str, "world"); } +__test(6) int test_strcasestr_found(void *ctx) { return bpf_strcasestr(str, "woRLD"); } __test(-ENOENT) int test_strstr_notfound(void *ctx) { return bpf_strstr(str, "hi"); } +__test(-ENOENT) int test_strcasestr_notfound(void *ctx) { return bpf_strcasestr(str, "hi"); } __test(0) int test_strstr_empty(void *ctx) { return bpf_strstr(str, ""); } +__test(0) int test_strcasestr_empty(void *ctx) { return bpf_strcasestr(str, ""); } __test(0) int test_strnstr_found1(void *ctx) { return bpf_strnstr("", "", 0); } __test(0) int test_strnstr_found2(void *ctx) { return bpf_strnstr(str, "hello", 5); } __test(0) int test_strnstr_found3(void *ctx) { return bpf_strnstr(str, "hello", 6); } @@ -42,5 +45,12 @@ __test(-ENOENT) int test_strnstr_notfound1(void *ctx) { return bpf_strnstr(str, __test(-ENOENT) int test_strnstr_notfound2(void *ctx) { return bpf_strnstr(str, "hello", 4); } __test(-ENOENT) int test_strnstr_notfound3(void *ctx) { return bpf_strnstr("", "a", 0); } __test(0) int test_strnstr_empty(void *ctx) { return bpf_strnstr(str, "", 1); } +__test(0) int test_strncasestr_found1(void *ctx) { return bpf_strncasestr("", "", 0); } +__test(0) int test_strncasestr_found2(void *ctx) { return bpf_strncasestr(str, "heLLO", 5); } +__test(0) int test_strncasestr_found3(void *ctx) { return bpf_strncasestr(str, "heLLO", 6); } +__test(-ENOENT) int test_strncasestr_notfound1(void *ctx) { return bpf_strncasestr(str, "hi", 10); } +__test(-ENOENT) int test_strncasestr_notfound2(void *ctx) { return bpf_strncasestr(str, "hello", 4); } +__test(-ENOENT) int test_strncasestr_notfound3(void *ctx) { return bpf_strncasestr("", "a", 0); } +__test(0) int test_strncasestr_empty(void *ctx) { return bpf_strncasestr(str, "", 1); } char _license[] SEC("license") = "GPL"; -- 2.51.0

1 week, 5 days

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[PATCH bpf-next v3 0/2] Add kfuncs bpf_strcasestr and bpf_strncasestr

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Add kfuncs bpf_strcasestr and bpf_strncasestr, which are extensions of bpf_strstr and bpf_strnstr, suitable for more scenarios. Rong Tao (2): bpf: add bpf_strcasestr,bpf_strncasestr kfuncs selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs kernel/bpf/helpers.c | 97 +++++++++++++++---- .../selftests/bpf/prog_tests/string_kfuncs.c | 2 + .../bpf/progs/string_kfuncs_failure1.c | 12 +++ .../bpf/progs/string_kfuncs_failure2.c | 2 + .../bpf/progs/string_kfuncs_success.c | 10 ++ 5 files changed, 102 insertions(+), 21 deletions(-) --- v3: keep __bpf_strnstr() static and compress some tests. v2: remove extra __bpf_kfunc and fix comment of bpf_strncasestr(). https://lore.kernel.org/all/tencent_6D228941AB904DD6E1E58C8ACDEBEC280C06@qq… v1: https://lore.kernel.org/all/tencent_8AF4D15B4475031E2185ACDE4B1495995707@qq… -- 2.51.0

1 week, 5 days

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[PATCH bpf 0/2] bpf: Avoid RCU context warning when unpinning htab with internal structs

by KaFai Wan

This small patchset is about avoid RCU context warning when unpinning htab with internal structs (timer, workqueue, or task_work). --- KaFai Wan (2): bpf: Avoid RCU context warning when unpinning htab with internal structs selftests/bpf: Add test for unpinning htab with internal timer struct kernel/bpf/inode.c | 2 +- .../selftests/bpf/prog_tests/pinning_htab.c | 37 +++++++++++++++++++ .../selftests/bpf/progs/test_pinning_htab.c | 25 +++++++++++++ 3 files changed, 63 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/pinning_htab.c create mode 100644 tools/testing/selftests/bpf/progs/test_pinning_htab.c -- 2.43.0

1 week, 5 days

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[PATCH 0/4] PCI: Add support and tests for FIXUP quirks in modules

by Brian Norris

This series primarily adds support for DECLARE_PCI_FIXUP_*() in modules. There are a few drivers that already use this, and so they are presumably broken when built as modules. While at it, I wrote some unit tests that emulate a fake PCI device, and let the PCI framework match/not-match its vendor/device IDs. This test can be built into the kernel or built as a module. I also include some infrastructure changes (patch 3 and 4), so that ARCH=um (the default for kunit.py), ARCH=arm, and ARCH=arm64 will run these tests by default. These patches have different maintainers and are independent, so they can probably be picked up separately. I included them because otherwise the tests in patch 2 aren't so easy to run. Brian Norris (4): PCI: Support FIXUP quirks in modules PCI: Add KUnit tests for FIXUP quirks um: Select PCI_DOMAINS_GENERIC kunit: qemu_configs: Add PCI to arm, arm64 arch/um/Kconfig | 1 + drivers/pci/Kconfig | 11 ++ drivers/pci/Makefile | 1 + drivers/pci/fixup-test.c | 197 ++++++++++++++++++++++ drivers/pci/quirks.c | 62 +++++++ include/linux/module.h | 18 ++ kernel/module/main.c | 26 +++ tools/testing/kunit/qemu_configs/arm.py | 1 + tools/testing/kunit/qemu_configs/arm64.py | 1 + 9 files changed, 318 insertions(+) create mode 100644 drivers/pci/fixup-test.c -- 2.51.0.384.g4c02a37b29-goog

1 week, 5 days

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[PATCH net v2] selftests: net: unify the Makefile formats

by Jakub Kicinski

We get a significant number of conflicts between net and net-next because of selftests Makefile changes. People tend to append new test cases at the end of the Makefile when there's no clear sort order. Sort all networking selftests Makefiles, use the following format: VAR_NAME := \ entry1 \ entry2 \ entry3 \ # end of VAR_NAME Some Makefiles are already pretty close to this. Acked-by: Antonio Quartulli <antonio(a)openvpn.net> Acked-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> Acked-by: Allison Henderson <allison.henderson(a)oracle.com> Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- v2: - fix the mptcp config, not sure what happened there v1: https://lore.kernel.org/20251002013034.3176961-1-kuba@kernel.org I think we need to apply this during the merge window, otherwise the conflicts will be crazy. CC: shuah(a)kernel.org CC: jv(a)jvosburgh.net CC: olteanv(a)gmail.com CC: jiri(a)resnulli.us CC: mst(a)redhat.com CC: jasowang(a)redhat.com CC: xuanzhuo(a)linux.alibaba.com CC: eperezma(a)redhat.com CC: kuniyu(a)google.com CC: martineau(a)kernel.org CC: pablo(a)netfilter.org CC: kadlec(a)netfilter.org CC: fw(a)strlen.de CC: petrm(a)nvidia.com CC: razor(a)blackwall.org CC: idosch(a)nvidia.com CC: linux-kselftest(a)vger.kernel.org CC: mptcp(a)lists.linux.dev CC: netfilter-devel(a)vger.kernel.org CC: coreteam(a)netfilter.org --- tools/testing/selftests/drivers/net/Makefile | 4 +- .../selftests/drivers/net/bonding/Makefile | 21 +- .../selftests/drivers/net/dsa/Makefile | 9 +- .../testing/selftests/drivers/net/hw/Makefile | 8 +- .../selftests/drivers/net/netdevsim/Makefile | 4 +- .../selftests/drivers/net/team/Makefile | 11 +- .../selftests/drivers/net/virtio_net/Makefile | 13 +- tools/testing/selftests/net/Makefile | 313 +++++++++++------- tools/testing/selftests/net/af_unix/Makefile | 10 +- .../testing/selftests/net/forwarding/Makefile | 58 ++-- tools/testing/selftests/net/hsr/Makefile | 6 +- tools/testing/selftests/net/lib/Makefile | 14 +- tools/testing/selftests/net/mptcp/Makefile | 28 +- .../testing/selftests/net/netfilter/Makefile | 89 ++--- tools/testing/selftests/net/ovpn/Makefile | 12 +- .../selftests/net/packetdrill/Makefile | 10 +- tools/testing/selftests/net/rds/Makefile | 10 +- 17 files changed, 380 insertions(+), 240 deletions(-) diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile index bd3af9a34e2f..6e41635bd55a 100644 --- a/tools/testing/selftests/drivers/net/Makefile +++ b/tools/testing/selftests/drivers/net/Makefile @@ -10,6 +10,7 @@ TEST_GEN_FILES := \ # end of TEST_GEN_FILES TEST_PROGS := \ + hds.py \ napi_id.py \ napi_threaded.py \ netcons_basic.sh \ @@ -21,9 +22,8 @@ TEST_PROGS := \ ping.py \ psp.py \ queues.py \ - stats.py \ shaper.py \ - hds.py \ + stats.py \ xdp.py \ # end of TEST_PROGS diff --git a/tools/testing/selftests/drivers/net/bonding/Makefile b/tools/testing/selftests/drivers/net/bonding/Makefile index 2f095cf67d9a..402d4ee84f2e 100644 --- a/tools/testing/selftests/drivers/net/bonding/Makefile +++ b/tools/testing/selftests/drivers/net/bonding/Makefile @@ -4,24 +4,27 @@ TEST_PROGS := \ bond-arp-interval-causes-panic.sh \ bond-break-lacpdu-tx.sh \ + bond-eth-type-change.sh \ bond-lladdr-target.sh \ + bond_ipsec_offload.sh \ + bond_lacp_prio.sh \ + bond_macvlan_ipvlan.sh \ + bond_options.sh \ + bond_passive_lacp.sh \ dev_addr_lists.sh \ mode-1-recovery-updelay.sh \ mode-2-recovery-updelay.sh \ - bond_options.sh \ - bond-eth-type-change.sh \ - bond_macvlan_ipvlan.sh \ - bond_passive_lacp.sh \ - bond_lacp_prio.sh - bond_ipsec_offload.sh +# end of TEST_PROGS TEST_FILES := \ - lag_lib.sh \ bond_topo_2d1c.sh \ - bond_topo_3d1c.sh + bond_topo_3d1c.sh \ + lag_lib.sh \ +# end of TEST_FILES TEST_INCLUDES := \ + ../../../net/lib.sh \ ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/dsa/Makefile b/tools/testing/selftests/drivers/net/dsa/Makefile index cd6817fe5be6..699e3565d735 100644 --- a/tools/testing/selftests/drivers/net/dsa/Makefile +++ b/tools/testing/selftests/drivers/net/dsa/Makefile @@ -9,11 +9,13 @@ TEST_PROGS = bridge_locked_port.sh \ local_termination.sh \ no_forwarding.sh \ tc_actions.sh \ - test_bridge_fdb_stress.sh + test_bridge_fdb_stress.sh \ +# end of TEST_PROGS TEST_FILES := \ + forwarding.config \ run_net_forwarding_test.sh \ - forwarding.config +# end of TEST_FILES TEST_INCLUDES := \ ../../../net/forwarding/bridge_locked_port.sh \ @@ -27,6 +29,7 @@ TEST_INCLUDES := \ ../../../net/forwarding/no_forwarding.sh \ ../../../net/forwarding/tc_actions.sh \ ../../../net/forwarding/tc_common.sh \ - ../../../net/lib.sh + ../../../net/lib.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/hw/Makefile b/tools/testing/selftests/drivers/net/hw/Makefile index ee09a40d532c..8133d1a0051c 100644 --- a/tools/testing/selftests/drivers/net/hw/Makefile +++ b/tools/testing/selftests/drivers/net/hw/Makefile @@ -32,8 +32,8 @@ TEST_FILES := \ TEST_INCLUDES := \ $(wildcard lib/py/*.py ../lib/py/*.py) \ ../../../net/lib.sh \ - ../../../net/forwarding/lib.sh \ ../../../net/forwarding/ipip_lib.sh \ + ../../../net/forwarding/lib.sh \ ../../../net/forwarding/tc_common.sh \ # @@ -45,7 +45,11 @@ TEST_GEN_FILES += $(patsubst %.c,%.o,$(wildcard *.bpf.c)) include ../../../lib.mk # YNL build -YNL_GENS := ethtool netdev +YNL_GENS := \ + ethtool \ + netdev \ +# end of YNL_GENS + include ../../../net/ynl.mk include ../../../net/bpf.mk diff --git a/tools/testing/selftests/drivers/net/netdevsim/Makefile b/tools/testing/selftests/drivers/net/netdevsim/Makefile index 07b7c46d3311..daf51113c827 100644 --- a/tools/testing/selftests/drivers/net/netdevsim/Makefile +++ b/tools/testing/selftests/drivers/net/netdevsim/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = devlink.sh \ +TEST_PROGS := \ + devlink.sh \ devlink_in_netns.sh \ devlink_trap.sh \ ethtool-coalesce.sh \ @@ -17,5 +18,6 @@ TEST_PROGS = devlink.sh \ psample.sh \ tc-mq-visibility.sh \ udp_tunnel_nic.sh \ +# end of TEST_PROGS include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/team/Makefile b/tools/testing/selftests/drivers/net/team/Makefile index 89d854c7e674..1340b3df9c31 100644 --- a/tools/testing/selftests/drivers/net/team/Makefile +++ b/tools/testing/selftests/drivers/net/team/Makefile @@ -1,13 +1,18 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for net selftests -TEST_PROGS := dev_addr_lists.sh propagation.sh options.sh +TEST_PROGS := \ + dev_addr_lists.sh \ + options.sh \ + propagation.sh \ +# end of TEST_PROGS TEST_INCLUDES := \ ../bonding/lag_lib.sh \ ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh \ ../../../net/in_netns.sh \ - ../../../net/lib/sh/defer.sh + ../../../net/lib.sh \ + ../../../net/lib/sh/defer.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/virtio_net/Makefile b/tools/testing/selftests/drivers/net/virtio_net/Makefile index 7ec7cd3ab2cc..868ece3fea1f 100644 --- a/tools/testing/selftests/drivers/net/virtio_net/Makefile +++ b/tools/testing/selftests/drivers/net/virtio_net/Makefile @@ -1,15 +1,12 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = basic_features.sh \ - # +TEST_PROGS = basic_features.sh -TEST_FILES = \ - virtio_net_common.sh \ - # +TEST_FILES = virtio_net_common.sh TEST_INCLUDES = \ - ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh \ - # + ../../../net/forwarding/lib.sh \ + ../../../net/lib.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 5d9d96515c4a..b5127e968108 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -1,128 +1,201 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for net selftests -CFLAGS += -Wall -Wl,--no-as-needed -O2 -g +CFLAGS += -Wall -Wl,--no-as-needed -O2 -g CFLAGS += -I../../../../usr/include/ $(KHDR_INCLUDES) # Additional include paths needed by kselftest.h CFLAGS += -I../ -TEST_PROGS := run_netsocktests run_afpackettests test_bpf.sh netdevice.sh \ - rtnetlink.sh xfrm_policy.sh -TEST_PROGS += fcnal-ipv4.sh fcnal-ipv6.sh fcnal-other.sh -TEST_PROGS += fib_tests.sh fib-onlink-tests.sh pmtu.sh udpgso.sh ip_defrag.sh -TEST_PROGS += udpgso_bench.sh fib_rule_tests.sh msg_zerocopy.sh psock_snd.sh -TEST_PROGS += udpgro_bench.sh udpgro.sh test_vxlan_under_vrf.sh reuseport_addr_any.sh -TEST_PROGS += test_vxlan_fdb_changelink.sh so_txtime.sh ipv6_flowlabel.sh -TEST_PROGS += tcp_fastopen_backup_key.sh l2tp.sh traceroute.sh -TEST_PROGS += fin_ack_lat.sh fib_nexthop_multiprefix.sh fib_nexthops.sh fib_nexthop_nongw.sh -TEST_PROGS += altnames.sh icmp.sh icmp_redirect.sh ip6_gre_headroom.sh -TEST_PROGS += route_localnet.sh -TEST_PROGS += reuseaddr_ports_exhausted.sh -TEST_PROGS += txtimestamp.sh -TEST_PROGS += vrf-xfrm-tests.sh -TEST_PROGS += rxtimestamp.sh -TEST_PROGS += drop_monitor_tests.sh -TEST_PROGS += vrf_route_leaking.sh -TEST_PROGS += bareudp.sh -TEST_PROGS += amt.sh -TEST_PROGS += unicast_extensions.sh -TEST_PROGS += udpgro_fwd.sh -TEST_PROGS += udpgro_frglist.sh -TEST_PROGS += nat6to4.sh -TEST_PROGS += veth.sh -TEST_PROGS += ioam6.sh -TEST_PROGS += gro.sh -TEST_PROGS += gre_gso.sh -TEST_PROGS += gre_ipv6_lladdr.sh -TEST_PROGS += cmsg_so_mark.sh -TEST_PROGS += cmsg_so_priority.sh -TEST_PROGS += test_so_rcv.sh -TEST_PROGS += cmsg_time.sh cmsg_ip.sh -TEST_PROGS += netns-name.sh -TEST_PROGS += link_netns.py -TEST_PROGS += nl_netdev.py -TEST_PROGS += rtnetlink.py -TEST_PROGS += rtnetlink_notification.sh -TEST_PROGS += srv6_end_dt46_l3vpn_test.sh -TEST_PROGS += srv6_end_dt4_l3vpn_test.sh -TEST_PROGS += srv6_end_dt6_l3vpn_test.sh -TEST_PROGS += srv6_hencap_red_l3vpn_test.sh -TEST_PROGS += srv6_hl2encap_red_l2vpn_test.sh -TEST_PROGS += srv6_end_next_csid_l3vpn_test.sh -TEST_PROGS += srv6_end_x_next_csid_l3vpn_test.sh -TEST_PROGS += srv6_end_flavors_test.sh -TEST_PROGS += srv6_end_dx4_netfilter_test.sh -TEST_PROGS += srv6_end_dx6_netfilter_test.sh -TEST_PROGS += vrf_strict_mode_test.sh -TEST_PROGS += arp_ndisc_evict_nocarrier.sh -TEST_PROGS += ndisc_unsolicited_na_test.sh -TEST_PROGS += arp_ndisc_untracked_subnets.sh -TEST_PROGS += stress_reuseport_listen.sh -TEST_PROGS += l2_tos_ttl_inherit.sh -TEST_PROGS += bind_bhash.sh -TEST_PROGS += ip_local_port_range.sh -TEST_PROGS += rps_default_mask.sh -TEST_PROGS += big_tcp.sh -TEST_PROGS += netns-sysctl.sh -TEST_PROGS += netdev-l2addr.sh -TEST_PROGS_EXTENDED := toeplitz_client.sh toeplitz.sh xfrm_policy_add_speed.sh -TEST_GEN_FILES = socket nettest -TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy reuseport_addr_any -TEST_GEN_FILES += tcp_mmap tcp_inq psock_snd txring_overwrite -TEST_GEN_FILES += udpgso udpgso_bench_tx udpgso_bench_rx ip_defrag -TEST_GEN_FILES += so_txtime ipv6_flowlabel ipv6_flowlabel_mgr so_netns_cookie -TEST_GEN_FILES += tcp_fastopen_backup_key -TEST_GEN_FILES += fin_ack_lat -TEST_GEN_FILES += reuseaddr_ports_exhausted -TEST_GEN_FILES += hwtstamp_config rxtimestamp timestamping txtimestamp -TEST_GEN_FILES += ipsec -TEST_GEN_FILES += ioam6_parser -TEST_GEN_FILES += gro -TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa -TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict tls tun tap epoll_busy_poll -TEST_GEN_FILES += toeplitz -TEST_GEN_FILES += cmsg_sender -TEST_GEN_FILES += stress_reuseport_listen -TEST_GEN_FILES += so_rcv_listener -TEST_PROGS += test_vxlan_vnifiltering.sh -TEST_GEN_FILES += io_uring_zerocopy_tx -TEST_PROGS += io_uring_zerocopy_tx.sh -TEST_GEN_FILES += bind_bhash -TEST_GEN_PROGS += sk_bind_sendto_listen -TEST_GEN_PROGS += sk_connect_zero_addr -TEST_GEN_PROGS += sk_so_peek_off -TEST_PROGS += test_ingress_egress_chaining.sh -TEST_GEN_PROGS += so_incoming_cpu -TEST_PROGS += sctp_vrf.sh -TEST_GEN_FILES += sctp_hello -TEST_GEN_FILES += ip_local_port_range -TEST_GEN_PROGS += bind_wildcard -TEST_GEN_PROGS += bind_timewait -TEST_PROGS += test_vxlan_mdb.sh -TEST_PROGS += test_bridge_neigh_suppress.sh -TEST_PROGS += test_vxlan_nh.sh -TEST_PROGS += test_vxlan_nolocalbypass.sh -TEST_PROGS += test_bridge_backup_port.sh -TEST_PROGS += test_neigh.sh -TEST_PROGS += fdb_flush.sh fdb_notify.sh -TEST_PROGS += fq_band_pktlimit.sh -TEST_PROGS += vlan_hw_filter.sh -TEST_PROGS += vlan_bridge_binding.sh -TEST_PROGS += bpf_offload.py -TEST_PROGS += ipv6_route_update_soft_lockup.sh -TEST_PROGS += busy_poll_test.sh -TEST_GEN_PROGS += proc_net_pktgen -TEST_PROGS += lwt_dst_cache_ref_loop.sh -TEST_PROGS += skf_net_off.sh -TEST_GEN_FILES += skf_net_off -TEST_GEN_FILES += tfo -TEST_PROGS += tfo_passive.sh -TEST_PROGS += broadcast_ether_dst.sh -TEST_PROGS += broadcast_pmtu.sh -TEST_PROGS += ipv6_force_forwarding.sh -TEST_GEN_PROGS += ipv6_fragmentation -TEST_PROGS += route_hint.sh -TEST_GEN_PROGS += tcp_port_share +TEST_PROGS := \ + altnames.sh \ + amt.sh \ + arp_ndisc_evict_nocarrier.sh \ + arp_ndisc_untracked_subnets.sh \ + bareudp.sh \ + big_tcp.sh \ + bind_bhash.sh \ + bpf_offload.py \ + broadcast_ether_dst.sh \ + broadcast_pmtu.sh \ + busy_poll_test.sh \ + cmsg_ip.sh \ + cmsg_so_mark.sh \ + cmsg_so_priority.sh \ + cmsg_time.sh \ + drop_monitor_tests.sh \ + fcnal-ipv4.sh \ + fcnal-ipv6.sh \ + fcnal-other.sh \ + fdb_flush.sh \ + fdb_notify.sh \ + fib-onlink-tests.sh \ + fib_nexthop_multiprefix.sh \ + fib_nexthop_nongw.sh \ + fib_nexthops.sh \ + fib_rule_tests.sh \ + fib_tests.sh \ + fin_ack_lat.sh \ + fq_band_pktlimit.sh \ + gre_gso.sh \ + gre_ipv6_lladdr.sh \ + gro.sh \ + icmp.sh \ + icmp_redirect.sh \ + io_uring_zerocopy_tx.sh \ + ioam6.sh \ + ip6_gre_headroom.sh \ + ip_defrag.sh \ + ip_local_port_range.sh \ + ipv6_flowlabel.sh \ + ipv6_force_forwarding.sh \ + ipv6_route_update_soft_lockup.sh \ + l2_tos_ttl_inherit.sh \ + l2tp.sh \ + link_netns.py \ + lwt_dst_cache_ref_loop.sh \ + msg_zerocopy.sh \ + nat6to4.sh \ + ndisc_unsolicited_na_test.sh \ + netdev-l2addr.sh \ + netdevice.sh \ + netns-name.sh \ + netns-sysctl.sh \ + nl_netdev.py \ + pmtu.sh \ + psock_snd.sh \ + reuseaddr_ports_exhausted.sh \ + reuseport_addr_any.sh \ + route_hint.sh \ + route_localnet.sh \ + rps_default_mask.sh \ + rtnetlink.py \ + rtnetlink.sh \ + rtnetlink_notification.sh \ + run_afpackettests \ + run_netsocktests \ + rxtimestamp.sh \ + sctp_vrf.sh \ + skf_net_off.sh \ + so_txtime.sh \ + srv6_end_dt46_l3vpn_test.sh \ + srv6_end_dt4_l3vpn_test.sh \ + srv6_end_dt6_l3vpn_test.sh \ + srv6_end_dx4_netfilter_test.sh \ + srv6_end_dx6_netfilter_test.sh \ + srv6_end_flavors_test.sh \ + srv6_end_next_csid_l3vpn_test.sh \ + srv6_end_x_next_csid_l3vpn_test.sh \ + srv6_hencap_red_l3vpn_test.sh \ + srv6_hl2encap_red_l2vpn_test.sh \ + stress_reuseport_listen.sh \ + tcp_fastopen_backup_key.sh \ + test_bpf.sh \ + test_bridge_backup_port.sh \ + test_bridge_neigh_suppress.sh \ + test_ingress_egress_chaining.sh \ + test_neigh.sh \ + test_so_rcv.sh \ + test_vxlan_fdb_changelink.sh \ + test_vxlan_mdb.sh \ + test_vxlan_nh.sh \ + test_vxlan_nolocalbypass.sh \ + test_vxlan_under_vrf.sh \ + test_vxlan_vnifiltering.sh \ + tfo_passive.sh \ + traceroute.sh \ + txtimestamp.sh \ + udpgro.sh \ + udpgro_bench.sh \ + udpgro_frglist.sh \ + udpgro_fwd.sh \ + udpgso.sh \ + udpgso_bench.sh \ + unicast_extensions.sh \ + veth.sh \ + vlan_bridge_binding.sh \ + vlan_hw_filter.sh \ + vrf-xfrm-tests.sh \ + vrf_route_leaking.sh \ + vrf_strict_mode_test.sh \ + xfrm_policy.sh \ +# end of TEST_PROGS + +TEST_PROGS_EXTENDED := \ + toeplitz.sh \ + toeplitz_client.sh \ + xfrm_policy_add_speed.sh \ +# end of TEST_PROGS_EXTENDED + +TEST_GEN_FILES := \ + bind_bhash \ + cmsg_sender \ + fin_ack_lat \ + gro \ + hwtstamp_config \ + io_uring_zerocopy_tx \ + ioam6_parser \ + ip_defrag \ + ip_local_port_range \ + ipsec \ + ipv6_flowlabel \ + ipv6_flowlabel_mgr \ + msg_zerocopy \ + nettest \ + psock_fanout \ + psock_snd \ + psock_tpacket \ + reuseaddr_ports_exhausted \ + reuseport_addr_any \ + rxtimestamp \ + sctp_hello \ + skf_net_off \ + so_netns_cookie \ + so_rcv_listener \ + so_txtime \ + socket \ + stress_reuseport_listen \ + tcp_fastopen_backup_key \ + tcp_inq \ + tcp_mmap \ + tfo \ + timestamping \ + toeplitz \ + txring_overwrite \ + txtimestamp \ + udpgso \ + udpgso_bench_rx \ + udpgso_bench_tx \ +# end of TEST_GEN_FILES + +TEST_GEN_PROGS := \ + bind_timewait \ + bind_wildcard \ + epoll_busy_poll \ + ipv6_fragmentation \ + proc_net_pktgen \ + reuseaddr_conflict \ + reuseport_bpf \ + reuseport_bpf_cpu \ + reuseport_bpf_numa \ + reuseport_dualstack \ + sk_bind_sendto_listen \ + sk_connect_zero_addr \ + sk_so_peek_off \ + so_incoming_cpu \ + tap \ + tcp_port_share \ + tls \ + tun \ +# end of TEST_GEN_PROGS + +TEST_FILES := \ + fcnal-test.sh \ + in_netns.sh \ + lib.sh \ + settings \ + setup_loopback.sh \ + setup_veth.sh \ +# end of TEST_FILES # YNL files, must be before "include ..lib.mk" YNL_GEN_FILES := busy_poller @@ -130,10 +203,6 @@ YNL_GEN_PROGS := netlink-dumps TEST_GEN_FILES += $(YNL_GEN_FILES) TEST_GEN_PROGS += $(YNL_GEN_PROGS) -TEST_FILES := settings -TEST_FILES += fcnal-test.sh -TEST_FILES += in_netns.sh lib.sh setup_loopback.sh setup_veth.sh - TEST_GEN_FILES += $(patsubst %.c,%.o,$(wildcard *.bpf.c)) TEST_INCLUDES := forwarding/lib.sh diff --git a/tools/testing/selftests/net/af_unix/Makefile b/tools/testing/selftests/net/af_unix/Makefile index 0a20c98bbcfd..de805cbbdf69 100644 --- a/tools/testing/selftests/net/af_unix/Makefile +++ b/tools/testing/selftests/net/af_unix/Makefile @@ -1,4 +1,12 @@ CFLAGS += $(KHDR_INCLUDES) -Wall -Wflex-array-member-not-at-end -TEST_GEN_PROGS := diag_uid msg_oob scm_inq scm_pidfd scm_rights unix_connect + +TEST_GEN_PROGS := \ + diag_uid \ + msg_oob \ + scm_inq \ + scm_pidfd \ + scm_rights \ + unix_connect \ +# end of TEST_GEN_PROGS include ../../lib.mk diff --git a/tools/testing/selftests/net/forwarding/Makefile b/tools/testing/selftests/net/forwarding/Makefile index e6f482a600da..ff4a00d91a26 100644 --- a/tools/testing/selftests/net/forwarding/Makefile +++ b/tools/testing/selftests/net/forwarding/Makefile @@ -1,11 +1,11 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = \ +TEST_PROGS := \ bridge_activity_notify.sh \ bridge_fdb_learning_limit.sh \ + bridge_fdb_local_vlan_0.sh \ bridge_igmp.sh \ bridge_locked_port.sh \ - bridge_fdb_local_vlan_0.sh \ bridge_mdb.sh \ bridge_mdb_host.sh \ bridge_mdb_max.sh \ @@ -21,64 +21,64 @@ TEST_PROGS = \ gre_custom_multipath_hash.sh \ gre_inner_v4_multipath.sh \ gre_inner_v6_multipath.sh \ - gre_multipath_nh_res.sh \ - gre_multipath_nh.sh \ gre_multipath.sh \ + gre_multipath_nh.sh \ + gre_multipath_nh_res.sh \ ip6_forward_instats_vrf.sh \ ip6gre_custom_multipath_hash.sh \ + ip6gre_flat.sh \ ip6gre_flat_key.sh \ ip6gre_flat_keys.sh \ - ip6gre_flat.sh \ + ip6gre_hier.sh \ ip6gre_hier_key.sh \ ip6gre_hier_keys.sh \ - ip6gre_hier.sh \ ip6gre_inner_v4_multipath.sh \ ip6gre_inner_v6_multipath.sh \ + ipip_flat_gre.sh \ ipip_flat_gre_key.sh \ ipip_flat_gre_keys.sh \ - ipip_flat_gre.sh \ + ipip_hier_gre.sh \ ipip_hier_gre_key.sh \ ipip_hier_gre_keys.sh \ - ipip_hier_gre.sh \ lib_sh_test.sh \ local_termination.sh \ min_max_mtu.sh \ + mirror_gre.sh \ mirror_gre_bound.sh \ mirror_gre_bridge_1d.sh \ mirror_gre_bridge_1d_vlan.sh \ - mirror_gre_bridge_1q_lag.sh \ mirror_gre_bridge_1q.sh \ + mirror_gre_bridge_1q_lag.sh \ mirror_gre_changes.sh \ mirror_gre_flower.sh \ mirror_gre_lag_lacp.sh \ mirror_gre_neigh.sh \ mirror_gre_nh.sh \ - mirror_gre.sh \ - mirror_gre_vlan_bridge_1q.sh \ mirror_gre_vlan.sh \ + mirror_gre_vlan_bridge_1q.sh \ mirror_vlan.sh \ no_forwarding.sh \ pedit_dsfield.sh \ pedit_ip.sh \ pedit_l4port.sh \ - q_in_vni_ipv6.sh \ q_in_vni.sh \ + q_in_vni_ipv6.sh \ + router.sh \ router_bridge.sh \ router_bridge_1d.sh \ router_bridge_1d_lag.sh \ router_bridge_lag.sh \ + router_bridge_pvid_vlan_upper.sh \ router_bridge_vlan.sh \ router_bridge_vlan_upper.sh \ - router_bridge_pvid_vlan_upper.sh \ router_bridge_vlan_upper_pvid.sh \ router_broadcast.sh \ - router_mpath_nh_res.sh \ router_mpath_nh.sh \ + router_mpath_nh_res.sh \ router_mpath_seed.sh \ router_multicast.sh \ router_multipath.sh \ router_nh.sh \ - router.sh \ router_vid_1.sh \ sch_ets.sh \ sch_red.sh \ @@ -88,32 +88,34 @@ TEST_PROGS = \ skbedit_priority.sh \ tc_actions.sh \ tc_chains.sh \ - tc_flower_router.sh \ tc_flower.sh \ - tc_flower_l2_miss.sh \ tc_flower_cfm.sh \ + tc_flower_l2_miss.sh \ tc_flower_port_range.sh \ + tc_flower_router.sh \ tc_mpls_l2vpn.sh \ tc_police.sh \ tc_shblocks.sh \ tc_tunnel_key.sh \ tc_vlan_modify.sh \ - vxlan_asymmetric_ipv6.sh \ vxlan_asymmetric.sh \ - vxlan_bridge_1d_ipv6.sh \ - vxlan_bridge_1d_port_8472_ipv6.sh \ - vxlan_bridge_1d_port_8472.sh \ + vxlan_asymmetric_ipv6.sh \ vxlan_bridge_1d.sh \ + vxlan_bridge_1d_ipv6.sh \ + vxlan_bridge_1d_port_8472.sh \ + vxlan_bridge_1d_port_8472_ipv6.sh \ + vxlan_bridge_1q.sh \ vxlan_bridge_1q_ipv6.sh \ vxlan_bridge_1q_mc_ul.sh \ - vxlan_bridge_1q_port_8472_ipv6.sh \ vxlan_bridge_1q_port_8472.sh \ - vxlan_bridge_1q.sh \ + vxlan_bridge_1q_port_8472_ipv6.sh \ vxlan_reserved.sh \ + vxlan_symmetric.sh \ vxlan_symmetric_ipv6.sh \ - vxlan_symmetric.sh +# end of TEST_PROGS -TEST_FILES := devlink_lib.sh \ +TEST_FILES := \ + devlink_lib.sh \ fib_offload_lib.sh \ forwarding.config.sample \ ip6gre_lib.sh \ @@ -128,10 +130,12 @@ TEST_FILES := devlink_lib.sh \ sch_ets_tests.sh \ sch_tbf_core.sh \ sch_tbf_etsprio.sh \ - tc_common.sh + tc_common.sh \ +# end of TEST_FILES TEST_INCLUDES := \ + $(wildcard ../lib/sh/*.sh) \ ../lib.sh \ - $(wildcard ../lib/sh/*.sh) +# end of TEST_INCLUDES include ../../lib.mk diff --git a/tools/testing/selftests/net/hsr/Makefile b/tools/testing/selftests/net/hsr/Makefile index 884cd2cc0681..4b6afc0fe9f8 100644 --- a/tools/testing/selftests/net/hsr/Makefile +++ b/tools/testing/selftests/net/hsr/Makefile @@ -2,7 +2,11 @@ top_srcdir = ../../../../.. -TEST_PROGS := hsr_ping.sh hsr_redbox.sh +TEST_PROGS := \ + hsr_ping.sh \ + hsr_redbox.sh \ +# end of TEST_PROGS + TEST_FILES += hsr_common.sh include ../../lib.mk diff --git a/tools/testing/selftests/net/lib/Makefile b/tools/testing/selftests/net/lib/Makefile index 88c4bc461459..ce795bc0a1af 100644 --- a/tools/testing/selftests/net/lib/Makefile +++ b/tools/testing/selftests/net/lib/Makefile @@ -5,12 +5,16 @@ CFLAGS += -I../../../../../usr/include/ $(KHDR_INCLUDES) # Additional include paths needed by kselftest.h CFLAGS += -I../../ -TEST_FILES := ../../../../../Documentation/netlink/specs -TEST_FILES += ../../../../net/ynl +TEST_FILES := \ + ../../../../net/ynl \ + ../../../../../Documentation/netlink/specs \ +# end of TEST_FILES -TEST_GEN_FILES += csum -TEST_GEN_FILES += $(patsubst %.c,%.o,$(wildcard *.bpf.c)) -TEST_GEN_FILES += xdp_helper +TEST_GEN_FILES := \ + $(patsubst %.c,%.o,$(wildcard *.bpf.c)) \ + csum \ + xdp_helper \ +# end of TEST_GEN_FILES TEST_INCLUDES := $(wildcard py/*.py sh/*.sh) diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile index 4c7e51336ab2..15d144a25d82 100644 --- a/tools/testing/selftests/net/mptcp/Makefile +++ b/tools/testing/selftests/net/mptcp/Makefile @@ -4,13 +4,31 @@ top_srcdir = ../../../../.. CFLAGS += -Wall -Wl,--no-as-needed -O2 -g -I$(top_srcdir)/usr/include $(KHDR_INCLUDES) -TEST_PROGS := mptcp_connect.sh mptcp_connect_mmap.sh mptcp_connect_sendfile.sh \ - mptcp_connect_checksum.sh pm_netlink.sh mptcp_join.sh diag.sh \ - simult_flows.sh mptcp_sockopt.sh userspace_pm.sh +TEST_PROGS := \ + diag.sh \ + mptcp_connect.sh \ + mptcp_connect_checksum.sh \ + mptcp_connect_mmap.sh \ + mptcp_connect_sendfile.sh \ + mptcp_join.sh \ + mptcp_sockopt.sh \ + pm_netlink.sh \ + simult_flows.sh \ + userspace_pm.sh \ +# end of TEST_PROGS -TEST_GEN_FILES = mptcp_connect pm_nl_ctl mptcp_sockopt mptcp_inq mptcp_diag +TEST_GEN_FILES := \ + mptcp_connect \ + mptcp_diag \ + mptcp_inq \ + mptcp_sockopt \ + pm_nl_ctl \ +# end of TEST_GEN_FILES -TEST_FILES := mptcp_lib.sh settings +TEST_FILES := \ + mptcp_lib.sh \ + settings \ +# end of TEST_FILES TEST_INCLUDES := ../lib.sh $(wildcard ../lib/sh/*.sh) diff --git a/tools/testing/selftests/net/netfilter/Makefile b/tools/testing/selftests/net/netfilter/Makefile index a98ed892f55f..ee2d1a5254f8 100644 --- a/tools/testing/selftests/net/netfilter/Makefile +++ b/tools/testing/selftests/net/netfilter/Makefile @@ -6,46 +6,52 @@ HOSTPKG_CONFIG := pkg-config MNL_CFLAGS := $(shell $(HOSTPKG_CONFIG) --cflags libmnl 2>/dev/null) MNL_LDLIBS := $(shell $(HOSTPKG_CONFIG) --libs libmnl 2>/dev/null || echo -lmnl) -TEST_PROGS := br_netfilter.sh bridge_brouter.sh -TEST_PROGS += br_netfilter_queue.sh -TEST_PROGS += conntrack_dump_flush.sh -TEST_PROGS += conntrack_icmp_related.sh -TEST_PROGS += conntrack_ipip_mtu.sh -TEST_PROGS += conntrack_tcp_unreplied.sh -TEST_PROGS += conntrack_resize.sh -TEST_PROGS += conntrack_sctp_collision.sh -TEST_PROGS += conntrack_vrf.sh -TEST_PROGS += conntrack_clash.sh -TEST_PROGS += conntrack_reverse_clash.sh -TEST_PROGS += ipvs.sh -TEST_PROGS += nf_conntrack_packetdrill.sh -TEST_PROGS += nf_nat_edemux.sh -TEST_PROGS += nft_audit.sh -TEST_PROGS += nft_concat_range.sh -TEST_PROGS += nft_conntrack_helper.sh -TEST_PROGS += nft_fib.sh -TEST_PROGS += nft_flowtable.sh -TEST_PROGS += nft_interface_stress.sh -TEST_PROGS += nft_meta.sh -TEST_PROGS += nft_nat.sh -TEST_PROGS += nft_nat_zones.sh -TEST_PROGS += nft_queue.sh -TEST_PROGS += nft_synproxy.sh -TEST_PROGS += nft_tproxy_tcp.sh -TEST_PROGS += nft_tproxy_udp.sh -TEST_PROGS += nft_zones_many.sh -TEST_PROGS += rpath.sh -TEST_PROGS += vxlan_mtu_frag.sh -TEST_PROGS += xt_string.sh +TEST_PROGS := \ + br_netfilter.sh \ + br_netfilter_queue.sh \ + bridge_brouter.sh \ + conntrack_clash.sh \ + conntrack_dump_flush.sh \ + conntrack_icmp_related.sh \ + conntrack_ipip_mtu.sh \ + conntrack_resize.sh \ + conntrack_reverse_clash.sh \ + conntrack_sctp_collision.sh \ + conntrack_tcp_unreplied.sh \ + conntrack_vrf.sh \ + ipvs.sh \ + nf_conntrack_packetdrill.sh \ + nf_nat_edemux.sh \ + nft_audit.sh \ + nft_concat_range.sh \ + nft_conntrack_helper.sh \ + nft_fib.sh \ + nft_flowtable.sh \ + nft_interface_stress.sh \ + nft_meta.sh \ + nft_nat.sh \ + nft_nat_zones.sh \ + nft_queue.sh \ + nft_synproxy.sh \ + nft_tproxy_tcp.sh \ + nft_tproxy_udp.sh \ + nft_zones_many.sh \ + rpath.sh \ + vxlan_mtu_frag.sh \ + xt_string.sh \ +# end of TEST_PROGS TEST_PROGS_EXTENDED = nft_concat_range_perf.sh -TEST_GEN_FILES = audit_logread -TEST_GEN_FILES += connect_close nf_queue -TEST_GEN_FILES += conntrack_dump_flush -TEST_GEN_FILES += conntrack_reverse_clash -TEST_GEN_FILES += sctp_collision -TEST_GEN_FILES += udpclash +TEST_GEN_FILES = \ + audit_logread \ + connect_close \ + conntrack_dump_flush \ + conntrack_reverse_clash \ + nf_queue \ + sctp_collision \ + udpclash \ +# end of TEST_GEN_FILES include ../../lib.mk @@ -56,9 +62,12 @@ $(OUTPUT)/conntrack_dump_flush: CFLAGS += $(MNL_CFLAGS) $(OUTPUT)/conntrack_dump_flush: LDLIBS += $(MNL_LDLIBS) $(OUTPUT)/udpclash: LDLIBS += -lpthread -TEST_FILES := lib.sh -TEST_FILES += packetdrill +TEST_FILES := \ + lib.sh \ + packetdrill \ +# end of TEST_FILES TEST_INCLUDES := \ + $(wildcard ../lib/sh/*.sh) \ ../lib.sh \ - $(wildcard ../lib/sh/*.sh) +# end of TEST_INCLUDES diff --git a/tools/testing/selftests/net/ovpn/Makefile b/tools/testing/selftests/net/ovpn/Makefile index e0926d76b4c8..dbe0388c8512 100644 --- a/tools/testing/selftests/net/ovpn/Makefile +++ b/tools/testing/selftests/net/ovpn/Makefile @@ -19,13 +19,15 @@ LDLIBS += $(VAR_LDLIBS) TEST_FILES = common.sh -TEST_PROGS = test.sh \ - test-large-mtu.sh \ +TEST_PROGS := \ test-chachapoly.sh \ - test-tcp.sh \ - test-float.sh \ + test-close-socket-tcp.sh \ test-close-socket.sh \ - test-close-socket-tcp.sh + test-float.sh \ + test-large-mtu.sh \ + test-tcp.sh \ + test.sh \ +# end of TEST_PROGS TEST_GEN_FILES := ovpn-cli diff --git a/tools/testing/selftests/net/packetdrill/Makefile b/tools/testing/selftests/net/packetdrill/Makefile index 31cfb666ba8b..ff54641493e9 100644 --- a/tools/testing/selftests/net/packetdrill/Makefile +++ b/tools/testing/selftests/net/packetdrill/Makefile @@ -1,9 +1,11 @@ # SPDX-License-Identifier: GPL-2.0 -TEST_INCLUDES := ksft_runner.sh \ - defaults.sh \ - set_sysctls.py \ - ../../kselftest/ktap_helpers.sh +TEST_INCLUDES := \ + defaults.sh \ + ksft_runner.sh \ + set_sysctls.py \ + ../../kselftest/ktap_helpers.sh \ +# end of TEST_INCLUDES TEST_PROGS := $(wildcard *.pkt) diff --git a/tools/testing/selftests/net/rds/Makefile b/tools/testing/selftests/net/rds/Makefile index 612a7219990e..762845cc973c 100644 --- a/tools/testing/selftests/net/rds/Makefile +++ b/tools/testing/selftests/net/rds/Makefile @@ -5,8 +5,14 @@ TEST_PROGS := run.sh -TEST_FILES := include.sh test.py +TEST_FILES := \ + include.sh \ + test.py \ +# end of TEST_FILES -EXTRA_CLEAN := /tmp/rds_logs include.sh +EXTRA_CLEAN := \ + include.sh \ + /tmp/rds_logs \ +# end of EXTRA_CLEAN include ../../lib.mk -- 2.51.0

1 week, 5 days

3
3
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[PATCH net repost] selftests: net: sort configs

by Jakub Kicinski

Sort config files for networking selftests. This should help us avoid merge conflicts between net and net-next. patchwork check will be added to prevent new issues. Acked-by: Phil Sutter <phil(a)nwl.cc> Acked-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> Acked-by: Florian Westphal <fw(a)strlen.de> Acked-by: Antonio Quartulli <antonio(a)openvpn.net> Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- repost after the PR made the tree designation correct v1: https://lore.kernel.org/20251002015245.3209033-1-kuba@kernel.org CC: jv(a)jvosburgh.net CC: shuah(a)kernel.org CC: kuniyu(a)google.com CC: martineau(a)kernel.org CC: geliang(a)kernel.org CC: pablo(a)netfilter.org CC: kadlec(a)netfilter.org CC: sd(a)queasysnail.net CC: razor(a)blackwall.org CC: idosch(a)nvidia.com CC: yongwang(a)nvidia.com CC: jiri(a)resnulli.us CC: danishanwar(a)ti.com CC: linux-kselftest(a)vger.kernel.org CC: mptcp(a)lists.linux.dev CC: netfilter-devel(a)vger.kernel.org CC: coreteam(a)netfilter.org --- .../selftests/drivers/net/bonding/config | 8 +- tools/testing/selftests/drivers/net/config | 2 +- tools/testing/selftests/net/af_unix/config | 2 +- tools/testing/selftests/net/config | 140 +++++++++--------- tools/testing/selftests/net/forwarding/config | 34 ++--- tools/testing/selftests/net/hsr/config | 4 +- tools/testing/selftests/net/mptcp/config | 48 +++--- tools/testing/selftests/net/netfilter/config | 58 ++++---- tools/testing/selftests/net/ovpn/config | 12 +- .../testing/selftests/net/packetdrill/config | 4 +- tools/testing/selftests/net/tcp_ao/config | 2 +- 11 files changed, 157 insertions(+), 157 deletions(-) diff --git a/tools/testing/selftests/drivers/net/bonding/config b/tools/testing/selftests/drivers/net/bonding/config index e5b7a8db4dfa..6bb290abd48b 100644 --- a/tools/testing/selftests/drivers/net/bonding/config +++ b/tools/testing/selftests/drivers/net/bonding/config @@ -1,17 +1,17 @@ CONFIG_BONDING=y CONFIG_BRIDGE=y CONFIG_DUMMY=y +CONFIG_INET_ESP=y +CONFIG_INET_ESP_OFFLOAD=y CONFIG_IPV6=y -CONFIG_MACVLAN=y CONFIG_IPVLAN=y +CONFIG_MACVLAN=y CONFIG_NET_ACT_GACT=y CONFIG_NET_CLS_FLOWER=y CONFIG_NET_CLS_MATCHALL=m +CONFIG_NETDEVSIM=m CONFIG_NET_SCH_INGRESS=y CONFIG_NLMON=y CONFIG_VETH=y CONFIG_VLAN_8021Q=m -CONFIG_INET_ESP=y -CONFIG_INET_ESP_OFFLOAD=y CONFIG_XFRM_USER=m -CONFIG_NETDEVSIM=m diff --git a/tools/testing/selftests/drivers/net/config b/tools/testing/selftests/drivers/net/config index 601431248d5b..77ccf83d87e0 100644 --- a/tools/testing/selftests/drivers/net/config +++ b/tools/testing/selftests/drivers/net/config @@ -3,8 +3,8 @@ CONFIG_DEBUG_INFO_BTF=y CONFIG_DEBUG_INFO_BTF_MODULES=n CONFIG_INET_PSP=y CONFIG_IPV6=y -CONFIG_NETDEVSIM=m CONFIG_NETCONSOLE=m CONFIG_NETCONSOLE_DYNAMIC=y CONFIG_NETCONSOLE_EXTENDED_LOG=y +CONFIG_NETDEVSIM=m CONFIG_XDP_SOCKETS=y diff --git a/tools/testing/selftests/net/af_unix/config b/tools/testing/selftests/net/af_unix/config index 37368567768c..b5429c15a53c 100644 --- a/tools/testing/selftests/net/af_unix/config +++ b/tools/testing/selftests/net/af_unix/config @@ -1,3 +1,3 @@ -CONFIG_UNIX=y CONFIG_AF_UNIX_OOB=y +CONFIG_UNIX=y CONFIG_UNIX_DIAG=m diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index d548611e2698..1e1f253118f5 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -1,130 +1,130 @@ -CONFIG_USER_NS=y -CONFIG_NET_NS=y +CONFIG_AMT=m +CONFIG_BAREUDP=m CONFIG_BONDING=m CONFIG_BPF_SYSCALL=y -CONFIG_TEST_BPF=m -CONFIG_NUMA=y -CONFIG_RPS=y -CONFIG_SYSFS=y -CONFIG_PROC_SYSCTL=y -CONFIG_NET_VRF=y -CONFIG_NET_L3_MASTER_DEV=y -CONFIG_IPV6=y -CONFIG_IPV6_MULTIPLE_TABLES=y -CONFIG_VETH=y -CONFIG_NET_IPVTI=y -CONFIG_IPV6_VTI=y -CONFIG_DUMMY=y -CONFIG_BRIDGE_VLAN_FILTERING=y CONFIG_BRIDGE=y +CONFIG_BRIDGE_VLAN_FILTERING=y +CONFIG_CAN=m +CONFIG_CAN_DEV=m +CONFIG_CAN_VXCAN=m +CONFIG_CRYPTO_ARIA=y CONFIG_CRYPTO_CHACHA20POLY1305=m +CONFIG_CRYPTO_SHA1=y +CONFIG_CRYPTO_SM4_GENERIC=y CONFIG_DEBUG_INFO_BTF=y CONFIG_DEBUG_INFO_BTF_MODULES=n -CONFIG_VLAN_8021Q=y +CONFIG_DUMMY=y CONFIG_GENEVE=m CONFIG_IFB=y CONFIG_INET_DIAG=y CONFIG_INET_ESP=y CONFIG_INET_ESP_OFFLOAD=y -CONFIG_CRYPTO_SHA1=y -CONFIG_NET_FOU=y -CONFIG_NET_FOU_IP_TUNNELS=y -CONFIG_NETFILTER=y -CONFIG_NETFILTER_ADVANCED=y -CONFIG_NETFILTER_XTABLES_LEGACY=y -CONFIG_NF_CONNTRACK=m -CONFIG_IPV6_MROUTE=y -CONFIG_IPV6_SIT=y -CONFIG_NF_NAT=m +CONFIG_IP6_NF_FILTER=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_IPTABLES_LEGACY=m -CONFIG_IP_NF_IPTABLES=m -CONFIG_IP_NF_IPTABLES_LEGACY=m CONFIG_IP6_NF_MANGLE=m -CONFIG_IP6_NF_FILTER=m +CONFIG_IP6_NF_MATCH_RPFILTER=m CONFIG_IP6_NF_NAT=m CONFIG_IP6_NF_RAW=m -CONFIG_IP_NF_MANGLE=m +CONFIG_IP6_NF_TARGET_REJECT=m CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_IPTABLES=m +CONFIG_IP_NF_IPTABLES_LEGACY=m +CONFIG_IP_NF_MANGLE=m +CONFIG_IP_NF_MATCH_RPFILTER=m CONFIG_IP_NF_NAT=m CONFIG_IP_NF_RAW=m CONFIG_IP_NF_TARGET_REJECT=m -CONFIG_IP6_NF_TARGET_REJECT=m CONFIG_IP_NF_TARGET_TTL=m +CONFIG_IP_SCTP=m +CONFIG_IPV6=y CONFIG_IPV6_GRE=m +CONFIG_IPV6_ILA=m +CONFIG_IPV6_IOAM6_LWTUNNEL=y +CONFIG_IPV6_MROUTE=y +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_IPV6_RPL_LWTUNNEL=y CONFIG_IPV6_SEG6_LWTUNNEL=y +CONFIG_IPV6_SIT=y +CONFIG_IPV6_VTI=y +CONFIG_IPVLAN=m +CONFIG_KALLSYMS=y +CONFIG_L2TP=m CONFIG_L2TP_ETH=m CONFIG_L2TP_IP=m -CONFIG_L2TP=m CONFIG_L2TP_V3=y CONFIG_MACSEC=m CONFIG_MACVLAN=y CONFIG_MACVTAP=y CONFIG_MPLS=y +CONFIG_MPLS_IPTUNNEL=m +CONFIG_MPLS_ROUTING=m CONFIG_MPTCP=y -CONFIG_NF_TABLES=m -CONFIG_NF_TABLES_IPV6=y -CONFIG_NF_TABLES_IPV4=y -CONFIG_NFT_NAT=m -CONFIG_NETFILTER_XT_MATCH_LENGTH=m -CONFIG_NETFILTER_XT_TARGET_HL=m -CONFIG_NETFILTER_XT_NAT=m CONFIG_NET_ACT_CSUM=m CONFIG_NET_ACT_CT=m CONFIG_NET_ACT_GACT=m +CONFIG_NET_ACT_MIRRED=m CONFIG_NET_ACT_PEDIT=m +CONFIG_NET_ACT_TUNNEL_KEY=m CONFIG_NET_CLS_BASIC=m CONFIG_NET_CLS_BPF=m +CONFIG_NET_CLS_FLOWER=m CONFIG_NET_CLS_MATCHALL=m CONFIG_NET_CLS_U32=m -CONFIG_NET_IPGRE_DEMUX=m +CONFIG_NETDEVSIM=m +CONFIG_NET_DROP_MONITOR=m +CONFIG_NETFILTER=y +CONFIG_NETFILTER_ADVANCED=y +CONFIG_NETFILTER_XTABLES_LEGACY=y +CONFIG_NETFILTER_XT_MATCH_LENGTH=m +CONFIG_NETFILTER_XT_MATCH_POLICY=m +CONFIG_NETFILTER_XT_NAT=m +CONFIG_NETFILTER_XT_TARGET_HL=m +CONFIG_NET_FOU=y +CONFIG_NET_FOU_IP_TUNNELS=y CONFIG_NET_IPGRE=m +CONFIG_NET_IPGRE_DEMUX=m CONFIG_NET_IPIP=y +CONFIG_NET_IPVTI=y +CONFIG_NETKIT=y +CONFIG_NET_L3_MASTER_DEV=y +CONFIG_NET_NS=y +CONFIG_NET_PKTGEN=m +CONFIG_NET_SCH_ETF=m +CONFIG_NET_SCH_FQ=m CONFIG_NET_SCH_FQ_CODEL=m CONFIG_NET_SCH_HTB=m -CONFIG_NET_SCH_FQ=m -CONFIG_NET_SCH_ETF=m +CONFIG_NET_SCH_INGRESS=m CONFIG_NET_SCH_NETEM=y CONFIG_NET_SCH_PRIO=m -CONFIG_NFT_COMPAT=m +CONFIG_NET_VRF=y +CONFIG_NF_CONNTRACK=m CONFIG_NF_CONNTRACK_OVS=y CONFIG_NF_FLOW_TABLE=m +CONFIG_NF_NAT=m +CONFIG_NF_TABLES=m +CONFIG_NF_TABLES_IPV4=y +CONFIG_NF_TABLES_IPV6=y +CONFIG_NFT_COMPAT=m +CONFIG_NFT_NAT=m +CONFIG_NUMA=y CONFIG_OPENVSWITCH=m CONFIG_OPENVSWITCH_GENEVE=m CONFIG_OPENVSWITCH_GRE=m CONFIG_OPENVSWITCH_VXLAN=m +CONFIG_PROC_SYSCTL=y CONFIG_PSAMPLE=m +CONFIG_RPS=y +CONFIG_SYSFS=y CONFIG_TCP_MD5SIG=y CONFIG_TEST_BLACKHOLE_DEV=m -CONFIG_KALLSYMS=y +CONFIG_TEST_BPF=m CONFIG_TLS=m CONFIG_TRACEPOINTS=y -CONFIG_NET_DROP_MONITOR=m -CONFIG_NETDEVSIM=m -CONFIG_MPLS_ROUTING=m -CONFIG_MPLS_IPTUNNEL=m -CONFIG_NET_SCH_INGRESS=m -CONFIG_NET_CLS_FLOWER=m -CONFIG_NET_ACT_TUNNEL_KEY=m -CONFIG_NET_ACT_MIRRED=m -CONFIG_BAREUDP=m -CONFIG_IPV6_IOAM6_LWTUNNEL=y -CONFIG_CRYPTO_SM4_GENERIC=y -CONFIG_AMT=m CONFIG_TUN=y +CONFIG_USER_NS=y +CONFIG_VETH=y +CONFIG_VLAN_8021Q=y CONFIG_VXLAN=m -CONFIG_IP_SCTP=m -CONFIG_NETFILTER_XT_MATCH_POLICY=m -CONFIG_CRYPTO_ARIA=y CONFIG_XFRM_INTERFACE=m CONFIG_XFRM_USER=m -CONFIG_IP_NF_MATCH_RPFILTER=m -CONFIG_IP6_NF_MATCH_RPFILTER=m -CONFIG_IPVLAN=m -CONFIG_CAN=m -CONFIG_CAN_DEV=m -CONFIG_CAN_VXCAN=m -CONFIG_NETKIT=y -CONFIG_NET_PKTGEN=m -CONFIG_IPV6_ILA=m -CONFIG_IPV6_RPL_LWTUNNEL=y diff --git a/tools/testing/selftests/net/forwarding/config b/tools/testing/selftests/net/forwarding/config index 18fd69d8d937..ce64518aaa11 100644 --- a/tools/testing/selftests/net/forwarding/config +++ b/tools/testing/selftests/net/forwarding/config @@ -1,24 +1,23 @@ -CONFIG_BRIDGE=m -CONFIG_VLAN_8021Q=m -CONFIG_BRIDGE_VLAN_FILTERING=y -CONFIG_BRIDGE_IGMP_SNOOPING=y -CONFIG_NET_L3_MASTER_DEV=y -CONFIG_IPV6_MULTIPLE_TABLES=y -CONFIG_NET_VRF=m CONFIG_BPF_SYSCALL=y +CONFIG_BRIDGE=m +CONFIG_BRIDGE_IGMP_SNOOPING=y +CONFIG_BRIDGE_VLAN_FILTERING=y CONFIG_CGROUP_BPF=y CONFIG_DUMMY=m -CONFIG_IPV6=y -CONFIG_IPV6_GRE=m -CONFIG_IPV6_MROUTE=y -CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y -CONFIG_IPV6_PIMSM_V2=y CONFIG_IP_MROUTE=y CONFIG_IP_MROUTE_MULTIPLE_TABLES=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y +CONFIG_IPV6=y +CONFIG_IPV6_GRE=m +CONFIG_IPV6_MROUTE=y +CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_IPV6_PIMSM_V2=y CONFIG_MACVLAN=m +CONFIG_NAMESPACES=y CONFIG_NET_ACT_CT=m +CONFIG_NET_ACT_GACT=m CONFIG_NET_ACT_MIRRED=m CONFIG_NET_ACT_MPLS=m CONFIG_NET_ACT_PEDIT=m @@ -27,29 +26,30 @@ CONFIG_NET_ACT_SAMPLE=m CONFIG_NET_ACT_SKBEDIT=m CONFIG_NET_ACT_TUNNEL_KEY=m CONFIG_NET_ACT_VLAN=m +CONFIG_NET_CLS_BASIC=m CONFIG_NET_CLS_FLOWER=m CONFIG_NET_CLS_MATCHALL=m -CONFIG_NET_CLS_BASIC=m CONFIG_NET_EMATCH=y CONFIG_NET_EMATCH_META=m +CONFIG_NETFILTER=y CONFIG_NET_IPGRE=m CONFIG_NET_IPGRE_DEMUX=m CONFIG_NET_IPIP=m +CONFIG_NET_L3_MASTER_DEV=y +CONFIG_NET_NS=y CONFIG_NET_SCH_ETS=m CONFIG_NET_SCH_INGRESS=m -CONFIG_NET_ACT_GACT=m CONFIG_NET_SCH_PRIO=m CONFIG_NET_SCH_RED=m CONFIG_NET_SCH_TBF=m CONFIG_NET_TC_SKB_EXT=y CONFIG_NET_TEAM=y CONFIG_NET_TEAM_MODE_LOADBALANCE=y -CONFIG_NETFILTER=y +CONFIG_NET_VRF=m CONFIG_NF_CONNTRACK=m CONFIG_NF_FLOW_TABLE=m CONFIG_NF_TABLES=m CONFIG_VETH=m -CONFIG_NAMESPACES=y -CONFIG_NET_NS=y +CONFIG_VLAN_8021Q=m CONFIG_VXLAN=m CONFIG_XFRM_USER=m diff --git a/tools/testing/selftests/net/hsr/config b/tools/testing/selftests/net/hsr/config index 555a868743f0..205cc4d3d64b 100644 --- a/tools/testing/selftests/net/hsr/config +++ b/tools/testing/selftests/net/hsr/config @@ -1,6 +1,6 @@ +CONFIG_BRIDGE=y +CONFIG_HSR=y CONFIG_IPV6=y CONFIG_NET_SCH_NETEM=m -CONFIG_HSR=y CONFIG_VETH=y -CONFIG_BRIDGE=y CONFIG_VLAN_8021Q=m diff --git a/tools/testing/selftests/net/mptcp/config b/tools/testing/selftests/net/mptcp/config index 968d440c03fe..59051ee2a986 100644 --- a/tools/testing/selftests/net/mptcp/config +++ b/tools/testing/selftests/net/mptcp/config @@ -1,36 +1,36 @@ -CONFIG_KALLSYMS=y -CONFIG_MPTCP=y -CONFIG_IPV6=y -CONFIG_MPTCP_IPV6=y CONFIG_INET_DIAG=m CONFIG_INET_MPTCP_DIAG=m -CONFIG_VETH=y -CONFIG_NET_SCH_NETEM=m -CONFIG_SYN_COOKIES=y +CONFIG_IP6_NF_FILTER=m +CONFIG_IP6_NF_TARGET_REJECT=m +CONFIG_IP_ADVANCED_ROUTER=y +CONFIG_IP_MULTIPLE_TABLES=y +CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_MANGLE=m +CONFIG_IP_NF_TARGET_REJECT=m +CONFIG_IPV6=y +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_KALLSYMS=y +CONFIG_MPTCP=y +CONFIG_MPTCP_IPV6=y +CONFIG_NET_ACT_CSUM=m +CONFIG_NET_ACT_PEDIT=m +CONFIG_NET_CLS_ACT=y +CONFIG_NET_CLS_FW=m CONFIG_NETFILTER=y CONFIG_NETFILTER_ADVANCED=y CONFIG_NETFILTER_NETLINK=m -CONFIG_NF_TABLES=m -CONFIG_NFT_COMPAT=m CONFIG_NETFILTER_XTABLES=m CONFIG_NETFILTER_XTABLES_LEGACY=y CONFIG_NETFILTER_XT_MATCH_BPF=m CONFIG_NETFILTER_XT_MATCH_LENGTH=m CONFIG_NETFILTER_XT_MATCH_STATISTIC=m CONFIG_NETFILTER_XT_TARGET_MARK=m -CONFIG_NF_TABLES_INET=y -CONFIG_NFT_TPROXY=m -CONFIG_NFT_SOCKET=m -CONFIG_IP_ADVANCED_ROUTER=y -CONFIG_IP_MULTIPLE_TABLES=y -CONFIG_IP_NF_FILTER=m -CONFIG_IP_NF_MANGLE=m -CONFIG_IP_NF_TARGET_REJECT=m -CONFIG_IP6_NF_TARGET_REJECT=m -CONFIG_IPV6_MULTIPLE_TABLES=y -CONFIG_IP6_NF_FILTER=m -CONFIG_NET_ACT_CSUM=m -CONFIG_NET_ACT_PEDIT=m -CONFIG_NET_CLS_ACT=y -CONFIG_NET_CLS_FW=m CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NF_TABLES=m +CONFIG_NF_TABLES_INET=y +CONFIG_NFT_COMPAT=m +CONFIG_NFT_SOCKET=m +CONFIG_NFT_TPROXY=m +CONFIG_SYN_COOKIES=y +CONFIG_VETH=y diff --git a/tools/testing/selftests/net/netfilter/config b/tools/testing/selftests/net/netfilter/config index 305e46b819cb..12ce61fa15a8 100644 --- a/tools/testing/selftests/net/netfilter/config +++ b/tools/testing/selftests/net/netfilter/config @@ -1,77 +1,80 @@ CONFIG_AUDIT=y CONFIG_BPF_SYSCALL=y CONFIG_BRIDGE=m -CONFIG_NETFILTER_XTABLES_LEGACY=y -CONFIG_BRIDGE_NF_EBTABLES_LEGACY=m CONFIG_BRIDGE_EBT_BROUTE=m CONFIG_BRIDGE_EBT_IP=m CONFIG_BRIDGE_EBT_REDIRECT=m CONFIG_BRIDGE_EBT_T_FILTER=m CONFIG_BRIDGE_NETFILTER=m CONFIG_BRIDGE_NF_EBTABLES=m +CONFIG_BRIDGE_NF_EBTABLES_LEGACY=m CONFIG_BRIDGE_VLAN_FILTERING=y CONFIG_CGROUP_BPF=y -CONFIG_DUMMY=m -CONFIG_INET_ESP=m CONFIG_CRYPTO_SHA1=m -CONFIG_IP_NF_MATCH_RPFILTER=m -CONFIG_IP6_NF_MATCH_RPFILTER=m -CONFIG_IP_NF_IPTABLES=m -CONFIG_IP_NF_IPTABLES_LEGACY=m +CONFIG_DUMMY=m +CONFIG_INET_DIAG=m +CONFIG_INET_ESP=m +CONFIG_INET_SCTP_DIAG=m +CONFIG_IP6_NF_FILTER=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_IPTABLES_LEGACY=m -CONFIG_IP_NF_NAT=m -CONFIG_IP_NF_FILTER=m -CONFIG_IP6_NF_FILTER=m -CONFIG_IP_NF_RAW=m +CONFIG_IP6_NF_MATCH_RPFILTER=m CONFIG_IP6_NF_RAW=m +CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_IPTABLES=m +CONFIG_IP_NF_IPTABLES_LEGACY=m +CONFIG_IP_NF_MATCH_RPFILTER=m +CONFIG_IP_NF_NAT=m +CONFIG_IP_NF_RAW=m CONFIG_IP_SCTP=m +CONFIG_IPV6=y +CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_IP_VS=m CONFIG_IP_VS_PROTO_TCP=y CONFIG_IP_VS_RR=m -CONFIG_IPV6=y -CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_MACVLAN=m CONFIG_NAMESPACES=y CONFIG_NET_CLS_U32=m -CONFIG_NET_L3_MASTER_DEV=y -CONFIG_NET_NS=y -CONFIG_NET_SCH_NETEM=m -CONFIG_NET_SCH_HTB=m -CONFIG_NET_IPIP=m -CONFIG_NET_VRF=y CONFIG_NETFILTER=y CONFIG_NETFILTER_ADVANCED=y CONFIG_NETFILTER_NETLINK=m CONFIG_NETFILTER_NETLINK_QUEUE=m CONFIG_NETFILTER_SYNPROXY=m CONFIG_NETFILTER_XTABLES=m -CONFIG_NETFILTER_XT_NAT=m +CONFIG_NETFILTER_XTABLES_LEGACY=y CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m CONFIG_NETFILTER_XT_MATCH_STATE=m CONFIG_NETFILTER_XT_MATCH_STRING=m +CONFIG_NETFILTER_XT_NAT=m CONFIG_NETFILTER_XT_TARGET_REDIRECT=m +CONFIG_NET_IPIP=m +CONFIG_NET_L3_MASTER_DEV=y +CONFIG_NET_NS=y +CONFIG_NET_PKTGEN=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NET_VRF=y CONFIG_NF_CONNTRACK=m -CONFIG_NF_CONNTRACK_PROCFS=y CONFIG_NF_CONNTRACK_EVENTS=y CONFIG_NF_CONNTRACK_FTP=m CONFIG_NF_CONNTRACK_MARK=y +CONFIG_NF_CONNTRACK_PROCFS=y CONFIG_NF_CONNTRACK_ZONES=y CONFIG_NF_CT_NETLINK=m CONFIG_NF_CT_PROTO_SCTP=y CONFIG_NF_FLOW_TABLE=m +CONFIG_NF_FLOW_TABLE_INET=m CONFIG_NF_LOG_IPV4=m CONFIG_NF_LOG_IPV6=m CONFIG_NF_NAT=m -CONFIG_NF_NAT_REDIRECT=y CONFIG_NF_NAT_MASQUERADE=y +CONFIG_NF_NAT_REDIRECT=y CONFIG_NF_TABLES=m CONFIG_NF_TABLES_BRIDGE=m CONFIG_NF_TABLES_INET=y CONFIG_NF_TABLES_IPV4=y CONFIG_NF_TABLES_IPV6=y CONFIG_NF_TABLES_NETDEV=y -CONFIG_NF_FLOW_TABLE_INET=m CONFIG_NFT_BRIDGE_META=m CONFIG_NFT_COMPAT=m CONFIG_NFT_CT=m @@ -90,12 +93,9 @@ CONFIG_NFT_QUOTA=m CONFIG_NFT_REDIR=m CONFIG_NFT_SYNPROXY=m CONFIG_NFT_TPROXY=m +CONFIG_TUN=m CONFIG_VETH=m CONFIG_VLAN_8021Q=m CONFIG_VXLAN=m -CONFIG_XFRM_USER=m CONFIG_XFRM_STATISTICS=y -CONFIG_NET_PKTGEN=m -CONFIG_TUN=m -CONFIG_INET_DIAG=m -CONFIG_INET_SCTP_DIAG=m +CONFIG_XFRM_USER=m diff --git a/tools/testing/selftests/net/ovpn/config b/tools/testing/selftests/net/ovpn/config index 71946ba9fa17..42699740936d 100644 --- a/tools/testing/selftests/net/ovpn/config +++ b/tools/testing/selftests/net/ovpn/config @@ -1,10 +1,10 @@ -CONFIG_NET=y -CONFIG_INET=y -CONFIG_STREAM_PARSER=y -CONFIG_NET_UDP_TUNNEL=y -CONFIG_DST_CACHE=y CONFIG_CRYPTO=y CONFIG_CRYPTO_AES=y -CONFIG_CRYPTO_GCM=y CONFIG_CRYPTO_CHACHA20POLY1305=y +CONFIG_CRYPTO_GCM=y +CONFIG_DST_CACHE=y +CONFIG_INET=y +CONFIG_NET=y +CONFIG_NET_UDP_TUNNEL=y CONFIG_OVPN=m +CONFIG_STREAM_PARSER=y diff --git a/tools/testing/selftests/net/packetdrill/config b/tools/testing/selftests/net/packetdrill/config index 0237ed98f3c0..c4a19a785521 100644 --- a/tools/testing/selftests/net/packetdrill/config +++ b/tools/testing/selftests/net/packetdrill/config @@ -1,6 +1,6 @@ -CONFIG_IPV6=y -CONFIG_HZ_1000=y CONFIG_HZ=1000 +CONFIG_HZ_1000=y +CONFIG_IPV6=y CONFIG_NET_NS=y CONFIG_NET_SCH_FIFO=y CONFIG_NET_SCH_FQ=y diff --git a/tools/testing/selftests/net/tcp_ao/config b/tools/testing/selftests/net/tcp_ao/config index 3605e38711cb..971cb6fa2d63 100644 --- a/tools/testing/selftests/net/tcp_ao/config +++ b/tools/testing/selftests/net/tcp_ao/config @@ -1,8 +1,8 @@ CONFIG_CRYPTO_HMAC=y CONFIG_CRYPTO_RMD160=y CONFIG_CRYPTO_SHA1=y -CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_IPV6=y +CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_NET_L3_MASTER_DEV=y CONFIG_NET_VRF=y CONFIG_TCP_AO=y -- 2.51.0

1 week, 5 days

2
1
0 0

[PATCH net v6] selftest:net:ovpn: Fix uninit return values

by Sidharth Seela

Fix functions that return undefined values. These issues were caught by running clang using LLVM=1 option. Clang warnings are as follows: ovpn-cli.c:1587:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 1587 | if (!sock) { | ^~~~~ ovpn-cli.c:1635:9: note: uninitialized use occurs here 1635 | return ret; | ^~~ ovpn-cli.c:1587:2: note: remove the 'if' if its condition is always false 1587 | if (!sock) { | ^~~~~~~~~~~~ 1588 | fprintf(stderr, "cannot allocate netlink socket\n"); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1589 | goto err_free; | ~~~~~~~~~~~~~~ 1590 | } | ~ ovpn-cli.c:1584:15: note: initialize the variable 'ret' to silence this warning 1584 | int mcid, ret; | ^ | = 0 ovpn-cli.c:2107:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] 2107 | case CMD_INVALID: | ^~~~~~~~~~~ ovpn-cli.c:2111:9: note: uninitialized use occurs here 2111 | return ret; | ^~~ ovpn-cli.c:1939:12: note: initialize the variable 'ret' to silence this warning 1939 | int n, ret; | ^ | Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module") Signed-off-by: Sidharth Seela <sidharthseela(a)gmail.com> --- v6: - Remove stray line near Fixes tag. - Include ovpn prefix in commit message. v5: - Assign -ENOMEM to ret inside if block. - Assign -EINVAL to ret inside case block. v4: - Move changelog below sign-off. - Remove double-hyphens in commit description. v3: - Use prefix net. - Remove so_txtime fix as default case calls error(). - Changelog before sign-off. - Three dashes after sign-off v2: - Use subsystem name "net". - Add fixes tags. - Remove txtimestamp fix as default case calls error. - Assign constant error string instead of NULL. diff --git a/tools/testing/selftests/net/ovpn/ovpn-cli.c b/tools/testing/selftests/net/ovpn/ovpn-cli.c index 9201f2905f2c..8d0f2f61923c 100644 --- a/tools/testing/selftests/net/ovpn/ovpn-cli.c +++ b/tools/testing/selftests/net/ovpn/ovpn-cli.c @@ -1586,6 +1586,7 @@ static int ovpn_listen_mcast(void) sock = nl_socket_alloc(); if (!sock) { fprintf(stderr, "cannot allocate netlink socket\n"); + ret = -ENOMEM; goto err_free; } @@ -2105,6 +2106,7 @@ static int ovpn_run_cmd(struct ovpn_ctx *ovpn) ret = ovpn_listen_mcast(); break; case CMD_INVALID: + ret = -EINVAL; break; } -- 2.47.3

1 week, 5 days

2
1
0 0

[PATCH net] selftests: net: unify the Makefile formats

by Jakub Kicinski

We get a significant number of conflicts between net and net-next because of selftests Makefile changes. People tend to append new test cases at the end of the Makefile when there's no clear sort order. Sort all networking selftests Makefiles, use the following format: VAR_NAME := \ entry1 \ entry2 \ entry3 \ # end of VAR_NAME Some Makefiles are already pretty close to this. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- I think we need to apply this during the merge window, otherwise the conflicts will be crazy. CC: shuah(a)kernel.org CC: jv(a)jvosburgh.net CC: olteanv(a)gmail.com CC: jiri(a)resnulli.us CC: mst(a)redhat.com CC: jasowang(a)redhat.com CC: xuanzhuo(a)linux.alibaba.com CC: eperezma(a)redhat.com CC: kuniyu(a)google.com CC: matttbe(a)kernel.org CC: martineau(a)kernel.org CC: pablo(a)netfilter.org CC: kadlec(a)netfilter.org CC: fw(a)strlen.de CC: antonio(a)openvpn.net CC: allison.henderson(a)oracle.com CC: petrm(a)nvidia.com CC: razor(a)blackwall.org CC: idosch(a)nvidia.com CC: linux-kselftest(a)vger.kernel.org CC: mptcp(a)lists.linux.dev CC: netfilter-devel(a)vger.kernel.org CC: coreteam(a)netfilter.org --- tools/testing/selftests/drivers/net/Makefile | 4 +- .../selftests/drivers/net/bonding/Makefile | 21 +- .../selftests/drivers/net/dsa/Makefile | 9 +- .../testing/selftests/drivers/net/hw/Makefile | 8 +- .../selftests/drivers/net/netdevsim/Makefile | 4 +- .../selftests/drivers/net/team/Makefile | 11 +- .../selftests/drivers/net/virtio_net/Makefile | 13 +- tools/testing/selftests/net/Makefile | 313 +++++++++++------- tools/testing/selftests/net/af_unix/Makefile | 10 +- .../testing/selftests/net/forwarding/Makefile | 58 ++-- tools/testing/selftests/net/hsr/Makefile | 6 +- tools/testing/selftests/net/lib/Makefile | 14 +- tools/testing/selftests/net/mptcp/Makefile | 28 +- .../testing/selftests/net/netfilter/Makefile | 89 ++--- tools/testing/selftests/net/ovpn/Makefile | 12 +- .../selftests/net/packetdrill/Makefile | 10 +- tools/testing/selftests/net/rds/Makefile | 10 +- 17 files changed, 380 insertions(+), 240 deletions(-) diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile index bd3af9a34e2f..6e41635bd55a 100644 --- a/tools/testing/selftests/drivers/net/Makefile +++ b/tools/testing/selftests/drivers/net/Makefile @@ -10,6 +10,7 @@ TEST_GEN_FILES := \ # end of TEST_GEN_FILES TEST_PROGS := \ + hds.py \ napi_id.py \ napi_threaded.py \ netcons_basic.sh \ @@ -21,9 +22,8 @@ TEST_PROGS := \ ping.py \ psp.py \ queues.py \ - stats.py \ shaper.py \ - hds.py \ + stats.py \ xdp.py \ # end of TEST_PROGS diff --git a/tools/testing/selftests/drivers/net/bonding/Makefile b/tools/testing/selftests/drivers/net/bonding/Makefile index 2f095cf67d9a..402d4ee84f2e 100644 --- a/tools/testing/selftests/drivers/net/bonding/Makefile +++ b/tools/testing/selftests/drivers/net/bonding/Makefile @@ -4,24 +4,27 @@ TEST_PROGS := \ bond-arp-interval-causes-panic.sh \ bond-break-lacpdu-tx.sh \ + bond-eth-type-change.sh \ bond-lladdr-target.sh \ + bond_ipsec_offload.sh \ + bond_lacp_prio.sh \ + bond_macvlan_ipvlan.sh \ + bond_options.sh \ + bond_passive_lacp.sh \ dev_addr_lists.sh \ mode-1-recovery-updelay.sh \ mode-2-recovery-updelay.sh \ - bond_options.sh \ - bond-eth-type-change.sh \ - bond_macvlan_ipvlan.sh \ - bond_passive_lacp.sh \ - bond_lacp_prio.sh - bond_ipsec_offload.sh +# end of TEST_PROGS TEST_FILES := \ - lag_lib.sh \ bond_topo_2d1c.sh \ - bond_topo_3d1c.sh + bond_topo_3d1c.sh \ + lag_lib.sh \ +# end of TEST_FILES TEST_INCLUDES := \ + ../../../net/lib.sh \ ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/dsa/Makefile b/tools/testing/selftests/drivers/net/dsa/Makefile index cd6817fe5be6..fd55988e0358 100644 --- a/tools/testing/selftests/drivers/net/dsa/Makefile +++ b/tools/testing/selftests/drivers/net/dsa/Makefile @@ -9,11 +9,13 @@ TEST_PROGS = bridge_locked_port.sh \ local_termination.sh \ no_forwarding.sh \ tc_actions.sh \ - test_bridge_fdb_stress.sh + test_bridge_fdb_stress.sh \ +# end of TEST_PROGS TEST_FILES := \ run_net_forwarding_test.sh \ - forwarding.config + forwarding.config \ +# end of TEST_FILES TEST_INCLUDES := \ ../../../net/forwarding/bridge_locked_port.sh \ @@ -27,6 +29,7 @@ TEST_INCLUDES := \ ../../../net/forwarding/no_forwarding.sh \ ../../../net/forwarding/tc_actions.sh \ ../../../net/forwarding/tc_common.sh \ - ../../../net/lib.sh + ../../../net/lib.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/hw/Makefile b/tools/testing/selftests/drivers/net/hw/Makefile index ee09a40d532c..8133d1a0051c 100644 --- a/tools/testing/selftests/drivers/net/hw/Makefile +++ b/tools/testing/selftests/drivers/net/hw/Makefile @@ -32,8 +32,8 @@ TEST_FILES := \ TEST_INCLUDES := \ $(wildcard lib/py/*.py ../lib/py/*.py) \ ../../../net/lib.sh \ - ../../../net/forwarding/lib.sh \ ../../../net/forwarding/ipip_lib.sh \ + ../../../net/forwarding/lib.sh \ ../../../net/forwarding/tc_common.sh \ # @@ -45,7 +45,11 @@ TEST_GEN_FILES += $(patsubst %.c,%.o,$(wildcard *.bpf.c)) include ../../../lib.mk # YNL build -YNL_GENS := ethtool netdev +YNL_GENS := \ + ethtool \ + netdev \ +# end of YNL_GENS + include ../../../net/ynl.mk include ../../../net/bpf.mk diff --git a/tools/testing/selftests/drivers/net/netdevsim/Makefile b/tools/testing/selftests/drivers/net/netdevsim/Makefile index 07b7c46d3311..daf51113c827 100644 --- a/tools/testing/selftests/drivers/net/netdevsim/Makefile +++ b/tools/testing/selftests/drivers/net/netdevsim/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = devlink.sh \ +TEST_PROGS := \ + devlink.sh \ devlink_in_netns.sh \ devlink_trap.sh \ ethtool-coalesce.sh \ @@ -17,5 +18,6 @@ TEST_PROGS = devlink.sh \ psample.sh \ tc-mq-visibility.sh \ udp_tunnel_nic.sh \ +# end of TEST_PROGS include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/team/Makefile b/tools/testing/selftests/drivers/net/team/Makefile index 89d854c7e674..1340b3df9c31 100644 --- a/tools/testing/selftests/drivers/net/team/Makefile +++ b/tools/testing/selftests/drivers/net/team/Makefile @@ -1,13 +1,18 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for net selftests -TEST_PROGS := dev_addr_lists.sh propagation.sh options.sh +TEST_PROGS := \ + dev_addr_lists.sh \ + options.sh \ + propagation.sh \ +# end of TEST_PROGS TEST_INCLUDES := \ ../bonding/lag_lib.sh \ ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh \ ../../../net/in_netns.sh \ - ../../../net/lib/sh/defer.sh + ../../../net/lib.sh \ + ../../../net/lib/sh/defer.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/drivers/net/virtio_net/Makefile b/tools/testing/selftests/drivers/net/virtio_net/Makefile index 7ec7cd3ab2cc..868ece3fea1f 100644 --- a/tools/testing/selftests/drivers/net/virtio_net/Makefile +++ b/tools/testing/selftests/drivers/net/virtio_net/Makefile @@ -1,15 +1,12 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = basic_features.sh \ - # +TEST_PROGS = basic_features.sh -TEST_FILES = \ - virtio_net_common.sh \ - # +TEST_FILES = virtio_net_common.sh TEST_INCLUDES = \ - ../../../net/forwarding/lib.sh \ - ../../../net/lib.sh \ - # + ../../../net/forwarding/lib.sh \ + ../../../net/lib.sh \ +# end of TEST_INCLUDES include ../../../lib.mk diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 5d9d96515c4a..b5127e968108 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -1,128 +1,201 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for net selftests -CFLAGS += -Wall -Wl,--no-as-needed -O2 -g +CFLAGS += -Wall -Wl,--no-as-needed -O2 -g CFLAGS += -I../../../../usr/include/ $(KHDR_INCLUDES) # Additional include paths needed by kselftest.h CFLAGS += -I../ -TEST_PROGS := run_netsocktests run_afpackettests test_bpf.sh netdevice.sh \ - rtnetlink.sh xfrm_policy.sh -TEST_PROGS += fcnal-ipv4.sh fcnal-ipv6.sh fcnal-other.sh -TEST_PROGS += fib_tests.sh fib-onlink-tests.sh pmtu.sh udpgso.sh ip_defrag.sh -TEST_PROGS += udpgso_bench.sh fib_rule_tests.sh msg_zerocopy.sh psock_snd.sh -TEST_PROGS += udpgro_bench.sh udpgro.sh test_vxlan_under_vrf.sh reuseport_addr_any.sh -TEST_PROGS += test_vxlan_fdb_changelink.sh so_txtime.sh ipv6_flowlabel.sh -TEST_PROGS += tcp_fastopen_backup_key.sh l2tp.sh traceroute.sh -TEST_PROGS += fin_ack_lat.sh fib_nexthop_multiprefix.sh fib_nexthops.sh fib_nexthop_nongw.sh -TEST_PROGS += altnames.sh icmp.sh icmp_redirect.sh ip6_gre_headroom.sh -TEST_PROGS += route_localnet.sh -TEST_PROGS += reuseaddr_ports_exhausted.sh -TEST_PROGS += txtimestamp.sh -TEST_PROGS += vrf-xfrm-tests.sh -TEST_PROGS += rxtimestamp.sh -TEST_PROGS += drop_monitor_tests.sh -TEST_PROGS += vrf_route_leaking.sh -TEST_PROGS += bareudp.sh -TEST_PROGS += amt.sh -TEST_PROGS += unicast_extensions.sh -TEST_PROGS += udpgro_fwd.sh -TEST_PROGS += udpgro_frglist.sh -TEST_PROGS += nat6to4.sh -TEST_PROGS += veth.sh -TEST_PROGS += ioam6.sh -TEST_PROGS += gro.sh -TEST_PROGS += gre_gso.sh -TEST_PROGS += gre_ipv6_lladdr.sh -TEST_PROGS += cmsg_so_mark.sh -TEST_PROGS += cmsg_so_priority.sh -TEST_PROGS += test_so_rcv.sh -TEST_PROGS += cmsg_time.sh cmsg_ip.sh -TEST_PROGS += netns-name.sh -TEST_PROGS += link_netns.py -TEST_PROGS += nl_netdev.py -TEST_PROGS += rtnetlink.py -TEST_PROGS += rtnetlink_notification.sh -TEST_PROGS += srv6_end_dt46_l3vpn_test.sh -TEST_PROGS += srv6_end_dt4_l3vpn_test.sh -TEST_PROGS += srv6_end_dt6_l3vpn_test.sh -TEST_PROGS += srv6_hencap_red_l3vpn_test.sh -TEST_PROGS += srv6_hl2encap_red_l2vpn_test.sh -TEST_PROGS += srv6_end_next_csid_l3vpn_test.sh -TEST_PROGS += srv6_end_x_next_csid_l3vpn_test.sh -TEST_PROGS += srv6_end_flavors_test.sh -TEST_PROGS += srv6_end_dx4_netfilter_test.sh -TEST_PROGS += srv6_end_dx6_netfilter_test.sh -TEST_PROGS += vrf_strict_mode_test.sh -TEST_PROGS += arp_ndisc_evict_nocarrier.sh -TEST_PROGS += ndisc_unsolicited_na_test.sh -TEST_PROGS += arp_ndisc_untracked_subnets.sh -TEST_PROGS += stress_reuseport_listen.sh -TEST_PROGS += l2_tos_ttl_inherit.sh -TEST_PROGS += bind_bhash.sh -TEST_PROGS += ip_local_port_range.sh -TEST_PROGS += rps_default_mask.sh -TEST_PROGS += big_tcp.sh -TEST_PROGS += netns-sysctl.sh -TEST_PROGS += netdev-l2addr.sh -TEST_PROGS_EXTENDED := toeplitz_client.sh toeplitz.sh xfrm_policy_add_speed.sh -TEST_GEN_FILES = socket nettest -TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy reuseport_addr_any -TEST_GEN_FILES += tcp_mmap tcp_inq psock_snd txring_overwrite -TEST_GEN_FILES += udpgso udpgso_bench_tx udpgso_bench_rx ip_defrag -TEST_GEN_FILES += so_txtime ipv6_flowlabel ipv6_flowlabel_mgr so_netns_cookie -TEST_GEN_FILES += tcp_fastopen_backup_key -TEST_GEN_FILES += fin_ack_lat -TEST_GEN_FILES += reuseaddr_ports_exhausted -TEST_GEN_FILES += hwtstamp_config rxtimestamp timestamping txtimestamp -TEST_GEN_FILES += ipsec -TEST_GEN_FILES += ioam6_parser -TEST_GEN_FILES += gro -TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa -TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict tls tun tap epoll_busy_poll -TEST_GEN_FILES += toeplitz -TEST_GEN_FILES += cmsg_sender -TEST_GEN_FILES += stress_reuseport_listen -TEST_GEN_FILES += so_rcv_listener -TEST_PROGS += test_vxlan_vnifiltering.sh -TEST_GEN_FILES += io_uring_zerocopy_tx -TEST_PROGS += io_uring_zerocopy_tx.sh -TEST_GEN_FILES += bind_bhash -TEST_GEN_PROGS += sk_bind_sendto_listen -TEST_GEN_PROGS += sk_connect_zero_addr -TEST_GEN_PROGS += sk_so_peek_off -TEST_PROGS += test_ingress_egress_chaining.sh -TEST_GEN_PROGS += so_incoming_cpu -TEST_PROGS += sctp_vrf.sh -TEST_GEN_FILES += sctp_hello -TEST_GEN_FILES += ip_local_port_range -TEST_GEN_PROGS += bind_wildcard -TEST_GEN_PROGS += bind_timewait -TEST_PROGS += test_vxlan_mdb.sh -TEST_PROGS += test_bridge_neigh_suppress.sh -TEST_PROGS += test_vxlan_nh.sh -TEST_PROGS += test_vxlan_nolocalbypass.sh -TEST_PROGS += test_bridge_backup_port.sh -TEST_PROGS += test_neigh.sh -TEST_PROGS += fdb_flush.sh fdb_notify.sh -TEST_PROGS += fq_band_pktlimit.sh -TEST_PROGS += vlan_hw_filter.sh -TEST_PROGS += vlan_bridge_binding.sh -TEST_PROGS += bpf_offload.py -TEST_PROGS += ipv6_route_update_soft_lockup.sh -TEST_PROGS += busy_poll_test.sh -TEST_GEN_PROGS += proc_net_pktgen -TEST_PROGS += lwt_dst_cache_ref_loop.sh -TEST_PROGS += skf_net_off.sh -TEST_GEN_FILES += skf_net_off -TEST_GEN_FILES += tfo -TEST_PROGS += tfo_passive.sh -TEST_PROGS += broadcast_ether_dst.sh -TEST_PROGS += broadcast_pmtu.sh -TEST_PROGS += ipv6_force_forwarding.sh -TEST_GEN_PROGS += ipv6_fragmentation -TEST_PROGS += route_hint.sh -TEST_GEN_PROGS += tcp_port_share +TEST_PROGS := \ + altnames.sh \ + amt.sh \ + arp_ndisc_evict_nocarrier.sh \ + arp_ndisc_untracked_subnets.sh \ + bareudp.sh \ + big_tcp.sh \ + bind_bhash.sh \ + bpf_offload.py \ + broadcast_ether_dst.sh \ + broadcast_pmtu.sh \ + busy_poll_test.sh \ + cmsg_ip.sh \ + cmsg_so_mark.sh \ + cmsg_so_priority.sh \ + cmsg_time.sh \ + drop_monitor_tests.sh \ + fcnal-ipv4.sh \ + fcnal-ipv6.sh \ + fcnal-other.sh \ + fdb_flush.sh \ + fdb_notify.sh \ + fib-onlink-tests.sh \ + fib_nexthop_multiprefix.sh \ + fib_nexthop_nongw.sh \ + fib_nexthops.sh \ + fib_rule_tests.sh \ + fib_tests.sh \ + fin_ack_lat.sh \ + fq_band_pktlimit.sh \ + gre_gso.sh \ + gre_ipv6_lladdr.sh \ + gro.sh \ + icmp.sh \ + icmp_redirect.sh \ + io_uring_zerocopy_tx.sh \ + ioam6.sh \ + ip6_gre_headroom.sh \ + ip_defrag.sh \ + ip_local_port_range.sh \ + ipv6_flowlabel.sh \ + ipv6_force_forwarding.sh \ + ipv6_route_update_soft_lockup.sh \ + l2_tos_ttl_inherit.sh \ + l2tp.sh \ + link_netns.py \ + lwt_dst_cache_ref_loop.sh \ + msg_zerocopy.sh \ + nat6to4.sh \ + ndisc_unsolicited_na_test.sh \ + netdev-l2addr.sh \ + netdevice.sh \ + netns-name.sh \ + netns-sysctl.sh \ + nl_netdev.py \ + pmtu.sh \ + psock_snd.sh \ + reuseaddr_ports_exhausted.sh \ + reuseport_addr_any.sh \ + route_hint.sh \ + route_localnet.sh \ + rps_default_mask.sh \ + rtnetlink.py \ + rtnetlink.sh \ + rtnetlink_notification.sh \ + run_afpackettests \ + run_netsocktests \ + rxtimestamp.sh \ + sctp_vrf.sh \ + skf_net_off.sh \ + so_txtime.sh \ + srv6_end_dt46_l3vpn_test.sh \ + srv6_end_dt4_l3vpn_test.sh \ + srv6_end_dt6_l3vpn_test.sh \ + srv6_end_dx4_netfilter_test.sh \ + srv6_end_dx6_netfilter_test.sh \ + srv6_end_flavors_test.sh \ + srv6_end_next_csid_l3vpn_test.sh \ + srv6_end_x_next_csid_l3vpn_test.sh \ + srv6_hencap_red_l3vpn_test.sh \ + srv6_hl2encap_red_l2vpn_test.sh \ + stress_reuseport_listen.sh \ + tcp_fastopen_backup_key.sh \ + test_bpf.sh \ + test_bridge_backup_port.sh \ + test_bridge_neigh_suppress.sh \ + test_ingress_egress_chaining.sh \ + test_neigh.sh \ + test_so_rcv.sh \ + test_vxlan_fdb_changelink.sh \ + test_vxlan_mdb.sh \ + test_vxlan_nh.sh \ + test_vxlan_nolocalbypass.sh \ + test_vxlan_under_vrf.sh \ + test_vxlan_vnifiltering.sh \ + tfo_passive.sh \ + traceroute.sh \ + txtimestamp.sh \ + udpgro.sh \ + udpgro_bench.sh \ + udpgro_frglist.sh \ + udpgro_fwd.sh \ + udpgso.sh \ + udpgso_bench.sh \ + unicast_extensions.sh \ + veth.sh \ + vlan_bridge_binding.sh \ + vlan_hw_filter.sh \ + vrf-xfrm-tests.sh \ + vrf_route_leaking.sh \ + vrf_strict_mode_test.sh \ + xfrm_policy.sh \ +# end of TEST_PROGS + +TEST_PROGS_EXTENDED := \ + toeplitz.sh \ + toeplitz_client.sh \ + xfrm_policy_add_speed.sh \ +# end of TEST_PROGS_EXTENDED + +TEST_GEN_FILES := \ + bind_bhash \ + cmsg_sender \ + fin_ack_lat \ + gro \ + hwtstamp_config \ + io_uring_zerocopy_tx \ + ioam6_parser \ + ip_defrag \ + ip_local_port_range \ + ipsec \ + ipv6_flowlabel \ + ipv6_flowlabel_mgr \ + msg_zerocopy \ + nettest \ + psock_fanout \ + psock_snd \ + psock_tpacket \ + reuseaddr_ports_exhausted \ + reuseport_addr_any \ + rxtimestamp \ + sctp_hello \ + skf_net_off \ + so_netns_cookie \ + so_rcv_listener \ + so_txtime \ + socket \ + stress_reuseport_listen \ + tcp_fastopen_backup_key \ + tcp_inq \ + tcp_mmap \ + tfo \ + timestamping \ + toeplitz \ + txring_overwrite \ + txtimestamp \ + udpgso \ + udpgso_bench_rx \ + udpgso_bench_tx \ +# end of TEST_GEN_FILES + +TEST_GEN_PROGS := \ + bind_timewait \ + bind_wildcard \ + epoll_busy_poll \ + ipv6_fragmentation \ + proc_net_pktgen \ + reuseaddr_conflict \ + reuseport_bpf \ + reuseport_bpf_cpu \ + reuseport_bpf_numa \ + reuseport_dualstack \ + sk_bind_sendto_listen \ + sk_connect_zero_addr \ + sk_so_peek_off \ + so_incoming_cpu \ + tap \ + tcp_port_share \ + tls \ + tun \ +# end of TEST_GEN_PROGS + +TEST_FILES := \ + fcnal-test.sh \ + in_netns.sh \ + lib.sh \ + settings \ + setup_loopback.sh \ + setup_veth.sh \ +# end of TEST_FILES # YNL files, must be before "include ..lib.mk" YNL_GEN_FILES := busy_poller @@ -130,10 +203,6 @@ YNL_GEN_PROGS := netlink-dumps TEST_GEN_FILES += $(YNL_GEN_FILES) TEST_GEN_PROGS += $(YNL_GEN_PROGS) -TEST_FILES := settings -TEST_FILES += fcnal-test.sh -TEST_FILES += in_netns.sh lib.sh setup_loopback.sh setup_veth.sh - TEST_GEN_FILES += $(patsubst %.c,%.o,$(wildcard *.bpf.c)) TEST_INCLUDES := forwarding/lib.sh diff --git a/tools/testing/selftests/net/af_unix/Makefile b/tools/testing/selftests/net/af_unix/Makefile index 0a20c98bbcfd..de805cbbdf69 100644 --- a/tools/testing/selftests/net/af_unix/Makefile +++ b/tools/testing/selftests/net/af_unix/Makefile @@ -1,4 +1,12 @@ CFLAGS += $(KHDR_INCLUDES) -Wall -Wflex-array-member-not-at-end -TEST_GEN_PROGS := diag_uid msg_oob scm_inq scm_pidfd scm_rights unix_connect + +TEST_GEN_PROGS := \ + diag_uid \ + msg_oob \ + scm_inq \ + scm_pidfd \ + scm_rights \ + unix_connect \ +# end of TEST_GEN_PROGS include ../../lib.mk diff --git a/tools/testing/selftests/net/forwarding/Makefile b/tools/testing/selftests/net/forwarding/Makefile index e6f482a600da..ff4a00d91a26 100644 --- a/tools/testing/selftests/net/forwarding/Makefile +++ b/tools/testing/selftests/net/forwarding/Makefile @@ -1,11 +1,11 @@ # SPDX-License-Identifier: GPL-2.0+ OR MIT -TEST_PROGS = \ +TEST_PROGS := \ bridge_activity_notify.sh \ bridge_fdb_learning_limit.sh \ + bridge_fdb_local_vlan_0.sh \ bridge_igmp.sh \ bridge_locked_port.sh \ - bridge_fdb_local_vlan_0.sh \ bridge_mdb.sh \ bridge_mdb_host.sh \ bridge_mdb_max.sh \ @@ -21,64 +21,64 @@ TEST_PROGS = \ gre_custom_multipath_hash.sh \ gre_inner_v4_multipath.sh \ gre_inner_v6_multipath.sh \ - gre_multipath_nh_res.sh \ - gre_multipath_nh.sh \ gre_multipath.sh \ + gre_multipath_nh.sh \ + gre_multipath_nh_res.sh \ ip6_forward_instats_vrf.sh \ ip6gre_custom_multipath_hash.sh \ + ip6gre_flat.sh \ ip6gre_flat_key.sh \ ip6gre_flat_keys.sh \ - ip6gre_flat.sh \ + ip6gre_hier.sh \ ip6gre_hier_key.sh \ ip6gre_hier_keys.sh \ - ip6gre_hier.sh \ ip6gre_inner_v4_multipath.sh \ ip6gre_inner_v6_multipath.sh \ + ipip_flat_gre.sh \ ipip_flat_gre_key.sh \ ipip_flat_gre_keys.sh \ - ipip_flat_gre.sh \ + ipip_hier_gre.sh \ ipip_hier_gre_key.sh \ ipip_hier_gre_keys.sh \ - ipip_hier_gre.sh \ lib_sh_test.sh \ local_termination.sh \ min_max_mtu.sh \ + mirror_gre.sh \ mirror_gre_bound.sh \ mirror_gre_bridge_1d.sh \ mirror_gre_bridge_1d_vlan.sh \ - mirror_gre_bridge_1q_lag.sh \ mirror_gre_bridge_1q.sh \ + mirror_gre_bridge_1q_lag.sh \ mirror_gre_changes.sh \ mirror_gre_flower.sh \ mirror_gre_lag_lacp.sh \ mirror_gre_neigh.sh \ mirror_gre_nh.sh \ - mirror_gre.sh \ - mirror_gre_vlan_bridge_1q.sh \ mirror_gre_vlan.sh \ + mirror_gre_vlan_bridge_1q.sh \ mirror_vlan.sh \ no_forwarding.sh \ pedit_dsfield.sh \ pedit_ip.sh \ pedit_l4port.sh \ - q_in_vni_ipv6.sh \ q_in_vni.sh \ + q_in_vni_ipv6.sh \ + router.sh \ router_bridge.sh \ router_bridge_1d.sh \ router_bridge_1d_lag.sh \ router_bridge_lag.sh \ + router_bridge_pvid_vlan_upper.sh \ router_bridge_vlan.sh \ router_bridge_vlan_upper.sh \ - router_bridge_pvid_vlan_upper.sh \ router_bridge_vlan_upper_pvid.sh \ router_broadcast.sh \ - router_mpath_nh_res.sh \ router_mpath_nh.sh \ + router_mpath_nh_res.sh \ router_mpath_seed.sh \ router_multicast.sh \ router_multipath.sh \ router_nh.sh \ - router.sh \ router_vid_1.sh \ sch_ets.sh \ sch_red.sh \ @@ -88,32 +88,34 @@ TEST_PROGS = \ skbedit_priority.sh \ tc_actions.sh \ tc_chains.sh \ - tc_flower_router.sh \ tc_flower.sh \ - tc_flower_l2_miss.sh \ tc_flower_cfm.sh \ + tc_flower_l2_miss.sh \ tc_flower_port_range.sh \ + tc_flower_router.sh \ tc_mpls_l2vpn.sh \ tc_police.sh \ tc_shblocks.sh \ tc_tunnel_key.sh \ tc_vlan_modify.sh \ - vxlan_asymmetric_ipv6.sh \ vxlan_asymmetric.sh \ - vxlan_bridge_1d_ipv6.sh \ - vxlan_bridge_1d_port_8472_ipv6.sh \ - vxlan_bridge_1d_port_8472.sh \ + vxlan_asymmetric_ipv6.sh \ vxlan_bridge_1d.sh \ + vxlan_bridge_1d_ipv6.sh \ + vxlan_bridge_1d_port_8472.sh \ + vxlan_bridge_1d_port_8472_ipv6.sh \ + vxlan_bridge_1q.sh \ vxlan_bridge_1q_ipv6.sh \ vxlan_bridge_1q_mc_ul.sh \ - vxlan_bridge_1q_port_8472_ipv6.sh \ vxlan_bridge_1q_port_8472.sh \ - vxlan_bridge_1q.sh \ + vxlan_bridge_1q_port_8472_ipv6.sh \ vxlan_reserved.sh \ + vxlan_symmetric.sh \ vxlan_symmetric_ipv6.sh \ - vxlan_symmetric.sh +# end of TEST_PROGS -TEST_FILES := devlink_lib.sh \ +TEST_FILES := \ + devlink_lib.sh \ fib_offload_lib.sh \ forwarding.config.sample \ ip6gre_lib.sh \ @@ -128,10 +130,12 @@ TEST_FILES := devlink_lib.sh \ sch_ets_tests.sh \ sch_tbf_core.sh \ sch_tbf_etsprio.sh \ - tc_common.sh + tc_common.sh \ +# end of TEST_FILES TEST_INCLUDES := \ + $(wildcard ../lib/sh/*.sh) \ ../lib.sh \ - $(wildcard ../lib/sh/*.sh) +# end of TEST_INCLUDES include ../../lib.mk diff --git a/tools/testing/selftests/net/hsr/Makefile b/tools/testing/selftests/net/hsr/Makefile index 884cd2cc0681..4b6afc0fe9f8 100644 --- a/tools/testing/selftests/net/hsr/Makefile +++ b/tools/testing/selftests/net/hsr/Makefile @@ -2,7 +2,11 @@ top_srcdir = ../../../../.. -TEST_PROGS := hsr_ping.sh hsr_redbox.sh +TEST_PROGS := \ + hsr_ping.sh \ + hsr_redbox.sh \ +# end of TEST_PROGS + TEST_FILES += hsr_common.sh include ../../lib.mk diff --git a/tools/testing/selftests/net/lib/Makefile b/tools/testing/selftests/net/lib/Makefile index 88c4bc461459..ce795bc0a1af 100644 --- a/tools/testing/selftests/net/lib/Makefile +++ b/tools/testing/selftests/net/lib/Makefile @@ -5,12 +5,16 @@ CFLAGS += -I../../../../../usr/include/ $(KHDR_INCLUDES) # Additional include paths needed by kselftest.h CFLAGS += -I../../ -TEST_FILES := ../../../../../Documentation/netlink/specs -TEST_FILES += ../../../../net/ynl +TEST_FILES := \ + ../../../../net/ynl \ + ../../../../../Documentation/netlink/specs \ +# end of TEST_FILES -TEST_GEN_FILES += csum -TEST_GEN_FILES += $(patsubst %.c,%.o,$(wildcard *.bpf.c)) -TEST_GEN_FILES += xdp_helper +TEST_GEN_FILES := \ + $(patsubst %.c,%.o,$(wildcard *.bpf.c)) \ + csum \ + xdp_helper \ +# end of TEST_GEN_FILES TEST_INCLUDES := $(wildcard py/*.py sh/*.sh) diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile index 4c7e51336ab2..e3a8dbdc71cd 100644 --- a/tools/testing/selftests/net/mptcp/Makefile +++ b/tools/testing/selftests/net/mptcp/Makefile @@ -4,13 +4,31 @@ top_srcdir = ../../../../.. CFLAGS += -Wall -Wl,--no-as-needed -O2 -g -I$(top_srcdir)/usr/include $(KHDR_INCLUDES) -TEST_PROGS := mptcp_connect.sh mptcp_connect_mmap.sh mptcp_connect_sendfile.sh \ - mptcp_connect_checksum.sh pm_netlink.sh mptcp_join.sh diag.sh \ - simult_flows.sh mptcp_sockopt.sh userspace_pm.sh +TEST_PROGS := \ + mptcp_connect.sh \ + mptcp_connect_mmap.sh \ + mptcp_connect_sendfile.sh \ + mptcp_connect_checksum.sh \ + pm_netlink.sh \ + mptcp_join.sh \ + diag.sh \ + simult_flows.sh \ + mptcp_sockopt.sh \ + userspace_pm.sh \ +# end of TEST_GEN_FILES -TEST_GEN_FILES = mptcp_connect pm_nl_ctl mptcp_sockopt mptcp_inq mptcp_diag +TEST_GEN_FILES := \ + mptcp_connect \ + mptcp_diag \ + mptcp_inq \ + mptcp_sockopt \ + pm_nl_ctl \ +# end of TEST_GEN_FILES -TEST_FILES := mptcp_lib.sh settings +TEST_FILES := \ + mptcp_lib.sh \ + settings \ +# end of TEST_FILES TEST_INCLUDES := ../lib.sh $(wildcard ../lib/sh/*.sh) diff --git a/tools/testing/selftests/net/netfilter/Makefile b/tools/testing/selftests/net/netfilter/Makefile index a98ed892f55f..ee2d1a5254f8 100644 --- a/tools/testing/selftests/net/netfilter/Makefile +++ b/tools/testing/selftests/net/netfilter/Makefile @@ -6,46 +6,52 @@ HOSTPKG_CONFIG := pkg-config MNL_CFLAGS := $(shell $(HOSTPKG_CONFIG) --cflags libmnl 2>/dev/null) MNL_LDLIBS := $(shell $(HOSTPKG_CONFIG) --libs libmnl 2>/dev/null || echo -lmnl) -TEST_PROGS := br_netfilter.sh bridge_brouter.sh -TEST_PROGS += br_netfilter_queue.sh -TEST_PROGS += conntrack_dump_flush.sh -TEST_PROGS += conntrack_icmp_related.sh -TEST_PROGS += conntrack_ipip_mtu.sh -TEST_PROGS += conntrack_tcp_unreplied.sh -TEST_PROGS += conntrack_resize.sh -TEST_PROGS += conntrack_sctp_collision.sh -TEST_PROGS += conntrack_vrf.sh -TEST_PROGS += conntrack_clash.sh -TEST_PROGS += conntrack_reverse_clash.sh -TEST_PROGS += ipvs.sh -TEST_PROGS += nf_conntrack_packetdrill.sh -TEST_PROGS += nf_nat_edemux.sh -TEST_PROGS += nft_audit.sh -TEST_PROGS += nft_concat_range.sh -TEST_PROGS += nft_conntrack_helper.sh -TEST_PROGS += nft_fib.sh -TEST_PROGS += nft_flowtable.sh -TEST_PROGS += nft_interface_stress.sh -TEST_PROGS += nft_meta.sh -TEST_PROGS += nft_nat.sh -TEST_PROGS += nft_nat_zones.sh -TEST_PROGS += nft_queue.sh -TEST_PROGS += nft_synproxy.sh -TEST_PROGS += nft_tproxy_tcp.sh -TEST_PROGS += nft_tproxy_udp.sh -TEST_PROGS += nft_zones_many.sh -TEST_PROGS += rpath.sh -TEST_PROGS += vxlan_mtu_frag.sh -TEST_PROGS += xt_string.sh +TEST_PROGS := \ + br_netfilter.sh \ + br_netfilter_queue.sh \ + bridge_brouter.sh \ + conntrack_clash.sh \ + conntrack_dump_flush.sh \ + conntrack_icmp_related.sh \ + conntrack_ipip_mtu.sh \ + conntrack_resize.sh \ + conntrack_reverse_clash.sh \ + conntrack_sctp_collision.sh \ + conntrack_tcp_unreplied.sh \ + conntrack_vrf.sh \ + ipvs.sh \ + nf_conntrack_packetdrill.sh \ + nf_nat_edemux.sh \ + nft_audit.sh \ + nft_concat_range.sh \ + nft_conntrack_helper.sh \ + nft_fib.sh \ + nft_flowtable.sh \ + nft_interface_stress.sh \ + nft_meta.sh \ + nft_nat.sh \ + nft_nat_zones.sh \ + nft_queue.sh \ + nft_synproxy.sh \ + nft_tproxy_tcp.sh \ + nft_tproxy_udp.sh \ + nft_zones_many.sh \ + rpath.sh \ + vxlan_mtu_frag.sh \ + xt_string.sh \ +# end of TEST_PROGS TEST_PROGS_EXTENDED = nft_concat_range_perf.sh -TEST_GEN_FILES = audit_logread -TEST_GEN_FILES += connect_close nf_queue -TEST_GEN_FILES += conntrack_dump_flush -TEST_GEN_FILES += conntrack_reverse_clash -TEST_GEN_FILES += sctp_collision -TEST_GEN_FILES += udpclash +TEST_GEN_FILES = \ + audit_logread \ + connect_close \ + conntrack_dump_flush \ + conntrack_reverse_clash \ + nf_queue \ + sctp_collision \ + udpclash \ +# end of TEST_GEN_FILES include ../../lib.mk @@ -56,9 +62,12 @@ $(OUTPUT)/conntrack_dump_flush: CFLAGS += $(MNL_CFLAGS) $(OUTPUT)/conntrack_dump_flush: LDLIBS += $(MNL_LDLIBS) $(OUTPUT)/udpclash: LDLIBS += -lpthread -TEST_FILES := lib.sh -TEST_FILES += packetdrill +TEST_FILES := \ + lib.sh \ + packetdrill \ +# end of TEST_FILES TEST_INCLUDES := \ + $(wildcard ../lib/sh/*.sh) \ ../lib.sh \ - $(wildcard ../lib/sh/*.sh) +# end of TEST_INCLUDES diff --git a/tools/testing/selftests/net/ovpn/Makefile b/tools/testing/selftests/net/ovpn/Makefile index e0926d76b4c8..dbe0388c8512 100644 --- a/tools/testing/selftests/net/ovpn/Makefile +++ b/tools/testing/selftests/net/ovpn/Makefile @@ -19,13 +19,15 @@ LDLIBS += $(VAR_LDLIBS) TEST_FILES = common.sh -TEST_PROGS = test.sh \ - test-large-mtu.sh \ +TEST_PROGS := \ test-chachapoly.sh \ - test-tcp.sh \ - test-float.sh \ + test-close-socket-tcp.sh \ test-close-socket.sh \ - test-close-socket-tcp.sh + test-float.sh \ + test-large-mtu.sh \ + test-tcp.sh \ + test.sh \ +# end of TEST_PROGS TEST_GEN_FILES := ovpn-cli diff --git a/tools/testing/selftests/net/packetdrill/Makefile b/tools/testing/selftests/net/packetdrill/Makefile index 31cfb666ba8b..ff54641493e9 100644 --- a/tools/testing/selftests/net/packetdrill/Makefile +++ b/tools/testing/selftests/net/packetdrill/Makefile @@ -1,9 +1,11 @@ # SPDX-License-Identifier: GPL-2.0 -TEST_INCLUDES := ksft_runner.sh \ - defaults.sh \ - set_sysctls.py \ - ../../kselftest/ktap_helpers.sh +TEST_INCLUDES := \ + defaults.sh \ + ksft_runner.sh \ + set_sysctls.py \ + ../../kselftest/ktap_helpers.sh \ +# end of TEST_INCLUDES TEST_PROGS := $(wildcard *.pkt) diff --git a/tools/testing/selftests/net/rds/Makefile b/tools/testing/selftests/net/rds/Makefile index 612a7219990e..762845cc973c 100644 --- a/tools/testing/selftests/net/rds/Makefile +++ b/tools/testing/selftests/net/rds/Makefile @@ -5,8 +5,14 @@ TEST_PROGS := run.sh -TEST_FILES := include.sh test.py +TEST_FILES := \ + include.sh \ + test.py \ +# end of TEST_FILES -EXTRA_CLEAN := /tmp/rds_logs include.sh +EXTRA_CLEAN := \ + include.sh \ + /tmp/rds_logs \ +# end of EXTRA_CLEAN include ../../lib.mk -- 2.51.0

1 week, 5 days

6
7
0 0

[RESEND PATCH] selftests/filesystems: Fix build warning on anon_inode_test

by Ranganath V N

clang warning null passed where non-null argument is expected. anon_inode_test.c:45:19: warning: argument 3 null where non-null expected [-Wnonnull] 45 | ASSERT_LT(execveat(fd_context, "", NULL, NULL, AT_EMPTY_PATH), 0); | ^~~~~~~~ Signed-off-by: Ranganath V N <vnranganath.20(a)gmail.com> --- Adding missed mainters to the patch tools/testing/selftests/filesystems/anon_inode_test.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/filesystems/anon_inode_test.c b/tools/testing/selftests/filesystems/anon_inode_test.c index 73e0a4d4fb2f..f796dad679db 100644 --- a/tools/testing/selftests/filesystems/anon_inode_test.c +++ b/tools/testing/selftests/filesystems/anon_inode_test.c @@ -38,11 +38,13 @@ TEST(anon_inode_no_chmod) TEST(anon_inode_no_exec) { int fd_context; + static char *argv[] = { NULL }; + static char *envp[] = { NULL }; fd_context = sys_fsopen("tmpfs", 0); ASSERT_GE(fd_context, 0); - ASSERT_LT(execveat(fd_context, "", NULL, NULL, AT_EMPTY_PATH), 0); + ASSERT_LT(execveat(fd_context, "", argv, envp, AT_EMPTY_PATH), 0); ASSERT_EQ(errno, EACCES); EXPECT_EQ(close(fd_context), 0); -- 2.43.0

1 week, 6 days

1
1
0 0

[PATCH RESEND] selftests/cachestat: add tmpshmcstat file to .gitignore

by Madhur Kumar

Add the tmpshmcstat file to .gitignore to avoid accidentally staging the build artifact Signed-off-by: Madhur Kumar <madhurkumar004(a)gmail.com> --- tools/testing/selftests/cachestat/.gitignore | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/cachestat/.gitignore b/tools/testing/selftests/cachestat/.gitignore index d6c30b43a4bb..abbb13b6e96b 100644 --- a/tools/testing/selftests/cachestat/.gitignore +++ b/tools/testing/selftests/cachestat/.gitignore @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0-only test_cachestat +tmpshmcstat -- 2.51.0

2 weeks

1
0
0 0

[PATCH net 9/9] selftests: drv-net: pp_alloc_fail: add necessary optoins to config

by Jakub Kicinski

Add kernel config for error injection as needed by pp_alloc_fail.py Fixes: 9da271f825e4 ("selftests: drv-net-hw: add test for memory allocation failures with page pool") Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: joe(a)dama.to CC: willemb(a)google.com CC: sdf(a)fomichev.me CC: almasrymina(a)google.com CC: linux-kselftest(a)vger.kernel.org --- tools/testing/selftests/drivers/net/hw/config | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/drivers/net/hw/config b/tools/testing/selftests/drivers/net/hw/config index e8a06aa1471c..2307aa001be1 100644 --- a/tools/testing/selftests/drivers/net/hw/config +++ b/tools/testing/selftests/drivers/net/hw/config @@ -1,3 +1,7 @@ +CONFIG_FAIL_FUNCTION=y +CONFIG_FAULT_INJECTION=y +CONFIG_FAULT_INJECTION_DEBUG_FS=y +CONFIG_FUNCTION_ERROR_INJECTION=y CONFIG_IO_URING=y CONFIG_IPV6=y CONFIG_IPV6_GRE=y -- 2.51.0

2 weeks

2
1
0 0

[PATCH net 7/9] selftests: drv-net: fix linter warnings in pp_alloc_fail

by Jakub Kicinski

Fix linter warnings, it's a bit hard to check for new ones otherwise. W0311: Bad indentation. Found 16 spaces, expected 12 (bad-indentation) C0114: Missing module docstring (missing-module-docstring) W1514: Using open without explicitly specifying an encoding (unspecified-encoding) C0116: Missing function or method docstring (missing-function-docstring) Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: johndale(a)cisco.com CC: linux-kselftest(a)vger.kernel.org --- .../selftests/drivers/net/hw/pp_alloc_fail.py | 20 +++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py index ad192fef3117..fc66b7a7b149 100755 --- a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py +++ b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py @@ -1,6 +1,10 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 +""" +Test driver resilience vs page pool allocation failures. +""" + import errno import time import os @@ -13,7 +17,8 @@ from lib.py import cmd, tool, GenerateTraffic def _write_fail_config(config): for key, value in config.items(): - with open("/sys/kernel/debug/fail_function/" + key, "w") as fp: + path = "/sys/kernel/debug/fail_function/" + with open(path + key, "w", encoding='ascii') as fp: fp.write(str(value) + "\n") @@ -22,8 +27,7 @@ from lib.py import cmd, tool, GenerateTraffic raise KsftSkipEx("Kernel built without function error injection (or DebugFS)") if not os.path.exists("/sys/kernel/debug/fail_function/page_pool_alloc_netmems"): - with open("/sys/kernel/debug/fail_function/inject", "w") as fp: - fp.write("page_pool_alloc_netmems\n") + _write_fail_config({"inject": "page_pool_alloc_netmems"}) _write_fail_config({ "verbose": 0, @@ -38,8 +42,7 @@ from lib.py import cmd, tool, GenerateTraffic return if os.path.exists("/sys/kernel/debug/fail_function/page_pool_alloc_netmems"): - with open("/sys/kernel/debug/fail_function/inject", "w") as fp: - fp.write("\n") + _write_fail_config({"inject": ""}) _write_fail_config({ "probability": 0, @@ -48,6 +51,10 @@ from lib.py import cmd, tool, GenerateTraffic def test_pp_alloc(cfg, netdevnl): + """ + Configure page pool allocation fail injection while traffic is running. + """ + def get_stats(): return netdevnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] @@ -105,7 +112,7 @@ from lib.py import cmd, tool, GenerateTraffic else: ksft_pr("ethtool -G change retval: did not succeed", new_g) else: - ksft_pr("ethtool -G change retval: did not try") + ksft_pr("ethtool -G change retval: did not try") time.sleep(0.1) check_traffic_flowing() @@ -119,6 +126,7 @@ from lib.py import cmd, tool, GenerateTraffic def main() -> None: + """ Ksft boiler plate main """ netdevnl = NetdevFamily() with NetDrvEpEnv(__file__, nsim_test=False) as cfg: -- 2.51.0

2 weeks

2
1
0 0

[PATCH net 5/9] selftests: drv-net: xdp: add test for interface level qstats

by Jakub Kicinski

Send a non-trivial number of packets and make sure that they are counted correctly in qstats. Per qstats specification XDP is the first layer of the stack so we should see Rx and Tx counters go up for packets which went thru XDP. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: sdf(a)fomichev.me CC: linux-kselftest(a)vger.kernel.org CC: bpf(a)vger.kernel.org --- tools/testing/selftests/drivers/net/xdp.py | 91 +++++++++++++++++++++- 1 file changed, 89 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/drivers/net/xdp.py b/tools/testing/selftests/drivers/net/xdp.py index a7a4d97aa228..a148004e1c36 100755 --- a/tools/testing/selftests/drivers/net/xdp.py +++ b/tools/testing/selftests/drivers/net/xdp.py @@ -11,8 +11,9 @@ import string from dataclasses import dataclass from enum import Enum -from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_ne, ksft_pr -from lib.py import KsftFailEx, NetDrvEpEnv, EthtoolFamily, NlError +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_ge, ksft_ne, ksft_pr +from lib.py import KsftFailEx, NetDrvEpEnv +from lib.py import EthtoolFamily, NetdevFamily, NlError from lib.py import bkg, cmd, rand_port, wait_port_listen from lib.py import ip, bpftool, defer @@ -671,6 +672,88 @@ from lib.py import ip, bpftool, defer _validate_res(res, offset_lst, pkt_sz_lst) +def _test_xdp_native_ifc_stats(cfg, act): + cfg.require_cmd("socat") + + bpf_info = BPFProgInfo("xdp_prog", "xdp_native.bpf.o", "xdp", 1500) + prog_info = _load_xdp_prog(cfg, bpf_info) + port = rand_port() + + _set_xdp_map("map_xdp_setup", TestConfig.MODE.value, act.value) + _set_xdp_map("map_xdp_setup", TestConfig.PORT.value, port) + + # Discard the input, but we need a listener to avoid ICMP errors + rx_udp = f"socat -{cfg.addr_ipver} -T 2 -u UDP-RECV:{port},reuseport " + \ + "/dev/null" + # Listener runs on "remote" in case of XDP_TX + rx_host = cfg.remote if act == XDPAction.TX else None + # We want to spew 2000 packets quickly, bash seems to do a good enough job + tx_udp = f"exec 5<>/dev/udp/{cfg.addr}/{port}; " \ + "for i in `seq 2000`; do echo a >&5; done; exec 5>&-" + + cfg.wait_hw_stats_settle() + # Qstats have more clearly defined semantics than rtnetlink. + # XDP is the "first layer of the stack" so XDP packets should be counted + # as received and sent as if the decision was made in the routing layer. + before = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + with bkg(rx_udp, host=rx_host, exit_wait=True): + wait_port_listen(port, proto="udp", host=rx_host) + cmd(tx_udp, host=cfg.remote, shell=True) + + cfg.wait_hw_stats_settle() + after = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + ksft_ge(after['rx-packets'] - before['rx-packets'], 2000) + if act == XDPAction.TX: + ksft_ge(after['tx-packets'] - before['tx-packets'], 2000) + + expected_pkts = 2000 + stats = _get_stats(prog_info["maps"]["map_xdp_stats"]) + ksft_eq(stats[XDPStats.RX.value], expected_pkts, "XDP RX stats mismatch") + if act == XDPAction.TX: + ksft_eq(stats[XDPStats.TX.value], expected_pkts, "XDP TX stats mismatch") + + # Flip the ring count back and forth to make sure the stats from XDP rings + # don't get lost. + chans = cfg.ethnl.channels_get({'header': {'dev-index': cfg.ifindex}}) + if chans.get('combined-count', 0) > 1: + cfg.ethnl.channels_set({'header': {'dev-index': cfg.ifindex}, + 'combined-count': 1}) + cfg.ethnl.channels_set({'header': {'dev-index': cfg.ifindex}, + 'combined-count': chans['combined-count']}) + before = after + after = cfg.netnl.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + + ksft_ge(after['rx-packets'], before['rx-packets']) + if act == XDPAction.TX: + ksft_ge(after['tx-packets'], before['tx-packets']) + + +def test_xdp_native_qstats_pass(cfg): + """ + Send 2000 messages, expect XDP_PASS, make sure the packets were counted + to interface level qstats (Rx). + """ + _test_xdp_native_ifc_stats(cfg, XDPAction.PASS) + + +def test_xdp_native_qstats_drop(cfg): + """ + Send 2000 messages, expect XDP_DROP, make sure the packets were counted + to interface level qstats (Rx). + """ + _test_xdp_native_ifc_stats(cfg, XDPAction.DROP) + + +def test_xdp_native_qstats_tx(cfg): + """ + Send 2000 messages, expect XDP_TX, make sure the packets were counted + to interface level qstats (Rx and Tx) + """ + _test_xdp_native_ifc_stats(cfg, XDPAction.TX) + + def main(): """ Main function to execute the XDP tests. @@ -682,6 +765,7 @@ from lib.py import ip, bpftool, defer """ with NetDrvEpEnv(__file__) as cfg: cfg.ethnl = EthtoolFamily() + cfg.netnl = NetdevFamily() ksft_run( [ test_xdp_native_pass_sb, @@ -694,6 +778,9 @@ from lib.py import ip, bpftool, defer test_xdp_native_adjst_tail_shrnk_data, test_xdp_native_adjst_head_grow_data, test_xdp_native_adjst_head_shrnk_data, + test_xdp_native_qstats_pass, + test_xdp_native_qstats_drop, + test_xdp_native_qstats_tx, ], args=(cfg,)) ksft_exit() -- 2.51.0

2 weeks

2
1
0 0

[PATCH net 4/9] selftests: drv-net: xdp: rename netnl to ethnl

by Jakub Kicinski

Test uses "netnl" for the ethtool family which is quite confusing (one would expect netdev family would use this name). No functional changes. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: sdf(a)fomichev.me CC: linux-kselftest(a)vger.kernel.org CC: bpf(a)vger.kernel.org --- tools/testing/selftests/drivers/net/xdp.py | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/drivers/net/xdp.py b/tools/testing/selftests/drivers/net/xdp.py index 08fea4230759..a7a4d97aa228 100755 --- a/tools/testing/selftests/drivers/net/xdp.py +++ b/tools/testing/selftests/drivers/net/xdp.py @@ -541,11 +541,11 @@ from lib.py import ip, bpftool, defer The HDS threshold value. If the threshold is not supported or an error occurs, a default value of 1500 is returned. """ - netnl = cfg.netnl + ethnl = cfg.ethnl hds_thresh = 1500 try: - rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}}) + rings = ethnl.rings_get({'header': {'dev-index': cfg.ifindex}}) if 'hds-thresh' not in rings: ksft_pr(f'hds-thresh not supported. Using default: {hds_thresh}') return hds_thresh @@ -562,7 +562,7 @@ from lib.py import ip, bpftool, defer Args: cfg: Configuration object containing network settings. - netnl: Network namespace or link object (not used in this function). + ethnl: Network namespace or link object (not used in this function). This function sets up the packet size and offset lists, then performs the head adjustment test by sending and receiving UDP packets. @@ -681,7 +681,7 @@ from lib.py import ip, bpftool, defer function to execute the tests. """ with NetDrvEpEnv(__file__) as cfg: - cfg.netnl = EthtoolFamily() + cfg.ethnl = EthtoolFamily() ksft_run( [ test_xdp_native_pass_sb, -- 2.51.0

2 weeks

2
1
0 0

[PATCH net 8/9] selftests: drv-net: pp_alloc_fail: lower traffic expectations

by Jakub Kicinski

Lower the expected level of traffic in the pp_alloc_fail test and calculate failure counter thresholds based on the traffic rather than using a fixed constant. We only have "QEMU HW" in NIPA right now, and the test (due to debug dependencies) only works on debug kernels in the first place. We need some place for it to pass otherwise it seems to be bit rotting. So lower the traffic threshold so that it passes on QEMU and with a debug kernel... Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: johndale(a)cisco.com CC: linux-kselftest(a)vger.kernel.org --- .../selftests/drivers/net/hw/pp_alloc_fail.py | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py index fc66b7a7b149..a4521a912d61 100755 --- a/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py +++ b/tools/testing/selftests/drivers/net/hw/pp_alloc_fail.py @@ -7,6 +7,7 @@ Test driver resilience vs page pool allocation failures. import errno import time +import math import os from lib.py import ksft_run, ksft_exit, ksft_pr from lib.py import KsftSkipEx, KsftFailEx @@ -62,7 +63,7 @@ from lib.py import cmd, tool, GenerateTraffic stat1 = get_stats() time.sleep(1) stat2 = get_stats() - if stat2['rx-packets'] - stat1['rx-packets'] < 15000: + if stat2['rx-packets'] - stat1['rx-packets'] < 4000: raise KsftFailEx("Traffic seems low:", stat2['rx-packets'] - stat1['rx-packets']) @@ -91,9 +92,14 @@ from lib.py import cmd, tool, GenerateTraffic if s2['rx-alloc-fail'] - s1['rx-alloc-fail'] < 1: raise KsftSkipEx("Allocation failures not increasing") - if s2['rx-alloc-fail'] - s1['rx-alloc-fail'] < 100: - raise KsftSkipEx("Allocation increasing too slowly", s2['rx-alloc-fail'] - s1['rx-alloc-fail'], - "packets:", s2['rx-packets'] - s1['rx-packets']) + pkts = s2['rx-packets'] - s1['rx-packets'] + # Expecting one failure per 512 buffers, 3.1x safety margin + want_fails = math.floor(pkts / 512 / 3.1) + seen_fails = s2['rx-alloc-fail'] - s1['rx-alloc-fail'] + if s2['rx-alloc-fail'] - s1['rx-alloc-fail'] < want_fails: + raise KsftSkipEx("Allocation increasing too slowly", seen_fails, + "packets:", pkts) + ksft_pr(f"Seen: pkts:{pkts} fails:{seen_fails} (pass thrs:{want_fails})") # Basic failures are fine, try to wobble some settings to catch extra failures check_traffic_flowing() -- 2.51.0

2 weeks

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[PATCH bpf-next] bpf_doc: Support 1st const parameter of bpf_d_path()

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Since commit 1b8abbb12128 ("bpf...d_path(): constify path argument"), the first parameter of the bpf_d_path() has been changed to a const constant. We need to modify the header file and bpf_doc.py. The two error messages are as follows: linux/tools/testing/selftests/bpf$ make CLNG-BPF [test_progs] bpf_iter_task_vmas.bpf.o progs/bpf_iter_task_vmas.c:52:14: error: passing 'const struct path *' to parameter of type 'struct path *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 52 | bpf_d_path(&file->f_path, d_path_buf, D_PATH_BUF_SIZE); | ^~~~~~~~~~~~~ 1 error generated. .... progs/verifier_vfs_accept.c:80:7: error: assigning to 'struct path *' from 'const struct path *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 80 | path = &file->f_path; | ^ ~~~~~~~~~~~~~ 1 error generated. Fixes: 1b8abbb12128 ("bpf...d_path(): constify path argument") Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- include/uapi/linux/bpf.h | 2 +- scripts/bpf_doc.py | 1 + tools/include/uapi/linux/bpf.h | 2 +- tools/testing/selftests/bpf/progs/verifier_vfs_accept.c | 2 +- 4 files changed, 4 insertions(+), 3 deletions(-) diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index ae83d8649ef1..6829936d33f5 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -4891,7 +4891,7 @@ union bpf_attr { * * **-ENOENT** if the bpf_local_storage cannot be found. * - * long bpf_d_path(struct path *path, char *buf, u32 sz) + * long bpf_d_path(const struct path *path, char *buf, u32 sz) * Description * Return full path for given **struct path** object, which * needs to be the kernel BTF *path* object. The path is diff --git a/scripts/bpf_doc.py b/scripts/bpf_doc.py index c77dc40f7689..15d113a1bc1d 100755 --- a/scripts/bpf_doc.py +++ b/scripts/bpf_doc.py @@ -788,6 +788,7 @@ class PrinterHelpersHeader(Printer): 'struct task_struct', 'struct cgroup', 'struct path', + 'const struct path', 'struct btf_ptr', 'struct inode', 'struct socket', diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index ae83d8649ef1..6829936d33f5 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -4891,7 +4891,7 @@ union bpf_attr { * * **-ENOENT** if the bpf_local_storage cannot be found. * - * long bpf_d_path(struct path *path, char *buf, u32 sz) + * long bpf_d_path(const struct path *path, char *buf, u32 sz) * Description * Return full path for given **struct path** object, which * needs to be the kernel BTF *path* object. The path is diff --git a/tools/testing/selftests/bpf/progs/verifier_vfs_accept.c b/tools/testing/selftests/bpf/progs/verifier_vfs_accept.c index 3e2d76ee8050..55398c04290a 100644 --- a/tools/testing/selftests/bpf/progs/verifier_vfs_accept.c +++ b/tools/testing/selftests/bpf/progs/verifier_vfs_accept.c @@ -70,7 +70,7 @@ __success int BPF_PROG(path_d_path_from_file_argument, struct file *file) { int ret; - struct path *path; + const struct path *path; /* The f_path member is a path which is embedded directly within a * file. Therefore, a pointer to such embedded members are still -- 2.51.0

2 weeks

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[PATCH bpf-next v2 0/2] Add kfuncs bpf_strcasestr and bpf_strncasestr

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Add kfuncs bpf_strcasestr and bpf_strncasestr, which are extensions of bpf_strstr and bpf_strnstr, suitable for more scenarios. Rong Tao (2): bpf: add bpf_strcasestr,bpf_strncasestr kfuncs selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs kernel/bpf/helpers.c | 96 +++++++++++++++---- .../selftests/bpf/prog_tests/string_kfuncs.c | 2 + .../bpf/progs/string_kfuncs_failure1.c | 12 +++ .../bpf/progs/string_kfuncs_failure2.c | 2 + .../bpf/progs/string_kfuncs_success.c | 13 +++ 5 files changed, 104 insertions(+), 21 deletions(-) -- v2: remove extra __bpf_kfunc and fix comment of bpf_strncasestr(). v1: https://lore.kernel.org/all/tencent_8AF4D15B4475031E2185ACDE4B1495995707@qq… -- 2.51.0

2 weeks

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[PATCH bpf-next 1/2] bpf: add bpf_strcasestr,bpf_strncasestr kfuncs

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> bpf_strcasestr() and bpf_strncasestr() functions perform same like bpf_strstr() and bpf_strnstr() except ignoring the case of the characters. Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- kernel/bpf/helpers.c | 96 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 75 insertions(+), 21 deletions(-) diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index c9fab9a356df..c4a0070d1c71 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -3675,34 +3675,21 @@ __bpf_kfunc int bpf_strcspn(const char *s__ign, const char *reject__ign) return -EFAULT; } -/** - * bpf_strnstr - Find the first substring in a length-limited string - * @s1__ign: The string to be searched - * @s2__ign: The string to search for - * @len: the maximum number of characters to search - * - * Return: - * * >=0 - Index of the first character of the first occurrence of @s2__ign - * within the first @len characters of @s1__ign - * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign - * * %-EFAULT - Cannot read one of the strings - * * %-E2BIG - One of the strings is too large - * * %-ERANGE - One of the strings is outside of kernel address space - */ -__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len) +__bpf_kfunc int __bpf_strnstr(const char *s1, const char *s2, size_t len, + bool ignore_case) { char c1, c2; int i, j; - if (!copy_from_kernel_nofault_allowed(s1__ign, 1) || - !copy_from_kernel_nofault_allowed(s2__ign, 1)) { + if (!copy_from_kernel_nofault_allowed(s1, 1) || + !copy_from_kernel_nofault_allowed(s2, 1)) { return -ERANGE; } guard(pagefault)(); for (i = 0; i < XATTR_SIZE_MAX; i++) { for (j = 0; i + j <= len && j < XATTR_SIZE_MAX; j++) { - __get_kernel_nofault(&c2, s2__ign + j, char, err_out); + __get_kernel_nofault(&c2, s2 + j, char, err_out); if (c2 == '\0') return i; /* @@ -3712,7 +3699,13 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len */ if (i + j == len) break; - __get_kernel_nofault(&c1, s1__ign + j, char, err_out); + __get_kernel_nofault(&c1, s1 + j, char, err_out); + + if (ignore_case) { + c1 = tolower(c1); + c2 = tolower(c2); + } + if (c1 == '\0') return -ENOENT; if (c1 != c2) @@ -3722,7 +3715,7 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len return -E2BIG; if (i + j == len) return -ENOENT; - s1__ign++; + s1++; } return -E2BIG; err_out: @@ -3744,8 +3737,67 @@ __bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len */ __bpf_kfunc int bpf_strstr(const char *s1__ign, const char *s2__ign) { - return bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX); + return __bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX, false); +} + +/** + * bpf_strcasestr - Find the first substring in a string, ignoring the case of + * the characters + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within @s1__ign + * * %-ENOENT - @s2__ign is not a substring of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strcasestr(const char *s1__ign, const char *s2__ign) +{ + return __bpf_strnstr(s1__ign, s2__ign, XATTR_SIZE_MAX, true); } + +/** + * bpf_strnstr - Find the first substring in a length-limited string + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * @len: the maximum number of characters to search + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within the first @len characters of @s1__ign + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t len) +{ + return __bpf_strnstr(s1__ign, s2__ign, len, false); +} + +/** + * bpf_strnstr - Find the first substring in a length-limited string + * @s1__ign: The string to be searched + * @s2__ign: The string to search for + * @len: the maximum number of characters to search + * + * Return: + * * >=0 - Index of the first character of the first occurrence of @s2__ign + * within the first @len characters of @s1__ign + * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign + * * %-EFAULT - Cannot read one of the strings + * * %-E2BIG - One of the strings is too large + * * %-ERANGE - One of the strings is outside of kernel address space + */ +__bpf_kfunc int bpf_strncasestr(const char *s1__ign, const char *s2__ign, + size_t len) +{ + return __bpf_strnstr(s1__ign, s2__ign, len, true); +} + #ifdef CONFIG_KEYS /** * bpf_lookup_user_key - lookup a key by its serial @@ -4367,7 +4419,9 @@ BTF_ID_FLAGS(func, bpf_strnlen); BTF_ID_FLAGS(func, bpf_strspn); BTF_ID_FLAGS(func, bpf_strcspn); BTF_ID_FLAGS(func, bpf_strstr); +BTF_ID_FLAGS(func, bpf_strcasestr); BTF_ID_FLAGS(func, bpf_strnstr); +BTF_ID_FLAGS(func, bpf_strncasestr); #if defined(CONFIG_BPF_LSM) && defined(CONFIG_CGROUPS) BTF_ID_FLAGS(func, bpf_cgroup_read_xattr, KF_RCU) #endif -- 2.51.0

2 weeks

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[PATCH bpf-next 2/2] selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Add tests for new kfuncs bpf_strcasestr() and bpf_strncasestr(). Signed-off-by: Rong Tao <rongtao(a)cestc.cn> --- .../selftests/bpf/prog_tests/string_kfuncs.c | 2 ++ .../selftests/bpf/progs/string_kfuncs_failure1.c | 12 ++++++++++++ .../selftests/bpf/progs/string_kfuncs_failure2.c | 2 ++ .../selftests/bpf/progs/string_kfuncs_success.c | 13 +++++++++++++ 4 files changed, 29 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c b/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c index 4d66fad3c8bd..0f3bf594e7a5 100644 --- a/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c +++ b/tools/testing/selftests/bpf/prog_tests/string_kfuncs.c @@ -20,7 +20,9 @@ static const char * const test_cases[] = { "strcspn_str", "strcspn_reject", "strstr", + "strcasestr", "strnstr", + "strncasestr", }; void run_too_long_tests(void) diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c b/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c index 99d72c68f76a..826e6b6aff7e 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_failure1.c @@ -45,8 +45,12 @@ SEC("syscall") __retval(USER_PTR_ERR)int test_strcspn_null1(void *ctx) { return SEC("syscall") __retval(USER_PTR_ERR)int test_strcspn_null2(void *ctx) { return bpf_strcspn("hello", NULL); } SEC("syscall") __retval(USER_PTR_ERR)int test_strstr_null1(void *ctx) { return bpf_strstr(NULL, "hello"); } SEC("syscall") __retval(USER_PTR_ERR)int test_strstr_null2(void *ctx) { return bpf_strstr("hello", NULL); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strcasestr_null1(void *ctx) { return bpf_strcasestr(NULL, "hello"); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strcasestr_null2(void *ctx) { return bpf_strcasestr("hello", NULL); } SEC("syscall") __retval(USER_PTR_ERR)int test_strnstr_null1(void *ctx) { return bpf_strnstr(NULL, "hello", 1); } SEC("syscall") __retval(USER_PTR_ERR)int test_strnstr_null2(void *ctx) { return bpf_strnstr("hello", NULL, 1); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strncasestr_null1(void *ctx) { return bpf_strncasestr(NULL, "hello", 1); } +SEC("syscall") __retval(USER_PTR_ERR)int test_strncasestr_null2(void *ctx) { return bpf_strncasestr("hello", NULL, 1); } /* Passing userspace ptr to string kfuncs */ SEC("syscall") __retval(USER_PTR_ERR) int test_strcmp_user_ptr1(void *ctx) { return bpf_strcmp(user_ptr, "hello"); } @@ -65,8 +69,12 @@ SEC("syscall") __retval(USER_PTR_ERR) int test_strcspn_user_ptr1(void *ctx) { re SEC("syscall") __retval(USER_PTR_ERR) int test_strcspn_user_ptr2(void *ctx) { return bpf_strcspn("hello", user_ptr); } SEC("syscall") __retval(USER_PTR_ERR) int test_strstr_user_ptr1(void *ctx) { return bpf_strstr(user_ptr, "hello"); } SEC("syscall") __retval(USER_PTR_ERR) int test_strstr_user_ptr2(void *ctx) { return bpf_strstr("hello", user_ptr); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strcasestr_user_ptr1(void *ctx) { return bpf_strcasestr(user_ptr, "hello"); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strcasestr_user_ptr2(void *ctx) { return bpf_strcasestr("hello", user_ptr); } SEC("syscall") __retval(USER_PTR_ERR) int test_strnstr_user_ptr1(void *ctx) { return bpf_strnstr(user_ptr, "hello", 1); } SEC("syscall") __retval(USER_PTR_ERR) int test_strnstr_user_ptr2(void *ctx) { return bpf_strnstr("hello", user_ptr, 1); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strncasestr_user_ptr1(void *ctx) { return bpf_strncasestr(user_ptr, "hello", 1); } +SEC("syscall") __retval(USER_PTR_ERR) int test_strncasestr_user_ptr2(void *ctx) { return bpf_strncasestr("hello", user_ptr, 1); } #endif /* __TARGET_ARCH_s390 */ @@ -87,7 +95,11 @@ SEC("syscall") __retval(-EFAULT) int test_strcspn_pagefault1(void *ctx) { return SEC("syscall") __retval(-EFAULT) int test_strcspn_pagefault2(void *ctx) { return bpf_strcspn("hello", invalid_kern_ptr); } SEC("syscall") __retval(-EFAULT) int test_strstr_pagefault1(void *ctx) { return bpf_strstr(invalid_kern_ptr, "hello"); } SEC("syscall") __retval(-EFAULT) int test_strstr_pagefault2(void *ctx) { return bpf_strstr("hello", invalid_kern_ptr); } +SEC("syscall") __retval(-EFAULT) int test_strcasestr_pagefault1(void *ctx) { return bpf_strcasestr(invalid_kern_ptr, "hello"); } +SEC("syscall") __retval(-EFAULT) int test_strcasestr_pagefault2(void *ctx) { return bpf_strcasestr("hello", invalid_kern_ptr); } SEC("syscall") __retval(-EFAULT) int test_strnstr_pagefault1(void *ctx) { return bpf_strnstr(invalid_kern_ptr, "hello", 1); } SEC("syscall") __retval(-EFAULT) int test_strnstr_pagefault2(void *ctx) { return bpf_strnstr("hello", invalid_kern_ptr, 1); } +SEC("syscall") __retval(-EFAULT) int test_strncasestr_pagefault1(void *ctx) { return bpf_strncasestr(invalid_kern_ptr, "hello", 1); } +SEC("syscall") __retval(-EFAULT) int test_strncasestr_pagefault2(void *ctx) { return bpf_strncasestr("hello", invalid_kern_ptr, 1); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c b/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c index e41cc5601994..05e1da1f250f 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_failure2.c @@ -19,6 +19,8 @@ SEC("syscall") int test_strspn_accept_too_long(void *ctx) { return bpf_strspn("b SEC("syscall") int test_strcspn_str_too_long(void *ctx) { return bpf_strcspn(long_str, "b"); } SEC("syscall") int test_strcspn_reject_too_long(void *ctx) { return bpf_strcspn("b", long_str); } SEC("syscall") int test_strstr_too_long(void *ctx) { return bpf_strstr(long_str, "hello"); } +SEC("syscall") int test_strcasestr_too_long(void *ctx) { return bpf_strcasestr(long_str, "hello"); } SEC("syscall") int test_strnstr_too_long(void *ctx) { return bpf_strnstr(long_str, "hello", sizeof(long_str)); } +SEC("syscall") int test_strncasestr_too_long(void *ctx) { return bpf_strncasestr(long_str, "hello", sizeof(long_str)); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/string_kfuncs_success.c b/tools/testing/selftests/bpf/progs/string_kfuncs_success.c index 2e3498e37b9c..d21330b4cc3b 100644 --- a/tools/testing/selftests/bpf/progs/string_kfuncs_success.c +++ b/tools/testing/selftests/bpf/progs/string_kfuncs_success.c @@ -33,8 +33,12 @@ __test(11) int test_strnlen(void *ctx) { return bpf_strnlen(str, 12); } __test(5) int test_strspn(void *ctx) { return bpf_strspn(str, "ehlo"); } __test(2) int test_strcspn(void *ctx) { return bpf_strcspn(str, "lo"); } __test(6) int test_strstr_found(void *ctx) { return bpf_strstr(str, "world"); } +__test(6) int test_strcasestr_found1(void *ctx) { return bpf_strcasestr(str, "world"); } +__test(6) int test_strcasestr_found2(void *ctx) { return bpf_strcasestr(str, "WORLD"); } __test(-ENOENT) int test_strstr_notfound(void *ctx) { return bpf_strstr(str, "hi"); } +__test(-ENOENT) int test_strcasestr_notfound(void *ctx) { return bpf_strcasestr(str, "hi"); } __test(0) int test_strstr_empty(void *ctx) { return bpf_strstr(str, ""); } +__test(0) int test_strcasestr_empty(void *ctx) { return bpf_strcasestr(str, ""); } __test(0) int test_strnstr_found1(void *ctx) { return bpf_strnstr("", "", 0); } __test(0) int test_strnstr_found2(void *ctx) { return bpf_strnstr(str, "hello", 5); } __test(0) int test_strnstr_found3(void *ctx) { return bpf_strnstr(str, "hello", 6); } @@ -42,5 +46,14 @@ __test(-ENOENT) int test_strnstr_notfound1(void *ctx) { return bpf_strnstr(str, __test(-ENOENT) int test_strnstr_notfound2(void *ctx) { return bpf_strnstr(str, "hello", 4); } __test(-ENOENT) int test_strnstr_notfound3(void *ctx) { return bpf_strnstr("", "a", 0); } __test(0) int test_strnstr_empty(void *ctx) { return bpf_strnstr(str, "", 1); } +__test(0) int test_strncasestr_found1(void *ctx) { return bpf_strncasestr("", "", 0); } +__test(0) int test_strncasestr_found2(void *ctx) { return bpf_strncasestr(str, "hello", 5); } +__test(0) int test_strncasestr_found3(void *ctx) { return bpf_strncasestr(str, "hello", 6); } +__test(0) int test_strncasestr_found4(void *ctx) { return bpf_strncasestr(str, "HELLO", 5); } +__test(0) int test_strncasestr_found5(void *ctx) { return bpf_strncasestr(str, "HELLO", 6); } +__test(-ENOENT) int test_strncasestr_notfound1(void *ctx) { return bpf_strncasestr(str, "hi", 10); } +__test(-ENOENT) int test_strncasestr_notfound2(void *ctx) { return bpf_strncasestr(str, "hello", 4); } +__test(-ENOENT) int test_strncasestr_notfound3(void *ctx) { return bpf_strncasestr("", "a", 0); } +__test(0) int test_strncasestr_empty(void *ctx) { return bpf_strncasestr(str, "", 1); } char _license[] SEC("license") = "GPL"; -- 2.51.0

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[PATCH bpf-next 0/2] Add kfuncs bpf_strcasestr and bpf_strncasestr

by Rong Tao

From: Rong Tao <rongtao(a)cestc.cn> Add kfuncs bpf_strcasestr and bpf_strncasestr, which are extensions of bpf_strstr and bpf_strnstr, suitable for more scenarios. Rong Tao (2): bpf: add bpf_strcasestr,bpf_strncasestr kfuncs selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs kernel/bpf/helpers.c | 96 +++++++++++++++---- .../selftests/bpf/prog_tests/string_kfuncs.c | 2 + .../bpf/progs/string_kfuncs_failure1.c | 12 +++ .../bpf/progs/string_kfuncs_failure2.c | 2 + .../bpf/progs/string_kfuncs_success.c | 13 +++ 5 files changed, 104 insertions(+), 21 deletions(-) -- 2.51.0

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[RFC PATCH v3 nf-next] selftests: netfilter: Add bridge_fastpath.sh

by Eric Woudstra

Add a script to test various scenarios where a bridge is involved in the fastpath. It runs tests in the forward path, and also in a bridged path. The setup is similar to a basic home router with multiple lan ports. It uses 3 pairs of veth-devices. Each or all pairs can be replaced by a pair of real interfaces, interconnected by wire. This is necessary to test the behavior when dealing with dsa ports, foreign (dsa) ports and switchdev userports that support SWITCHDEV_OBJ_ID_PORT_VLAN. See the head of the script for a detailed description. Run without arguments to perform all tests on veth-devices. Signed-off-by: Eric Woudstra <ericwouds(a)gmail.com> --- This test script is written first for the proposed bridge-fastpath patch-sets, but it's use is more general and can easily be expanded. Changes in v3: - Removed all warnings reported by shellcheck -x -e SC2317 - Improved del_pppoe(), check if interfaces are removed - Added is_known_issue() to warn instead of error for known issues - Link down and (hardware) interfaces to default netns at end of script - Removed matching ip(v6) address Changes in v2: - Moved test-series to functions - Moved code to set_pair_link() up/down - Added conntrack zone to bridged traffic - Test bridge chain prerouting in test without fastpath and bridge chain forward in tests with fastpath Some example outputs of this last version of patches from different hardware, without and with patches: ALL VETH: ========= ./bridge_fastpath.sh -t Setup: CLIENT 0 veth0cl | veth0rt WAN ROUTER LAN1 LAN2 veth1rt veth2rt | | veth1cl veth2cl CLIENT 1 CLIENT 2 Without patches: PASS: unaware bridge, without encaps, without fastpath PASS: unaware bridge, with single vlan encap, without fastpath WARN: unaware bridge, with double q vlan encaps, without fastpath: ipv4/6: established bytes 0 < 4194304 WARN: unaware bridge, with 802.1ad vlan encaps, without fastpath: ipv4/6: established bytes 0 < 4194304 WARN: unaware bridge, with pppoe encap, without fastpath: ipv4/6: established bytes 0 < 4194304 WARN: unaware bridge, with pppoe-in-q encaps, without fastpath: ipv4/6: established bytes 0 < 4194304 PASS: aware bridge, without/without vlan encap, without fastpath PASS: aware bridge, with/without vlan encap, without fastpath PASS: aware bridge, with/with vlan encap, without fastpath PASS: aware bridge, without/with vlan encap, without fastpath PASS: forward, without vlan-device, without vlan encap, client1, without fastpath PASS: forward, without vlan-device, without vlan encap, client1, with fastpath PASS: forward, without vlan-device, with vlan encap, client1, without fastpath WARN: forward, without vlan-device, with vlan encap, client1, with fastpath: ipv4/6: tcp broken PASS: forward, with vlan-device, without vlan encap, client1, without fastpath PASS: forward, with vlan-device, without vlan encap, client1, with fastpath PASS: forward, with vlan-device, with vlan encap, client1, without fastpath PASS: forward, with vlan-device, with vlan encap, client1, with fastpath PASS: all tests passed With patches: PASS: unaware bridge, without encaps, without fastpath PASS: unaware bridge, without encaps, with fastpath PASS: unaware bridge, with single vlan encap, without fastpath PASS: unaware bridge, with single vlan encap, with fastpath PASS: unaware bridge, with double q vlan encaps, without fastpath PASS: unaware bridge, with double q vlan encaps, with fastpath PASS: unaware bridge, with 802.1ad vlan encaps, without fastpath PASS: unaware bridge, with 802.1ad vlan encaps, with fastpath PASS: unaware bridge, with pppoe encap, without fastpath PASS: unaware bridge, with pppoe encap, with fastpath PASS: unaware bridge, with pppoe-in-q encaps, without fastpath PASS: unaware bridge, with pppoe-in-q encaps, with fastpath PASS: aware bridge, without/without vlan encap, without fastpath PASS: aware bridge, without/without vlan encap, with fastpath PASS: aware bridge, with/without vlan encap, without fastpath PASS: aware bridge, with/without vlan encap, with fastpath PASS: aware bridge, with/with vlan encap, without fastpath PASS: aware bridge, with/with vlan encap, with fastpath PASS: aware bridge, without/with vlan encap, without fastpath PASS: aware bridge, without/with vlan encap, with fastpath PASS: forward, without vlan-device, without vlan encap, client1, without fastpath PASS: forward, without vlan-device, without vlan encap, client1, with fastpath PASS: forward, without vlan-device, with vlan encap, client1, without fastpath PASS: forward, without vlan-device, with vlan encap, client1, with fastpath PASS: forward, with vlan-device, without vlan encap, client1, without fastpath PASS: forward, with vlan-device, without vlan encap, client1, with fastpath PASS: forward, with vlan-device, with vlan encap, client1, without fastpath PASS: forward, with vlan-device, with vlan encap, client1, with fastpath PASS: all tests passed BANANAPI-R3 (lan1 & lan2 are dsa): ============ Without patches: ./bridge_fastpath.sh -t -0 enu1u2,lan2 -1 enu1u1,lan1 -2 lan4,eth1 Setup: CLIENT 0 enu1u2 | lan2 WAN ROUTER LAN1 LAN2 lan1 eth1 | | enu1u1 lan4 CLIENT 1 CLIENT 2 PASS: unaware bridge, without encaps, without fastpath PASS: unaware bridge, with single vlan encap, without fastpath WARN: unaware bridge, with pppoe encap, without fastpath: ipv4/6: established bytes 0 < 4194304 WARN: unaware bridge, with pppoe-in-q encaps, without fastpath: ipv4/6: established bytes 0 < 4194304 PASS: aware bridge, without/without vlan encap, without fastpath PASS: aware bridge, with/without vlan encap, without fastpath PASS: aware bridge, with/with vlan encap, without fastpath PASS: aware bridge, without/with vlan encap, without fastpath PASS: forward, without vlan-device, without vlan encap, client1, without fastpath WARN: forward, without vlan-device, without vlan encap, client1, with fastpath: ipv4: counted bytes 2110480 > 2097152 WARN: forward, without vlan-device, without vlan encap, client1, with fastpath: ipv6: counted bytes 2116104 > 2097152 PASS: forward, without vlan-device, without vlan encap, client1, with hw_fastpath PASS: forward, without vlan-device, without vlan encap, client2, without fastpath PASS: forward, without vlan-device, without vlan encap, client2, with fastpath PASS: forward, without vlan-device, without vlan encap, client2, with hw_fastpath PASS: forward, without vlan-device, with vlan encap, client1, without fastpath WARN: forward, without vlan-device, with vlan encap, client1, with fastpath: ipv4/6: tcp broken WARN: forward, without vlan-device, with vlan encap, client1, with hw_fastpath: ipv4/6: tcp broken PASS: forward, without vlan-device, with vlan encap, client2, without fastpath WARN: forward, without vlan-device, with vlan encap, client2, with fastpath: ipv4/6: tcp broken WARN: forward, without vlan-device, with vlan encap, client2, with hw_fastpath: ipv4/6: tcp broken PASS: forward, with vlan-device, without vlan encap, client1, without fastpath PASS: forward, with vlan-device, without vlan encap, client1, with fastpath PASS: forward, with vlan-device, without vlan encap, client1, with hw_fastpath PASS: forward, with vlan-device, without vlan encap, client2, without fastpath WARN: forward, with vlan-device, without vlan encap, client2, with fastpath: ipv4: counted bytes 2122388 > 2097152 WARN: forward, with vlan-device, without vlan encap, client2, with fastpath: ipv6: counted bytes 2129280 > 2097152 WARN: forward, with vlan-device, without vlan encap, client2, with hw_fastpath: ipv4: counted bytes 2110428 > 2097152 WARN: forward, with vlan-device, without vlan encap, client2, with hw_fastpath: ipv6: counted bytes 2140144 > 2097152 PASS: forward, with vlan-device, with vlan encap, client1, without fastpath PASS: forward, with vlan-device, with vlan encap, client1, with fastpath PASS: forward, with vlan-device, with vlan encap, client1, with hw_fastpath PASS: forward, with vlan-device, with vlan encap, client2, without fastpath PASS: forward, with vlan-device, with vlan encap, client2, with fastpath PASS: forward, with vlan-device, with vlan encap, client2, with hw_fastpath PASS: all tests passed With patches: PASS: unaware bridge, without encaps, without fastpath PASS: unaware bridge, without encaps, with fastpath PASS: unaware bridge, without encaps, with hw_fastpath PASS: unaware bridge, with single vlan encap, without fastpath PASS: unaware bridge, with single vlan encap, with fastpath PASS: unaware bridge, with single vlan encap, with hw_fastpath PASS: unaware bridge, with pppoe encap, without fastpath PASS: unaware bridge, with pppoe encap, with fastpath PASS: unaware bridge, with pppoe encap, with hw_fastpath PASS: unaware bridge, with pppoe-in-q encaps, without fastpath PASS: unaware bridge, with pppoe-in-q encaps, with fastpath PASS: unaware bridge, with pppoe-in-q encaps, with hw_fastpath PASS: aware bridge, without/without vlan encap, without fastpath PASS: aware bridge, without/without vlan encap, with fastpath PASS: aware bridge, without/without vlan encap, with hw_fastpath PASS: aware bridge, with/without vlan encap, without fastpath PASS: aware bridge, with/without vlan encap, with fastpath PASS: aware bridge, with/without vlan encap, with hw_fastpath PASS: aware bridge, with/with vlan encap, without fastpath PASS: aware bridge, with/with vlan encap, with fastpath PASS: aware bridge, with/with vlan encap, with hw_fastpath PASS: aware bridge, without/with vlan encap, without fastpath PASS: aware bridge, without/with vlan encap, with fastpath PASS: aware bridge, without/with vlan encap, with hw_fastpath PASS: forward, without vlan-device, without vlan encap, client1, without fastpath PASS: forward, without vlan-device, without vlan encap, client1, with fastpath PASS: forward, without vlan-device, without vlan encap, client1, with hw_fastpath PASS: forward, without vlan-device, without vlan encap, client2, without fastpath PASS: forward, without vlan-device, without vlan encap, client2, with fastpath PASS: forward, without vlan-device, without vlan encap, client2, with hw_fastpath PASS: forward, without vlan-device, with vlan encap, client1, without fastpath PASS: forward, without vlan-device, with vlan encap, client1, with fastpath PASS: forward, without vlan-device, with vlan encap, client1, with hw_fastpath PASS: forward, without vlan-device, with vlan encap, client2, without fastpath PASS: forward, without vlan-device, with vlan encap, client2, with fastpath PASS: forward, without vlan-device, with vlan encap, client2, with hw_fastpath PASS: forward, with vlan-device, without vlan encap, client1, without fastpath PASS: forward, with vlan-device, without vlan encap, client1, with fastpath PASS: forward, with vlan-device, without vlan encap, client1, with hw_fastpath PASS: forward, with vlan-device, without vlan encap, client2, without fastpath PASS: forward, with vlan-device, without vlan encap, client2, with fastpath PASS: forward, with vlan-device, without vlan encap, client2, with hw_fastpath PASS: forward, with vlan-device, with vlan encap, client1, without fastpath PASS: forward, with vlan-device, with vlan encap, client1, with fastpath PASS: forward, with vlan-device, with vlan encap, client1, with hw_fastpath PASS: forward, with vlan-device, with vlan encap, client2, without fastpath PASS: forward, with vlan-device, with vlan encap, client2, with fastpath PASS: forward, with vlan-device, with vlan encap, client2, with hw_fastpath PASS: all tests passed .../testing/selftests/net/netfilter/Makefile | 1 + .../net/netfilter/bridge_fastpath.sh | 1055 +++++++++++++++++ 2 files changed, 1056 insertions(+) create mode 100755 tools/testing/selftests/net/netfilter/bridge_fastpath.sh diff --git a/tools/testing/selftests/net/netfilter/Makefile b/tools/testing/selftests/net/netfilter/Makefile index a98ed892f55f..e0de04333a3f 100644 --- a/tools/testing/selftests/net/netfilter/Makefile +++ b/tools/testing/selftests/net/netfilter/Makefile @@ -8,6 +8,7 @@ MNL_LDLIBS := $(shell $(HOSTPKG_CONFIG) --libs libmnl 2>/dev/null || echo -lmnl) TEST_PROGS := br_netfilter.sh bridge_brouter.sh TEST_PROGS += br_netfilter_queue.sh +TEST_PROGS += bridge_fastpath.sh TEST_PROGS += conntrack_dump_flush.sh TEST_PROGS += conntrack_icmp_related.sh TEST_PROGS += conntrack_ipip_mtu.sh diff --git a/tools/testing/selftests/net/netfilter/bridge_fastpath.sh b/tools/testing/selftests/net/netfilter/bridge_fastpath.sh new file mode 100755 index 000000000000..614497489edb --- /dev/null +++ b/tools/testing/selftests/net/netfilter/bridge_fastpath.sh @@ -0,0 +1,1055 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Check if conntrack, nft chain and fastpath is functional in setups +# where a bridge is in the fastpath. +# +# Commandline options make it possible to use real ethernet pairs +# instead of veth-device pairs. Any, or all, pairs can be tested using +# real hardware pairs. This is can be useful to test dsa-ports, +# switchdev (dsa) foreign ports and switchdev ports supporting +# SWITCHDEV_OBJ_ID_PORT_VLAN. +# +# First tcp is tested. Conntrack and nft chain are tested using a counter. +# When there is a fastpath possible between the interfaces then the +# fastpath is also tested. +# When there is a hardware offloaded fastpath possible between the +# interfaces then the hardware offloaded path is also tested. +# +# Setup is as a typical router: +# +# nsclientwan +# | +# nsrt +# | | +# nsclient1 nsclient2 +# +# Masquerading for ipv4 only. +# +# First check if a bridge table forward chain can be setup, skip +# these tests if this is not possible. +# Then check if a inet table forward chain can be setup, skip +# these tests if this is not possible. +# +# Different setups of paths are tested that involve a bridge in the +# fastpath. This can be in the forward-fastpath or in the bridge-fastpath. +# +# The first series, in the bridge-fastpath, using a vlan-unaware bridge. +# Traffic with the following vlan-tags is checked: +# a. without vlan +# b. single vlan +# c. double q vlan (only on veth-devices) +# d. 802.1ad vlan (only on veth-devices) +# e. pppoe (when available) +# f. pppoe-in-q (when available) +# +# (for items c to f fastpath can only work when a conntrack zone is set) +# (double tag testing results in broken tcp traffic on most hardware, +# in this test setup, use '-a' argument to test it anyway) +# (pppoe testing takes place if pppd and pppoe-server are installed) +# +# The second series, in the bridge-fastpath, using a vlan-aware bridge. +# Here we test all combinations of ingress/egress with or without single +# vlan encaps. +# +# The third series, in the forward-fastpath, using a vlan-aware bridge, +# without a vlan-device linked to the master port. We test the same combinations +# of ingress/egress with or without single vlan encaps. +# +# The fourth series, in the forward-fastpath, using a vlan-aware bridge, +# with a vlan-device linked to the master port. We test the same combinations +# of ingress/egress with or without single vlan encaps. +# +# Note 1: Using dsa userports on both sides of eth-pairs client1 or client2 +# gives erratic and unpredictable results. Use, for example, an usb-eth device +# on the client side to test a dsa-userport. +# +# Note 2: Testing the hardware offloaded fastpath, it is not checked if the +# packets do not follow the software fastpath instead. A universal way to +# check this should be added at some point. +# +# Note 3: Some interfaces to test on the router side, are netns immutable. +# Use the -d or --defaultnsrouter option so that the interfaces of the router +# do not have to change netns. The router is build up in the default netns. +# + +source lib.sh + +checktool "nft --version" "run test without nft" +checktool "socat -h" "run test without socat" +checktool "bridge -V" "run test without bridge" + +NR_OF_TESTS=4 +VID1=100 +VID2=101 +BRWAN=brwan +BRLAN=brlan +BRCL=brcl +LINKUP_TIMEOUT=10 +PING_TIMEOUT=10 +SOCAT_TIMEOUT=10 +filesize=$((2 * 1024 * 1024)) + +filein=$(mktemp) +file1out=$(mktemp) +file2out=$(mktemp) +pppoeserveroptions=$(mktemp) +pppoeserverpid=$(mktemp) + +setup_ns nsclientwan nsclientlan1 nsclientlan2 + + WAN=0 ; LAN1=1 ; LAN2=2 ; ADWAN=3 ; ADLAN=4 +nsa=( "$nsclientwan" "$nsclientlan1" "$nsclientlan2" ) # $nsrt $nsrt +AD4=( '192.168.1.1' '192.168.2.101' '192.168.2.102' '192.168.1.2' '192.168.2.1' ) +AD6=( 'dead:1::1' 'dead:2::101' 'dead:2::102' 'dead:1::2' 'dead:2::1' ) + +tests_string=$(seq 1 $NR_OF_TESTS) + +while [ "${1:-}" != '' ]; do + case "$1" in + '-0' | '--pairwan') + shift + vethcl[WAN]="${1%,*}" + vethrt[WAN]="${1#*,}" + ;; + '-1' | '--pairlan1') + shift + vethcl[LAN1]="${1%,*}" + vethrt[LAN1]="${1#*,}" + ;; + '-2' | '--pairlan2') + shift + vethcl[LAN2]="${1%,*}" + vethrt[LAN2]="${1#*,}" + ;; + '-s' | '--filesize') + shift + filesize=$1 + ;; + '-p' | '--parts') + shift + tests_string=$1 + ;; + '-4' | '--ipv4') + do_ipv4=1 + ;; + '-6' | '--ipv6') + do_ipv6=1 + ;; + '-n' | '--noskip') + noskip=1 + ;; + '-d' | '--defaultnsrouter') + defaultnsrouter=1 + ;; + '-f' | '--fixmac') + fixmac=1 + ;; + '-t' | '--showtree') + showtree=1 + ;; + *) + cat <<-EOF + Usage: $(basename "$0") [OPTION]... + -0 --pairwan eth0cl,eth0rt pair of real interfaces to use on wan side + -1 --pairlan1 eth1cl,eth1rt pair of real interfaces to use on lan1 side + -2 --pairlan2 eth2cl,eth2rt pair of real interfaces to use on lan2 side + -s --filesize filesize to use for testing in bytes + -p --parts partnumbers of tests to run, comma separated + -4|-6 --ipv4|--ipv6 test ipv4/6 only + -d --defaultnsrouter router in default network namespace, caution! + -f --fixmac change mac address when conflict found + -n --noskip also perform the normally skipped tests + -t --showtree show the tree of used interfaces + EOF + exit "$ksft_skip" + ;; + esac + shift +done + +for i in ${tests_string//','/' '}; do + tests[i]="yes" +done + +if [ -n "$defaultnsrouter" ]; then + nsrt="nsrt-$(mktemp -u XXXXXX)" + touch "/var/run/netns/$nsrt" + mount --bind /proc/1/ns/net "/var/run/netns/$nsrt" +else + setup_ns nsrt +fi +nsa+=("$nsrt" "$nsrt") + +cleanup() { + if [ -n "$defaultnsrouter" ]; then + umount "/var/run/netns/$nsrt" + rm -f "/var/run/netns/$nsrt" + fi + cleanup_all_ns + rm -f "$filein" "$file1out" "$file2out" "$pppoeserveroptions" "$pppoeserverpid" +} + +trap cleanup EXIT + +head -c "$filesize" < /dev/urandom > "$filein" + +check_mac() +{ + local ns=$1 + local dev=$2 + local othermacs=$3 + local mac + + mac=$(ip -net "$ns" -br link show dev "$dev" | \ + grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}') + + if [[ ! "$othermacs" =~ $mac ]]; then + echo "$mac" + return 0 + fi + echo "WARN: Conflicting mac address $dev $mac" 1>&2 + + [ -z "$fixmac" ] && return 1 + + for (( j = 0 ; j < 10 ; j++ )); do + mac="${mac::6}$(printf %02x:%02x:%02x:%02x $((RANDOM%256)) \ + $((RANDOM%256)) $((RANDOM%256)) $((RANDOM%256)))" + [[ "$othermacs" =~ $mac ]] && continue + echo "$mac" + ip -net "$ns" link set dev "$dev" address "$mac" 1>&2 + return $? + done + return 1 +} + +is_link() +{ + local updown=$1 + local ns=$2 + local dev=$3 + + if ip -net "$ns" link show dev "$dev" "${updown,,}" 2>/dev/null | \ + grep -q "state ${updown^^}" + then + return 0 + fi + return 1 +} + +set_pair_link() +{ + local updown=$1 + local all="${*:2}" + local lret=0 + local i j + + for i in $all; do + ns="${nsa[$i]}" + ip -net "$ns" link set "${vethcl[$i]}" "$updown" + lret=$((lret | $?)) + ip -net "$nsrt" link set "${vethrt[$i]}" "$updown" + lret=$((lret | $?)) + done + [ $lret -ne 0 ] && return 1 + + for j in $(seq 1 $((LINKUP_TIMEOUT * 5 ))); do + lret=0 + for i in $all; do + ns="${nsa[$i]}" + is_link "$updown" "$ns" "${vethcl[$i]}" + lret=$((lret | $?)) + is_link "$updown" "$nsrt" "${vethrt[$i]}" + lret=$((lret | $?)) + done + [ $lret -eq 0 ] && break + sleep 0.2 + done + return $lret +} + +wait_ping() +{ + local i1=$1 + local i2=$2 + local ns1=${nsa[$i1]} + local j + local lret + + for j in $(seq 1 $((PING_TIMEOUT * 5 ))); do + ip netns exec "$ns1" ping -c 1 -w $PING_TIMEOUT -i 0.2 \ + -q "${AD4[$i2]}" >/dev/null 2>&1 + lret=$? + [ $lret -le 1 ] && return $lret + sleep 0.2 + done + return 1 +} + +add_addr() +{ + local i=$1 + local dev=$2 + local ns=${nsa[$i]} + local ad4=${AD4[$i]} + local ad6=${AD6[$i]} + + ip -net "$ns" addr add "${ad4}/24" dev "$dev" + ip -net "$ns" addr add "${ad6}/64" dev "$dev" nodad + if [[ "$ns" == "nsclientlan"* ]]; then + ip -net "$ns" route add default via "${AD4[$ADLAN]}" + ip -net "$ns" route add default via "${AD6[$ADLAN]}" + elif [[ "$ns" == "nsclientwan"* ]]; then + ip -net "$ns" route add default via "${AD6[$ADWAN]}" + fi + +} + +del_addr() +{ + local i=$1 + local dev=$2 + local ns=${nsa[$i]} + local ad4=${AD4[$i]} + local ad6=${AD6[$i]} + + if [[ "$ns" == "nsclientlan"* ]]; then + ip -net "$ns" route del default via "${AD6[$ADLAN]}" + ip -net "$ns" route del default via "${AD4[$ADLAN]}" + elif [[ "$ns" == "nsclientwan"* ]]; then + ip -net "$ns" route del default via "${AD6[$ADWAN]}" + fi + ip -net "$ns" addr del "${ad6}/64" dev "$dev" nodad + ip -net "$ns" addr del "${ad4}/24" dev "$dev" +} + +set_client() +{ + local i=$1 + local vlan=$2 + local arg=$3 + local ns=${nsa[$i]} + local vdev="${vethcl[$i]}" + local brdev="$BRCL" + local proto="" + local pvidslave="" + + unset_client "$i" + + if [[ "$vlan" == "qq" ]]; then + ip -net "$ns" link add link "$vdev" name "$vdev.$VID1" type vlan id $VID1 + ip -net "$ns" link add link "$vdev.$VID1" name "$vdev.$VID1.$VID2" \ + type vlan id $VID2 + ip -net "$ns" link set "$vdev.$VID1" up + ip -net "$ns" link set "$vdev.$VID1.$VID2" up + add_addr "$i" "$vdev.$VID1.$VID2" + return + fi + + [[ "$vlan" == "none" ]] && pvidslave="pvid untagged" + [[ "$vlan" == "ad" ]] && proto="vlan_protocol 802.1ad" + + # shellcheck disable=SC2086 + ip -net "$ns" link add "$brdev" type bridge vlan_filtering 1 vlan_default_pvid 0 $proto + ip -net "$ns" link set "$vdev" master "$brdev" + ip -net "$ns" link set "$brdev" up + + # shellcheck disable=SC2086 + bridge -net "$ns" vlan add dev "$vdev" vid $VID1 $pvidslave + bridge -net "$ns" vlan add dev "$brdev" vid $VID1 pvid untagged self + + if [[ "$vlan" == "ad" ]]; then + ip -net "$ns" link add link "$brdev" name "$brdev.$VID2" type vlan id $VID2 + brdev="$brdev.$VID2" + ip -net "$ns" link set "$brdev" up + fi + + if [[ "$arg" != "noaddress" ]]; then + add_addr "$i" "$brdev" + fi +} + +unset_client() +{ + local i=$1 + local ns=${nsa[$i]} + local vdev="${vethcl[$i]}" + local brdev="$BRCL" + + ip -net "$ns" link del "$brdev" type bridge 2>/dev/null + ip -net "$ns" link del "$vdev.$VID1" 2>/dev/null +} + +add_pppoe() +{ + local i1=$1 + local i2=$2 + local dev1=$3 + local dev2=$4 + local desc=$5 + local ns1=${nsa[$i1]} + local ns2=${nsa[$i2]} + + ppp1=0 + while [ -n "$(ip -net "$ns1" link show ppp$ppp1 2>/dev/null)" ] + do ((ppp1++)); done + echo "noauth defaultroute noipdefault unit $ppp1" >"$pppoeserveroptions" + ppp1="ppp$ppp1" + + if ! ip netns exec "$ns1" pppoe-server -k -L "${AD4[$i1]}" -R "${AD4[$i2]}" \ + -I "$dev1" -X "$pppoeserverpid" -O "$pppoeserveroptions" >/dev/null; then + echo "ERROR: $desc: failed to setup pppoe server" 1>&2 + return 1 + fi + + if ! ip netns exec "$ns2" pppd plugin pppoe.so nic-"$dev2" persist holdoff 0 noauth \ + defaultroute noipdefault noaccomp nodeflate noproxyarp nopcomp \ + novj novjccomp linkname "selftest-$$" >/dev/null; then + echo "ERROR: $desc: failed to setup pppoe client" 1>&2 + return 1 + fi + + if ! wait_ping "$i1" "$i2"; then + echo "ERROR: $desc: failed to setup functional pppoe connection" 1>&2 + return 1 + fi + + ppp2=$(tail -n 1 < "/run/pppd/ppp-selftest-$$.pid") + + ip -net "$ns1" addr add "${AD6[$i1]}/64" dev "$ppp1" nodad + ip -net "$ns2" addr add "${AD6[$i2]}/64" dev "$ppp2" nodad + + return 0 +} + +del_pppoe() +{ + local i1=$1 + local i2=$2 + local dev1=$3 + local dev2=$4 + local ns1=${nsa[$i1]} + local ns2=${nsa[$i2]} + local i serverpid clientpid + + serverpid="$(head -n 1 < "$pppoeserverpid")" + clientpid="$(head -n 1 < "/run/pppd/ppp-selftest-$$.pid")" + + [[ -n "$ppp1" ]] && ip -net "$ns1" addr del "${AD6[$i1]}/64" dev "$ppp1" + [[ -n "$ppp2" ]] && ip -net "$ns2" addr del "${AD6[$i2]}/64" dev "$ppp2" + + for i in $(seq 1 $((PING_TIMEOUT * 5 ))); do + if ip -net "$ns2" link show dev "$ppp2" 1>/dev/null 2>/dev/null; then + kill -9 "$clientpid" 2>/dev/null + elif ip -net "$ns1" link show dev "$ppp1" 1>/dev/null 2>/dev/null; then + kill -SIGTERM "$serverpid" 2>/dev/null + else return 0 + fi + sleep 0.2 + done + echo "ERROR: failed to remove pppoe connection" 1>&2 + return 1 +} + +listener_ready() +{ + local ns=$1 + local ipv=$2 + + ss -N "$ns" --ipv"$ipv" -lnt -o "sport = :8080" | grep -q 8080 +} + +test_tcp() { + local i1=$1 + local i2=$2 + local dofast=$3 + local desc=$4 + local ns1=${nsa[$i1]} + local ns2=${nsa[$i2]} + local i=-1 + local lret=0 + local ads="" + local ipv ad a lpid bytes limit error + + if [ -n "$do_ipv4" ]; then ads="${AD4[$i2]}" + elif [ -n "$do_ipv6" ]; then ads="${AD6[$i2]}" + else ads="${AD4[$i2]} ${AD6[$i2]}" + fi + for ad in $ads; do + ((i++)) + if [[ "$ad" =~ ":" ]] + then ipv="6"; a="[${ad}]" + else ipv="4"; a="${ad}" + fi + + rm -f "$file1out" "$file2out" + + # ip netns exec "$nsrt" nft reset counters >/dev/null + # But on some systems this results in 4GB values in packet and byte count, so: + (echo "flush ruleset"; ip netns exec "$nsrt" nft --stateless list ruleset) | \ + ip netns exec "$nsrt" nft -f - + + timeout "$SOCAT_TIMEOUT" ip netns exec "$ns2" socat TCP$ipv-LISTEN:8080,reuseaddr \ + STDIO <"$filein" >"$file2out" 2>/dev/null & + lpid=$! + busywait 1000 listener_ready "$ns2" "$ipv" + + timeout "$SOCAT_TIMEOUT" ip netns exec "$ns1" socat TCP$ipv:"$a":8080 \ + STDIO <"$filein" >"$file1out" 2>/dev/null + + if ! wait $lpid; then + error[i]="tcp broken" + continue + fi + if ! cmp "$filein" "$file1out" >/dev/null 2>&1; then + error[i]="file mismatch to ${ad}" + continue + fi + if ! cmp "$filein" "$file2out" >/dev/null 2>&1; then + error[i]="file mismatch from ${ad}" + continue + fi + + limit=$((2 * filesize)) + bytes=$(ip netns exec "$nsrt" nft list counter $family filter "check" | \ + grep "packets" | cut -d' ' -f4) + if [ -z "$dofast" ] && [ "$bytes" -lt "$limit" ]; then + + error[i]="established bytes $bytes < $limit" + continue + fi + if [ -n "$dofast" ] && [ "$bytes" -gt "$((limit/2))" ]; then + # Significant reduction of bytes expected + error[i]="counted bytes $bytes > $((limit/2))" + continue + fi + + done + + if [ -n "${error[0]}" ]; then + if [[ "${error[0]}" == "${error[1]}" ]]; then + error[0]="$desc: ipv4/6: ${error[0]}" + error[1]="" + else + error[0]="$desc: ipv4: ${error[0]}" + fi + fi + if [ -n "${error[1]}" ]; then + error[1]="$desc: ipv6: ${error[1]}" + fi + + for i in 0 1; do + if [ -n "${error[i]}" ]; then + if is_known_issue "$desc: ${error[i]}"; then + echo "WARN: ${error[i]}" 1>&2 + lret=$((lret | 1)) + else + echo "ERROR: ${error[i]}" 1>&2 + lret=$((lret | 2)) + fi + fi + done + if [ $lret -eq 0 ]; then + echo "PASS: $desc" + fi + return $(( lret & 2 )) +} + +known_issues=( +'*unaware bridge,*with double q vlan encaps,*without fastpath*established*' # 1 +'*unaware bridge,*with 802.1ad vlan encaps,*without fastpath*established*' # 1 +'*unaware bridge,*with pppoe encap,*without fastpath*established*' # 1 +'*unaware bridge,*with pppoe-in-q encaps,*without fastpath*established*' # 1 +'*forward,*without vlan-device, without vlan encap,*with *fastpath:*counted*' # 2 +'*forward,*without vlan-device, with vlan encap,*with *fastpath:*tcp broken*' # 3 +'*forward,*with vlan-device, without vlan encap,*with *fastpath:*counted*' # 4 +) + +is_known_issue() { + local err=$1 + for issue in "${known_issues[@]}"; do + # shellcheck disable=SC2053 + [[ "$err" == $issue ]] && return 0 + done + return 1 +} + +test_paths() { + local i1=$1 + local i2=$2 + local desc=$3 + local ns1=${nsa[$i1]} + local ns2=${nsa[$i2]} + + + if ! setup_nftables "$i1" "$i2"; then + echo "ERROR: $desc: cannot setup nftables" 1>&2 + return 1 + fi + if ! test_tcp "$i1" "$i2" "" "$desc without fastpath"; then + return 1 + fi + + if ! setup_fastpath "$i1" "$i2" "" 2>/dev/null; then + return 0 + fi + if ! test_tcp "$i1" "$i2" "fast" "$desc with fastpath"; then + return 1 + fi + + if ! setup_fastpath "$i1" "$i2" "hw" 2>/dev/null; then + return 0 + fi + if ! test_tcp "$i1" "$i2" "fast" "$desc with hw_fastpath"; then + return 1 + fi + + return 0 + +} + +add_masq() +{ + if [[ $family != "bridge" ]]; then + ip netns exec "$nsrt" nft -f - <<-EOF + table ip nat { + chain postrouting { + type nat hook postrouting priority 0; + oifname ${BRWAN} masquerade + } + } + EOF + else + return 0 + fi +} + +add_zone() +{ + local devs=$1 + + if [[ $family == "bridge" ]]; then + ip netns exec "$nsrt" nft -f - <<-EOF + table ${family} filter { + chain preroutingzones { + type filter hook prerouting priority -300; + iif ${devs} ct zone set 23 + } + } + EOF + fi +} + +setup_nftables() +{ + local devs="{ ${vethrt[$1]} , ${vethrt[$2]} }" + local i1=$1 + local i2=$2 + + ip netns exec "$nsrt" nft flush ruleset + + if ! add_masq; then + return 1 + fi + + add_zone "${devs}" 2>/dev/null + + ip netns exec "$nsrt" nft -f - <<-EOF + table ${family} filter { + counter check { } + chain prerouting { + type filter hook prerouting priority 0; policy accept; + ct state established tcp dport 8080 counter name "check" + ct state established tcp sport 8080 counter name "check" + } + } + EOF +} + +setup_fastpath() +{ + local devs="{ ${vethrt[$1]} , ${vethrt[$2]} }" + local arg=$3 + local flags="" + + [[ "$arg" == "hw" ]] && flags="flags offload" + + ip netns exec "$nsrt" nft flush ruleset + + if ! add_masq; then + return 1 + fi + + add_zone "${devs}" 2>/dev/null + + ip netns exec "$nsrt" nft -f - <<-EOF + table ${family} filter { + counter check { } + flowtable f { + hook ingress priority filter + devices = ${devs} + ${flags} + } + chain forward { + type filter hook forward priority 0; policy accept; + counter name "check" + ct state established flow add @f + } + } + EOF +} + +test_unaware_bridge() +{ + local lret=0 + local i + + for i in $LAN1 $LAN2; do + set_client "$i" none + done + + test_paths $LAN1 $LAN2 "unaware bridge, without encaps, " + lret=$((lret | $?)) + + for i in $LAN1 $LAN2; do + set_client "$i" q + done + + test_paths $LAN1 $LAN2 "unaware bridge, with single vlan encap, " + lret=$((lret | $?)) + + for i in $LAN1 $LAN2; do + set_client "$i" qq + done + + # Skip testing double tagged packets on real hardware + if [ -n "$lan_all_veth" ] || [ -n "$noskip" ]; then + + test_paths $LAN1 $LAN2 "unaware bridge, with double q vlan encaps, " + lret=$((lret | $?)) + + for i in $LAN1 $LAN2; do + set_client "$i" ad + done + + test_paths $LAN1 $LAN2 "unaware bridge, with 802.1ad vlan encaps, " + lret=$((lret | $?)) + + fi + # End Skip testing double tagged packets + + if [ -n "$(command -v pppd 2>/dev/null)" ] && + [ -n "$(command -v pppoe-server 2>/dev/null)" ]; then + # Start pppoe + + for i in $LAN1 $LAN2; do + set_client "$i" none noaddress + done + + if add_pppoe $LAN1 $LAN2 "$BRCL" "$BRCL" "unaware bridge, with pppoe encap"; then + test_paths $LAN1 $LAN2 "unaware bridge, with pppoe encap, " + lret=$((lret | $?)) + fi + + del_pppoe $LAN1 $LAN2 "$BRCL" "$BRCL" + lret=$((lret | $?)) + + for i in $LAN1 $LAN2; do + set_client "$i" q noaddress + done + + if add_pppoe $LAN1 $LAN2 "$BRCL" "$BRCL" "unaware bridge, with pppoe-in-q encaps"; then + test_paths $LAN1 $LAN2 "unaware bridge, with pppoe-in-q encaps, " + lret=$((lret | $?)) + fi + + del_pppoe $LAN1 $LAN2 "$BRCL" "$BRCL" + lret=$((lret | $?)) + + # End pppoe + fi + + for i in $LAN1 $LAN2; do + unset_client "$i" + done + return $lret +} + +test_aware_bridge() +{ + local lret=0 + local i + + for i in $LAN1 $LAN2; do + bridge -net "$nsrt" vlan add dev "${vethrt[$i]}" vid $VID1 pvid untagged + set_client "$i" none + done + test_paths $LAN1 $LAN2 "aware bridge, without/without vlan encap," + lret=$((lret | $?)) + + i=$LAN1 + bridge -net "$nsrt" vlan del dev "${vethrt[$i]}" vid $VID1 pvid untagged + bridge -net "$nsrt" vlan add dev "${vethrt[$i]}" vid $VID1 + set_client $i q + + test_paths $LAN1 $LAN2 "aware bridge, with/without vlan encap, " + lret=$((lret | $?)) + + i=$LAN2 + bridge -net "$nsrt" vlan del dev "${vethrt[$i]}" vid $VID1 pvid untagged + bridge -net "$nsrt" vlan add dev "${vethrt[$i]}" vid $VID1 + set_client $i q + + test_paths $LAN1 $LAN2 "aware bridge, with/with vlan encap, " + lret=$((lret | $?)) + + i=$LAN1 + bridge -net "$nsrt" vlan del dev "${vethrt[$i]}" vid $VID1 + bridge -net "$nsrt" vlan add dev "${vethrt[$i]}" vid $VID1 pvid untagged + set_client $i none + + test_paths $LAN1 $LAN2 "aware bridge, without/with vlan encap, " + lret=$((lret | $?)) + + i=$LAN1 + bridge -net "$nsrt" vlan del dev "${vethrt[$i]}" vid $VID1 pvid untagged + unset_client $i + i=$LAN2 + bridge -net "$nsrt" vlan del dev "${vethrt[$i]}" vid $VID1 + unset_client $i + + return $lret +} + +test_forward_without_vlandev() +{ + local wo=$1 + local lret=0 + local i + + [[ "$wo" == "" ]] && wo="without" + + for i in $LAN1 $LAN2; do + bridge -net "$nsrt" vlan add dev "${vethrt[$i]}" vid $VID1 pvid untagged + set_client "$i" none + done + + test_paths $LAN1 $WAN "forward, $wo vlan-device, without vlan encap, client1," + lret=$((lret | $?)) + if [ -z "$lan_all_veth" ] || [ -n "$noskip" ]; then + test_paths $LAN2 $WAN "forward, $wo vlan-device, without vlan encap, client2," + lret=$((lret | $?)) + fi + + for i in $LAN1 $LAN2; do + bridge -net "$nsrt" vlan del dev "${vethrt[$i]}" vid $VID1 pvid untagged + bridge -net "$nsrt" vlan add dev "${vethrt[$i]}" vid $VID1 + set_client "$i" q + done + + test_paths $LAN1 $WAN "forward, $wo vlan-device, with vlan encap, client1," + lret=$((lret | $?)) + if [ -z "$lan_all_veth" ] || [ -n "$noskip" ]; then + test_paths $LAN2 $WAN "forward, $wo vlan-device, with vlan encap, client2," + lret=$((lret | $?)) + fi + + for i in $LAN1 $LAN2; do + bridge -net "$nsrt" vlan del dev "${vethrt[$i]}" vid $VID1 + unset_client "$i" + done + return $lret +} + +test_forward_with_vlandev() +{ + test_forward_without_vlandev "with" + return $? +} + +ret=0 +### Start Initial Setup ### + +for i in 4 6; do + ip netns exec "$nsrt" sysctl -q net.ipv$i.conf.all.forwarding=1 +done + +### Use brwan to make sure software fastpath is ### +### direct xmit in other direction also ### + +ip -net "$nsrt" link add $BRWAN type bridge +ret=$((ret | $?)) +ip -net "$nsrt" link set $BRWAN up +ret=$((ret | $?)) +if [ $ret -ne 0 ]; then + echo "SKIP: Can't create bridge" + exit "$ksft_skip" +fi + +# If both lan clients are veth-devices, only test 1 in the forward path +if [ -z "${vethcl[$LAN1]}" ] && [ -z "${vethcl[$LAN2]}" ]; then + lan_all_veth=1 +fi + +for i in $WAN $LAN1 $LAN2; do + ns="${nsa[$i]}" + if [ -z "${vethcl[$i]}" ]; then + vethcl[i]="veth${i}cl" + vethrt[i]="veth${i}rt" + ip link add "${vethcl[$i]}" netns "$ns" type veth \ + peer name "${vethrt[$i]}" netns "$nsrt" + ret=$((ret | $?)) + else # Use pair of interconnected hardware interfaces + ip link set "${vethrt[$i]}" netns "$nsrt" + ret=$((ret | $?)) + ip link set "${vethcl[$i]}" netns "$ns" + ret=$((ret | $?)) + fi +done +if [ $ret -ne 0 ]; then + echo "SKIP: (v)eth pairs cannot be used" + exit "$ksft_skip" +fi + +if [ -n "$showtree" ]; then + cat <<-EOF + Setup: + CLIENT 0 + ${vethcl[$WAN]} + | + ${vethrt[$WAN]} + WAN + ROUTER + LAN1 LAN2 + $(printf "%14.14s" "${vethrt[$LAN1]}") ${vethrt[$LAN2]} + | | + $(printf "%14.14s" "${vethcl[$LAN1]}") ${vethcl[$LAN2]} + CLIENT 1 CLIENT 2 + + EOF +fi + +for n in nsclientwan nsclientlan; do + routerside=""; clientside="" + for i in $WAN $LAN1 $LAN2; do + ns="${nsa[$i]}" + [[ "$ns" != "$n"* ]] && continue + mac=$(check_mac "$ns" "${vethcl[$i]}" "$routerside $clientside") + ret=$((ret | $?)) + clientside+=" $mac" + mac=$(check_mac "$nsrt" "${vethrt[$i]}" "$clientside") + ret=$((ret | $?)) + routerside+=" $mac" + done +done +if [ $ret -ne 0 ]; then + echo "SKIP: conflicting mac address" + exit "$ksft_skip" +fi + +set_pair_link up $WAN $LAN1 $LAN2 +ret=$((ret | $?)) +if [ $ret -ne 0 ]; then + echo "SKIP: setting (v)eth pairs link up failed" + exit "$ksft_skip" +fi + +i=$WAN +ip -net "$nsrt" link set "${vethrt[$i]}" master $BRWAN +set_client $i none +add_addr $ADWAN "$BRWAN" + +family="bridge" +if ! setup_nftables $LAN1 $LAN2 2>/dev/null; then + echo "INFO: Cannot add nftables table $family" + tests[1]=""; tests[2]="" +fi +family="inet" +if ! setup_nftables $WAN $LAN1 2>/dev/null; then + echo "INFO: Cannot add nftables table $family" + tests[3]=""; tests[4]="" +fi + +### End Initial Setup ### + +if [ -n "${tests[1]}" ]; then + # Setup brlan as vlan unaware bridge + family="bridge" + ip -net "$nsrt" link add $BRLAN type bridge + ip -net "$nsrt" link set $BRLAN up + for i in $LAN1 $LAN2; do + ip -net "$nsrt" link set "${vethrt[$i]}" master $BRLAN + done + test_unaware_bridge + ret=$((ret | $?)) + ip -net "$nsrt" link del $BRLAN type bridge +fi + +if [ -n "${tests[2]}" ] || [ -n "${tests[3]}" ] || [ -n "${tests[4]}" ]; then + # Setup brlan as vlan aware bridge + family="bridge" + + ip -net "$nsrt" link add $BRLAN type bridge vlan_filtering 1 vlan_default_pvid 0 + ip -net "$nsrt" link set $BRLAN up + bridge -net "$nsrt" vlan add dev $BRLAN vid $VID1 pvid untagged self + add_addr $ADLAN "$BRLAN" + for i in $LAN1 $LAN2; do + ip -net "$nsrt" link set "${vethrt[$i]}" master $BRLAN + done + + if [ -n "${tests[2]}" ]; then + test_aware_bridge + ret=$((ret | $?)) + fi + + family="inet" + + if [ -n "${tests[3]}" ]; then + test_forward_without_vlandev + ret=$((ret | $?)) + fi + + if [ -n "${tests[4]}" ]; then + # Setup vlan-device linked to brlan master port + del_addr $ADLAN "$BRLAN" + ip -net "$nsrt" link set $BRLAN down + bridge -net "$nsrt" vlan del dev $BRLAN vid $VID1 pvid untagged self + bridge -net "$nsrt" vlan add dev $BRLAN vid $VID1 self + ip -net "$nsrt" link add link $BRLAN name $BRLAN.$VID1 type vlan id $VID1 + ip -net "$nsrt" link set $BRLAN up + ip -net "$nsrt" link set "$BRLAN.$VID1" up + add_addr $ADLAN "$BRLAN.$VID1" + test_forward_with_vlandev + ret=$((ret | $?)) + fi + + ip -net "$nsrt" link del $BRLAN type bridge +fi + +### Finish tests ### + +ip -net "$nsrt" link del $BRWAN type bridge + +for i in $WAN $LAN1 $LAN2; do + unset_client "$i" +done + +set_pair_link down $WAN $LAN1 $LAN2 + +for i in $WAN $LAN1 $LAN2; do + ns="${nsa[$i]}" + if [[ "${vethcl[$i]:0:4}" != "veth" ]]; then + ip netns exec "$ns" ip link set "${vethcl[$i]}" netns 1 + fi + if [[ "${vethrt[$i]:0:4}" != "veth" ]]; then + ip netns exec "$nsrt" ip link set "${vethrt[$i]}" netns 1 + fi +done + +if [ $ret -eq 0 ]; then + echo "PASS: all tests passed" +else + echo "ERROR: bridge fastpath test has failed" +fi + +exit $ret -- 2.50.0

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[PATCH bpf] selftests/bpf: fix implicit-function-declaration errors

by Matthieu Baerts (NGI0)

When trying to build the latest BPF selftests, with a debug kernel config, Pahole 1.30 and CLang 20.1.8 (and GCC 15.2), I got these errors: progs/dynptr_success.c:579:9: error: call to undeclared function 'bpf_dynptr_slice'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 579 | data = bpf_dynptr_slice(&ptr, 0, NULL, 1); | ^ progs/dynptr_success.c:579:9: note: did you mean 'bpf_dynptr_size'? .virtme/build-debug-btf//tools/include/vmlinux.h:120280:14: note: 'bpf_dynptr_size' declared here 120280 | extern __u32 bpf_dynptr_size(const struct bpf_dynptr *p) __weak __ksym; | ^ progs/dynptr_success.c:579:7: error: incompatible integer to pointer conversion assigning to '__u64 *' (aka 'unsigned long long *') from 'int' [-Wint-conversion] 579 | data = bpf_dynptr_slice(&ptr, 0, NULL, 1); | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ progs/dynptr_success.c:596:9: error: call to undeclared function 'bpf_dynptr_slice'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 596 | data = bpf_dynptr_slice(&ptr, 0, NULL, 10); | ^ progs/dynptr_success.c:596:7: error: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion] 596 | data = bpf_dynptr_slice(&ptr, 0, NULL, 10); | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I don't have these errors without the debug kernel config from kernel/configs/debug.config. With the debug kernel, bpf_dynptr_slice() is not declared in vmlinux.h. It is declared there without debug.config. The fix is similar to what is done in dynptr_fail.c which is also using bpf_dynptr_slice(): bpf_kfuncs.h is now included. Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- Notes: - This patch looks wrong, I guess bpf_dynptr_slice() should be in vmlinux.h even with a "debug" kernel, but it is not: $ grep -cw bpf_dynptr_slice .virtme/build-debug-btf/tools/include/vmlinux.h 0 $ grep -w bpf_dynptr_slice .virtme/build-btf/tools/include/vmlinux.h extern void *bpf_dynptr_slice(...) __weak __ksym; - This is on top of bpf/master: commit 63d2247e2e37, tag bpf-fixes. - I only see this error when using kernel/configs/debug.config. - Because this has not been spot by the BPF CI, I wonder if I'm building the BPF selftests properly... Here is what I did: $ virtme-configkernel --arch x86_64 --defconfig \ --custom tools/testing/selftests/net/mptcp/config \ --custom kernel/configs/debug.config \ --custom tools/testing/selftests/bpf/config \ O=${PWD}/.virtme/build-debug-btf $ ./scripts/config --file ${PWD}/.virtme/build-debug-btf/.config \ -e NET_NS_REFCNT_TRACKER -d SLUB_DEBUG_ON \ -d DEBUG_KMEMLEAK_AUTO_SCAN -e PANIC_ON_OOPS \ -e SOFTLOCKUP_DETECTOR -e BOOTPARAM_SOFTLOCKUP_PANIC \ -e HARDLOCKUP_DETECTOR -e BOOTPARAM_HUNG_TASK_PANIC \ -e DETECT_HUNG_TASK -e BOOTPARAM_HUNG_TASK_PANIC -e DEBUG_INFO \ -e DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT -e GDB_SCRIPTS \ -e DEBUG_INFO_DWARF4 -e DEBUG_INFO_COMPRESSED \ -e DEBUG_INFO_COMPRESSED_ZLIB -e DEBUG_INFO_BTF_MODULES \ -e MODULE_ALLOW_BTF_MISMATCH -d IA32_EMULATION -e DYNAMIC_DEBUG \ --set-val CONSOLE_LOGLEVEL_DEFAULT 8 -e FTRACE -e FUNCTION_TRACER \ -e DYNAMIC_FTRACE -e FTRACE_SYSCALLS -e HIST_TRIGGERS -e DEBUG_NET \ -m KUNIT -e KUNIT_DEBUGFS -d KUNIT_ALL_TESTS -m MPTCP_KUNIT_TEST \ -e BPF_JIT -e BPF_SYSCALL -e TUN -e CRYPTO_USER_API_HASH \ -e CRYPTO_SHA1 -e NET_SCH_TBF -e BRIDGE -d RETPOLINE -d PCCARD \ -d MACINTOSH_DRIVERS -d SOUND -d USB_SUPPORT -d NEW_LEDS -d SCSI \ -d SURFACE_PLATFORMS -d DRM -d FB -d ATA -d MISC_FILESYSTEMS # sorry, long list used by the MPTCP CI to accelerate builds, etc. $ make O=${PWD}/.virtme/build-debug-btf olddefconfig $ make O=${PWD}/.virtme/build-debug-btf -j$(nproc) -l$(nproc) $ make O=${PWD}/.virtme/build-debug-btf headers_install \ INSTALL_HDR_PATH=${PWD}/.virtme/headers $ make O=${PWD}/.virtme/build-debug-btf \ KHDR_INCLUDES=-I${PWD}/.virtme/headers/includes \ -C tools/testing/selftests/bpf - The errors I got should be reproducible using: $ docker run -v "${PWD}:${PWD}:rw" -w "${PWD}" --privileged --rm -it \ -e INPUT_EXTRA_ENV=INPUT_RUN_TESTS_ONLY=bpftest_all \ --pull always mptcp/mptcp-upstream-virtme-docker:latest \ auto-btf-debug - These issues were originally spot by our MPTCP CI: https://github.com/multipath-tcp/mptcp_net-next/actions/runs/18222911614/jo… - No errors without kernel/configs/debug.config on the CI and on my side - This CI got different issues, and I had to declare more kfuncs there: https://github.com/multipath-tcp/mptcp_net-next/commit/4435d4da9f4f but this CI is currently on top of 'net', with Jiri's patches from https://lore.kernel.org/20251001122223.170830-1-jolsa@kernel.org - The builds have been done from a clean build directory each time. - Do you think the issue is on my side? Dependences? How the selftests are built? I didn't change the way the BPF selftests are built for a while. I had other issues with pahole 1.29, but fixed with 1.30. - Feel free to discard this patch for a better solution (if any). - I don't know which Fixes tag adding, but I doubt this patch is valid. --- tools/testing/selftests/bpf/progs/dynptr_success.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/bpf/progs/dynptr_success.c b/tools/testing/selftests/bpf/progs/dynptr_success.c index 127dea342e5a67dda33e0a39e84d135206d2f3f1..60daf5ce8eb283d8c8bf2d7853eda6313df4fa87 100644 --- a/tools/testing/selftests/bpf/progs/dynptr_success.c +++ b/tools/testing/selftests/bpf/progs/dynptr_success.c @@ -6,6 +6,7 @@ #include <stdbool.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> +#include "bpf_kfuncs.h" #include "bpf_misc.h" #include "errno.h" --- base-commit: 63d2247e2e37d9c589a0a26aa4e684f736a45e29 change-id: 20251003-bpf-sft-fix-build-err-6-18-6a4c032f680a Best regards, -- Matthieu Baerts (NGI0) <matttbe(a)kernel.org>

2 weeks, 1 day

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[PATCH v3 0/3] VMM can handle guest SEA via KVM_EXIT_ARM_SEA

by Jiaqi Yan

Problem ======= When host APEI is unable to claim a synchronous external abort (SEA) during guest abort, today KVM directly injects an asynchronous SError into the VCPU then resumes it. The injected SError usually results in unpleasant guest kernel panic. One of the major situation of guest SEA is when VCPU consumes recoverable uncorrected memory error (UER), which is not uncommon at all in modern datacenter servers with large amounts of physical memory. Although SError and guest panic is sufficient to stop the propagation of corrupted memory, there is room to recover from an UER in a more graceful manner. Proposed Solution ================= The idea is, we can replay the SEA to the faulting VCPU. If the memory error consumption or the fault that cause SEA is not from guest kernel, the blast radius can be limited to the poison-consuming guest process, while the VM can keep running. In addition, instead of doing under the hood without involving userspace, there are benefits to redirect the SEA to VMM: - VM customers care about the disruptions caused by memory errors, and VMM usually has the responsibility to start the process of notifying the customers of memory error events in their VMs. For example some cloud provider emits a critical log in their observability UI [1], and provides a playbook for customers on how to mitigate disruptions to their workloads. - VMM can protect future memory error consumption by unmapping the poisoned pages from stage-2 page table with KVM userfault [2], or by splitting the memslot that contains the poisoned pages. - VMM can keep track of SEA events in the VM. When VMM thinks the status on the host or the VM is bad enough, e.g. number of distinct SEAs exceeds a threshold, it can restart the VM on another healthy host. - Behavior parity with x86 architecture. When machine check exception (MCE) is caused by VCPU, kernel or KVM signals userspace SIGBUS to let VMM either recover from the MCE, or terminate itself with VM. The prior RFC proposes to implement SIGBUS on arm64 as well, but Marc preferred KVM exit over signal [3]. However, implementation aside, returning SEA to VMM is on par with returning MCE to VMM. Once SEA is redirected to VMM, among other actions, VMM is encouraged to inject external aborts into the faulting VCPU. New UAPIs ========= This patchset introduces following userspace-visible changes to empower VMM to control what happens for SEA on guest memory: - KVM_CAP_ARM_SEA_TO_USER. While taking SEA, if userspace has enabled this new capability at VM creation, and the SEA is not owned by kernel allocated memory, instead of injecting SError, return KVM_EXIT_ARM_SEA to userspace. - KVM_EXIT_ARM_SEA. This is the VM exit reason VMM gets. The details about the SEA is provided in arm_sea as much as possible, including sanitized ESR value at EL2, faulting guest virtual and physical addresses if available. * From v2 [4]: - Rebased on "[PATCH] KVM: arm64: nv: Handle SEAs due to VNCR redirection" [5] and kvmarm/next commit 7b8346bd9fce ("KVM: arm64: Don't attempt vLPI mappings when vPE allocation is disabled") - Took the host_owns_sea implementation from Oliver [6, 7]. - Excluded the guest SEA injection patches. - Updated selftest. * From v1 [8]: - Rebased on commit 4d62121ce9b5 ("KVM: arm64: vgic-debug: Avoid dereferencing NULL ITE pointer"). - Sanitize ESR_EL2 before reporting it to userspace. - Do not do KVM_EXIT_ARM_SEA when SEA is caused by memory allocated to stage-2 translation table. [1] https://cloud.google.com/solutions/sap/docs/manage-host-errors [2] https://lore.kernel.org/kvm/20250109204929.1106563-1-jthoughton@google.com [3] https://lore.kernel.org/kvm/86pljbqqh0.wl-maz@kernel.org [4] https://lore.kernel.org/kvm/20250604050902.3944054-1-jiaqiyan@google.com/ [5] https://lore.kernel.org/kvmarm/20250729182342.3281742-1-oliver.upton@linux.… [6] https://lore.kernel.org/kvm/aHFohmTb9qR_JG1E@linux.dev/#t [7] https://lore.kernel.org/kvm/aHK-DPufhLy5Dtuk@linux.dev/ [8] https://lore.kernel.org/kvm/20250505161412.1926643-1-jiaqiyan@google.com Jiaqi Yan (3): KVM: arm64: VM exit to userspace to handle SEA KVM: selftests: Test for KVM_EXIT_ARM_SEA Documentation: kvm: new UAPI for handling SEA Documentation/virt/kvm/api.rst | 61 ++++ arch/arm64/include/asm/kvm_host.h | 2 + arch/arm64/kvm/arm.c | 5 + arch/arm64/kvm/mmu.c | 68 +++- include/uapi/linux/kvm.h | 10 + tools/arch/arm64/include/asm/esr.h | 2 + tools/testing/selftests/kvm/Makefile.kvm | 1 + .../testing/selftests/kvm/arm64/sea_to_user.c | 327 ++++++++++++++++++ tools/testing/selftests/kvm/lib/kvm_util.c | 1 + 9 files changed, 476 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/arm64/sea_to_user.c -- 2.50.1.565.gc32cd1483b-goog

2 weeks, 1 day

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[PATCH v7 28/28] tracing: selftests: Add pKVM trace remote tests

by Vincent Donnefort

Run the trace remote selftests with the pKVM trace remote "hypervisor". Cc: Shuah Khan <skhan(a)linuxfoundation.org> Cc: linux-kselftest(a)vger.kernel.org Signed-off-by: Vincent Donnefort <vdonnefort(a)google.com> diff --git a/tools/testing/selftests/ftrace/test.d/remotes/pkvm/buffer_size.tc b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/buffer_size.tc new file mode 100644 index 000000000000..2de07e4d72fe --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/buffer_size.tc @@ -0,0 +1,11 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test pkvm hypervisor trace buffer size +# requires: remotes/hypervisor/write_event + +SOURCE_REMOTE_TEST=1 +. $TEST_DIR/remotes/buffer_size.tc + +set -e +setup_remote "hypervisor" +test_buffer_size diff --git a/tools/testing/selftests/ftrace/test.d/remotes/pkvm/reset.tc b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/reset.tc new file mode 100644 index 000000000000..48afc51627e8 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/reset.tc @@ -0,0 +1,11 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test pkvm hypervisor trace buffer reset +# requires: remotes/hypervisor/write_event + +SOURCE_REMOTE_TEST=1 +. $TEST_DIR/remotes/reset.tc + +set -e +setup_remote "hypervisor" +test_reset diff --git a/tools/testing/selftests/ftrace/test.d/remotes/pkvm/trace.tc b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/trace.tc index 49dca7c3861a..00aed1c2e650 100644 --- a/tools/testing/selftests/ftrace/test.d/remotes/pkvm/trace.tc +++ b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/trace.tc @@ -1,9 +1,10 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 -# description: Test pkvm hypervisor tracing pipe +# description: Test pkvm hypervisor non-consuming trace read +# requires: remotes/hypervisor/write_event SOURCE_REMOTE_TEST=1 -. $TEST_DIR/remotes/trace_pipe.tc +. $TEST_DIR/remotes/trace.tc set -e setup_remote "hypervisor" diff --git a/tools/testing/selftests/ftrace/test.d/remotes/pkvm/trace_pipe.tc b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/trace_pipe.tc new file mode 100644 index 000000000000..b63339aca380 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/trace_pipe.tc @@ -0,0 +1,11 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test pkvm hypervisor consuming trace read +# requires: remotes/hypervisor/write_event + +SOURCE_REMOTE_TEST=1 +. $TEST_DIR/remotes/trace_pipe.tc + +set -e +setup_remote "hypervisor" +test_trace_pipe diff --git a/tools/testing/selftests/ftrace/test.d/remotes/pkvm/unloading.tc b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/unloading.tc new file mode 100644 index 000000000000..eb1640a927cc --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/pkvm/unloading.tc @@ -0,0 +1,11 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test pkvm hypervisor trace buffer unloading +# requires: remotes/hypervisor/write_event + +SOURCE_REMOTE_TEST=1 +. $TEST_DIR/remotes/unloading.tc + +set -e +setup_remote "hypervisor" +test_unloading -- 2.51.0.618.g983fd99d29-goog

2 weeks, 1 day

1
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[PATCH v7 15/28] tracing: selftests: Add trace remote tests

by Vincent Donnefort

Exercise the tracefs interface for trace remote with a set of tests to check: * loading/unloading (unloading.tc) * reset (reset.tc) * size changes (buffer_size.tc) * consuming read (trace_pipe.tc) * non-consuming read (trace.tc) Cc: Shuah Khan <skhan(a)linuxfoundation.org> Cc: linux-kselftest(a)vger.kernel.org Signed-off-by: Vincent Donnefort <vdonnefort(a)google.com> diff --git a/tools/testing/selftests/ftrace/test.d/remotes/buffer_size.tc b/tools/testing/selftests/ftrace/test.d/remotes/buffer_size.tc new file mode 100644 index 000000000000..1a43280ffa97 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/buffer_size.tc @@ -0,0 +1,25 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test trace remote buffer size +# requires: remotes/test + +. $TEST_DIR/remotes/functions + +test_buffer_size() +{ + echo 0 > tracing_on + assert_unloaded + + echo 4096 > buffer_size_kb + echo 1 > tracing_on + assert_loaded + + echo 0 > tracing_on + echo 7 > buffer_size_kb +} + +if [ -z "$SOURCE_REMOTE_TEST" ]; then + set -e + setup_remote_test + test_buffer_size +fi diff --git a/tools/testing/selftests/ftrace/test.d/remotes/functions b/tools/testing/selftests/ftrace/test.d/remotes/functions new file mode 100644 index 000000000000..97a09d564a34 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/functions @@ -0,0 +1,88 @@ +# SPDX-License-Identifier: GPL-2.0 + +setup_remote() +{ + local name=$1 + + [ -e $TRACING_DIR/remotes/$name/write_event ] || exit_unresolved + + cd remotes/$name/ + echo 0 > tracing_on + clear_trace + echo 7 > buffer_size_kb + echo 0 > events/enable + echo 1 > events/$name/selftest/enable + echo 1 > tracing_on +} + +setup_remote_test() +{ + [ -d $TRACING_DIR/remotes/test/ ] || modprobe remote_test || exit_unresolved + + setup_remote "test" +} + +assert_loaded() +{ + grep -q "(loaded)" buffer_size_kb +} + +assert_unloaded() +{ + grep -q "(unloaded)" buffer_size_kb +} + +dump_trace_pipe() +{ + output=$(mktemp $TMPDIR/remote_test.XXXXXX) + cat trace_pipe > $output & + pid=$! + sleep 1 + kill -1 $pid + + echo $output +} + +check_trace() +{ + start_id="$1" + end_id="$2" + file="$3" + + # Ensure the file is not empty + test -n "$(head $file)" + + prev_ts=0 + id=0 + + # Only keep <timestamp> <id> + tmp=$(mktemp $TMPDIR/remote_test.XXXXXX) + sed -e 's/\[[0-9]*\]\s*$[0-9]*.[0-9]*$: [a-z]* id=$[0-9]*$/\1 \2/' $file > $tmp + + while IFS= read -r line; do + ts=$(echo $line | cut -d ' ' -f 1) + id=$(echo $line | cut -d ' ' -f 2) + + test $(echo "$ts>$prev_ts" | bc) -eq 1 + test $id -eq $start_id + + prev_ts=$ts + start_id=$((start_id + 1)) + done < $tmp + + test $id -eq $end_id + rm $tmp +} + +get_cpu_ids() +{ + sed -n 's/^processor\s*:\s*$[0-9]\+$.*/\1/p' /proc/cpuinfo +} + +get_page_size() { + sed -ne 's/^.*data.*size:$[0-9][0-9]*$.*/\1/p' events/header_page +} + +get_selftest_event_size() { + sed -ne 's/^.*field:.*;.*size:$[0-9][0-9]*$;.*/\1/p' events/*/selftest/format | awk '{s+=$1} END {print s}' +} diff --git a/tools/testing/selftests/ftrace/test.d/remotes/reset.tc b/tools/testing/selftests/ftrace/test.d/remotes/reset.tc new file mode 100644 index 000000000000..4d176349b2bc --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/reset.tc @@ -0,0 +1,90 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test trace remote reset +# requires: remotes/test + +. $TEST_DIR/remotes/functions + +check_reset() +{ + write_event_path="write_event" + taskset="" + + clear_trace + + # Is the buffer empty? + output=$(dump_trace_pipe) + test $(wc -l $output | cut -d ' ' -f1) -eq 0 + + if $(echo $(pwd) | grep -q "per_cpu/cpu"); then + write_event_path="../../write_event" + cpu_id=$(echo $(pwd) | sed -e 's/.*per_cpu\/cpu//') + taskset="taskset -c $cpu_id" + fi + rm $output + + # Can we properly write a new event? + $taskset echo 7890 > $write_event_path + output=$(dump_trace_pipe) + test $(wc -l $output | cut -d ' ' -f1) -eq 1 + grep -q "id=7890" $output + rm $output +} + +test_global_interface() +{ + output=$(mktemp $TMPDIR/remote_test.XXXXXX) + + # Confidence check + echo 123456 > write_event + output=$(dump_trace_pipe) + grep -q "id=123456" $output + rm $output + + # Reset single event + echo 1 > write_event + check_reset + + # Reset lost events + for i in $(seq 1 10000); do + echo 1 > write_event + done + check_reset +} + +test_percpu_interface() +{ + [ "$(get_cpu_ids | wc -l)" -ge 2 ] || return 0 + + for cpu in $(get_cpu_ids); do + taskset -c $cpu echo 1 > write_event + done + + check_non_empty=0 + for cpu in $(get_cpu_ids); do + cd per_cpu/cpu$cpu/ + + if [ $check_non_empty -eq 0 ]; then + check_reset + check_non_empty=1 + else + # Check we have only reset 1 CPU + output=$(dump_trace_pipe) + test $(wc -l $output | cut -d ' ' -f1) -eq 1 + rm $output + fi + cd - + done +} + +test_reset() +{ + test_global_interface + test_percpu_interface +} + +if [ -z "$SOURCE_REMOTE_TEST" ]; then + set -e + setup_remote_test + test_reset +fi diff --git a/tools/testing/selftests/ftrace/test.d/remotes/trace.tc b/tools/testing/selftests/ftrace/test.d/remotes/trace.tc new file mode 100644 index 000000000000..081133ec45ff --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/trace.tc @@ -0,0 +1,127 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test trace remote non-consuming read +# requires: remotes/test + +. $TEST_DIR/remotes/functions + +test_trace() +{ + echo 0 > tracing_on + assert_unloaded + + echo 7 > buffer_size_kb + echo 1 > tracing_on + assert_loaded + + # Simple test: Emit few events and try to read them + for i in $(seq 1 8); do + echo $i > write_event + done + + check_trace 1 8 trace + + # + # Test interaction with consuming read + # + + cat trace_pipe > /dev/null & + pid=$! + + sleep 1 + kill $pid + + test $(wc -l < trace) -eq 0 + + for i in $(seq 16 32); do + echo $i > write_event + done + + check_trace 16 32 trace + + # + # Test interaction with reset + # + + echo 0 > trace + + test $(wc -l < trace) -eq 0 + + for i in $(seq 1 8); do + echo $i > write_event + done + + check_trace 1 8 trace + + # + # Test interaction with lost events + # + + # Ensure the writer is not on the reader page by reloading the buffer + echo 0 > tracing_on + echo 0 > trace + assert_unloaded + echo 1 > tracing_on + assert_loaded + + # Ensure ring-buffer overflow by emitting events from the same CPU + for cpu in $(get_cpu_ids); do + break + done + + events_per_page=$(($(get_page_size) / $(get_selftest_event_size))) # Approx: does not take TS into account + nr_events=$(($events_per_page * 2)) + for i in $(seq 1 $nr_events); do + taskset -c $cpu echo $i > write_event + done + + id=$(sed -n -e '1s/\[[0-9]*\]\s*[0-9]*.[0-9]*: [a-z]* id=$[0-9]*$/\1/p' trace) + test $id -ne 1 + + check_trace $id $nr_events trace + + # + # Test per-CPU interface + # + echo 0 > trace + + for cpu in $(get_cpu_ids) ; do + taskset -c $cpu echo $cpu > write_event + done + + for cpu in $(get_cpu_ids); do + cd per_cpu/cpu$cpu/ + + check_trace $cpu $cpu trace + + cd - > /dev/null + done + + # + # Test with hotplug + # + + [ "$(get_cpu_ids | wc -l)" -ge 2 ] || return 0 + + echo 0 > trace + + for cpu in $(get_cpu_ids); do + echo 0 > /sys/devices/system/cpu/cpu$cpu/online + break + done + + for i in $(seq 1 8); do + echo $i > write_event + done + + check_trace 1 8 trace + + echo 1 > /sys/devices/system/cpu/cpu$cpu/online +} + +if [ -z "$SOURCE_REMOTE_TEST" ]; then + set -e + + setup_remote_test + test_trace +fi diff --git a/tools/testing/selftests/ftrace/test.d/remotes/trace_pipe.tc b/tools/testing/selftests/ftrace/test.d/remotes/trace_pipe.tc new file mode 100644 index 000000000000..d28eaee10c7c --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/trace_pipe.tc @@ -0,0 +1,127 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test trace remote consuming read +# requires: remotes/test + +. $TEST_DIR/remotes/functions + +test_trace_pipe() +{ + echo 0 > tracing_on + assert_unloaded + + # Emit events from the same CPU + for cpu in $(get_cpu_ids); do + break + done + + # + # Simple test: Emit enough events to fill few pages + # + + echo 1024 > buffer_size_kb + echo 1 > tracing_on + assert_loaded + + events_per_page=$(($(get_page_size) / $(get_selftest_event_size))) + nr_events=$(($events_per_page * 4)) + + output=$(mktemp $TMPDIR/remote_test.XXXXXX) + + cat trace_pipe > $output & + pid=$! + + for i in $(seq 1 $nr_events); do + taskset -c $cpu echo $i > write_event + done + + echo 0 > tracing_on + sleep 1 + kill $pid + + check_trace 1 $nr_events $output + + rm $output + + # + # Test interaction with lost events + # + + assert_unloaded + echo 7 > buffer_size_kb + echo 1 > tracing_on + assert_loaded + + nr_events=$((events_per_page * 2)) + for i in $(seq 1 $nr_events); do + taskset -c $cpu echo $i > write_event + done + + output=$(dump_trace_pipe) + + lost_events=$(sed -n -e '1s/CPU:.*\[LOST $[0-9]*$ EVENTS\]/\1/p' $output) + test -n "$lost_events" + + id=$(sed -n -e '2s/\[[0-9]*\]\s*[0-9]*.[0-9]*: [a-z]* id=$[0-9]*$/\1/p' $output) + test "$id" -eq $(($lost_events + 1)) + + # Drop [LOST EVENTS] line + sed -i '1d' $output + + check_trace $id $nr_events $output + + rm $output + + # + # Test per-CPU interface + # + + echo 0 > trace + echo 1 > tracing_on + + for cpu in $(get_cpu_ids); do + taskset -c $cpu echo $cpu > write_event + done + + for cpu in $(get_cpu_ids); do + cd per_cpu/cpu$cpu/ + output=$(dump_trace_pipe) + + check_trace $cpu $cpu $output + + rm $output + cd - > /dev/null + done + + # + # Test interaction with hotplug + # + + [ "$(get_cpu_ids | wc -l)" -ge 2 ] || return 0 + + echo 0 > trace + + for cpu in $(get_cpu_ids); do + echo 0 > /sys/devices/system/cpu/cpu$cpu/online + break + done + + for i in $(seq 1 8); do + echo $i > write_event + done + + output=$(dump_trace_pipe) + + check_trace 1 8 $output + + rm $output + + echo 1 > /sys/devices/system/cpu/cpu$cpu/online +} + +if [ -z "$SOURCE_REMOTE_TEST" ]; then + set -e + + setup_remote_test + test_trace_pipe +fi diff --git a/tools/testing/selftests/ftrace/test.d/remotes/unloading.tc b/tools/testing/selftests/ftrace/test.d/remotes/unloading.tc new file mode 100644 index 000000000000..cac2190183f6 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/remotes/unloading.tc @@ -0,0 +1,41 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Test trace remote unloading +# requires: remotes/test + +. $TEST_DIR/remotes/functions + +test_unloading() +{ + # No reader, writing + assert_loaded + + # No reader, no writing + echo 0 > tracing_on + assert_unloaded + + # 1 reader, no writing + cat trace_pipe & + pid=$! + sleep 1 + assert_loaded + kill $pid + assert_unloaded + + # No reader, no writing, events + echo 1 > tracing_on + echo 1 > write_event + echo 0 > tracing_on + assert_loaded + + # Test reset + clear_trace + assert_unloaded +} + +if [ -z "$SOURCE_REMOTE_TEST" ]; then + set -e + + setup_remote_test + test_unloading +fi -- 2.51.0.618.g983fd99d29-goog

2 weeks, 1 day

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[PATCH] selftests/bpf: Add -Wsign-compare C compilation flag

by Mehdi Ben Hadj Khelifa

-Change all the source files and the corresponding headers to having matching sign comparisons. Signed-off-by: Mehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa(a)gmail.com> --- As suggested by the TODO, -Wsign-compare was added to the C compilation flags for the selftests/bpf/Makefile and all corresponding files in selftests and a single file under tools/lib/bpf/usdt.bpf.h have been carefully changed to account for correct sign comparisons either by explicit casting or changing the variable type.Only local variables and variables which are in limited scope have been changed in cases where it doesn't break the code.Other struct variables or global ones have left untouched to avoid other conflicts and opted to explicit casting in this case.This change will help avoid implicit type conversions and have predictable behavior. I have already compiled all bpf tests with no errors as well as the kernel and have ran all the selftests with no obvious side effects. I would like to know if it's more convinient to have all changes as a single patch like here or if it needs to be divided in some way and sent as a patch series. Best Regards, Mehdi Ben Hadj Khelifa --- tools/lib/bpf/usdt.bpf.h | 4 ++-- tools/testing/selftests/bpf/Makefile | 4 ++-- tools/testing/selftests/bpf/bpf_arena_htab.h | 2 +- tools/testing/selftests/bpf/progs/arena_list.c | 2 +- .../bpf/progs/bench_local_storage_create.c | 2 +- tools/testing/selftests/bpf/progs/bind_perm.c | 2 +- tools/testing/selftests/bpf/progs/bpf_cc_cubic.c | 2 +- tools/testing/selftests/bpf/progs/bpf_cubic.c | 8 ++++---- .../bpf/progs/bpf_iter_bpf_percpu_array_map.c | 2 +- .../selftests/bpf/progs/bpf_iter_task_stack.c | 2 +- .../testing/selftests/bpf/progs/bpf_iter_tasks.c | 3 ++- .../selftests/bpf/progs/bpf_iter_vma_offset.c | 4 ++-- .../testing/selftests/bpf/progs/bpf_qdisc_fifo.c | 2 +- tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c | 4 ++-- .../bpf/progs/cgroup_getset_retval_getsockopt.c | 6 +++--- .../selftests/bpf/progs/cpumask_success.c | 4 ++-- .../testing/selftests/bpf/progs/dynptr_success.c | 8 ++++---- tools/testing/selftests/bpf/progs/iters.c | 16 ++++++++-------- .../selftests/bpf/progs/kfunc_call_test.c | 2 +- tools/testing/selftests/bpf/progs/linked_list.c | 10 +++++----- tools/testing/selftests/bpf/progs/lsm.c | 2 +- .../testing/selftests/bpf/progs/map_in_map_btf.c | 2 +- tools/testing/selftests/bpf/progs/map_ptr_kern.c | 2 +- .../selftests/bpf/progs/mmap_inner_array.c | 2 +- .../testing/selftests/bpf/progs/mptcp_subflow.c | 2 +- .../selftests/bpf/progs/netif_receive_skb.c | 4 ++-- tools/testing/selftests/bpf/progs/profiler.inc.h | 6 +++--- .../testing/selftests/bpf/progs/rcu_read_lock.c | 4 ++-- .../bpf/progs/sk_storage_omem_uncharge.c | 6 +++--- .../selftests/bpf/progs/sockopt_inherit.c | 4 ++-- tools/testing/selftests/bpf/progs/sockopt_sk.c | 4 ++-- tools/testing/selftests/bpf/progs/strobemeta.h | 2 +- .../selftests/bpf/progs/test_bpf_cookie.c | 2 +- .../testing/selftests/bpf/progs/test_check_mtu.c | 4 ++-- .../selftests/bpf/progs/test_core_extern.c | 2 +- .../testing/selftests/bpf/progs/test_get_xattr.c | 4 ++-- .../selftests/bpf/progs/test_global_func11.c | 2 +- .../selftests/bpf/progs/test_global_func12.c | 2 +- .../selftests/bpf/progs/test_global_func13.c | 2 +- .../selftests/bpf/progs/test_global_func14.c | 2 +- .../selftests/bpf/progs/test_global_func9.c | 2 +- .../selftests/bpf/progs/test_lwt_seg6local.c | 4 ++-- .../testing/selftests/bpf/progs/test_map_init.c | 2 +- .../selftests/bpf/progs/test_parse_tcp_hdr_opt.c | 2 +- .../bpf/progs/test_parse_tcp_hdr_opt_dynptr.c | 2 +- .../selftests/bpf/progs/test_pkt_access.c | 6 +++--- .../testing/selftests/bpf/progs/test_seg6_loop.c | 4 ++-- tools/testing/selftests/bpf/progs/test_skb_ctx.c | 2 +- .../testing/selftests/bpf/progs/test_snprintf.c | 2 +- .../selftests/bpf/progs/test_sockmap_kern.h | 2 +- .../selftests/bpf/progs/test_sockmap_strp.c | 2 +- .../testing/selftests/bpf/progs/test_tc_tunnel.c | 2 +- tools/testing/selftests/bpf/progs/test_xdp.c | 2 +- .../selftests/bpf/progs/test_xdp_dynptr.c | 2 +- .../testing/selftests/bpf/progs/test_xdp_loop.c | 2 +- .../selftests/bpf/progs/test_xdp_noinline.c | 4 ++-- tools/testing/selftests/bpf/progs/udp_limit.c | 2 +- tools/testing/selftests/bpf/progs/uprobe_multi.c | 4 ++-- .../bpf/progs/uprobe_multi_session_recursive.c | 5 +++-- .../selftests/bpf/progs/verifier_arena_large.c | 4 ++-- .../bpf/progs/verifier_iterating_callbacks.c | 2 +- 61 files changed, 105 insertions(+), 103 deletions(-) diff --git a/tools/lib/bpf/usdt.bpf.h b/tools/lib/bpf/usdt.bpf.h index 2a7865c8e3fe..ea20bd4e635d 100644 --- a/tools/lib/bpf/usdt.bpf.h +++ b/tools/lib/bpf/usdt.bpf.h @@ -129,7 +129,7 @@ int bpf_usdt_arg_size(struct pt_regs *ctx, __u64 arg_num) if (arg_num >= BPF_USDT_MAX_ARG_CNT) return -ENOENT; barrier_var(arg_num); - if (arg_num >= spec->arg_cnt) + if (arg_num >= (__u64)spec->arg_cnt) return -ENOENT; arg_spec = &spec->args[arg_num]; @@ -165,7 +165,7 @@ int bpf_usdt_arg(struct pt_regs *ctx, __u64 arg_num, long *res) if (arg_num >= BPF_USDT_MAX_ARG_CNT) return -ENOENT; barrier_var(arg_num); - if (arg_num >= spec->arg_cnt) + if (arg_num >= (__u64)spec->arg_cnt) return -ENOENT; arg_spec = &spec->args[arg_num]; diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 4863106034df..97755e421062 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -453,8 +453,8 @@ BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ -I$(abspath $(OUTPUT)/../usr/include) \ -std=gnu11 \ -fno-strict-aliasing \ - -Wno-compare-distinct-pointer-types -# TODO: enable me -Wsign-compare + -Wno-compare-distinct-pointer-types \ + -Wsign-compare CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) diff --git a/tools/testing/selftests/bpf/bpf_arena_htab.h b/tools/testing/selftests/bpf/bpf_arena_htab.h index acc01a876668..ad77514c3cb1 100644 --- a/tools/testing/selftests/bpf/bpf_arena_htab.h +++ b/tools/testing/selftests/bpf/bpf_arena_htab.h @@ -42,7 +42,7 @@ static hashtab_elem_t *lookup_elem_raw(arena_list_head_t *head, __u32 hash, int hashtab_elem_t *l; list_for_each_entry(l, head, hash_node) - if (l->hash == hash && l->key == key) + if ((__u32)l->hash == hash && l->key == key) return l; return NULL; diff --git a/tools/testing/selftests/bpf/progs/arena_list.c b/tools/testing/selftests/bpf/progs/arena_list.c index 3a2ddcacbea6..02676f77a4cf 100644 --- a/tools/testing/selftests/bpf/progs/arena_list.c +++ b/tools/testing/selftests/bpf/progs/arena_list.c @@ -50,7 +50,7 @@ int arena_list_add(void *ctx) list_head = &global_head; - for (i = zero; i < cnt && can_loop; i++) { + for (i = zero; i < (__u64)cnt && can_loop; i++) { struct elem __arena *n = bpf_alloc(sizeof(*n)); test_val++; diff --git a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c index c8ec0d0368e4..2b23e59bc04a 100644 --- a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c +++ b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c @@ -44,7 +44,7 @@ int BPF_PROG(sched_process_fork, struct task_struct *parent, struct task_struct { struct storage *stg; - if (parent->tgid != bench_pid) + if ((__u32)parent->tgid != bench_pid) return 0; stg = bpf_task_storage_get(&task_storage_map, child, NULL, diff --git a/tools/testing/selftests/bpf/progs/bind_perm.c b/tools/testing/selftests/bpf/progs/bind_perm.c index 7bd2a027025d..e629909c97b6 100644 --- a/tools/testing/selftests/bpf/progs/bind_perm.c +++ b/tools/testing/selftests/bpf/progs/bind_perm.c @@ -7,7 +7,7 @@ #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> -static __always_inline int bind_prog(struct bpf_sock_addr *ctx, int family) +static __always_inline int bind_prog(struct bpf_sock_addr *ctx, __u32 family) { struct bpf_sock *sk; diff --git a/tools/testing/selftests/bpf/progs/bpf_cc_cubic.c b/tools/testing/selftests/bpf/progs/bpf_cc_cubic.c index 1654a530aa3d..942deb5016a6 100644 --- a/tools/testing/selftests/bpf/progs/bpf_cc_cubic.c +++ b/tools/testing/selftests/bpf/progs/bpf_cc_cubic.c @@ -91,7 +91,7 @@ static void tcp_cwnd_reduction(struct sock *sk, int newly_acked_sacked, (__u64)tp->snd_ssthresh * prr_delivered + tp->prior_cwnd - 1; sndcnt = (__u32)div64_u64(dividend, (__u64)tp->prior_cwnd) - tp->prr_out; } else { - sndcnt = max(prr_delivered - tp->prr_out, newly_acked_sacked); + sndcnt = max(prr_delivered - tp->prr_out, (__u32)newly_acked_sacked); if (flag & FLAG_SND_UNA_ADVANCED && !newly_lost) sndcnt++; sndcnt = min(delta, sndcnt); diff --git a/tools/testing/selftests/bpf/progs/bpf_cubic.c b/tools/testing/selftests/bpf/progs/bpf_cubic.c index f089faa97ae6..100937488d2d 100644 --- a/tools/testing/selftests/bpf/progs/bpf_cubic.c +++ b/tools/testing/selftests/bpf/progs/bpf_cubic.c @@ -277,7 +277,7 @@ static void bictcp_update(struct bpf_bictcp *ca, __u32 cwnd, __u32 acked) ca->ack_cnt += acked; /* count the number of ACKed packets */ if (ca->last_cwnd == cwnd && - (__s32)(tcp_jiffies32 - ca->last_time) <= HZ / 32) + (__s32)(tcp_jiffies32 - ca->last_time) <= (__s32)HZ / 32) return; /* The CUBIC function can update ca->cnt at most once per jiffy. @@ -474,7 +474,7 @@ static void hystart_update(struct sock *sk, __u32 delay) if (sk->sk_pacing_status == SK_PACING_NONE) threshold >>= 1; - if ((__s32)(now - ca->round_start) > threshold) { + if ((__s32)(now - ca->round_start) > (__s32)threshold) { ca->found = 1; tp->snd_ssthresh = tp->snd_cwnd; } @@ -512,7 +512,7 @@ void BPF_PROG(bpf_cubic_acked, struct sock *sk, const struct ack_sample *sample) return; /* Discard delay samples right after fast recovery */ - if (ca->epoch_start && (__s32)(tcp_jiffies32 - ca->epoch_start) < HZ) + if (ca->epoch_start && (__s32)(tcp_jiffies32 - ca->epoch_start) < (__s32)HZ) return; delay = sample->rtt_us; @@ -525,7 +525,7 @@ void BPF_PROG(bpf_cubic_acked, struct sock *sk, const struct ack_sample *sample) /* hystart triggers when cwnd is larger than some threshold */ if (!ca->found && tcp_in_slow_start(tp) && hystart && - tp->snd_cwnd >= hystart_low_window) + tp->snd_cwnd >= (__u32)hystart_low_window) hystart_update(sk, delay); } diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c index 9fdea8cd4c6f..0baf00463f35 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c @@ -24,7 +24,7 @@ int dump_bpf_percpu_array_map(struct bpf_iter__bpf_map_elem *ctx) __u32 *key = ctx->key; void *pptr = ctx->value; __u32 step; - int i; + __u32 i; if (key == (void *)0 || pptr == (void *)0) return 0; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c b/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c index f5a309455490..647ec1aa0326 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c @@ -27,7 +27,7 @@ int dump_task_stack(struct bpf_iter__task *ctx) BPF_SEQ_PRINTF(seq, "pid: %8u num_entries: %8u\n", task->pid, retlen / SIZE_OF_ULONG); for (i = 0; i < MAX_STACK_TRACE_DEPTH; i++) { - if (retlen > i * SIZE_OF_ULONG) + if ((__u32)retlen > i * SIZE_OF_ULONG) BPF_SEQ_PRINTF(seq, "[<0>] %pB\n", (void *)entries[i]); } BPF_SEQ_PRINTF(seq, "\n"); diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c b/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c index 966ee5a7b066..704db7589565 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c @@ -115,7 +115,8 @@ int dump_task_sleepable(struct bpf_iter__task *ctx) /* Same length as the string */ ret = bpf_copy_from_user_task_str((char *)task_str2, 10, user_ptr, task, 0); /* only need to do the task pid check once */ - if (bpf_strncmp(task_str2, 10, "test_data\0") != 0 || ret != 10 || task->tgid != pid) { + if (bpf_strncmp(task_str2, 10, "test_data\0") != 0 || ret != 10 || + (__u32)task->tgid != pid) { BPF_SEQ_PRINTF(seq, "%s\n", info); return 0; } diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c b/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c index 174298e122d3..d9088851babf 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c @@ -22,11 +22,11 @@ int get_vma_offset(struct bpf_iter__task_vma *ctx) if (task == NULL || vma == NULL) return 0; - if (last_tgid != task->tgid) + if (last_tgid != (__u32)task->tgid) unique_tgid_cnt++; last_tgid = task->tgid; - if (task->tgid != pid) + if ((__u32)task->tgid != pid) return 0; if (vma->vm_start <= address && vma->vm_end > address) { diff --git a/tools/testing/selftests/bpf/progs/bpf_qdisc_fifo.c b/tools/testing/selftests/bpf/progs/bpf_qdisc_fifo.c index 1de2be3e370b..7a639dcb23a9 100644 --- a/tools/testing/selftests/bpf/progs/bpf_qdisc_fifo.c +++ b/tools/testing/selftests/bpf/progs/bpf_qdisc_fifo.c @@ -88,7 +88,7 @@ void BPF_PROG(bpf_fifo_reset, struct Qdisc *sch) { struct bpf_list_node *node; struct skb_node *skbn; - int i; + __u32 i; bpf_for(i, 0, sch->q.qlen) { struct sk_buff *skb = NULL; diff --git a/tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c b/tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c index 1a3233a275c7..4f80164b5491 100644 --- a/tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c +++ b/tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c @@ -351,7 +351,7 @@ int BPF_PROG(bpf_fq_enqueue, struct sk_buff *skb, struct Qdisc *sch, jiffies = bpf_jiffies64(); if ((s64)(jiffies - (flow_copy->age + q.flow_refill_delay)) > 0) { - if (flow_copy->credit < q.quantum) + if ((__u32)flow_copy->credit < q.quantum) flow_copy->credit = q.quantum; } flow_copy->age = 0; @@ -590,7 +590,7 @@ struct sk_buff *BPF_PROG(bpf_fq_dequeue, struct Qdisc *sch) { struct dequeue_nonprio_ctx cb_ctx = {}; struct sk_buff *skb = NULL; - int i; + __u32 i; if (!sch->q.qlen) goto out; diff --git a/tools/testing/selftests/bpf/progs/cgroup_getset_retval_getsockopt.c b/tools/testing/selftests/bpf/progs/cgroup_getset_retval_getsockopt.c index 932b8ecd4ae3..854dae839f7f 100644 --- a/tools/testing/selftests/bpf/progs/cgroup_getset_retval_getsockopt.c +++ b/tools/testing/selftests/bpf/progs/cgroup_getset_retval_getsockopt.c @@ -22,7 +22,7 @@ int get_retval(struct bpf_sockopt *ctx) __sync_fetch_and_add(&invocations, 1); /* optval larger than PAGE_SIZE use kernel's buffer. */ - if (ctx->optlen > page_size) + if ((__u32)ctx->optlen > page_size) ctx->optlen = 0; return 1; @@ -37,7 +37,7 @@ int set_eisconn(struct bpf_sockopt *ctx) assertion_error = 1; /* optval larger than PAGE_SIZE use kernel's buffer. */ - if (ctx->optlen > page_size) + if ((__u32)ctx->optlen > page_size) ctx->optlen = 0; return 1; @@ -51,7 +51,7 @@ int clear_retval(struct bpf_sockopt *ctx) ctx->retval = 0; /* optval larger than PAGE_SIZE use kernel's buffer. */ - if (ctx->optlen > page_size) + if ((__u32)ctx->optlen > page_size) ctx->optlen = 0; return 1; diff --git a/tools/testing/selftests/bpf/progs/cpumask_success.c b/tools/testing/selftests/bpf/progs/cpumask_success.c index 0e04c31b91c0..c09e290fbdac 100644 --- a/tools/testing/selftests/bpf/progs/cpumask_success.c +++ b/tools/testing/selftests/bpf/progs/cpumask_success.c @@ -221,7 +221,7 @@ int BPF_PROG(test_first_firstzero_cpu, struct task_struct *task, u64 clone_flags if (!cpumask) return 0; - if (bpf_cpumask_first(cast(cpumask)) < nr_cpus) { + if (bpf_cpumask_first(cast(cpumask)) < (__u32)nr_cpus) { err = 3; goto release_exit; } @@ -866,7 +866,7 @@ int BPF_PROG(test_populate, struct task_struct *task, u64 clone_flags) * access NR_CPUS, the upper bound for nr_cpus, so we infer * it from the size of cpumask_t. */ - if (nr_cpus < 0 || nr_cpus >= CPUMASK_TEST_MASKLEN * 8) { + if (nr_cpus < 0 || (__u32)nr_cpus >= CPUMASK_TEST_MASKLEN * 8) { err = 3; goto out; } diff --git a/tools/testing/selftests/bpf/progs/dynptr_success.c b/tools/testing/selftests/bpf/progs/dynptr_success.c index 8315273cb900..a479147c3441 100644 --- a/tools/testing/selftests/bpf/progs/dynptr_success.c +++ b/tools/testing/selftests/bpf/progs/dynptr_success.c @@ -40,7 +40,7 @@ int test_read_write(void *ctx) char write_data[64] = "hello there, world!!"; char read_data[64] = {}; struct bpf_dynptr ptr; - int i; + __u32 i; if (bpf_get_current_pid_tgid() >> 32 != pid) return 0; @@ -114,7 +114,7 @@ int test_dynptr_data(void *ctx) if (err) return 0; - if (val != *(int *)data) + if ((int)val != *(int *)data) err = 5; return 0; @@ -571,7 +571,7 @@ int BPF_PROG(test_dynptr_skb_tp_btf, void *skb, void *location) static inline int bpf_memcmp(const char *a, const char *b, u32 size) { - int i; + __u32 i; bpf_for(i, 0, size) { if (a[i] != b[i]) @@ -882,7 +882,7 @@ static __always_inline void test_dynptr_probe(void *ptr, bpf_read_dynptr_fn_t bp { char buf[sizeof(expected_str)]; struct bpf_dynptr ptr_buf; - int i; + __u32 i; if (bpf_get_current_pid_tgid() >> 32 != pid) return; diff --git a/tools/testing/selftests/bpf/progs/iters.c b/tools/testing/selftests/bpf/progs/iters.c index 7dd92a303bf6..bb896fd7b364 100644 --- a/tools/testing/selftests/bpf/progs/iters.c +++ b/tools/testing/selftests/bpf/progs/iters.c @@ -369,7 +369,7 @@ SEC("raw_tp") __success int iter_array_fill(const void *ctx) { - int sum, i; + __u32 sum, i; MY_PID_GUARD(); @@ -395,7 +395,7 @@ SEC("raw_tp") __success int iter_nested_iters(const void *ctx) { - int sum, row, col; + __u64 sum, row, col; MY_PID_GUARD(); @@ -463,7 +463,7 @@ int iter_nested_deeply_iters(const void *ctx) static __noinline void fill_inner_dimension(int row) { - int col; + __u64 col; bpf_for(col, 0, ARRAY_SIZE(arr2d[0])) { arr2d[row][col] = row * col; @@ -472,7 +472,7 @@ static __noinline void fill_inner_dimension(int row) static __noinline int sum_inner_dimension(int row) { - int sum = 0, col; + __u64 sum = 0, col; bpf_for(col, 0, ARRAY_SIZE(arr2d[0])) { sum += arr2d[row][col]; @@ -487,7 +487,7 @@ SEC("raw_tp") __success int iter_subprog_iters(const void *ctx) { - int sum, row, col; + __u64 sum, row, col; MY_PID_GUARD(); @@ -626,7 +626,7 @@ __success int iter_stack_array_loop(const void *ctx) { long arr1[16], arr2[16], sum = 0; - int i; + __u32 i; MY_PID_GUARD(); @@ -663,7 +663,7 @@ static __noinline void fill(struct bpf_iter_num *it, int *arr, __u32 n, int mul) while ((t = bpf_iter_num_next(it))) { i = *t; - if (i >= n) + if ((__u32)i >= n) break; arr[i] = i * mul; } @@ -1537,7 +1537,7 @@ int iter_arr_with_actual_elem_count(const void *ctx) { int i, n = loop_data.n, sum = 0; - if (n > ARRAY_SIZE(loop_data.data)) + if ((__u64)n > ARRAY_SIZE(loop_data.data)) return 0; bpf_for(i, 0, n) { diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test.c b/tools/testing/selftests/bpf/progs/kfunc_call_test.c index 8b86113a0126..c4e570662b54 100644 --- a/tools/testing/selftests/bpf/progs/kfunc_call_test.c +++ b/tools/testing/selftests/bpf/progs/kfunc_call_test.c @@ -108,7 +108,7 @@ int kfunc_syscall_test(struct syscall_test_args *args) { const long size = args->size; - if (size > sizeof(args->data)) + if ((__u64)size > sizeof(args->data)) return -7; /* -E2BIG */ bpf_kfunc_call_test_mem_len_pass1(&args->data, sizeof(args->data)); diff --git a/tools/testing/selftests/bpf/progs/linked_list.c b/tools/testing/selftests/bpf/progs/linked_list.c index 421f40835acd..d817c8a483f3 100644 --- a/tools/testing/selftests/bpf/progs/linked_list.c +++ b/tools/testing/selftests/bpf/progs/linked_list.c @@ -110,7 +110,7 @@ int list_push_pop_multiple(struct bpf_spin_lock *lock, struct bpf_list_head *hea { struct bpf_list_node *n; struct foo *f[200], *pf; - int i; + __u64 i; /* Loop following this check adds nodes 2-at-a-time in order to * validate multiple release_on_unlock release logic @@ -144,7 +144,7 @@ int list_push_pop_multiple(struct bpf_spin_lock *lock, struct bpf_list_head *hea if (!n) return 3; pf = container_of(n, struct foo, node2); - if (pf->data != (ARRAY_SIZE(f) - i - 1)) { + if ((__u64)pf->data != (ARRAY_SIZE(f) - i - 1)) { bpf_obj_drop(pf); return 4; } @@ -163,7 +163,7 @@ int list_push_pop_multiple(struct bpf_spin_lock *lock, struct bpf_list_head *hea if (!n) return 5; pf = container_of(n, struct foo, node2); - if (pf->data != i) { + if ((__u64)pf->data != i) { bpf_obj_drop(pf); return 6; } @@ -193,7 +193,7 @@ int list_in_list(struct bpf_spin_lock *lock, struct bpf_list_head *head, bool le struct bpf_list_node *n; struct bar *ba[8], *b; struct foo *f; - int i; + __u64 i; f = bpf_obj_new(typeof(*f)); if (!f) @@ -238,7 +238,7 @@ int list_in_list(struct bpf_spin_lock *lock, struct bpf_list_head *head, bool le return 6; } b = container_of(n, struct bar, node); - if (b->data != i) { + if ((__u64)b->data != i) { bpf_obj_drop(f); bpf_obj_drop(b); return 7; diff --git a/tools/testing/selftests/bpf/progs/lsm.c b/tools/testing/selftests/bpf/progs/lsm.c index 0c13b7409947..bb6a4bb6e364 100644 --- a/tools/testing/selftests/bpf/progs/lsm.c +++ b/tools/testing/selftests/bpf/progs/lsm.c @@ -115,7 +115,7 @@ int BPF_PROG(test_void_hook, struct linux_binprm *bprm) __u32 key = 0; __u64 *value; - if (monitored_pid == pid) + if ((__u32)monitored_pid == pid) bprm_count++; bpf_copy_from_user(args, sizeof(args), (void *)bprm->vma->vm_mm->arg_start); diff --git a/tools/testing/selftests/bpf/progs/map_in_map_btf.c b/tools/testing/selftests/bpf/progs/map_in_map_btf.c index 7a1336d7b16a..719368217fe8 100644 --- a/tools/testing/selftests/bpf/progs/map_in_map_btf.c +++ b/tools/testing/selftests/bpf/progs/map_in_map_btf.c @@ -49,7 +49,7 @@ int add_to_list_in_inner_array(void *ctx) struct bpf_map *map; int zero = 0; - if (done || (u32)bpf_get_current_pid_tgid() != pid) + if (done || (__u32)bpf_get_current_pid_tgid() != (__u32)pid) return 0; map = bpf_map_lookup_elem(&outer_array, &zero); diff --git a/tools/testing/selftests/bpf/progs/map_ptr_kern.c b/tools/testing/selftests/bpf/progs/map_ptr_kern.c index efaf622c28dd..310526d06233 100644 --- a/tools/testing/selftests/bpf/progs/map_ptr_kern.c +++ b/tools/testing/selftests/bpf/progs/map_ptr_kern.c @@ -148,7 +148,7 @@ static inline int check_array(void) { struct bpf_array *array = (struct bpf_array *)&m_array; struct bpf_map *map = (struct bpf_map *)&m_array; - int i, n_lookups = 0, n_keys = 0; + __u32 i, n_lookups = 0, n_keys = 0; VERIFY(check_default(&array->map, map)); diff --git a/tools/testing/selftests/bpf/progs/mmap_inner_array.c b/tools/testing/selftests/bpf/progs/mmap_inner_array.c index 90aacbc2938a..90e31cf3a4d3 100644 --- a/tools/testing/selftests/bpf/progs/mmap_inner_array.c +++ b/tools/testing/selftests/bpf/progs/mmap_inner_array.c @@ -38,7 +38,7 @@ int add_to_list_in_inner_array(void *ctx) __u64 *value; curr_pid = (u32)bpf_get_current_pid_tgid(); - if (done || curr_pid != pid) + if (done || curr_pid != (__u32)pid) return 0; pid_match = true; diff --git a/tools/testing/selftests/bpf/progs/mptcp_subflow.c b/tools/testing/selftests/bpf/progs/mptcp_subflow.c index 70302477e326..8af5c2dfc08c 100644 --- a/tools/testing/selftests/bpf/progs/mptcp_subflow.c +++ b/tools/testing/selftests/bpf/progs/mptcp_subflow.c @@ -63,7 +63,7 @@ int mptcp_subflow(struct bpf_sock_ops *skops) static int _check_getsockopt_subflow_mark(struct mptcp_sock *msk, struct bpf_sockopt *ctx) { struct mptcp_subflow_context *subflow; - int i = 0; + __u32 i = 0; mptcp_for_each_subflow(msk, subflow) { struct sock *ssk; diff --git a/tools/testing/selftests/bpf/progs/netif_receive_skb.c b/tools/testing/selftests/bpf/progs/netif_receive_skb.c index 9e067dcbf607..920b884eef01 100644 --- a/tools/testing/selftests/bpf/progs/netif_receive_skb.c +++ b/tools/testing/selftests/bpf/progs/netif_receive_skb.c @@ -35,7 +35,7 @@ static int __strncmp(const void *m1, const void *m2, size_t len) { const unsigned char *s1 = m1; const unsigned char *s2 = m2; - int i, delta = 0; + size_t i, delta = 0; for (i = 0; i < len; i++) { delta = s1[i] - s2[i]; @@ -107,7 +107,7 @@ int BPF_PROG(trace_netif_receive_skb, struct sk_buff *skb) /* Ensure we can write skb string representation */ p.type_id = bpf_core_type_id_kernel(struct sk_buff); p.ptr = skb; - for (i = 0; i < ARRAY_SIZE(flags); i++) { + for (i = 0; (size_t)i < ARRAY_SIZE(flags); i++) { ++num_subtests; ret = bpf_snprintf_btf(str, STRSIZE, &p, sizeof(p), 0); if (ret < 0) diff --git a/tools/testing/selftests/bpf/progs/profiler.inc.h b/tools/testing/selftests/bpf/progs/profiler.inc.h index 813143b4985d..f664f5915169 100644 --- a/tools/testing/selftests/bpf/progs/profiler.inc.h +++ b/tools/testing/selftests/bpf/progs/profiler.inc.h @@ -169,7 +169,7 @@ static INLINE int get_var_spid_index(struct var_kill_data_arr_t* arr_struct, #ifdef UNROLL __pragma_loop_unroll #endif - for (int i = 0; i < ARRAY_SIZE(arr_struct->array); i++) + for (size_t i = 0; i < ARRAY_SIZE(arr_struct->array); i++) if (arr_struct->array[i].meta.pid == spid) return i; return -1; @@ -402,7 +402,7 @@ static INLINE int trace_var_sys_kill(void* ctx, int tpid, int sig) #ifdef UNROLL __pragma_loop_unroll #endif - for (int i = 0; i < ARRAY_SIZE(arr_struct->array); i++) + for (size_t i = 0; i < ARRAY_SIZE(arr_struct->array); i++) if (arr_struct->array[i].meta.pid == 0) { bpf_probe_read_kernel(&arr_struct->array[i], sizeof(arr_struct->array[i]), @@ -629,7 +629,7 @@ int raw_tracepoint__sched_process_exit(void* ctx) #ifdef UNROLL __pragma_loop_unroll #endif - for (int i = 0; i < ARRAY_SIZE(arr_struct->array); i++) { + for (size_t i = 0; i < ARRAY_SIZE(arr_struct->array); i++) { struct var_kill_data_t* past_kill_data = &arr_struct->array[i]; if (past_kill_data != NULL && past_kill_data->kill_target_pid == (pid_t)tpid) { diff --git a/tools/testing/selftests/bpf/progs/rcu_read_lock.c b/tools/testing/selftests/bpf/progs/rcu_read_lock.c index 3a868a199349..38fa039f586b 100644 --- a/tools/testing/selftests/bpf/progs/rcu_read_lock.c +++ b/tools/testing/selftests/bpf/progs/rcu_read_lock.c @@ -34,7 +34,7 @@ int get_cgroup_id(void *ctx) struct css_set *cgroups; task = bpf_get_current_task_btf(); - if (task->pid != target_pid) + if ((__u32)task->pid != target_pid) return 0; /* simulate bpf_get_current_cgroup_id() helper */ @@ -56,7 +56,7 @@ int task_succ(void *ctx) long *ptr; task = bpf_get_current_task_btf(); - if (task->pid != target_pid) + if ((__u32)task->pid != target_pid) return 0; bpf_rcu_read_lock(); diff --git a/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c b/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c index 46d6eb2a3b17..2df842c7e9ed 100644 --- a/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c +++ b/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c @@ -28,7 +28,7 @@ int BPF_PROG(bpf_local_storage_destroy, struct bpf_local_storage *local_storage) return 0; sk = bpf_core_cast(sk_ptr, struct sock); - if (sk->sk_cookie.counter != cookie) + if ((__u64)sk->sk_cookie.counter != cookie) return 0; cookie_found++; @@ -43,11 +43,11 @@ int BPF_PROG(inet6_sock_destruct, struct sock *sk) { int *value; - if (!cookie || sk->sk_cookie.counter != cookie) + if (!cookie || (__u64)sk->sk_cookie.counter != cookie) return 0; value = bpf_sk_storage_get(&sk_storage, sk, 0, 0); - if (value && *value == 0xdeadbeef) { + if (value && (__u32)*value == 0xdeadbeef) { cookie_found++; sk_ptr = sk; local_storage_ptr = sk->sk_bpf_storage; diff --git a/tools/testing/selftests/bpf/progs/sockopt_inherit.c b/tools/testing/selftests/bpf/progs/sockopt_inherit.c index a3434b840928..9f15752af34b 100644 --- a/tools/testing/selftests/bpf/progs/sockopt_inherit.c +++ b/tools/testing/selftests/bpf/progs/sockopt_inherit.c @@ -56,7 +56,7 @@ int _getsockopt(struct bpf_sockopt *ctx) struct sockopt_inherit *storage; __u8 *optval = ctx->optval; - if (ctx->level != SOL_CUSTOM) + if (ctx->level != (__s32)SOL_CUSTOM) goto out; /* only interested in SOL_CUSTOM */ if (optval + 1 > optval_end) @@ -87,7 +87,7 @@ int _setsockopt(struct bpf_sockopt *ctx) struct sockopt_inherit *storage; __u8 *optval = ctx->optval; - if (ctx->level != SOL_CUSTOM) + if (ctx->level != (__s32)SOL_CUSTOM) goto out; /* only interested in SOL_CUSTOM */ if (optval + 1 > optval_end) diff --git a/tools/testing/selftests/bpf/progs/sockopt_sk.c b/tools/testing/selftests/bpf/progs/sockopt_sk.c index cb990a7d3d45..f08529dfb2cb 100644 --- a/tools/testing/selftests/bpf/progs/sockopt_sk.c +++ b/tools/testing/selftests/bpf/progs/sockopt_sk.c @@ -107,7 +107,7 @@ int _getsockopt(struct bpf_sockopt *ctx) return 1; } - if (ctx->level != SOL_CUSTOM) + if (ctx->level != (__s32)SOL_CUSTOM) return 0; /* deny everything except custom level */ if (optval + 1 > optval_end) @@ -212,7 +212,7 @@ int _setsockopt(struct bpf_sockopt *ctx) return 1; } - if (ctx->level != SOL_CUSTOM) + if (ctx->level != (__s32)SOL_CUSTOM) return 0; /* deny everything except custom level */ if (optval + 1 > optval_end) diff --git a/tools/testing/selftests/bpf/progs/strobemeta.h b/tools/testing/selftests/bpf/progs/strobemeta.h index a5c74d31a244..36b4e82abae2 100644 --- a/tools/testing/selftests/bpf/progs/strobemeta.h +++ b/tools/testing/selftests/bpf/progs/strobemeta.h @@ -409,7 +409,7 @@ static __always_inline uint64_t read_map_var(struct strobemeta_cfg *cfg, descr->id = map.id; descr->cnt = map.cnt; - if (cfg->req_meta_idx == idx) { + if (cfg->req_meta_idx == (__s64)idx) { data->req_id = map.id; data->req_meta_valid = 1; } diff --git a/tools/testing/selftests/bpf/progs/test_bpf_cookie.c b/tools/testing/selftests/bpf/progs/test_bpf_cookie.c index c83142b55f47..47e80864b6b8 100644 --- a/tools/testing/selftests/bpf/progs/test_bpf_cookie.c +++ b/tools/testing/selftests/bpf/progs/test_bpf_cookie.c @@ -6,7 +6,7 @@ #include <bpf/bpf_tracing.h> #include <errno.h> -int my_tid; +__u32 my_tid; __u64 kprobe_res; __u64 kprobe_multi_res; diff --git a/tools/testing/selftests/bpf/progs/test_check_mtu.c b/tools/testing/selftests/bpf/progs/test_check_mtu.c index 2ec1de11a3ae..246caea8124f 100644 --- a/tools/testing/selftests/bpf/progs/test_check_mtu.c +++ b/tools/testing/selftests/bpf/progs/test_check_mtu.c @@ -47,7 +47,7 @@ int xdp_use_helper(struct xdp_md *ctx) goto out; } - if (mtu_len != GLOBAL_USER_MTU) + if (mtu_len != (__u32)GLOBAL_USER_MTU) retval = XDP_DROP; out: @@ -165,7 +165,7 @@ int tc_use_helper(struct __sk_buff *ctx) goto out; } - if (mtu_len != GLOBAL_USER_MTU) + if (mtu_len != (__u32)GLOBAL_USER_MTU) retval = BPF_REDIRECT; out: global_bpf_mtu_tc = mtu_len; diff --git a/tools/testing/selftests/bpf/progs/test_core_extern.c b/tools/testing/selftests/bpf/progs/test_core_extern.c index a3c7c1042f35..4eae1eb885f1 100644 --- a/tools/testing/selftests/bpf/progs/test_core_extern.c +++ b/tools/testing/selftests/bpf/progs/test_core_extern.c @@ -37,7 +37,7 @@ uint64_t missing_val = -1; SEC("raw_tp/sys_enter") int handle_sys_enter(struct pt_regs *ctx) { - int i; + __u32 i; kern_ver = LINUX_KERNEL_VERSION; unkn_virt_val = LINUX_UNKNOWN_VIRTUAL_EXTERN; diff --git a/tools/testing/selftests/bpf/progs/test_get_xattr.c b/tools/testing/selftests/bpf/progs/test_get_xattr.c index 54305f4c9f2d..3cda9379a62a 100644 --- a/tools/testing/selftests/bpf/progs/test_get_xattr.c +++ b/tools/testing/selftests/bpf/progs/test_get_xattr.c @@ -42,7 +42,7 @@ int BPF_PROG(test_file_open, struct file *f) bpf_dynptr_from_mem(value1, sizeof(value1), 0, &value_ptr); - for (i = 0; i < ARRAY_SIZE(xattr_names); i++) { + for (i = 0; (__u32)i < ARRAY_SIZE(xattr_names); i++) { ret = bpf_get_file_xattr(f, xattr_names[i], &value_ptr); if (ret == sizeof(expected_value)) break; @@ -68,7 +68,7 @@ int BPF_PROG(test_inode_getxattr, struct dentry *dentry, char *name) bpf_dynptr_from_mem(value2, sizeof(value2), 0, &value_ptr); - for (i = 0; i < ARRAY_SIZE(xattr_names); i++) { + for (i = 0; (__u32)i < ARRAY_SIZE(xattr_names); i++) { ret = bpf_get_dentry_xattr(dentry, xattr_names[i], &value_ptr); if (ret == sizeof(expected_value)) break; diff --git a/tools/testing/selftests/bpf/progs/test_global_func11.c b/tools/testing/selftests/bpf/progs/test_global_func11.c index 283e036dc401..2ad72bf0e07b 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func11.c +++ b/tools/testing/selftests/bpf/progs/test_global_func11.c @@ -5,7 +5,7 @@ #include "bpf_misc.h" struct S { - int x; + __u32 x; }; __noinline int foo(const struct S *s) diff --git a/tools/testing/selftests/bpf/progs/test_global_func12.c b/tools/testing/selftests/bpf/progs/test_global_func12.c index 6e03d42519a6..53eab8ec6772 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func12.c +++ b/tools/testing/selftests/bpf/progs/test_global_func12.c @@ -5,7 +5,7 @@ #include "bpf_misc.h" struct S { - int x; + __u32 x; }; __noinline int foo(const struct S *s) diff --git a/tools/testing/selftests/bpf/progs/test_global_func13.c b/tools/testing/selftests/bpf/progs/test_global_func13.c index 02ea80da75b5..c4afdfc9d92e 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func13.c +++ b/tools/testing/selftests/bpf/progs/test_global_func13.c @@ -5,7 +5,7 @@ #include "bpf_misc.h" struct S { - int x; + __u32 x; }; __noinline int foo(const struct S *s) diff --git a/tools/testing/selftests/bpf/progs/test_global_func14.c b/tools/testing/selftests/bpf/progs/test_global_func14.c index 33b7d5efd7b2..9c494fb39e2f 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func14.c +++ b/tools/testing/selftests/bpf/progs/test_global_func14.c @@ -9,7 +9,7 @@ struct S; __noinline int foo(const struct S *s) { if (s) - return bpf_get_prandom_u32() < *(const int *) s; + return bpf_get_prandom_u32() < *(const __u32 *) s; return 0; } diff --git a/tools/testing/selftests/bpf/progs/test_global_func9.c b/tools/testing/selftests/bpf/progs/test_global_func9.c index 1f2cb0159b8d..9138d9bd08fc 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func9.c +++ b/tools/testing/selftests/bpf/progs/test_global_func9.c @@ -5,7 +5,7 @@ #include "bpf_misc.h" struct S { - int x; + __u32 x; }; struct C { diff --git a/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c b/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c index fed66f36adb6..976af2d3cdda 100644 --- a/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c +++ b/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c @@ -167,7 +167,7 @@ int is_valid_tlv_boundary(struct __sk_buff *skb, struct ip6_srh_t *srh, if (*pad_off == 0) *pad_off = cur_off; - if (*tlv_off == -1) + if (*tlv_off == (__u32)-1) *tlv_off = cur_off; else if (!offset_valid) return -EINVAL; @@ -186,7 +186,7 @@ int add_tlv(struct __sk_buff *skb, struct ip6_srh_t *srh, uint32_t tlv_off, uint32_t partial_srh_len; int err; - if (tlv_off != -1) + if (tlv_off != (__u32)-1) tlv_off += srh_off; if (itlv->type == SR6_TLV_PADDING || itlv->type == SR6_TLV_HMAC) diff --git a/tools/testing/selftests/bpf/progs/test_map_init.c b/tools/testing/selftests/bpf/progs/test_map_init.c index c89d28ead673..311e6ac64588 100644 --- a/tools/testing/selftests/bpf/progs/test_map_init.c +++ b/tools/testing/selftests/bpf/progs/test_map_init.c @@ -22,7 +22,7 @@ int sysenter_getpgid(const void *ctx) /* Just do it for once, when called from our own test prog. This * ensures the map value is only updated for a single CPU. */ - int cur_pid = bpf_get_current_pid_tgid() >> 32; + __u32 cur_pid = bpf_get_current_pid_tgid() >> 32; if (cur_pid == inPid) bpf_map_update_elem(&hashmap1, &inKey, &inValue, BPF_NOEXIST); diff --git a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c index d9b2ba7ac340..4b8ab8716246 100644 --- a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c +++ b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c @@ -102,7 +102,7 @@ int xdp_ingress_v6(struct xdp_md *xdp) opt_state.byte_offset = sizeof(struct tcphdr) + tcp_offset; /* max number of bytes of options in tcp header is 40 bytes */ - for (int i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { + for (__u32 i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { err = parse_hdr_opt(xdp, &opt_state); if (err || !opt_state.hdr_bytes_remaining) diff --git a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c index dc6e43bc6a62..bf3ac5c2938c 100644 --- a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c +++ b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c @@ -100,7 +100,7 @@ int xdp_ingress_v6(struct xdp_md *xdp) off += sizeof(struct tcphdr); /* max number of bytes of options in tcp header is 40 bytes */ - for (int i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { + for (__u32 i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { err = parse_hdr_opt(&ptr, &off, &hdr_bytes_remaining, &server_id); if (err || !hdr_bytes_remaining) diff --git a/tools/testing/selftests/bpf/progs/test_pkt_access.c b/tools/testing/selftests/bpf/progs/test_pkt_access.c index bce7173152c6..39b5a5ba9033 100644 --- a/tools/testing/selftests/bpf/progs/test_pkt_access.c +++ b/tools/testing/selftests/bpf/progs/test_pkt_access.c @@ -130,11 +130,11 @@ int test_pkt_access(struct __sk_buff *skb) tcp = (struct tcphdr *)((void *)(ip6h) + ihl_len); } - if (test_pkt_access_subprog1(skb) != skb->len * 2) + if ((__u32)test_pkt_access_subprog1(skb) != skb->len * 2) return TC_ACT_SHOT; - if (test_pkt_access_subprog2(2, skb) != skb->len * 2) + if ((__u32)test_pkt_access_subprog2(2, skb) != skb->len * 2) return TC_ACT_SHOT; - if (test_pkt_access_subprog3(3, skb) != skb->len * 3 * skb->ifindex) + if ((__u32)test_pkt_access_subprog3(3, skb) != skb->len * 3 * skb->ifindex) return TC_ACT_SHOT; if (tcp) { if (test_pkt_write_access_subprog(skb, (void *)tcp - data)) diff --git a/tools/testing/selftests/bpf/progs/test_seg6_loop.c b/tools/testing/selftests/bpf/progs/test_seg6_loop.c index 5059050f74f6..fccb21d23fe2 100644 --- a/tools/testing/selftests/bpf/progs/test_seg6_loop.c +++ b/tools/testing/selftests/bpf/progs/test_seg6_loop.c @@ -170,7 +170,7 @@ static __always_inline int is_valid_tlv_boundary(struct __sk_buff *skb, if (*pad_off == 0) *pad_off = cur_off; - if (*tlv_off == -1) + if (*tlv_off == (__u32)-1) *tlv_off = cur_off; else if (!offset_valid) return -EINVAL; @@ -189,7 +189,7 @@ static __always_inline int add_tlv(struct __sk_buff *skb, uint32_t partial_srh_len; int err; - if (tlv_off != -1) + if (tlv_off != (__u32)-1) tlv_off += srh_off; if (itlv->type == SR6_TLV_PADDING || itlv->type == SR6_TLV_HMAC) diff --git a/tools/testing/selftests/bpf/progs/test_skb_ctx.c b/tools/testing/selftests/bpf/progs/test_skb_ctx.c index a724a70c6700..7939a2edc414 100644 --- a/tools/testing/selftests/bpf/progs/test_skb_ctx.c +++ b/tools/testing/selftests/bpf/progs/test_skb_ctx.c @@ -11,7 +11,7 @@ SEC("tc") int process(struct __sk_buff *skb) { __pragma_loop_unroll_full - for (int i = 0; i < 5; i++) { + for (__u32 i = 0; i < 5; i++) { if (skb->cb[i] != i + 1) return 1; skb->cb[i]++; diff --git a/tools/testing/selftests/bpf/progs/test_snprintf.c b/tools/testing/selftests/bpf/progs/test_snprintf.c index 8fda07544023..1aa4835da71a 100644 --- a/tools/testing/selftests/bpf/progs/test_snprintf.c +++ b/tools/testing/selftests/bpf/progs/test_snprintf.c @@ -4,7 +4,7 @@ #include <linux/bpf.h> #include <bpf/bpf_helpers.h> -__u32 pid = 0; +int pid = 0; char num_out[64] = {}; long num_ret = 0; diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_kern.h b/tools/testing/selftests/bpf/progs/test_sockmap_kern.h index f48f85f1bd70..2297c83433b7 100644 --- a/tools/testing/selftests/bpf/progs/test_sockmap_kern.h +++ b/tools/testing/selftests/bpf/progs/test_sockmap_kern.h @@ -336,7 +336,7 @@ int bpf_prog9(struct sk_msg_md *msg) bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero); if (bytes) { - if (((__u64)data_end - (__u64)data) >= *bytes) + if (((__u64)data_end - (__u64)data) >= (__u64)*bytes) return SK_PASS; ret = bpf_msg_cork_bytes(msg, *bytes); if (ret) diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_strp.c b/tools/testing/selftests/bpf/progs/test_sockmap_strp.c index dde3d5bec515..e9675c45d8ef 100644 --- a/tools/testing/selftests/bpf/progs/test_sockmap_strp.c +++ b/tools/testing/selftests/bpf/progs/test_sockmap_strp.c @@ -2,7 +2,7 @@ #include <linux/bpf.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> -int verdict_max_size = 10000; +__u32 verdict_max_size = 10000; struct { __uint(type, BPF_MAP_TYPE_SOCKMAP); __uint(max_entries, 20); diff --git a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c index 404124a93892..c7e2d4571a2b 100644 --- a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c +++ b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c @@ -80,7 +80,7 @@ static __always_inline void set_ipv4_csum(struct iphdr *iph) { __u16 *iph16 = (__u16 *)iph; __u32 csum; - int i; + size_t i; iph->check = 0; diff --git a/tools/testing/selftests/bpf/progs/test_xdp.c b/tools/testing/selftests/bpf/progs/test_xdp.c index 8caf58be5818..ce2a9ae26088 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp.c +++ b/tools/testing/selftests/bpf/progs/test_xdp.c @@ -89,7 +89,7 @@ static __always_inline int handle_ipv4(struct xdp_md *xdp) struct vip vip = {}; int dport; __u32 csum = 0; - int i; + size_t i; if (iph + 1 > data_end) return XDP_DROP; diff --git a/tools/testing/selftests/bpf/progs/test_xdp_dynptr.c b/tools/testing/selftests/bpf/progs/test_xdp_dynptr.c index 67a77944ef29..12ad0ec91021 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_dynptr.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_dynptr.c @@ -89,7 +89,7 @@ static __always_inline int handle_ipv4(struct xdp_md *xdp, struct bpf_dynptr *xd struct vip vip = {}; int dport; __u32 csum = 0; - int i; + size_t i; __builtin_memset(eth_buffer, 0, sizeof(eth_buffer)); __builtin_memset(iph_buffer_tcp, 0, sizeof(iph_buffer_tcp)); diff --git a/tools/testing/selftests/bpf/progs/test_xdp_loop.c b/tools/testing/selftests/bpf/progs/test_xdp_loop.c index 93267a68825b..e9b7bbff5c23 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_loop.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_loop.c @@ -85,7 +85,7 @@ static __always_inline int handle_ipv4(struct xdp_md *xdp) struct vip vip = {}; int dport; __u32 csum = 0; - int i; + size_t i; if (iph + 1 > data_end) return XDP_DROP; diff --git a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c index fad94e41cef9..85ef3c0a3e20 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c @@ -372,7 +372,7 @@ bool encap_v4(struct xdp_md *xdp, struct ctl_value *cval, next_iph_u16 = (__u16 *) iph; __pragma_loop_unroll_full - for (int i = 0; i < sizeof(struct iphdr) >> 1; i++) + for (size_t i = 0; i < sizeof(struct iphdr) >> 1; i++) csum += *next_iph_u16++; iph->check = ~((csum & 0xffff) + (csum >> 16)); if (bpf_xdp_adjust_head(xdp, (int)sizeof(struct iphdr))) @@ -423,7 +423,7 @@ int send_icmp_reply(void *data, void *data_end) iph->check = 0; next_iph_u16 = (__u16 *) iph; __pragma_loop_unroll_full - for (int i = 0; i < sizeof(struct iphdr) >> 1; i++) + for (size_t i = 0; i < sizeof(struct iphdr) >> 1; i++) csum += *next_iph_u16++; iph->check = ~((csum & 0xffff) + (csum >> 16)); return swap_mac_and_send(data, data_end); diff --git a/tools/testing/selftests/bpf/progs/udp_limit.c b/tools/testing/selftests/bpf/progs/udp_limit.c index 4767451b59ac..af1b3195ea8a 100644 --- a/tools/testing/selftests/bpf/progs/udp_limit.c +++ b/tools/testing/selftests/bpf/progs/udp_limit.c @@ -50,7 +50,7 @@ int sock_release(struct bpf_sock *ctx) return 1; sk_storage = bpf_sk_storage_get(&sk_map, ctx, 0, 0); - if (!sk_storage || *sk_storage != 0xdeadbeef) + if (!sk_storage || *sk_storage != (int)0xdeadbeef) return 0; __sync_fetch_and_add(&invocations, 1); diff --git a/tools/testing/selftests/bpf/progs/uprobe_multi.c b/tools/testing/selftests/bpf/progs/uprobe_multi.c index 44190efcdba2..f99957773c3a 100644 --- a/tools/testing/selftests/bpf/progs/uprobe_multi.c +++ b/tools/testing/selftests/bpf/progs/uprobe_multi.c @@ -20,13 +20,13 @@ __u64 uretprobe_multi_func_3_result = 0; __u64 uprobe_multi_sleep_result = 0; -int pid = 0; +__u32 pid = 0; int child_pid = 0; int child_tid = 0; int child_pid_usdt = 0; int child_tid_usdt = 0; -int expect_pid = 0; +__u32 expect_pid = 0; bool bad_pid_seen = false; bool bad_pid_seen_usdt = false; diff --git a/tools/testing/selftests/bpf/progs/uprobe_multi_session_recursive.c b/tools/testing/selftests/bpf/progs/uprobe_multi_session_recursive.c index 8fbcd69fae22..017f1859ebe8 100644 --- a/tools/testing/selftests/bpf/progs/uprobe_multi_session_recursive.c +++ b/tools/testing/selftests/bpf/progs/uprobe_multi_session_recursive.c @@ -3,6 +3,7 @@ #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> #include <stdbool.h> +#include <stddef.h> #include "bpf_kfuncs.h" #include "bpf_misc.h" @@ -10,8 +11,8 @@ char _license[] SEC("license") = "GPL"; int pid = 0; -int idx_entry = 0; -int idx_return = 0; +size_t idx_entry = 0; +size_t idx_return = 0; __u64 test_uprobe_cookie_entry[6]; __u64 test_uprobe_cookie_return[3]; diff --git a/tools/testing/selftests/bpf/progs/verifier_arena_large.c b/tools/testing/selftests/bpf/progs/verifier_arena_large.c index 9dbdf123542d..6e1147b83c8b 100644 --- a/tools/testing/selftests/bpf/progs/verifier_arena_large.c +++ b/tools/testing/selftests/bpf/progs/verifier_arena_large.c @@ -86,10 +86,10 @@ int access_reserved(void *ctx) return 1; /* Try to dirty reserved memory. */ - for (i = 0; i < len && can_loop; i++) + for (i = 0; (size_t)i < len && can_loop; i++) *page = 0x5a; - for (i = 0; i < len && can_loop; i++) { + for (i = 0; (size_t)i < len && can_loop; i++) { page = (volatile char __arena *)(base + i * PAGE_SIZE); /* diff --git a/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c b/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c index 75dd922e4e9f..72f9f8c23c93 100644 --- a/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c +++ b/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c @@ -593,7 +593,7 @@ int loop_inside_iter_volatile_limit(const void *ctx) { struct bpf_iter_num it; int *v, sum = 0; - __u64 i = 0; + __s32 i = 0; bpf_iter_num_new(&it, 0, ARR2_SZ); while ((v = bpf_iter_num_next(&it))) { -- 2.51.0

2 weeks, 2 days

4
8
0 0

[PATCH net v6 0/4] net: netpoll: fix memory leak and add comprehensive selftests

by Breno Leitao

Fix a memory leak in netpoll and introduce netconsole selftests that expose the issue when running with kmemleak detection enabled. This patchset includes a selftest for netpoll with multiple concurrent users (netconsole + bonding), which simulates the scenario from test[1] that originally demonstrated the issue allegedly fixed by commit efa95b01da18 ("netpoll: fix use after free") - a commit that is now being reverted. Sending this to "net" branch because this is a fix, and the selftest might help with the backports validation. Link: https://lore.kernel.org/lkml/96b940137a50e5c387687bb4f57de8b0435a653f.14048… [1] Signed-off-by: Breno Leitao <leitao(a)debian.org> --- Changes in v6: - Expand the tests even more and some small fixups - Moved the test to bonding selftests - Link to v5: https://lore.kernel.org/r/20250918-netconsole_torture-v5-0-77e25e0a4eb6@deb… Changes in v5: - Set CONFIG_BONDING=m in selftests/drivers/net/config. - Link to v4: https://lore.kernel.org/r/20250917-netconsole_torture-v4-0-0a5b3b8f81ce@deb… Changes in v4: - Added an additional selftest to test multiple netpoll users in parallel - Link to v3: https://lore.kernel.org/r/20250905-netconsole_torture-v3-0-875c7febd316@deb… Changes in v3: - This patchset is a merge of the fix and the selftest together as recommended by Jakub. Changes in v2: - Reuse the netconsole creation from lib_netcons.sh. Thus, refactoring the create_dynamic_target() (Jakub) - Move the "wait" to after all the messages has been sent. - Link to v1: https://lore.kernel.org/r/20250902-netconsole_torture-v1-1-03c6066598e9@deb… --- Breno Leitao (4): net: netpoll: fix incorrect refcount handling causing incorrect cleanup selftest: netcons: refactor target creation selftest: netcons: create a torture test selftest: netcons: add test for netconsole over bonded interfaces net/core/netpoll.c | 7 +++++-- tools/testing/selftests/drivers/net/Makefile | 1 + tools/testing/selftests/drivers/net/bonding/Makefile | 2 ++ tools/testing/selftests/drivers/net/bonding/config | 4 ++++ tools/testing/selftests/drivers/net/bonding/netcons_over_bonding.sh | 221 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh | 189 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------ tools/testing/selftests/drivers/net/netcons_torture.sh | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 531 insertions(+), 20 deletions(-) --- base-commit: f1455695d2d99894b65db233877acac9a0e120b9 change-id: 20250902-netconsole_torture-8fc23f0aca99 Best regards, -- Breno Leitao <leitao(a)debian.org>

2 weeks, 2 days

1
5
0 0

[PATCH 00/19 5.15.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 19 patches to update minmax.h in the 5.15.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes (6.12.y and 6.6.y were already backported by me and are now aligned, 6.1.y is in progress). The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in kernel 5.10.y. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Andy Shevchenko (1): minmax: deduplicate __unconst_integer_typeof() David Laight (8): minmax: fix indentation of __cmp_once() and __clamp_once() minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Herve Codina (1): minmax: Introduce {min,max}_array() Linus Torvalds (8): minmax: avoid overly complicated constant expressions in VM code minmax: make generic MIN() and MAX() macros available everywhere minmax: add a few more MIN_T/MAX_T users minmax: simplify and clarify min_t()/max_t() implementation minmax: simplify min()/max()/clamp() implementation minmax: don't use max() in situations that want a C constant expression minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too Matthew Wilcox (Oracle) (1): minmax: add in_range() macro arch/arm/mm/pageattr.c | 6 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + .../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../drm/arm/display/include/malidp_utils.h | 2 +- .../display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hwmon/adt7475.c | 24 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 4 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/virt/acrn/ioreq.c | 4 +- fs/btrfs/misc.h | 2 - fs/btrfs/tree-checker.c | 2 +- fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/ufs/util.h | 6 - include/linux/compiler.h | 9 + include/linux/minmax.h | 264 +++++++++++++----- kernel/trace/preemptirq_delay_test.c | 2 - lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - lib/vsprintf.c | 2 +- lib/zstd/zstd_internal.h | 2 - mm/zsmalloc.c | 1 - net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- tools/testing/selftests/vm/mremap_test.c | 2 + 47 files changed, 289 insertions(+), 183 deletions(-) -- 2.47.3

2 weeks, 2 days

1
19
0 0

[PATCH bpf-next v2 0/3] selftests/bpf: benchmark all symbols for kprobe-multi

by Menglong Dong

Add the benchmark testcase "kprobe-multi-all", which will hook all the kernel functions during the testing. This series is separated out from [1]. Changes since V1: * introduce trace_blacklist instead of copy-pasting strcmp in the 2nd patch * use fprintf() instead of printf() in 3rd patch Link: https://lore.kernel.org/bpf/20250817024607.296117-1-dongml2@chinatelecom.cn/ [1] Menglong Dong (3): selftests/bpf: move get_ksyms and get_addrs to trace_helpers.c selftests/bpf: skip recursive functions for kprobe_multi selftests/bpf: add benchmark testing for kprobe-multi-all tools/testing/selftests/bpf/bench.c | 4 + .../selftests/bpf/benchs/bench_trigger.c | 53 ++++ .../selftests/bpf/benchs/run_bench_trigger.sh | 4 +- .../bpf/prog_tests/kprobe_multi_test.c | 220 +--------------- .../selftests/bpf/progs/trigger_bench.c | 12 + tools/testing/selftests/bpf/trace_helpers.c | 234 ++++++++++++++++++ tools/testing/selftests/bpf/trace_helpers.h | 3 + 7 files changed, 311 insertions(+), 219 deletions(-) -- 2.51.0

2 weeks, 2 days

4
8
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[PATCH net] selftests: net: sort configs

by Jakub Kicinski

Sort config files for networking selftests. This should help us avoid merge conflicts between net and net-next. patchwork check will be added to prevent new issues. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: jv(a)jvosburgh.net CC: shuah(a)kernel.org CC: kuniyu(a)google.com CC: matttbe(a)kernel.org CC: martineau(a)kernel.org CC: geliang(a)kernel.org CC: pablo(a)netfilter.org CC: kadlec(a)netfilter.org CC: fw(a)strlen.de CC: phil(a)nwl.cc CC: antonio(a)openvpn.net CC: sd(a)queasysnail.net CC: razor(a)blackwall.org CC: idosch(a)nvidia.com CC: yongwang(a)nvidia.com CC: jiri(a)resnulli.us CC: danishanwar(a)ti.com CC: linux-kselftest(a)vger.kernel.org CC: mptcp(a)lists.linux.dev CC: netfilter-devel(a)vger.kernel.org CC: coreteam(a)netfilter.org --- .../selftests/drivers/net/bonding/config | 8 +- tools/testing/selftests/drivers/net/config | 2 +- tools/testing/selftests/net/af_unix/config | 2 +- tools/testing/selftests/net/config | 140 +++++++++--------- tools/testing/selftests/net/forwarding/config | 34 ++--- tools/testing/selftests/net/hsr/config | 4 +- tools/testing/selftests/net/mptcp/config | 48 +++--- tools/testing/selftests/net/netfilter/config | 58 ++++---- tools/testing/selftests/net/ovpn/config | 12 +- .../testing/selftests/net/packetdrill/config | 4 +- tools/testing/selftests/net/tcp_ao/config | 2 +- 11 files changed, 157 insertions(+), 157 deletions(-) diff --git a/tools/testing/selftests/drivers/net/bonding/config b/tools/testing/selftests/drivers/net/bonding/config index e5b7a8db4dfa..6bb290abd48b 100644 --- a/tools/testing/selftests/drivers/net/bonding/config +++ b/tools/testing/selftests/drivers/net/bonding/config @@ -1,17 +1,17 @@ CONFIG_BONDING=y CONFIG_BRIDGE=y CONFIG_DUMMY=y +CONFIG_INET_ESP=y +CONFIG_INET_ESP_OFFLOAD=y CONFIG_IPV6=y -CONFIG_MACVLAN=y CONFIG_IPVLAN=y +CONFIG_MACVLAN=y CONFIG_NET_ACT_GACT=y CONFIG_NET_CLS_FLOWER=y CONFIG_NET_CLS_MATCHALL=m +CONFIG_NETDEVSIM=m CONFIG_NET_SCH_INGRESS=y CONFIG_NLMON=y CONFIG_VETH=y CONFIG_VLAN_8021Q=m -CONFIG_INET_ESP=y -CONFIG_INET_ESP_OFFLOAD=y CONFIG_XFRM_USER=m -CONFIG_NETDEVSIM=m diff --git a/tools/testing/selftests/drivers/net/config b/tools/testing/selftests/drivers/net/config index 601431248d5b..77ccf83d87e0 100644 --- a/tools/testing/selftests/drivers/net/config +++ b/tools/testing/selftests/drivers/net/config @@ -3,8 +3,8 @@ CONFIG_DEBUG_INFO_BTF=y CONFIG_DEBUG_INFO_BTF_MODULES=n CONFIG_INET_PSP=y CONFIG_IPV6=y -CONFIG_NETDEVSIM=m CONFIG_NETCONSOLE=m CONFIG_NETCONSOLE_DYNAMIC=y CONFIG_NETCONSOLE_EXTENDED_LOG=y +CONFIG_NETDEVSIM=m CONFIG_XDP_SOCKETS=y diff --git a/tools/testing/selftests/net/af_unix/config b/tools/testing/selftests/net/af_unix/config index 37368567768c..b5429c15a53c 100644 --- a/tools/testing/selftests/net/af_unix/config +++ b/tools/testing/selftests/net/af_unix/config @@ -1,3 +1,3 @@ -CONFIG_UNIX=y CONFIG_AF_UNIX_OOB=y +CONFIG_UNIX=y CONFIG_UNIX_DIAG=m diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index d548611e2698..1e1f253118f5 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -1,130 +1,130 @@ -CONFIG_USER_NS=y -CONFIG_NET_NS=y +CONFIG_AMT=m +CONFIG_BAREUDP=m CONFIG_BONDING=m CONFIG_BPF_SYSCALL=y -CONFIG_TEST_BPF=m -CONFIG_NUMA=y -CONFIG_RPS=y -CONFIG_SYSFS=y -CONFIG_PROC_SYSCTL=y -CONFIG_NET_VRF=y -CONFIG_NET_L3_MASTER_DEV=y -CONFIG_IPV6=y -CONFIG_IPV6_MULTIPLE_TABLES=y -CONFIG_VETH=y -CONFIG_NET_IPVTI=y -CONFIG_IPV6_VTI=y -CONFIG_DUMMY=y -CONFIG_BRIDGE_VLAN_FILTERING=y CONFIG_BRIDGE=y +CONFIG_BRIDGE_VLAN_FILTERING=y +CONFIG_CAN=m +CONFIG_CAN_DEV=m +CONFIG_CAN_VXCAN=m +CONFIG_CRYPTO_ARIA=y CONFIG_CRYPTO_CHACHA20POLY1305=m +CONFIG_CRYPTO_SHA1=y +CONFIG_CRYPTO_SM4_GENERIC=y CONFIG_DEBUG_INFO_BTF=y CONFIG_DEBUG_INFO_BTF_MODULES=n -CONFIG_VLAN_8021Q=y +CONFIG_DUMMY=y CONFIG_GENEVE=m CONFIG_IFB=y CONFIG_INET_DIAG=y CONFIG_INET_ESP=y CONFIG_INET_ESP_OFFLOAD=y -CONFIG_CRYPTO_SHA1=y -CONFIG_NET_FOU=y -CONFIG_NET_FOU_IP_TUNNELS=y -CONFIG_NETFILTER=y -CONFIG_NETFILTER_ADVANCED=y -CONFIG_NETFILTER_XTABLES_LEGACY=y -CONFIG_NF_CONNTRACK=m -CONFIG_IPV6_MROUTE=y -CONFIG_IPV6_SIT=y -CONFIG_NF_NAT=m +CONFIG_IP6_NF_FILTER=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_IPTABLES_LEGACY=m -CONFIG_IP_NF_IPTABLES=m -CONFIG_IP_NF_IPTABLES_LEGACY=m CONFIG_IP6_NF_MANGLE=m -CONFIG_IP6_NF_FILTER=m +CONFIG_IP6_NF_MATCH_RPFILTER=m CONFIG_IP6_NF_NAT=m CONFIG_IP6_NF_RAW=m -CONFIG_IP_NF_MANGLE=m +CONFIG_IP6_NF_TARGET_REJECT=m CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_IPTABLES=m +CONFIG_IP_NF_IPTABLES_LEGACY=m +CONFIG_IP_NF_MANGLE=m +CONFIG_IP_NF_MATCH_RPFILTER=m CONFIG_IP_NF_NAT=m CONFIG_IP_NF_RAW=m CONFIG_IP_NF_TARGET_REJECT=m -CONFIG_IP6_NF_TARGET_REJECT=m CONFIG_IP_NF_TARGET_TTL=m +CONFIG_IP_SCTP=m +CONFIG_IPV6=y CONFIG_IPV6_GRE=m +CONFIG_IPV6_ILA=m +CONFIG_IPV6_IOAM6_LWTUNNEL=y +CONFIG_IPV6_MROUTE=y +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_IPV6_RPL_LWTUNNEL=y CONFIG_IPV6_SEG6_LWTUNNEL=y +CONFIG_IPV6_SIT=y +CONFIG_IPV6_VTI=y +CONFIG_IPVLAN=m +CONFIG_KALLSYMS=y +CONFIG_L2TP=m CONFIG_L2TP_ETH=m CONFIG_L2TP_IP=m -CONFIG_L2TP=m CONFIG_L2TP_V3=y CONFIG_MACSEC=m CONFIG_MACVLAN=y CONFIG_MACVTAP=y CONFIG_MPLS=y +CONFIG_MPLS_IPTUNNEL=m +CONFIG_MPLS_ROUTING=m CONFIG_MPTCP=y -CONFIG_NF_TABLES=m -CONFIG_NF_TABLES_IPV6=y -CONFIG_NF_TABLES_IPV4=y -CONFIG_NFT_NAT=m -CONFIG_NETFILTER_XT_MATCH_LENGTH=m -CONFIG_NETFILTER_XT_TARGET_HL=m -CONFIG_NETFILTER_XT_NAT=m CONFIG_NET_ACT_CSUM=m CONFIG_NET_ACT_CT=m CONFIG_NET_ACT_GACT=m +CONFIG_NET_ACT_MIRRED=m CONFIG_NET_ACT_PEDIT=m +CONFIG_NET_ACT_TUNNEL_KEY=m CONFIG_NET_CLS_BASIC=m CONFIG_NET_CLS_BPF=m +CONFIG_NET_CLS_FLOWER=m CONFIG_NET_CLS_MATCHALL=m CONFIG_NET_CLS_U32=m -CONFIG_NET_IPGRE_DEMUX=m +CONFIG_NETDEVSIM=m +CONFIG_NET_DROP_MONITOR=m +CONFIG_NETFILTER=y +CONFIG_NETFILTER_ADVANCED=y +CONFIG_NETFILTER_XTABLES_LEGACY=y +CONFIG_NETFILTER_XT_MATCH_LENGTH=m +CONFIG_NETFILTER_XT_MATCH_POLICY=m +CONFIG_NETFILTER_XT_NAT=m +CONFIG_NETFILTER_XT_TARGET_HL=m +CONFIG_NET_FOU=y +CONFIG_NET_FOU_IP_TUNNELS=y CONFIG_NET_IPGRE=m +CONFIG_NET_IPGRE_DEMUX=m CONFIG_NET_IPIP=y +CONFIG_NET_IPVTI=y +CONFIG_NETKIT=y +CONFIG_NET_L3_MASTER_DEV=y +CONFIG_NET_NS=y +CONFIG_NET_PKTGEN=m +CONFIG_NET_SCH_ETF=m +CONFIG_NET_SCH_FQ=m CONFIG_NET_SCH_FQ_CODEL=m CONFIG_NET_SCH_HTB=m -CONFIG_NET_SCH_FQ=m -CONFIG_NET_SCH_ETF=m +CONFIG_NET_SCH_INGRESS=m CONFIG_NET_SCH_NETEM=y CONFIG_NET_SCH_PRIO=m -CONFIG_NFT_COMPAT=m +CONFIG_NET_VRF=y +CONFIG_NF_CONNTRACK=m CONFIG_NF_CONNTRACK_OVS=y CONFIG_NF_FLOW_TABLE=m +CONFIG_NF_NAT=m +CONFIG_NF_TABLES=m +CONFIG_NF_TABLES_IPV4=y +CONFIG_NF_TABLES_IPV6=y +CONFIG_NFT_COMPAT=m +CONFIG_NFT_NAT=m +CONFIG_NUMA=y CONFIG_OPENVSWITCH=m CONFIG_OPENVSWITCH_GENEVE=m CONFIG_OPENVSWITCH_GRE=m CONFIG_OPENVSWITCH_VXLAN=m +CONFIG_PROC_SYSCTL=y CONFIG_PSAMPLE=m +CONFIG_RPS=y +CONFIG_SYSFS=y CONFIG_TCP_MD5SIG=y CONFIG_TEST_BLACKHOLE_DEV=m -CONFIG_KALLSYMS=y +CONFIG_TEST_BPF=m CONFIG_TLS=m CONFIG_TRACEPOINTS=y -CONFIG_NET_DROP_MONITOR=m -CONFIG_NETDEVSIM=m -CONFIG_MPLS_ROUTING=m -CONFIG_MPLS_IPTUNNEL=m -CONFIG_NET_SCH_INGRESS=m -CONFIG_NET_CLS_FLOWER=m -CONFIG_NET_ACT_TUNNEL_KEY=m -CONFIG_NET_ACT_MIRRED=m -CONFIG_BAREUDP=m -CONFIG_IPV6_IOAM6_LWTUNNEL=y -CONFIG_CRYPTO_SM4_GENERIC=y -CONFIG_AMT=m CONFIG_TUN=y +CONFIG_USER_NS=y +CONFIG_VETH=y +CONFIG_VLAN_8021Q=y CONFIG_VXLAN=m -CONFIG_IP_SCTP=m -CONFIG_NETFILTER_XT_MATCH_POLICY=m -CONFIG_CRYPTO_ARIA=y CONFIG_XFRM_INTERFACE=m CONFIG_XFRM_USER=m -CONFIG_IP_NF_MATCH_RPFILTER=m -CONFIG_IP6_NF_MATCH_RPFILTER=m -CONFIG_IPVLAN=m -CONFIG_CAN=m -CONFIG_CAN_DEV=m -CONFIG_CAN_VXCAN=m -CONFIG_NETKIT=y -CONFIG_NET_PKTGEN=m -CONFIG_IPV6_ILA=m -CONFIG_IPV6_RPL_LWTUNNEL=y diff --git a/tools/testing/selftests/net/forwarding/config b/tools/testing/selftests/net/forwarding/config index 18fd69d8d937..ce64518aaa11 100644 --- a/tools/testing/selftests/net/forwarding/config +++ b/tools/testing/selftests/net/forwarding/config @@ -1,24 +1,23 @@ -CONFIG_BRIDGE=m -CONFIG_VLAN_8021Q=m -CONFIG_BRIDGE_VLAN_FILTERING=y -CONFIG_BRIDGE_IGMP_SNOOPING=y -CONFIG_NET_L3_MASTER_DEV=y -CONFIG_IPV6_MULTIPLE_TABLES=y -CONFIG_NET_VRF=m CONFIG_BPF_SYSCALL=y +CONFIG_BRIDGE=m +CONFIG_BRIDGE_IGMP_SNOOPING=y +CONFIG_BRIDGE_VLAN_FILTERING=y CONFIG_CGROUP_BPF=y CONFIG_DUMMY=m -CONFIG_IPV6=y -CONFIG_IPV6_GRE=m -CONFIG_IPV6_MROUTE=y -CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y -CONFIG_IPV6_PIMSM_V2=y CONFIG_IP_MROUTE=y CONFIG_IP_MROUTE_MULTIPLE_TABLES=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y +CONFIG_IPV6=y +CONFIG_IPV6_GRE=m +CONFIG_IPV6_MROUTE=y +CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_IPV6_PIMSM_V2=y CONFIG_MACVLAN=m +CONFIG_NAMESPACES=y CONFIG_NET_ACT_CT=m +CONFIG_NET_ACT_GACT=m CONFIG_NET_ACT_MIRRED=m CONFIG_NET_ACT_MPLS=m CONFIG_NET_ACT_PEDIT=m @@ -27,29 +26,30 @@ CONFIG_NET_ACT_SAMPLE=m CONFIG_NET_ACT_SKBEDIT=m CONFIG_NET_ACT_TUNNEL_KEY=m CONFIG_NET_ACT_VLAN=m +CONFIG_NET_CLS_BASIC=m CONFIG_NET_CLS_FLOWER=m CONFIG_NET_CLS_MATCHALL=m -CONFIG_NET_CLS_BASIC=m CONFIG_NET_EMATCH=y CONFIG_NET_EMATCH_META=m +CONFIG_NETFILTER=y CONFIG_NET_IPGRE=m CONFIG_NET_IPGRE_DEMUX=m CONFIG_NET_IPIP=m +CONFIG_NET_L3_MASTER_DEV=y +CONFIG_NET_NS=y CONFIG_NET_SCH_ETS=m CONFIG_NET_SCH_INGRESS=m -CONFIG_NET_ACT_GACT=m CONFIG_NET_SCH_PRIO=m CONFIG_NET_SCH_RED=m CONFIG_NET_SCH_TBF=m CONFIG_NET_TC_SKB_EXT=y CONFIG_NET_TEAM=y CONFIG_NET_TEAM_MODE_LOADBALANCE=y -CONFIG_NETFILTER=y +CONFIG_NET_VRF=m CONFIG_NF_CONNTRACK=m CONFIG_NF_FLOW_TABLE=m CONFIG_NF_TABLES=m CONFIG_VETH=m -CONFIG_NAMESPACES=y -CONFIG_NET_NS=y +CONFIG_VLAN_8021Q=m CONFIG_VXLAN=m CONFIG_XFRM_USER=m diff --git a/tools/testing/selftests/net/hsr/config b/tools/testing/selftests/net/hsr/config index 555a868743f0..205cc4d3d64b 100644 --- a/tools/testing/selftests/net/hsr/config +++ b/tools/testing/selftests/net/hsr/config @@ -1,6 +1,6 @@ +CONFIG_BRIDGE=y +CONFIG_HSR=y CONFIG_IPV6=y CONFIG_NET_SCH_NETEM=m -CONFIG_HSR=y CONFIG_VETH=y -CONFIG_BRIDGE=y CONFIG_VLAN_8021Q=m diff --git a/tools/testing/selftests/net/mptcp/config b/tools/testing/selftests/net/mptcp/config index 968d440c03fe..59051ee2a986 100644 --- a/tools/testing/selftests/net/mptcp/config +++ b/tools/testing/selftests/net/mptcp/config @@ -1,36 +1,36 @@ -CONFIG_KALLSYMS=y -CONFIG_MPTCP=y -CONFIG_IPV6=y -CONFIG_MPTCP_IPV6=y CONFIG_INET_DIAG=m CONFIG_INET_MPTCP_DIAG=m -CONFIG_VETH=y -CONFIG_NET_SCH_NETEM=m -CONFIG_SYN_COOKIES=y +CONFIG_IP6_NF_FILTER=m +CONFIG_IP6_NF_TARGET_REJECT=m +CONFIG_IP_ADVANCED_ROUTER=y +CONFIG_IP_MULTIPLE_TABLES=y +CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_MANGLE=m +CONFIG_IP_NF_TARGET_REJECT=m +CONFIG_IPV6=y +CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_KALLSYMS=y +CONFIG_MPTCP=y +CONFIG_MPTCP_IPV6=y +CONFIG_NET_ACT_CSUM=m +CONFIG_NET_ACT_PEDIT=m +CONFIG_NET_CLS_ACT=y +CONFIG_NET_CLS_FW=m CONFIG_NETFILTER=y CONFIG_NETFILTER_ADVANCED=y CONFIG_NETFILTER_NETLINK=m -CONFIG_NF_TABLES=m -CONFIG_NFT_COMPAT=m CONFIG_NETFILTER_XTABLES=m CONFIG_NETFILTER_XTABLES_LEGACY=y CONFIG_NETFILTER_XT_MATCH_BPF=m CONFIG_NETFILTER_XT_MATCH_LENGTH=m CONFIG_NETFILTER_XT_MATCH_STATISTIC=m CONFIG_NETFILTER_XT_TARGET_MARK=m -CONFIG_NF_TABLES_INET=y -CONFIG_NFT_TPROXY=m -CONFIG_NFT_SOCKET=m -CONFIG_IP_ADVANCED_ROUTER=y -CONFIG_IP_MULTIPLE_TABLES=y -CONFIG_IP_NF_FILTER=m -CONFIG_IP_NF_MANGLE=m -CONFIG_IP_NF_TARGET_REJECT=m -CONFIG_IP6_NF_TARGET_REJECT=m -CONFIG_IPV6_MULTIPLE_TABLES=y -CONFIG_IP6_NF_FILTER=m -CONFIG_NET_ACT_CSUM=m -CONFIG_NET_ACT_PEDIT=m -CONFIG_NET_CLS_ACT=y -CONFIG_NET_CLS_FW=m CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NF_TABLES=m +CONFIG_NF_TABLES_INET=y +CONFIG_NFT_COMPAT=m +CONFIG_NFT_SOCKET=m +CONFIG_NFT_TPROXY=m +CONFIG_SYN_COOKIES=y +CONFIG_VETH=y diff --git a/tools/testing/selftests/net/netfilter/config b/tools/testing/selftests/net/netfilter/config index 305e46b819cb..12ce61fa15a8 100644 --- a/tools/testing/selftests/net/netfilter/config +++ b/tools/testing/selftests/net/netfilter/config @@ -1,77 +1,80 @@ CONFIG_AUDIT=y CONFIG_BPF_SYSCALL=y CONFIG_BRIDGE=m -CONFIG_NETFILTER_XTABLES_LEGACY=y -CONFIG_BRIDGE_NF_EBTABLES_LEGACY=m CONFIG_BRIDGE_EBT_BROUTE=m CONFIG_BRIDGE_EBT_IP=m CONFIG_BRIDGE_EBT_REDIRECT=m CONFIG_BRIDGE_EBT_T_FILTER=m CONFIG_BRIDGE_NETFILTER=m CONFIG_BRIDGE_NF_EBTABLES=m +CONFIG_BRIDGE_NF_EBTABLES_LEGACY=m CONFIG_BRIDGE_VLAN_FILTERING=y CONFIG_CGROUP_BPF=y -CONFIG_DUMMY=m -CONFIG_INET_ESP=m CONFIG_CRYPTO_SHA1=m -CONFIG_IP_NF_MATCH_RPFILTER=m -CONFIG_IP6_NF_MATCH_RPFILTER=m -CONFIG_IP_NF_IPTABLES=m -CONFIG_IP_NF_IPTABLES_LEGACY=m +CONFIG_DUMMY=m +CONFIG_INET_DIAG=m +CONFIG_INET_ESP=m +CONFIG_INET_SCTP_DIAG=m +CONFIG_IP6_NF_FILTER=m CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_IPTABLES_LEGACY=m -CONFIG_IP_NF_NAT=m -CONFIG_IP_NF_FILTER=m -CONFIG_IP6_NF_FILTER=m -CONFIG_IP_NF_RAW=m +CONFIG_IP6_NF_MATCH_RPFILTER=m CONFIG_IP6_NF_RAW=m +CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_IPTABLES=m +CONFIG_IP_NF_IPTABLES_LEGACY=m +CONFIG_IP_NF_MATCH_RPFILTER=m +CONFIG_IP_NF_NAT=m +CONFIG_IP_NF_RAW=m CONFIG_IP_SCTP=m +CONFIG_IPV6=y +CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_IP_VS=m CONFIG_IP_VS_PROTO_TCP=y CONFIG_IP_VS_RR=m -CONFIG_IPV6=y -CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_MACVLAN=m CONFIG_NAMESPACES=y CONFIG_NET_CLS_U32=m -CONFIG_NET_L3_MASTER_DEV=y -CONFIG_NET_NS=y -CONFIG_NET_SCH_NETEM=m -CONFIG_NET_SCH_HTB=m -CONFIG_NET_IPIP=m -CONFIG_NET_VRF=y CONFIG_NETFILTER=y CONFIG_NETFILTER_ADVANCED=y CONFIG_NETFILTER_NETLINK=m CONFIG_NETFILTER_NETLINK_QUEUE=m CONFIG_NETFILTER_SYNPROXY=m CONFIG_NETFILTER_XTABLES=m -CONFIG_NETFILTER_XT_NAT=m +CONFIG_NETFILTER_XTABLES_LEGACY=y CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m CONFIG_NETFILTER_XT_MATCH_STATE=m CONFIG_NETFILTER_XT_MATCH_STRING=m +CONFIG_NETFILTER_XT_NAT=m CONFIG_NETFILTER_XT_TARGET_REDIRECT=m +CONFIG_NET_IPIP=m +CONFIG_NET_L3_MASTER_DEV=y +CONFIG_NET_NS=y +CONFIG_NET_PKTGEN=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NET_VRF=y CONFIG_NF_CONNTRACK=m -CONFIG_NF_CONNTRACK_PROCFS=y CONFIG_NF_CONNTRACK_EVENTS=y CONFIG_NF_CONNTRACK_FTP=m CONFIG_NF_CONNTRACK_MARK=y +CONFIG_NF_CONNTRACK_PROCFS=y CONFIG_NF_CONNTRACK_ZONES=y CONFIG_NF_CT_NETLINK=m CONFIG_NF_CT_PROTO_SCTP=y CONFIG_NF_FLOW_TABLE=m +CONFIG_NF_FLOW_TABLE_INET=m CONFIG_NF_LOG_IPV4=m CONFIG_NF_LOG_IPV6=m CONFIG_NF_NAT=m -CONFIG_NF_NAT_REDIRECT=y CONFIG_NF_NAT_MASQUERADE=y +CONFIG_NF_NAT_REDIRECT=y CONFIG_NF_TABLES=m CONFIG_NF_TABLES_BRIDGE=m CONFIG_NF_TABLES_INET=y CONFIG_NF_TABLES_IPV4=y CONFIG_NF_TABLES_IPV6=y CONFIG_NF_TABLES_NETDEV=y -CONFIG_NF_FLOW_TABLE_INET=m CONFIG_NFT_BRIDGE_META=m CONFIG_NFT_COMPAT=m CONFIG_NFT_CT=m @@ -90,12 +93,9 @@ CONFIG_NFT_QUOTA=m CONFIG_NFT_REDIR=m CONFIG_NFT_SYNPROXY=m CONFIG_NFT_TPROXY=m +CONFIG_TUN=m CONFIG_VETH=m CONFIG_VLAN_8021Q=m CONFIG_VXLAN=m -CONFIG_XFRM_USER=m CONFIG_XFRM_STATISTICS=y -CONFIG_NET_PKTGEN=m -CONFIG_TUN=m -CONFIG_INET_DIAG=m -CONFIG_INET_SCTP_DIAG=m +CONFIG_XFRM_USER=m diff --git a/tools/testing/selftests/net/ovpn/config b/tools/testing/selftests/net/ovpn/config index 71946ba9fa17..42699740936d 100644 --- a/tools/testing/selftests/net/ovpn/config +++ b/tools/testing/selftests/net/ovpn/config @@ -1,10 +1,10 @@ -CONFIG_NET=y -CONFIG_INET=y -CONFIG_STREAM_PARSER=y -CONFIG_NET_UDP_TUNNEL=y -CONFIG_DST_CACHE=y CONFIG_CRYPTO=y CONFIG_CRYPTO_AES=y -CONFIG_CRYPTO_GCM=y CONFIG_CRYPTO_CHACHA20POLY1305=y +CONFIG_CRYPTO_GCM=y +CONFIG_DST_CACHE=y +CONFIG_INET=y +CONFIG_NET=y +CONFIG_NET_UDP_TUNNEL=y CONFIG_OVPN=m +CONFIG_STREAM_PARSER=y diff --git a/tools/testing/selftests/net/packetdrill/config b/tools/testing/selftests/net/packetdrill/config index 0237ed98f3c0..c4a19a785521 100644 --- a/tools/testing/selftests/net/packetdrill/config +++ b/tools/testing/selftests/net/packetdrill/config @@ -1,6 +1,6 @@ -CONFIG_IPV6=y -CONFIG_HZ_1000=y CONFIG_HZ=1000 +CONFIG_HZ_1000=y +CONFIG_IPV6=y CONFIG_NET_NS=y CONFIG_NET_SCH_FIFO=y CONFIG_NET_SCH_FQ=y diff --git a/tools/testing/selftests/net/tcp_ao/config b/tools/testing/selftests/net/tcp_ao/config index 3605e38711cb..971cb6fa2d63 100644 --- a/tools/testing/selftests/net/tcp_ao/config +++ b/tools/testing/selftests/net/tcp_ao/config @@ -1,8 +1,8 @@ CONFIG_CRYPTO_HMAC=y CONFIG_CRYPTO_RMD160=y CONFIG_CRYPTO_SHA1=y -CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_IPV6=y +CONFIG_IPV6_MULTIPLE_TABLES=y CONFIG_NET_L3_MASTER_DEV=y CONFIG_NET_VRF=y CONFIG_TCP_AO=y -- 2.51.0

2 weeks, 3 days

5
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Regarding my last email, which you haven't replied to. I need your answer today, either for your personal or for your company/business. Let me know if you're interested

by Filip Jakub

Regarding my last email, which you haven't replied to. I need your answer today, either for your personal or for your company/business. Let me know if you're interested

2 weeks, 3 days

1
0
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[PATCH v 2/2] selftests: riscv: Add test for the Vector ptrace interface

by Yong-Xuan Wang

Add a test case that does some basic verification of the Vector ptrace interface. This forks a child process then using ptrace to inspect and manipulate the v31 register of the child. Signed-off-by: Yong-Xuan Wang <yongxuan.wang(a)sifive.com> --- tools/testing/selftests/riscv/vector/Makefile | 5 +- .../selftests/riscv/vector/vstate_ptrace.c | 132 ++++++++++++++++++ 2 files changed, 136 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/riscv/vector/vstate_ptrace.c diff --git a/tools/testing/selftests/riscv/vector/Makefile b/tools/testing/selftests/riscv/vector/Makefile index 6f7497f4e7b3..45f25e9dd264 100644 --- a/tools/testing/selftests/riscv/vector/Makefile +++ b/tools/testing/selftests/riscv/vector/Makefile @@ -2,7 +2,7 @@ # Copyright (C) 2021 ARM Limited # Originally tools/testing/arm64/abi/Makefile -TEST_GEN_PROGS := v_initval vstate_prctl +TEST_GEN_PROGS := v_initval vstate_prctl vsate_ptrace TEST_GEN_PROGS_EXTENDED := vstate_exec_nolibc v_exec_initval_nolibc include ../../lib.mk @@ -26,3 +26,6 @@ $(OUTPUT)/v_initval: v_initval.c $(OUTPUT)/sys_hwprobe.o $(OUTPUT)/v_helpers.o $(OUTPUT)/v_exec_initval_nolibc: v_exec_initval_nolibc.c $(CC) -nostdlib -static -include ../../../../include/nolibc/nolibc.h \ -Wall $(CFLAGS) $(LDFLAGS) $^ -o $@ -lgcc + +$(OUTPUT)/vstate_ptrace: vstate_ptrace.c $(OUTPUT)/sys_hwprobe.o $(OUTPUT)/v_helpers.o + $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^ diff --git a/tools/testing/selftests/riscv/vector/vstate_ptrace.c b/tools/testing/selftests/riscv/vector/vstate_ptrace.c new file mode 100644 index 000000000000..8a7bcf318e59 --- /dev/null +++ b/tools/testing/selftests/riscv/vector/vstate_ptrace.c @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include <stdio.h> +#include <stdlib.h> +#include <asm/ptrace.h> +#include <linux/elf.h> +#include <sys/ptrace.h> +#include <sys/uio.h> +#include <sys/wait.h> +#include "../../kselftest.h" +#include "v_helpers.h" + +int parent_set_val, child_set_val; + +static long do_ptrace(enum __ptrace_request op, pid_t pid, long type, size_t size, void *data) +{ + struct iovec v_iovec = { + .iov_len = size, + .iov_base = data + }; + + return ptrace(op, pid, type, &v_iovec); +} + +static int do_child(void) +{ + int out; + + if (ptrace(PTRACE_TRACEME, -1, NULL, NULL)) { + ksft_perror("PTRACE_TRACEME failed\n"); + return EXIT_FAILURE; + } + + asm volatile (".option push\n\t" + ".option arch, +v\n\t" + "vsetivli x0, 1, e32, m1, ta, ma\n\t" + "vmv.s.x v31, %[in]\n\t" + "ebreak\n\t" + "vmv.x.s %[out], v31\n\t" + ".option pop\n\t" + : [out] "=r" (out) + : [in] "r" (child_set_val)); + + if (out != parent_set_val) + return EXIT_FAILURE; + + return EXIT_SUCCESS; +} + +static void do_parent(pid_t child) +{ + int status; + void *data = NULL; + + /* Attach to the child */ + while (waitpid(child, &status, 0)) { + if (WIFEXITED(status)) { + ksft_test_result(WEXITSTATUS(status) == 0, "SETREGSET vector\n"); + goto out; + } else if (WIFSTOPPED(status) && (WSTOPSIG(status) == SIGTRAP)) { + size_t size, t; + void *data, *v31; + struct __riscv_v_regset_state *v_regset_hdr; + struct user_regs_struct *gpreg; + + size = sizeof(*v_regset_hdr); + data = malloc(size); + if (!data) + goto out; + v_regset_hdr = (struct __riscv_v_regset_state *)data; + + if (do_ptrace(PTRACE_GETREGSET, child, NT_RISCV_VECTOR, size, data)) + goto out; + + ksft_print_msg("vlenb %ld\n", v_regset_hdr->vlenb); + data = realloc(data, size + v_regset_hdr->vlenb * 32); + if (!data) + goto out; + v31 = (void *)(data + size + v_regset_hdr->vlenb * 31); + size += v_regset_hdr->vlenb * 32; + + if (do_ptrace(PTRACE_GETREGSET, child, NT_RISCV_VECTOR, size, data)) + goto out; + + ksft_test_result(*(int *)v31 == child_set_val, "GETREGSET vector\n"); + + *(int *)v31 = parent_set_val; + if (do_ptrace(PTRACE_SETREGSET, child, NT_RISCV_VECTOR, size, data)) + goto out; + + /* move the pc forward */ + size = sizeof(*gpreg); + data = realloc(data, size); + gpreg = (struct user_regs_struct *)data; + + if (do_ptrace(PTRACE_GETREGSET, child, NT_PRSTATUS, size, data)) + goto out; + + gpreg->pc += 2; + if (do_ptrace(PTRACE_SETREGSET, child, NT_PRSTATUS, size, data)) + goto out; + } + + ptrace(PTRACE_CONT, child, NULL, NULL); + } + +out: + free(data); +} + +int main(void) +{ + pid_t child; + + ksft_set_plan(2); + if (!is_vector_supported() && !is_xtheadvector_supported()) + ksft_exit_skip("Vector not supported\n"); + + srandom(getpid()); + parent_set_val = rand(); + child_set_val = rand(); + + child = fork(); + if (child < 0) + ksft_exit_fail_msg("Fork failed %d\n", child); + + if (!child) + return do_child(); + + do_parent(child); + + ksft_finished(); +} -- 2.43.0

2 weeks, 3 days

3
3
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[GIT PULL] kselftest next update for Linux 6.18-rc1

by Shuah Khan

Hi Linus, Please pull this kselftest next update for Linux 6.18-rc1. - Fixes watchdog test to exit when device doesn't support keep alive - Fix missing header build complaints during out of tree build - A few minor fixes to git ignore - MAINTAINERS file change to update dma_map_benchmark diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit f83ec76bf285bea5727f478a68b894f5543ca76e: Linux 6.17-rc6 (2025-09-14 14:21:14 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-next-6.18-rc1 for you to fetch changes up to 19692013415486febf71343f5cc539a343a2994b: MAINTAINERS: add myself and Barry to dma_map_benchmark maintainers (2025-09-28 14:41:34 -0600) ---------------------------------------------------------------- linux_kselftest-next-6.18-rc1 - Fixes watchdog test to exit when device doesn't support keep alive - Fix missing header build complaints during out of tree build - A few minor fixes to git ignore - MAINTAINERS file change to update dma_map_benchmark ---------------------------------------------------------------- Akhilesh Patil (1): selftests: watchdog: skip ping loop if WDIOF_KEEPALIVEPING not supported Dylan Yudaken (1): selftests/kexec: Ignore selftest binary Qinxin Xia (1): MAINTAINERS: add myself and Barry to dma_map_benchmark maintainers Thomas Weißschuh (1): selftests: always install UAPI headers to the correct directory Yi Lai (1): selftests/kselftest_harness: Add harness-selftest.expected to TEST_FILES MAINTAINERS | 5 +++-- tools/testing/selftests/kexec/.gitignore | 2 ++ tools/testing/selftests/kselftest_harness/Makefile | 1 + tools/testing/selftests/lib.mk | 5 ++++- tools/testing/selftests/watchdog/watchdog-test.c | 6 ++++++ 5 files changed, 16 insertions(+), 3 deletions(-) create mode 100644 tools/testing/selftests/kexec/.gitignore ----------------------------------------------------------------

2 weeks, 3 days

2
1
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[GIT PULL] kunit next update for Linux 6.18-rc1

by Shuah Khan

Hi Linus, Please pull the following kunit next update for Linux 6.18-rc1. A seven patch series adds a new parameterized test features KUnit parameterized tests currently support two primary methods for getting parameters: 1. Defining custom logic within a generate_params() function. 2. Using the KUNIT_ARRAY_PARAM() and KUNIT_ARRAY_PARAM_DESC() macros with a pre-defined static array and passing the created *_gen_params() to KUNIT_CASE_PARAM(). These methods present limitations when dealing with dynamically generated parameter arrays, or in scenarios where populating parameters sequentially via generate_params() is inefficient or overly complex. These limitations are fixed with a parameterized test method. - Fixes issues in kunit build artifacts cleanup, - Fixes parsing skipped test problem in kselftest framework, - Enables PCI on UML without triggering WARN() - a few other fixes and adds support for new configs such as MIPS diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 8f5ae30d69d7543eee0d70083daf4de8fe15d585: Linux 6.17-rc1 (2025-08-10 19:41:16 +0300) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-kunit-6.18-rc1 for you to fetch changes up to 285cae57a51664cc94e85de0ff994f9965b3aca8: kunit: Extend kconfig help text for KUNIT_UML_PCI (2025-09-16 08:27:09 -0600) ---------------------------------------------------------------- linux_kselftest-kunit-6.18-rc1 - A seven patch series adds a new parameterized test features KUnit parameterized tests currently support two primary methods for getting parameters: 1. Defining custom logic within a generate_params() function. 2. Using the KUNIT_ARRAY_PARAM() and KUNIT_ARRAY_PARAM_DESC() macros with a pre-defined static array and passing the created *_gen_params() to KUNIT_CASE_PARAM(). These methods present limitations when dealing with dynamically generated parameter arrays, or in scenarios where populating parameters sequentially via generate_params() is inefficient or overly complex. These limitations are fixed with a parameterized test method. - Fixes issues in kunit build artifacts cleanup, - Fixes parsing skipped test problem in kselftest framework, - Enables PCI on UML without triggering WARN() - a few other fixes and adds support for new configs such as MIPS ---------------------------------------------------------------- David Gow (1): kunit: tool: Accept --raw_output=full as an alias of 'all' Kaibo Ma (1): rust: kunit: allow `cfg` on `test`s Marie Zhussupova (7): kunit: Add parent kunit for parameterized test context kunit: Introduce param_init/exit for parameterized test context management kunit: Pass parameterized test context to generate_params() kunit: Enable direct registration of parameter arrays to a KUnit test kunit: Add example parameterized test with shared resource management using the Resource API kunit: Add example parameterized test with direct dynamic parameter array setup Documentation: kunit: Document new parameterized test features Thomas Weißschuh (5): kunit: Always descend into kunit directory during build kunit: tool: Parse skipped tests from kselftest.h kunit: Enable PCI on UML without triggering WARN() kunit: qemu_configs: Add MIPS configurations kunit: Extend kconfig help text for KUNIT_UML_PCI Documentation/dev-tools/kunit/usage.rst | 342 ++++++++++++++++++++- drivers/gpu/drm/xe/tests/xe_pci.c | 14 +- drivers/gpu/drm/xe/tests/xe_pci_test.h | 9 +- include/kunit/test.h | 95 +++++- kernel/kcsan/kcsan_test.c | 2 +- lib/Makefile | 4 - lib/kunit/Kconfig | 11 + lib/kunit/Makefile | 2 +- lib/kunit/kunit-example-test.c | 217 +++++++++++++ lib/kunit/test.c | 94 +++++- rust/kernel/kunit.rs | 11 + rust/macros/kunit.rs | 48 ++- tools/testing/kunit/configs/arch_uml.config | 5 +- tools/testing/kunit/kunit.py | 4 +- tools/testing/kunit/kunit_parser.py | 8 +- tools/testing/kunit/qemu_configs/mips.py | 18 ++ tools/testing/kunit/qemu_configs/mips64.py | 19 ++ tools/testing/kunit/qemu_configs/mips64el.py | 19 ++ tools/testing/kunit/qemu_configs/mipsel.py | 18 ++ .../test_data/test_is_test_passed-kselftest.log | 3 +- 20 files changed, 880 insertions(+), 63 deletions(-) create mode 100644 tools/testing/kunit/qemu_configs/mips.py create mode 100644 tools/testing/kunit/qemu_configs/mips64.py create mode 100644 tools/testing/kunit/qemu_configs/mips64el.py create mode 100644 tools/testing/kunit/qemu_configs/mipsel.py ----------------------------------------------------------------

2 weeks, 3 days

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[PATCHv3 net 1/2] bonding: fix xfrm offload feature setup on active-backup mode

by Hangbin Liu

The active-backup bonding mode supports XFRM ESP offload. However, when a bond is added using command like `ip link add bond0 type bond mode 1 miimon 100`, the `ethtool -k` command shows that the XFRM ESP offload is disabled. This occurs because, in bond_newlink(), we change bond link first and register bond device later. So the XFRM feature update in bond_option_mode_set() is not called as the bond device is not yet registered, leading to the offload feature not being set successfully. To resolve this issue, we can modify the code order in bond_newlink() to ensure that the bond device is registered first before changing the bond link parameters. This change will allow the XFRM ESP offload feature to be correctly enabled. Fixes: 007ab5345545 ("bonding: fix feature flag setting at init time") Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com> --- v3: rebase to latest net, no code update v2: rebase to latest net, no code update --- drivers/net/bonding/bond_main.c | 2 +- drivers/net/bonding/bond_netlink.c | 16 +++++++++------- include/net/bonding.h | 1 + 3 files changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 57be04f6cb11..f4f0feddd9fa 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4411,7 +4411,7 @@ void bond_work_init_all(struct bonding *bond) INIT_DELAYED_WORK(&bond->slave_arr_work, bond_slave_arr_handler); } -static void bond_work_cancel_all(struct bonding *bond) +void bond_work_cancel_all(struct bonding *bond) { cancel_delayed_work_sync(&bond->mii_work); cancel_delayed_work_sync(&bond->arp_work); diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c index 57fff2421f1b..7a9d73ec8e91 100644 --- a/drivers/net/bonding/bond_netlink.c +++ b/drivers/net/bonding/bond_netlink.c @@ -579,20 +579,22 @@ static int bond_newlink(struct net_device *bond_dev, struct rtnl_newlink_params *params, struct netlink_ext_ack *extack) { + struct bonding *bond = netdev_priv(bond_dev); struct nlattr **data = params->data; struct nlattr **tb = params->tb; int err; - err = bond_changelink(bond_dev, tb, data, extack); - if (err < 0) + err = register_netdevice(bond_dev); + if (err) return err; - err = register_netdevice(bond_dev); - if (!err) { - struct bonding *bond = netdev_priv(bond_dev); + netif_carrier_off(bond_dev); + bond_work_init_all(bond); - netif_carrier_off(bond_dev); - bond_work_init_all(bond); + err = bond_changelink(bond_dev, tb, data, extack); + if (err) { + bond_work_cancel_all(bond); + unregister_netdevice(bond_dev); } return err; diff --git a/include/net/bonding.h b/include/net/bonding.h index e06f0d63b2c1..bd56ad976cfb 100644 --- a/include/net/bonding.h +++ b/include/net/bonding.h @@ -711,6 +711,7 @@ struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave); void bond_slave_arr_work_rearm(struct bonding *bond, unsigned long delay); void bond_work_init_all(struct bonding *bond); +void bond_work_cancel_all(struct bonding *bond); #ifdef CONFIG_PROC_FS void bond_create_proc_entry(struct bonding *bond); -- 2.50.1

2 weeks, 3 days

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[PATCH 1/1] selftest/sched: skip the test if smt is not enabled

by Yifei Liu

The core scheduling is for smt enabled cpus. It is not returns failure and gives plenty of error messages and not clearly points to the smt issue if the smt is disabled. It just mention "not a core sched system" and many other messages. For example: Not a core sched system tid=210574, / tgid=210574 / pgid=210574: ffffffffffffffff Not a core sched system tid=210575, / tgid=210575 / pgid=210574: ffffffffffffffff Not a core sched system tid=210577, / tgid=210575 / pgid=210574: ffffffffffffffff (similar things many other times) In this patch, the test will first read /sys/devices/system/cpu/smt/active, if the file cannot be opened or its value is 0, the test is skipped with an explanatory message. This helps developers understand why it is skipped and avoids unnecessary attention when running the full selftest suite. Signed-off-by: Yifei Liu <yifei.l.liu(a)oracle.com> --- tools/testing/selftests/sched/cs_prctl_test.c | 23 ++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/sched/cs_prctl_test.c b/tools/testing/selftests/sched/cs_prctl_test.c index 52d97fae4dbd..7ce8088cde6a 100644 --- a/tools/testing/selftests/sched/cs_prctl_test.c +++ b/tools/testing/selftests/sched/cs_prctl_test.c @@ -32,6 +32,8 @@ #include <stdlib.h> #include <string.h> +#include "../kselftest.h" + #if __GLIBC_PREREQ(2, 30) == 0 #include <sys/syscall.h> static pid_t gettid(void) @@ -109,6 +111,22 @@ static void handle_usage(int rc, char *msg) exit(rc); } +int check_smt(void) +{ + int c = 0; + FILE *file; + + file = fopen("/sys/devices/system/cpu/smt/active", "r"); + if (!file) + return 0; + c = fgetc(file) - 0x30; + fclose(file); + if (c == 0 || c == 1) + return c; + //if fgetc returns EOF or -1 for correupted files, return 0. + return 0; +} + static unsigned long get_cs_cookie(int pid) { unsigned long long cookie; @@ -271,7 +289,10 @@ int main(int argc, char *argv[]) delay = -1; srand(time(NULL)); - + if (!check_smt()) { + ksft_test_result_skip("smt not enabled\n"); + return 1; + } /* put into separate process group */ if (setpgid(0, 0) != 0) handle_error("process group"); -- 2.50.1

2 weeks, 3 days

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[PATCH net v3] selftest:net: Fix uninit return values

by Sidharth Seela

Fix functions that return undefined values. These issues were caught by running clang using LLVM=1 option; and are as follows: -- ovpn-cli.c:1587:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 1587 | if (!sock) { | ^~~~~ ovpn-cli.c:1635:9: note: uninitialized use occurs here 1635 | return ret; | ^~~ ovpn-cli.c:1587:2: note: remove the 'if' if its condition is always false 1587 | if (!sock) { | ^~~~~~~~~~~~ 1588 | fprintf(stderr, "cannot allocate netlink socket\n"); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1589 | goto err_free; | ~~~~~~~~~~~~~~ 1590 | } | ~ ovpn-cli.c:1584:15: note: initialize the variable 'ret' to silence this warning 1584 | int mcid, ret; | ^ | = 0 ovpn-cli.c:2107:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] 2107 | case CMD_INVALID: | ^~~~~~~~~~~ ovpn-cli.c:2111:9: note: uninitialized use occurs here 2111 | return ret; | ^~~ ovpn-cli.c:1939:12: note: initialize the variable 'ret' to silence this warning 1939 | int n, ret; | ^ | -- Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module") ovpn module") v3: - Use prefix net. - Remove so_txtime fix as default case calls error(). - Changelog before sign-off. - Three dashes after sign-off v2: - Use subsystem name "net". - Add fixes tags. - Remove txtimestamp fix as default case calls error. - Assign constant error string instead of NULL. Signed-off-by: Sidharth Seela <sidharthseela(a)gmail.com> --- diff --git a/tools/testing/selftests/net/ovpn/ovpn-cli.c b/tools/testing/selftests/net/ovpn/ovpn-cli.c index 9201f2905f2c..20d00378f34a 100644 --- a/tools/testing/selftests/net/ovpn/ovpn-cli.c +++ b/tools/testing/selftests/net/ovpn/ovpn-cli.c @@ -1581,7 +1581,7 @@ static int ovpn_listen_mcast(void) { struct nl_sock *sock; struct nl_cb *cb; - int mcid, ret; + int mcid, ret = -1; sock = nl_socket_alloc(); if (!sock) { @@ -1936,7 +1936,7 @@ static int ovpn_run_cmd(struct ovpn_ctx *ovpn) { char peer_id[10], vpnip[INET6_ADDRSTRLEN], laddr[128], lport[10]; char raddr[128], rport[10]; - int n, ret; + int n, ret = -1; FILE *fp; switch (ovpn->cmd) { -- 2.47.3

2 weeks, 3 days

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[PATCH v4 0/7] platform/chrome: Fix a possible UAF via revocable

by Tzung-Bi Shih

This is a follow-up series of [1]. It tries to fix a possible UAF in the fops of cros_ec_chardev after the underlying protocol device has gone by using revocable. The 1st patch introduces the revocable which is an implementation of ideas from the talk [2]. The 2nd and 3rd patches add test cases for revocable in Kunit and selftest. The 4th patch converts existing protocol devices to resource providers of cros_ec_device. The 5th - 7th are PoC patches for moving most revocable code to subsystem level. Miscdevice is used as it would be simpler for PoC. Note that the device driver (e.g., cros_ec_chardev) still needs to be revocable-aware. The driver needs to specify where to save the pointer and thus the resource is available in fops. - The 5th patch adds a helper for using revocable API with fops. - The 6th patch leverages the helper in miscdevice. - The 7th patch converts cros_ec_chardev to a resource consumer of cros_ec_device to fix the UAF. [1] https://lore.kernel.org/chrome-platform/20250721044456.2736300-6-tzungbi@ke… [2] https://lpc.events/event/17/contributions/1627/ v4: - Rebase onto next-20250922. - Remove the 5th patch from v3. - Add fops replacement PoC in 5th - 7th patches. v3: https://lore.kernel.org/chrome-platform/20250912081718.3827390-1-tzungbi@ke… - Rebase onto https://lore.kernel.org/chrome-platform/20250828083601.856083-1-tzungbi@ker… and next-20250912. - The 4th patch changed accordingly. v2: https://lore.kernel.org/chrome-platform/20250820081645.847919-1-tzungbi@ker… - Rename "ref_proxy" -> "revocable". - Add test cases in Kunit and selftest. v1: https://lore.kernel.org/chrome-platform/20250814091020.1302888-1-tzungbi@ke… Tzung-Bi Shih (7): revocable: Revocable resource management revocable: Add Kunit test cases selftests: revocable: Add kselftest cases platform/chrome: Protect cros_ec_device lifecycle with revocable revocable: Add fops replacement char: misc: Leverage revocable fops replacement platform/chrome: cros_ec_chardev: Secure cros_ec_device via revocable .../driver-api/driver-model/index.rst | 1 + .../driver-api/driver-model/revocable.rst | 87 ++++ MAINTAINERS | 9 + drivers/base/Kconfig | 8 + drivers/base/Makefile | 5 +- drivers/base/revocable.c | 374 ++++++++++++++++++ drivers/base/revocable_test.c | 110 ++++++ drivers/char/misc.c | 7 + drivers/platform/chrome/cros_ec.c | 5 + drivers/platform/chrome/cros_ec_chardev.c | 15 +- include/linux/miscdevice.h | 3 + include/linux/platform_data/cros_ec_proto.h | 4 + include/linux/revocable.h | 60 +++ tools/testing/selftests/Makefile | 1 + .../selftests/drivers/base/revocable/Makefile | 7 + .../drivers/base/revocable/revocable_test.c | 116 ++++++ .../drivers/base/revocable/test-revocable.sh | 39 ++ .../base/revocable/test_modules/Makefile | 10 + .../revocable/test_modules/revocable_test.c | 188 +++++++++ 19 files changed, 1047 insertions(+), 2 deletions(-) create mode 100644 Documentation/driver-api/driver-model/revocable.rst create mode 100644 drivers/base/revocable.c create mode 100644 drivers/base/revocable_test.c create mode 100644 include/linux/revocable.h create mode 100644 tools/testing/selftests/drivers/base/revocable/Makefile create mode 100644 tools/testing/selftests/drivers/base/revocable/revocable_test.c create mode 100755 tools/testing/selftests/drivers/base/revocable/test-revocable.sh create mode 100644 tools/testing/selftests/drivers/base/revocable/test_modules/Makefile create mode 100644 tools/testing/selftests/drivers/base/revocable/test_modules/revocable_test.c -- 2.51.0.534.gc79095c0ca-goog

2 weeks, 3 days

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[PATCH net-next 0/8] mptcp: receive path improvement

by Matthieu Baerts (NGI0)

This series includes several changes to the MPTCP RX path. The main goals are improving the RX performances, and increase the long term maintainability. Some changes reflects recent(ish) improvements introduced in the TCP stack: patch 1, 2 and 3 are the MPTCP counter part of SKB deferral free and auto-tuning improvements. Note that patch 3 could possibly fix additional issues, and overall such patch should protect from similar issues to arise in the future. Patches 4-7 are aimed at introducing the socket backlog usage which will be done in a later series to process the packets received by the different subflows while the msk socket is owned. Patch 8 is not related to the RX path, but it contains additional tests for new features recently introduced in net-next. Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- Notes: - Sorry for sending this series that late, we had quite a few patches to upstream during this cycle. This is the last batch, and it has been heavily tested the last 2 weeks. - If there are some issues with some patches, but not with 1-3, it would be nice, if possible, if these 3 first patches can be accepted, to reduce the recently introduced gap with TCP. - Patches can be grouped like this if needed: 1-3, 4-5, 6-7, 8. 6-7 are preparing the ground for future on-going work, they can be dropped if there are issues with them. --- Matthieu Baerts (NGI0) (1): selftests: mptcp: join: validate new laminar endp Paolo Abeni (7): mptcp: leverage skb deferral free tcp: make tcp_rcvbuf_grow() accessible to mptcp code mptcp: rcvbuf auto-tuning improvement mptcp: introduce the mptcp_init_skb helper mptcp: remove unneeded mptcp_move_skb() mptcp: factor out a basic skb coalesce helper mptcp: minor move_skbs_to_msk() cleanup include/net/tcp.h | 1 + net/ipv4/tcp_input.c | 2 +- net/mptcp/protocol.c | 187 ++++++++++++------------ net/mptcp/protocol.h | 4 +- tools/testing/selftests/net/mptcp/mptcp_join.sh | 69 +++++++++ tools/testing/selftests/net/mptcp/pm_nl_ctl.c | 9 ++ 6 files changed, 177 insertions(+), 95 deletions(-) --- base-commit: 1493c18fe8696bfc758a97130a485fc4e08387f5 change-id: 20250927-net-next-mptcp-rcv-path-imp-192d8c24c9c7 Best regards, -- Matthieu Baerts (NGI0) <matttbe(a)kernel.org>

2 weeks, 4 days

4
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[PATCH] KVM: selftests: fix irqfd_test on arm64

by Sebastian Ott

irqfd_test on arm triggers the following assertion: ==== Test Assertion Failure ==== include/kvm_util.h:527: !ret pid=3643 tid=3643 errno=11 - Resource temporarily unavailable 1 0x00000000004026d7: kvm_irqfd at kvm_util.h:527 2 0x0000000000402083: main at irqfd_test.c:100 3 0x0000ffffa5aab587: ?? ??:0 4 0x0000ffffa5aab65f: ?? ??:0 5 0x000000000040236f: _start at ??:? KVM_IRQFD failed, rc: -1 errno: 11 (Resource temporarily unavailable) Fix this by setting up a vgic for the vm. Signed-off-by: Sebastian Ott <sebott(a)redhat.com> --- tools/testing/selftests/kvm/irqfd_test.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/irqfd_test.c b/tools/testing/selftests/kvm/irqfd_test.c index 7c301b4c7005..f7b8766e9d42 100644 --- a/tools/testing/selftests/kvm/irqfd_test.c +++ b/tools/testing/selftests/kvm/irqfd_test.c @@ -8,7 +8,11 @@ #include <stdint.h> #include <sys/sysinfo.h> +#include "processor.h" #include "kvm_util.h" +#ifdef __aarch64__ +#include "vgic.h" +#endif static struct kvm_vm *vm1; static struct kvm_vm *vm2; @@ -86,14 +90,30 @@ static void juggle_eventfd_primary(struct kvm_vm *vm, int eventfd) kvm_irqfd(vm, GSI_BASE_PRIMARY + 1, eventfd, KVM_IRQFD_FLAG_DEASSIGN); } +static struct kvm_vm *test_vm_create(void) +{ +#ifdef __aarch64__ + struct kvm_vm *vm; + struct kvm_vcpu *vcpu; + int gic_fd; + + vm = vm_create_with_one_vcpu(&vcpu, NULL); + gic_fd = vgic_v3_setup(vm, 1, 64); + __TEST_REQUIRE(gic_fd >= 0, "Failed to create vgic-v3"); + + return vm; +#endif + return vm_create(1); +} + int main(int argc, char *argv[]) { pthread_t racing_thread; int r, i; /* Create "full" VMs, as KVM_IRQFD requires an in-kernel IRQ chip. */ - vm1 = vm_create(1); - vm2 = vm_create(1); + vm1 = test_vm_create(); + vm2 = test_vm_create(); WRITE_ONCE(__eventfd, kvm_new_eventfd()); -- 2.51.0

2 weeks, 4 days

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[PATCH net-next] selftests/net: add tcp_port_share to .gitignore

by Gopi Krishna Menon

Add the tcp_port_share test binary to .gitignore to avoid accidentally staging the build artifact. Fixes: 8a8241cdaa34 ("selftests/net: Test tcp port reuse after unbinding a socket") Signed-off-by: Gopi Krishna Menon <krishnagopi487(a)gmail.com> --- tools/testing/selftests/net/.gitignore | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore index 3d4b4a53dfda..439101b518ee 100644 --- a/tools/testing/selftests/net/.gitignore +++ b/tools/testing/selftests/net/.gitignore @@ -52,6 +52,7 @@ tap tcp_fastopen_backup_key tcp_inq tcp_mmap +tcp_port_share tfo timestamping tls -- 2.43.0

2 weeks, 4 days

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selftests: kvm: irqfd_test: KVM_IRQFD failed, rc: -1 errno: 11 (Resource temporarily unavailable)

by Naresh Kamboju

The selftests: kvm: irqfd_test consistently fails across all test platforms since its introduction in Linux next-20250625. The failure occurs due to a KVM_IRQFD ioctl returning errno 11 (Resource temporarily unavailable). This has been observed from day one and is reproducible on all test runs. Reproducibility: 100% failure on all test platforms since next-20250625..next-20250929 Test fails on the below list * graviton4 * rk3399-rock-pi-4b ## Initial Observations: The test is attempting to register an IRQFD but fails with EAGAIN (errno 11). This likely indicates resource exhaustion or unsupported behavior on affected ARM-based platforms. Could you please advise on the way forward for this test? Should we treat this as an unsupported case on ARM platforms, or is there a missing implementation/configuration that needs to be addressed? ## Test log selftests: kvm: irqfd_test Random seed: 0x6b8b4567 ==== Test Assertion Failure ==== include/kvm_util.h:527: !ret pid=721 tid=721 errno=11 - Resource temporarily unavailable 1 0x000000000040250f: kvm_irqfd at kvm_util.h:527 2 0x000000000040222f: main at irqfd_test.c:100 3 0x0000ffffbd43229b: ?? ??:0 4 0x0000ffffbd43237b: ?? ??:0 addr2line: 5 0x000000000040206f: DWARF error: mangled line number section (bad file number) addr2line: DWARF error: mangled line number section (bad file number) _start at ??:? KVM_IRQFD failed, rc: -1 errno: 11 (Resource temporarily unavailable) not ok 4 selftests: kvm: irqfd_test exit=254 ## Links * https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250929/te… * https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250929/te…

2 weeks, 4 days

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[PATCH v2 1/2] selftests/net: add netdevsim.c

by Maksimilijan Marosevic

Tests an edge case in the nsim module where gw_family == AF_UNSPEC. Works by creating a new nsim device and then sending a multipath path message to it and loopback. In unpatched kernels, this triggers a WARN_ON_ONCE in netdevsim/fib.c. Reported-by: syzbot+a259a17220263c2d73fc(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=a259a17220263c2d73fc Fixes: e6f497955fb6 ("ipv6: Check GATEWAY in rtm_to_fib6_multipath_config().") Signed-off-by: Maksimilijan Marosevic <maksimilijan.marosevic(a)proton.me> --- tools/testing/selftests/net/netdevsim.c | 391 ++++++++++++++++++++++++ 1 file changed, 391 insertions(+) create mode 100644 tools/testing/selftests/net/netdevsim.c diff --git a/tools/testing/selftests/net/netdevsim.c b/tools/testing/selftests/net/netdevsim.c new file mode 100644 index 000000000000..cdc8ebef4dac --- /dev/null +++ b/tools/testing/selftests/net/netdevsim.c @@ -0,0 +1,391 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This test creates a new netdevsim device and then sends + * an IPv6 multipath netlink message to it and the loopback + * interface. + * + * This triggers an edge case where the routing table is + * constructed with an entry where gw_family = AF_UNSPEC. + * If not caught, this causes an unexpected nsiblings count + * in netdevsim/fib.c: nsim_fib6_event_init(), raising a + * warning. + * + * NOTE: The warning in question is raised by WARN_ON_ONCE. + * Therefore, this test reports a false negative if the + * warning has already been triggered. + * + */ + +#include <arpa/inet.h> +#include <bits/types/struct_iovec.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> +#include <netinet/in.h> +#include <stdio.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <unistd.h> +#include <dirent.h> +#include <stdbool.h> +#include <net/if.h> + +#define RTF_UP 0x0001 // route usable +#define RTF_HOST 0x0004 // host entry (net otherwise) + +#define NSIM_PORTS 1 +#define NETDEVSIM_DEV_DIR "/sys/bus/netdevsim/devices" +#define NSIM_DEV_DIR_BUFFER_SIZE 128 +#define LO_DEV "lo" + +#define BUFSIZE 4096 +#define DST_PREFIX "2001:db8::" +#define GW1 "fe80::1" +#define GW2 "::1" + +#define PID_LEN 16 + +int get_free_idx(void) +{ + int idx = 0; + int tmp = 0; + DIR *nsim_dir = opendir(NETDEVSIM_DEV_DIR); + struct dirent *entry = NULL; + + if (nsim_dir == NULL) { + fprintf(stderr, "Unable to open nsim directory\n"); + return -1; + } + + do { + entry = readdir(nsim_dir); + if (entry != NULL && + sscanf(entry->d_name, "netdevsim%d", &tmp) > 0) { + if (tmp >= idx) + idx = tmp + 1; + } + } while (entry != NULL); + + closedir(nsim_dir); + return idx; +} + +int create_netdevsim_device(int id, int num_ports) +{ + const char *path = "/sys/bus/netdevsim/new_device"; + char buffer[64]; + int fd; + + fd = open(path, O_WRONLY); + if (fd < 0) { + fprintf(stderr, "Failed to open new_device\n"); + return -1; + } + + snprintf(buffer, sizeof(buffer), "%d %d", id, num_ports); + if (write(fd, buffer, strlen(buffer)) < 0) { + fprintf(stderr, "Failed to write to new_device\n"); + close(fd); + return -1; + } + + close(fd); + return 0; +} + +int ensure_nsim_dev_exists(void) +{ + int ret; + int nsim_idx; + + nsim_idx = get_free_idx(); + ret = create_netdevsim_device(nsim_idx, NSIM_PORTS); + if (ret != 0) { + fprintf(stderr, "Failed to create nsim device\n"); + return -1; + } + + return nsim_idx; +} + +char *get_nsim_dev_link(int nsim_idx) +{ + char nsim_dev_dir_buffer[NSIM_DEV_DIR_BUFFER_SIZE]; + DIR *nsim_dev_dir; + struct dirent *entry; + + sprintf(nsim_dev_dir_buffer, "%s/netdevsim%d/%s", NETDEVSIM_DEV_DIR, + nsim_idx, "net"); + + nsim_dev_dir = opendir(nsim_dev_dir_buffer); + + if (nsim_dev_dir == NULL) { + fprintf(stderr, "Unable to open %s\n", nsim_dev_dir_buffer); + return NULL; + } + + do { + entry = readdir(nsim_dev_dir); + if (entry != NULL && entry->d_name[0] != '.') + break; + + } while (entry != NULL); + + if (entry == NULL || entry->d_name[0] == '.') { + fprintf(stderr, "Device has no ports\n"); + return NULL; + } + + closedir(nsim_dev_dir); + + return entry->d_name; +} + +int get_nsim_dev(char **nsim_link) +{ + int nsim_idx; + char *nsim_dev_link; + + nsim_idx = ensure_nsim_dev_exists(); + if (nsim_idx < 0) + return -1; + + nsim_dev_link = get_nsim_dev_link(nsim_idx); + if (nsim_dev_link == NULL) + return -1; + + *nsim_link = nsim_dev_link; + return 0; +} + +int prepare_socket(void) +{ + struct sockaddr_nl sa; + int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); + + if (fd < 0) { + fprintf(stderr, "Failed to open socket\n"); + return -1; + } + + sa.nl_family = AF_NETLINK; + + if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) + fprintf(stderr, "Failed to bind socket\n"); + + return fd; +} + +struct nlmsghdr *construct_header(char **pos) +{ + struct nlmsghdr *nlh = (struct nlmsghdr *)(*pos); + + nlh->nlmsg_type = RTM_NEWROUTE; + nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_CREATE; + + *pos += NLMSG_HDRLEN; + + return nlh; +} + +void construct_rtmsg(char **pos) +{ + struct rtmsg *rtm = (struct rtmsg *)(*pos); + + rtm->rtm_family = AF_INET6; + rtm->rtm_table = RT_TABLE_MAIN; + rtm->rtm_protocol = RTPROT_STATIC; + rtm->rtm_type = RTN_UNICAST; + rtm->rtm_scope = RT_SCOPE_UNIVERSE; + rtm->rtm_dst_len = 128; + rtm->rtm_flags |= RTF_HOST | RTF_UP; + + *pos += NLMSG_ALIGN(sizeof(struct rtmsg)); +} + +void construct_dest(char **pos) +{ + struct rtattr *rta_dest = (struct rtattr *)(*pos); + struct in6_addr dst6; + + rta_dest->rta_type = RTA_DST; + rta_dest->rta_len = RTA_LENGTH(sizeof(struct in6_addr)); + inet_pton(AF_INET6, DST_PREFIX, &dst6); + memcpy(RTA_DATA(rta_dest), &dst6, sizeof(dst6)); + *pos += RTA_ALIGN(rta_dest->rta_len); +} + +struct rtattr *construct_multipath_hdr(char **pos) +{ + struct rtattr *rta_mp = (struct rtattr *)(*pos); + + rta_mp->rta_type = RTA_MULTIPATH; + *pos += sizeof(struct rtattr); + + return rta_mp; +} + +void add_nexthop(char **pos, int ifindex, char *gw_addr) +{ + struct rtnexthop *rtnh = (struct rtnexthop *)(*pos); + + rtnh->rtnh_hops = 0; + rtnh->rtnh_ifindex = ifindex; + char *rtnh_pos = (char *)rtnh + RTNH_ALIGN(sizeof(struct rtnexthop)); + + struct rtattr *attr = (struct rtattr *)rtnh_pos; + + attr->rta_type = RTA_GATEWAY; + attr->rta_len = RTA_LENGTH(sizeof(struct in6_addr)); + + struct in6_addr gw; + + inet_pton(AF_INET6, gw_addr, &gw); + memcpy(RTA_DATA(attr), &gw, sizeof(gw)); + + rtnh_pos += RTA_ALIGN(attr->rta_len); + rtnh->rtnh_len = rtnh_pos - (char *)rtnh; + + *pos = rtnh_pos; +} + +struct nlmsghdr *construct_message(char *buf, int nsim_ifindex, int lo_ifindex) +{ + char *pos = buf; + struct nlmsghdr *nlh = construct_header(&pos); + + construct_rtmsg(&pos); + construct_dest(&pos); + + struct rtattr *rta_mp = construct_multipath_hdr(&pos); + + add_nexthop(&pos, nsim_ifindex, GW1); + add_nexthop(&pos, lo_ifindex, GW2); + + rta_mp->rta_len = pos - (char *)rta_mp; + nlh->nlmsg_len = pos - buf; + + return nlh; +} + +int send_nl_msg(struct nlmsghdr *nlh, int socket) +{ + struct iovec iov = { .iov_base = nlh, .iov_len = nlh->nlmsg_len }; + struct msghdr msg = { + .msg_iov = &iov, + .msg_iovlen = 1, + }; + + if (sendmsg(socket, (struct msghdr *)&msg, 0) < 0) { + fprintf(stderr, "Failed to send message\n"); + return 1; + } + + return 0; +} + +int open_kmsg(void) +{ + int fd = open("/dev/kmsg", O_RDONLY | O_NONBLOCK); + + if (fd < 0) { + fprintf(stderr, "Failed to open kmsg\n"); + return -1; + } + + return fd; +} + +int move_cursor_to_end(int fd) +{ + if (lseek(fd, 0, SEEK_END) == -1) { + fprintf(stderr, "Failed to lseek kmsg\n"); + return -1; + } + + return 0; +} + +int look_for_warn(int kmsg_fd) +{ + char buffer[1024]; + int bytes_read; + int pid = getpid(); + char pid_str[PID_LEN]; + + snprintf(pid_str, PID_LEN, "%d", pid); + + while ((bytes_read = read(kmsg_fd, buffer, sizeof(buffer) - 1)) > 0) { + buffer[bytes_read] = '\0'; + if (strstr(buffer, "WARNING") && strstr(buffer, pid_str)) { + printf("Kernel warning detected\n"); + return 1; + } + } + + return 0; +} + +int main(void) +{ + char *nsim_dev; + int if_lo, if_nsim; + int fd; + int kmsg_fd; + struct nlmsghdr *nlh; + char buf[BUFSIZE]; + + if (get_nsim_dev(&nsim_dev) != 0) + return EXIT_FAILURE; + + sleep(1); // Doesn't work without a delay + + if_lo = if_nametoindex(LO_DEV); + if_nsim = if_nametoindex(nsim_dev); + + if (!if_lo || !if_nsim) { + fprintf(stderr, "Failed to get interface index\n"); + return EXIT_FAILURE; + } + + memset(buf, 0, sizeof(buf)); + nlh = construct_message(buf, if_nsim, if_lo); + + fd = prepare_socket(); + if (fd < 0) { + fprintf(stderr, "Failed to open socket\n"); + close(fd); + return EXIT_FAILURE; + } + + kmsg_fd = open_kmsg(); + if (kmsg_fd < 0) { + fprintf(stderr, "Failed to open kmsg\n"); + close(fd); + return EXIT_FAILURE; + } + + if (move_cursor_to_end(kmsg_fd) < 0) { + fprintf(stderr, "Failed to open kmsg\n"); + close(fd); + close(kmsg_fd); + return EXIT_FAILURE; + } + + if (send_nl_msg(nlh, fd) != 0) { + close(fd); + close(kmsg_fd); + return EXIT_FAILURE; + } + + if (look_for_warn(kmsg_fd) != 0) { + close(fd); + close(kmsg_fd); + return EXIT_FAILURE; + } + + close(kmsg_fd); + close(fd); + return EXIT_SUCCESS; +} -- 2.43.0

2 weeks, 4 days

2
1
0 0

[PATCH net-next v3 0/8] psp: add a kselftest suite and netdevsim implementation

by Jakub Kicinski

Add a basic test suite for drivers that support PSP. Also, add a PSP implementation in the netdevsim driver. The netdevsim implementation does encapsulation and decapsulation of PSP packets, but no crypto. The tests cover the basic usage of the uapi, and demonstrate key exchange and connection setup. The tests and netdevsim support IPv4 and IPv6. Here is an example run on a system with a CX7 NIC. TAP version 13 1..28 ok 1 psp.data_basic_send_v0_ip4 ok 2 psp.data_basic_send_v0_ip6 ok 3 psp.data_basic_send_v1_ip4 ok 4 psp.data_basic_send_v1_ip6 ok 5 psp.data_basic_send_v2_ip4 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-128') ok 6 psp.data_basic_send_v2_ip6 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-128') ok 7 psp.data_basic_send_v3_ip4 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-256') ok 8 psp.data_basic_send_v3_ip6 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-256') ok 9 psp.data_mss_adjust_ip4 ok 10 psp.data_mss_adjust_ip6 ok 11 psp.dev_list_devices ok 12 psp.dev_get_device ok 13 psp.dev_get_device_bad ok 14 psp.dev_rotate ok 15 psp.dev_rotate_spi ok 16 psp.assoc_basic ok 17 psp.assoc_bad_dev ok 18 psp.assoc_sk_only_conn ok 19 psp.assoc_sk_only_mismatch ok 20 psp.assoc_sk_only_mismatch_tx ok 21 psp.assoc_sk_only_unconn ok 22 psp.assoc_version_mismatch ok 23 psp.assoc_twice ok 24 psp.data_send_bad_key ok 25 psp.data_send_disconnect ok 26 psp.data_stale_key ok 27 psp.removal_device_rx # XFAIL Test only works on netdevsim ok 28 psp.removal_device_bi # XFAIL Test only works on netdevsim # Totals: pass:22 fail:0 xfail:2 xpass:0 skip:4 error:0 # # Responder logs (0): # STDERR: # Set PSP enable on device 1 to 0x3 # Set PSP enable on device 1 to 0x0 v3: - fix netdevsim bugs - rework the skipping - use errno - remove duplicated condition v2: https://lore.kernel.org/20250925211647.3450332-1-daniel.zahka@gmail.com - fix pylint warnings - insert CONFIG_INET_PSP in alphebetical order - use branch to skip all tests - fix compilation error when CONFIG_INET_PSP is not set v1: https://lore.kernel.org/20250924194959.2845473-1-daniel.zahka@gmail.com Jakub Kicinski (8): netdevsim: a basic test PSP implementation selftests: drv-net: base device access API test selftests: drv-net: add PSP responder selftests: drv-net: psp: add basic data transfer and key rotation tests selftests: drv-net: psp: add association tests selftests: drv-net: psp: add connection breaking tests selftests: drv-net: psp: add test for auto-adjusting TCP MSS selftests: drv-net: psp: add tests for destroying devices drivers/net/netdevsim/Makefile | 4 + tools/testing/selftests/drivers/net/Makefile | 10 + drivers/net/netdevsim/netdevsim.h | 27 + drivers/net/netdevsim/netdev.c | 43 +- drivers/net/netdevsim/psp.c | 225 +++++++ net/core/skbuff.c | 1 + .../selftests/drivers/net/psp_responder.c | 483 ++++++++++++++ .../testing/selftests/drivers/net/.gitignore | 1 + tools/testing/selftests/drivers/net/config | 1 + .../drivers/net/hw/lib/py/__init__.py | 4 +- .../selftests/drivers/net/lib/py/__init__.py | 4 +- .../selftests/drivers/net/lib/py/env.py | 4 + tools/testing/selftests/drivers/net/psp.py | 627 ++++++++++++++++++ .../testing/selftests/net/lib/py/__init__.py | 2 +- tools/testing/selftests/net/lib/py/ksft.py | 10 + tools/testing/selftests/net/lib/py/ynl.py | 5 + 16 files changed, 1440 insertions(+), 11 deletions(-) create mode 100644 drivers/net/netdevsim/psp.c create mode 100644 tools/testing/selftests/drivers/net/psp_responder.c create mode 100755 tools/testing/selftests/drivers/net/psp.py -- 2.51.0

2 weeks, 4 days

4
16
0 0

[PATCH net v5] selftest:net: Fix uninit return values

by Sidharth Seela

Fix functions that return undefined values. These issues were caught by running clang using LLVM=1 option. Clang warnings are as follows: ovpn-cli.c:1587:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 1587 | if (!sock) { | ^~~~~ ovpn-cli.c:1635:9: note: uninitialized use occurs here 1635 | return ret; | ^~~ ovpn-cli.c:1587:2: note: remove the 'if' if its condition is always false 1587 | if (!sock) { | ^~~~~~~~~~~~ 1588 | fprintf(stderr, "cannot allocate netlink socket\n"); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1589 | goto err_free; | ~~~~~~~~~~~~~~ 1590 | } | ~ ovpn-cli.c:1584:15: note: initialize the variable 'ret' to silence this warning 1584 | int mcid, ret; | ^ | = 0 ovpn-cli.c:2107:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] 2107 | case CMD_INVALID: | ^~~~~~~~~~~ ovpn-cli.c:2111:9: note: uninitialized use occurs here 2111 | return ret; | ^~~ ovpn-cli.c:1939:12: note: initialize the variable 'ret' to silence this warning 1939 | int n, ret; | ^ | Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module") ovpn module") Signed-off-by: Sidharth Seela <sidharthseela(a)gmail.com> --- v5: - Assign -ENOMEM to ret inside if block. - Assign -EINVAL to ret inside case block. v4: - Move changelog below sign-off. - Remove double-hyphens in commit description. v3: - Use prefix net. - Remove so_txtime fix as default case calls error(). - Changelog before sign-off. - Three dashes after sign-off v2: - Use subsystem name "net". - Add fixes tags. - Remove txtimestamp fix as default case calls error. - Assign constant error string instead of NULL. diff --git a/tools/testing/selftests/net/ovpn/ovpn-cli.c b/tools/testing/selftests/net/ovpn/ovpn-cli.c index 9201f2905f2c..8d0f2f61923c 100644 --- a/tools/testing/selftests/net/ovpn/ovpn-cli.c +++ b/tools/testing/selftests/net/ovpn/ovpn-cli.c @@ -1586,6 +1586,7 @@ static int ovpn_listen_mcast(void) sock = nl_socket_alloc(); if (!sock) { fprintf(stderr, "cannot allocate netlink socket\n"); + ret = -ENOMEM; goto err_free; } @@ -2105,6 +2106,7 @@ static int ovpn_run_cmd(struct ovpn_ctx *ovpn) ret = ovpn_listen_mcast(); break; case CMD_INVALID: + ret = -EINVAL; break; } -- 2.47.3

2 weeks, 4 days

3
3
0 0

[PATCH net v4] selftest:net: Fix uninit return values

by Sidharth Seela

Fix functions that return undefined values. These issues were caught by running clang using LLVM=1 option. Clang warnings are as follows: ovpn-cli.c:1587:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 1587 | if (!sock) { | ^~~~~ ovpn-cli.c:1635:9: note: uninitialized use occurs here 1635 | return ret; | ^~~ ovpn-cli.c:1587:2: note: remove the 'if' if its condition is always false 1587 | if (!sock) { | ^~~~~~~~~~~~ 1588 | fprintf(stderr, "cannot allocate netlink socket\n"); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1589 | goto err_free; | ~~~~~~~~~~~~~~ 1590 | } | ~ ovpn-cli.c:1584:15: note: initialize the variable 'ret' to silence this warning 1584 | int mcid, ret; | ^ | = 0 ovpn-cli.c:2107:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] 2107 | case CMD_INVALID: | ^~~~~~~~~~~ ovpn-cli.c:2111:9: note: uninitialized use occurs here 2111 | return ret; | ^~~ ovpn-cli.c:1939:12: note: initialize the variable 'ret' to silence this warning 1939 | int n, ret; | ^ | Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module") ovpn module") Signed-off-by: Sidharth Seela <sidharthseela(a)gmail.com> --- v4: - Move changelog below sign-off. - Remove double-hyphens in commit description. v3: - Use prefix net. - Remove so_txtime fix as default case calls error(). - Changelog before sign-off. - Three dashes after sign-off v2: - Use subsystem name "net". - Add fixes tags. - Remove txtimestamp fix as default case calls error. - Assign constant error string instead of NULL. diff --git a/tools/testing/selftests/net/ovpn/ovpn-cli.c b/tools/testing/selftests/net/ovpn/ovpn-cli.c index 9201f2905f2c..20d00378f34a 100644 --- a/tools/testing/selftests/net/ovpn/ovpn-cli.c +++ b/tools/testing/selftests/net/ovpn/ovpn-cli.c @@ -1581,7 +1581,7 @@ static int ovpn_listen_mcast(void) { struct nl_sock *sock; struct nl_cb *cb; - int mcid, ret; + int mcid, ret = -1; sock = nl_socket_alloc(); if (!sock) { @@ -1936,7 +1936,7 @@ static int ovpn_run_cmd(struct ovpn_ctx *ovpn) { char peer_id[10], vpnip[INET6_ADDRSTRLEN], laddr[128], lport[10]; char raddr[128], rport[10]; - int n, ret; + int n, ret = -1; FILE *fp; switch (ovpn->cmd) { -- 2.47.3

2 weeks, 4 days

2
2
0 0

[PATCH v3 net-next 00/12] AccECN protocol case handling series

by chia-yu.chang＠nokia-bell-labs.com

From: Chia-Yu Chang <chia-yu.chang(a)nokia-bell-labs.com> Hello, Plesae find the v2 AccECN case handling patch series, which covers several excpetional case handling of Accurate ECN spec (RFC9768), adds new identifiers to be used by CC modules, adds ecn_delta into rate_sample, and keeps the ACE counter for computation, etc. This patch series is part of the full AccECN patch series, which is available at https://github.com/L4STeam/linux-net-next/commits/upstream_l4steam/ Best regards, Chia-Yu --- v3: - Add additional min() check if pkts_acked_ewma is not initialized in #1. - Change TCP_CONG_WANTS_ECT_1 into individual flag add helper function INET_ECN_xmit_wants_ect_1() in #3. - Add empty line between variable declarations and code in #4. - Update commit message to fix old AccECN commits in #5. - Remove unnecessary brackets in #10. - Move patch #3 in v2 to a later Prague patch serise and remove patch #13 in v2. --- Chia-Yu Chang (10): tcp: L4S ECT(1) identifier and NEEDS_ACCECN for CC modules tcp: disable RFC3168 fallback identifier for CC modules tcp: accecn: handle unexpected AccECN negotiation feedback tcp: accecn: retransmit downgraded SYN in AccECN negotiation tcp: move increment of num_retrans tcp: accecn: retransmit SYN/ACK without AccECN option or non-AccECN SYN/ACK tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion tcp: accecn: fallback outgoing half link to non-AccECN tcp: accecn: verify ACE counter in 1st ACK after AccECN negotiation tcp: accecn: enable AccECN Ilpo Järvinen (2): tcp: try to avoid safer when ACKs are thinned gro: flushing when CWR is set negatively affects AccECN .../networking/net_cachelines/tcp_sock.rst | 1 + include/linux/tcp.h | 1 + include/net/inet_ecn.h | 20 ++++- include/net/tcp.h | 32 ++++++- include/net/tcp_ecn.h | 90 +++++++++++++------ net/ipv4/sysctl_net_ipv4.c | 2 +- net/ipv4/tcp.c | 2 + net/ipv4/tcp_cong.c | 10 ++- net/ipv4/tcp_input.c | 49 ++++++++-- net/ipv4/tcp_minisocks.c | 40 ++++++--- net/ipv4/tcp_offload.c | 3 +- net/ipv4/tcp_output.c | 35 +++++--- 12 files changed, 218 insertions(+), 67 deletions(-) -- 2.34.1

2 weeks, 4 days

3
14
0 0

linux-6.17/tools/testing/selftests/landlock/fs_test.c:5631: Test for pointer < 0 ?

by David Binderman

Hello there, Static analyser cppcheck says: linux-6.17/tools/testing/selftests/landlock/fs_test.c:5631:23: style: A pointer can not be negative so it is either pointless or an error to check if it is. [pointerLessThanZero] Source code is if (log_match_cursor < 0) return (long long)log_match_cursor; but char *log_match_cursor = log_match; Suggest remove code. Regards David Binderman

2 weeks, 5 days

1
0
0 0

[PATCH 0/6] KVM ARM64 pre_fault_memory

by Jack Thomson

From: Jack Thomson <jackabt(a)amazon.com> Overview: This patch series adds ARM64 support for the KVM_PRE_FAULT_MEMORY feature, which was previously only available on x86 [1]. This allows a reduction in the number of stage-2 faults during execution. This is beneficial in post-copy migration scenarios, particularly in memory intensive applications, where high latencies are experienced due to the stage-2 faults when pre-populating memory via UFFD / memcpy. Patch Overview: - The first patch is a preparatory refactor. - The second patch is adding a page walk flag for pre-faulting. - The third patch adds support for the KVM_PRE_FAULT_MEMORY ioctl on arm64. - The fourth patch fixes an issue with unaligned mmap allocations in the selftests. - The fifth patch updates the pre_fault_memory_test to support arm64. - The last patch extends the pre_fault_memory_test to cover different vm memory backings. [1]: https://lore.kernel.org/kvm/20240710174031.312055-1-pbonzini@redhat.com Jack Thomson (6): KVM: arm64: Add __gmem_abort and __user_mem_abort KVM: arm64: Add KVM_PGTABLE_WALK_PRE_FAULT walk flag KVM: arm64: Add pre_fault_memory implementation KVM: selftests: Fix unaligned mmap allocations KVM: selftests: Enable pre_fault_memory_test for arm64 KVM: selftests: Add option for different backing in pre-fault tests arch/arm64/include/asm/kvm_pgtable.h | 3 + arch/arm64/kvm/Kconfig | 1 + arch/arm64/kvm/arm.c | 1 + arch/arm64/kvm/hyp/pgtable.c | 6 +- arch/arm64/kvm/mmu.c | 97 +++++++++++++-- tools/testing/selftests/kvm/Makefile.kvm | 1 + tools/testing/selftests/kvm/lib/kvm_util.c | 12 +- .../selftests/kvm/pre_fault_memory_test.c | 110 +++++++++++++----- 8 files changed, 186 insertions(+), 45 deletions(-) base-commit: 42188667be387867d2bf763d028654cbad046f7b -- 2.43.0

2 weeks, 5 days

3
11
0 0

[PATCH v2] net: Fix uninit character pointer and return values

by Sidharth Seela

Fix uninitialized character pointer, and functions that return undefined values. These issues were caught by running clang using LLVM=1 option; and are as follows: -- ovpn-cli.c:1587:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 1587 | if (!sock) { | ^~~~~ ovpn-cli.c:1635:9: note: uninitialized use occurs here 1635 | return ret; | ^~~ ovpn-cli.c:1587:2: note: remove the 'if' if its condition is always false 1587 | if (!sock) { | ^~~~~~~~~~~~ 1588 | fprintf(stderr, "cannot allocate netlink socket\n"); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1589 | goto err_free; | ~~~~~~~~~~~~~~ 1590 | } | ~ ovpn-cli.c:1584:15: note: initialize the variable 'ret' to silence this warning 1584 | int mcid, ret; | ^ | = 0 ovpn-cli.c:2107:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] 2107 | case CMD_INVALID: | ^~~~~~~~~~~ ovpn-cli.c:2111:9: note: uninitialized use occurs here 2111 | return ret; | ^~~ ovpn-cli.c:1939:12: note: initialize the variable 'ret' to silence this warning 1939 | int n, ret; | ^ | -- so_txtime.c:210:3: warning: variable 'reason' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized] 210 | default: | ^~~~~~~ so_txtime.c:219:27: note: uninitialized use occurs here 219 | data[ret - 1], tstamp, reason); | ^~~~~~ so_txtime.c:177:21: note: initialize the variable 'reason' to silence this warning 177 | const char *reason; | ^ | -- Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module") ovpn module") Fixes: ca8826095e4d4 ("selftests/net: report etf errors correctly") Signed-off-by: Sidharth Seela <sidharthseela(a)gmail.com> v2: - Use subsystem name "net". - Add fixes tags. - Remove txtimestamp fix as default case calls error. - Assign constant error string instead of NULL. -- diff --git a/tools/testing/selftests/net/ovpn/ovpn-cli.c b/tools/testing/selftests/net/ovpn/ovpn-cli.c index 9201f2905f2c..20d00378f34a 100644 --- a/tools/testing/selftests/net/ovpn/ovpn-cli.c +++ b/tools/testing/selftests/net/ovpn/ovpn-cli.c @@ -1581,7 +1581,7 @@ static int ovpn_listen_mcast(void) { struct nl_sock *sock; struct nl_cb *cb; - int mcid, ret; + int mcid, ret = -1; sock = nl_socket_alloc(); if (!sock) { @@ -1936,7 +1936,7 @@ static int ovpn_run_cmd(struct ovpn_ctx *ovpn) { char peer_id[10], vpnip[INET6_ADDRSTRLEN], laddr[128], lport[10]; char raddr[128], rport[10]; - int n, ret; + int n, ret = -1; FILE *fp; switch (ovpn->cmd) { diff --git a/tools/testing/selftests/net/so_txtime.c b/tools/testing/selftests/net/so_txtime.c index 8457b7ccbc09..5bf3c483069b 100644 --- a/tools/testing/selftests/net/so_txtime.c +++ b/tools/testing/selftests/net/so_txtime.c @@ -174,7 +174,7 @@ static int do_recv_errqueue_timeout(int fdt) msg.msg_controllen = sizeof(control); while (1) { - const char *reason; + const char *reason = "unknown errno"; ret = recvmsg(fdt, &msg, MSG_ERRQUEUE); if (ret == -1 && errno == EAGAIN) -- 2.47.3

2 weeks, 5 days

2
2
0 0

[PATCH] selftest: net: Check return value from read

by Alessandro Zanni

Fix to retrieve the return value from the read() function and raise an error if negative. When building the test with the command `make -C tools/testing/selftests TARGETS=net` emits the following warning: tfo.c: In function ‘run_server’: tfo.c:84:9: warning: ignoring return value of ‘read’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 84 | read(connfd, buf, 64); Signed-off-by: Alessandro Zanni <alessandro.zanni87(a)gmail.com> --- tools/testing/selftests/net/tfo.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/tfo.c b/tools/testing/selftests/net/tfo.c index eb3cac5e583c..8fce369e6c37 100644 --- a/tools/testing/selftests/net/tfo.c +++ b/tools/testing/selftests/net/tfo.c @@ -50,6 +50,7 @@ static void run_server(void) socklen_t len; char buf[64]; FILE *outfile; + int ret; outfile = fopen(cfg_outfile, "w"); if (!outfile) @@ -81,7 +82,9 @@ static void run_server(void) if (getsockopt(connfd, SOL_SOCKET, SO_INCOMING_NAPI_ID, &opt, &len) < 0) error(1, errno, "getsockopt(SO_INCOMING_NAPI_ID)"); - read(connfd, buf, 64); + ret = read(connfd, buf, 64); + if (ret < 0) + error(1, errno, "read()"); fprintf(outfile, "%d\n", opt); fclose(outfile); -- 2.43.0

2 weeks, 5 days

2
1
0 0

[PATCH 00/19 v6.1.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 19 patches to update minmax.h in the 6.1.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes. Previous work to update 6.12.48: https://lore.kernel.org/stable/20250922103123.14538-1-farbere@amazon.com/T/… and 6.6.107: https://lore.kernel.org/stable/20250922103241.16213-1-farbere@amazon.com/T/… The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in older kernels. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Andy Shevchenko (1): minmax: deduplicate __unconst_integer_typeof() David Laight (8): minmax: fix indentation of __cmp_once() and __clamp_once() minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Herve Codina (1): minmax: Introduce {min,max}_array() Linus Torvalds (8): minmax: avoid overly complicated constant expressions in VM code minmax: simplify and clarify min_t()/max_t() implementation minmax: make generic MIN() and MAX() macros available everywhere minmax: add a few more MIN_T/MAX_T users minmax: simplify min()/max()/clamp() implementation minmax: don't use max() in situations that want a C constant expression minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too Matthew Wilcox (Oracle) (1): minmax: add in_range() macro arch/arm/mm/pageattr.c | 6 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - .../drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + .../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 +- .../drm/arm/display/include/malidp_utils.h | 2 +- .../display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hwmon/adt7475.c | 24 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 2 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/virt/acrn/ioreq.c | 4 +- fs/btrfs/misc.h | 2 - fs/btrfs/tree-checker.c | 2 +- fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/ufs/util.h | 6 - include/linux/compiler.h | 9 + include/linux/minmax.h | 264 +++++++++++++----- include/linux/pageblock-flags.h | 2 +- kernel/trace/preemptirq_delay_test.c | 2 - lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - lib/vsprintf.c | 2 +- mm/zsmalloc.c | 1 - net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- .../selftests/bpf/progs/get_branch_snapshot.c | 4 +- tools/testing/selftests/seccomp/seccomp_bpf.c | 2 + tools/testing/selftests/vm/mremap_test.c | 2 + 48 files changed, 290 insertions(+), 184 deletions(-) -- 2.47.3

2 weeks, 5 days

3
24
0 0

[PATCH RFC 0/3] arm64/gcs: Allow reuse of user managed shadow stacks

by Mark Brown

During the discussion of the clone3() support for shadow stacks concerns were raised from the glibc side that since it is not possible to reuse the allocated shadow stack[1]. This means that the benefit of being able to manage allocations is greatly reduced, for example it is not possible to integrate the shadow stacks into the glibc thread stack cache. The stack can be inspected but otherwise it would have to be unmapped and remapped before it could be used again, it's not clear that this is better than managing things in the kernel. In that discussion I suggested that we could enable reuse by writing a token to the shadow stack of exiting threads, mirroring how the userspace stack pivot instructions write a token to the outgoing stack. As mentioned by Florian[2] glibc already unwinds the stack and exits the thread from the start routine which would integrate nicely with this, the shadow stack pointer will be at the same place as it was when the thread started. This would not write a token if the thread doesn't exit cleanly, that seems viable to me - users should probably handle this by double checking that a token is present after waiting for the thread. This is tagged as a RFC since I put it together fairly quickly to demonstrate the proposal and the suggestion hasn't had much response either way from the glibc developers. At the very least we don't currently handle scheduling during exit(), or distinguish why the thread is exiting. I've also not done anything about x86. [1] https://marc.info/?l=glibc-alpha&m=175821637429537&w=2 [2] https://marc.info/?l=glibc-alpha&m=175733266913483&w=2 Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Mark Brown (3): arm64/gcs: Support reuse of GCS for exited threads kselftest/arm64: Validate PR_SHADOW_STACK_EXIT_TOKEN in basic-gcs kselftest/arm64: Add PR_SHADOW_STACK_EXIT_TOKEN to gcs-locking arch/arm64/include/asm/gcs.h | 3 +- arch/arm64/mm/gcs.c | 25 ++++- include/uapi/linux/prctl.h | 1 + tools/testing/selftests/arm64/gcs/basic-gcs.c | 121 ++++++++++++++++++++++++ tools/testing/selftests/arm64/gcs/gcs-locking.c | 23 +++++ tools/testing/selftests/arm64/gcs/gcs-util.h | 3 +- 6 files changed, 173 insertions(+), 3 deletions(-) --- base-commit: 0b67d4b724b4afed2690c21bef418b8a803c5be2 change-id: 20250919-arm64-gcs-exit-token-82c3c2570aad prerequisite-change-id: 20231019-clone3-shadow-stack-15d40d2bf536 Best regards, -- Mark Brown <broonie(a)kernel.org>

2 weeks, 5 days

5
21
0 0

[PATCH net v5 0/4] net: netpoll: fix memory leak and add comprehensive selftests

by Breno Leitao

Fix a memory leak in netpoll and introduce netconsole selftests that expose the issue when running with kmemleak detection enabled. This patchset includes a selftest for netpoll with multiple concurrent users (netconsole + bonding), which simulates the scenario from test[1] that originally demonstrated the issue allegedly fixed by commit efa95b01da18 ("netpoll: fix use after free") - a commit that is now being reverted. Sending this to "net" branch because this is a fix, and the selftest might help with the backports validation. Link: https://lore.kernel.org/lkml/96b940137a50e5c387687bb4f57de8b0435a653f.14048… [1] Signed-off-by: Breno Leitao <leitao(a)debian.org> --- Changes in v5: - Set CONFIG_BONDING=m in selftests/drivers/net/config. - Link to v4: https://lore.kernel.org/r/20250917-netconsole_torture-v4-0-0a5b3b8f81ce@deb… Changes in v4: - Added an additional selftest to test multiple netpoll users in parallel - Link to v3: https://lore.kernel.org/r/20250905-netconsole_torture-v3-0-875c7febd316@deb… Changes in v3: - This patchset is a merge of the fix and the selftest together as recommended by Jakub. Changes in v2: - Reuse the netconsole creation from lib_netcons.sh. Thus, refactoring the create_dynamic_target() (Jakub) - Move the "wait" to after all the messages has been sent. - Link to v1: https://lore.kernel.org/r/20250902-netconsole_torture-v1-1-03c6066598e9@deb… --- Breno Leitao (4): net: netpoll: fix incorrect refcount handling causing incorrect cleanup selftest: netcons: refactor target creation selftest: netcons: create a torture test selftest: netcons: add test for netconsole over bonded interfaces net/core/netpoll.c | 7 +- tools/testing/selftests/drivers/net/Makefile | 2 + tools/testing/selftests/drivers/net/config | 1 + .../selftests/drivers/net/lib/sh/lib_netcons.sh | 197 ++++++++++++++++++--- .../selftests/drivers/net/netcons_over_bonding.sh | 76 ++++++++ .../selftests/drivers/net/netcons_torture.sh | 127 +++++++++++++ 6 files changed, 385 insertions(+), 25 deletions(-) --- base-commit: 5e87fdc37f8dc619549d49ba5c951b369ce7c136 change-id: 20250902-netconsole_torture-8fc23f0aca99 Best regards, -- Breno Leitao <leitao(a)debian.org>

2 weeks, 5 days

2
9
0 0

Error during building on next-20250926 - kunit.py run --alltests run

by Shuah Khan

Hi Thomas and David, I am seeing the following error during "kunit.py run --alltests run" next-20250926. $ make all compile_commands.json scripts_gdb ARCH=um O=.kunit --jobs=16 ERROR:root:/usr/bin/ld: drivers/net/wireless/intel/iwlwifi/tests/devinfo.o: in function `devinfo_pci_ids_config': devinfo.c:(.text+0x2d): undefined reference to `iwl_bz_mac_cfg' collect2: error: ld returned 1 exit status make[3]: *** [../scripts/Makefile.vmlinux:72: vmlinux.unstripped] Error 1 make[2]: *** [/linux/linux_next/Makefile:1242: vmlinux] Error 2 make[1]: *** [/linux/linux_next/Makefile:248: __sub-make] Error 2 make: *** [Makefile:248: __sub-make] Error 2 Possile intearction between these two commits: Note: linux-kselftext kunit branch is fine I am going send kunit pr to Linus later today. Heads up that "kunit.py run --alltests run" is failing on next-20250926 commit 031cdd3bc3f369553933c1b0f4cb18000162c8ff Author: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> Date: Mon Sep 8 09:03:38 2025 +0200 kunit: Enable PCI on UML without triggering WARN() commit 137b0bb916f1addb2ffbefd09a6e3e9d15fe6100 Author: Johannes Berg <johannes.berg(a)intel.com> Date: Mon Sep 15 11:34:28 2025 +0300 wifi: iwlwifi: tests: check listed PCI IDs have configs Note: linux-kselftext build just fine. thanks, -- Shuah

2 weeks, 5 days

2
4
0 0

[PATCH bpf-next v4 00/15] selftests/bpf: Integrate test_xsk.c to test_progs framework

by Bastien Curutchet (eBPF Foundation)

Hi all, The test_xsk.sh script covers many AF_XDP use cases. The tests it runs are defined in xksxceiver.c. Since this script is used to test real hardware, the goal here is to leave it as it is, and only integrate the tests that run on veth peers into the test_progs framework. Some tests are flaky so they can't be integrated in the CI as they are. I think that fixing their flakyness would require a significant amount of work. So, as first step, I've excluded them from the list of tests migrated to the CI (cf PATCH 14). If these tests get fixed at some point, integrating them into the CI will be straightforward. I noticed a small error on a function's return value while investigating on the report's summary issue pointed out by Maciej in previous iteration, the new PATCH 3 fixes it. PATCH 1 extracts test_xsk[.c/.h] from xskxceiver[.c/.h] to make the tests available to test_progs. PATCH 2 to 7 fix small issues in the current test PATCH 8 to 13 handle all errors to release resources instead of calling exit() when any error occurs. PATCH 14 isolates some flaky tests PATCH 15 integrate the non-flaky tests to the test_progs framework Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet(a)bootlin.com> --- Changes in v4: - Fix test_xsk.sh's summary report. - Merge PATCH 11 & 12 together, otherwise PATCH 11 fails to build. - Split old PATCH 3 in two patches. The first one fixes testapp_stats_rx_dropped(), the second one fixes testapp_xdp_shared_umem(). The unecessary frees (in testapp_stats_rx_full() and testapp_stats_fill_empty() are removed) - Link to v3: https://lore.kernel.org/r/20250904-xsk-v3-0-ce382e331485@bootlin.com Changes in v3: - Rebase on latest bpf-next_base to integrate commit c9110e6f7237 ("selftests/bpf: Fix count write in testapp_xdp_metadata_copy()"). - Move XDP_METADATA_COPY_* tests from flaky-tests to nominal tests - Link to v2: https://lore.kernel.org/r/20250902-xsk-v2-0-17c6345d5215@bootlin.com Changes in v2: - Rebase on the latest bpf-next_base and integrate the newly added tests to the work (adjust_tail* and tx_queue_consumer tests) - Re-order patches to split xkxceiver sooner. - Fix the bug reported by Maciej. - Fix verbose mode in test_xsk.sh by keeping kselftest (remove PATCH 1, 7 and 8) - Link to v1: https://lore.kernel.org/r/20250313-xsk-v1-0-7374729a93b9@bootlin.com --- Bastien Curutchet (eBPF Foundation) (15): selftests/bpf: test_xsk: Split xskxceiver selftests/bpf: test_xsk: Initialize bitmap before use selftests/bpf: test_xsk: Fix __testapp_validate_traffic()'s return value selftests/bpf: test_xsk: fix memory leak in testapp_stats_rx_dropped() selftests/bpf: test_xsk: fix memory leak in testapp_xdp_shared_umem() selftests/bpf: test_xsk: Wrap test clean-up in functions selftests/bpf: test_xsk: Release resources when swap fails selftests/bpf: test_xsk: Add return value to init_iface() selftests/bpf: test_xsk: Don't exit immediately when xsk_attach fails selftests/bpf: test_xsk: Don't exit immediately when gettimeofday fails selftests/bpf: test_xsk: Don't exit immediately when workers fail selftests/bpf: test_xsk: Don't exit immediately if validate_traffic fails selftests/bpf: test_xsk: Don't exit immediately on allocation failures selftests/bpf: test_xsk: Isolate flaky tests selftests/bpf: test_xsk: Integrate test_xsk.c to test_progs framework tools/testing/selftests/bpf/Makefile | 11 +- tools/testing/selftests/bpf/prog_tests/test_xsk.c | 2595 ++++++++++++++++++++ tools/testing/selftests/bpf/prog_tests/test_xsk.h | 294 +++ tools/testing/selftests/bpf/prog_tests/xsk.c | 146 ++ tools/testing/selftests/bpf/xskxceiver.c | 2696 +-------------------- tools/testing/selftests/bpf/xskxceiver.h | 156 -- 6 files changed, 3174 insertions(+), 2724 deletions(-) --- base-commit: 1bd67e08d0f3fcb8cc69a73fb7aab9f048be4b8e change-id: 20250218-xsk-0cf90e975d14 Best regards, -- Bastien Curutchet (eBPF Foundation) <bastien.curutchet(a)bootlin.com>

2 weeks, 5 days

4
23
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[PATCH] selftest:net: Fix uninit pointers and return values

by Sidharth Seela

Fix uninitialized character pointers, and functions that return undefined values. These issues were caught by running clang using LLVM=1 option; and are as follows: -- ovpn-cli.c:1587:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 1587 | if (!sock) { | ^~~~~ ovpn-cli.c:1635:9: note: uninitialized use occurs here 1635 | return ret; | ^~~ ovpn-cli.c:1587:2: note: remove the 'if' if its condition is always false 1587 | if (!sock) { | ^~~~~~~~~~~~ 1588 | fprintf(stderr, "cannot allocate netlink socket\n"); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1589 | goto err_free; | ~~~~~~~~~~~~~~ 1590 | } | ~ ovpn-cli.c:1584:15: note: initialize the variable 'ret' to silence this warning 1584 | int mcid, ret; | ^ | = 0 ovpn-cli.c:2107:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] 2107 | case CMD_INVALID: | ^~~~~~~~~~~ ovpn-cli.c:2111:9: note: uninitialized use occurs here 2111 | return ret; | ^~~ ovpn-cli.c:1939:12: note: initialize the variable 'ret' to silence this warning 1939 | int n, ret; | ^ | -- txtimestamp.c:240:2: warning: variable 'tsname' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized] 240 | default: | ^~~~~~~ txtimestamp.c:244:20: note: uninitialized use occurs here 244 | __print_timestamp(tsname, &tss->ts[0], tskey, payload_len); | ^~~~~~ txtimestamp.c:220:20: note: initialize the variable 'tsname' to silence this warning 220 | const char *tsname; | ^ | = NULL -- so_txtime.c:210:3: warning: variable 'reason' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized] 210 | default: | ^~~~~~~ so_txtime.c:219:27: note: uninitialized use occurs here 219 | data[ret - 1], tstamp, reason); | ^~~~~~ so_txtime.c:177:21: note: initialize the variable 'reason' to silence this warning 177 | const char *reason; | ^ | -- Signed-off-by: Sidharth Seela <sidharthseela(a)gmail.com> --- diff --git a/tools/testing/selftests/net/ovpn/ovpn-cli.c b/tools/testing/selftests/net/ovpn/ovpn-cli.c index 9201f2905f2c..20d00378f34a 100644 --- a/tools/testing/selftests/net/ovpn/ovpn-cli.c +++ b/tools/testing/selftests/net/ovpn/ovpn-cli.c @@ -1581,7 +1581,7 @@ static int ovpn_listen_mcast(void) { struct nl_sock *sock; struct nl_cb *cb; - int mcid, ret; + int mcid, ret = -1; sock = nl_socket_alloc(); if (!sock) { @@ -1936,7 +1936,7 @@ static int ovpn_run_cmd(struct ovpn_ctx *ovpn) { char peer_id[10], vpnip[INET6_ADDRSTRLEN], laddr[128], lport[10]; char raddr[128], rport[10]; - int n, ret; + int n, ret = -1; FILE *fp; switch (ovpn->cmd) { diff --git a/tools/testing/selftests/net/so_txtime.c b/tools/testing/selftests/net/so_txtime.c index 8457b7ccbc09..b76df1efc2ef 100644 --- a/tools/testing/selftests/net/so_txtime.c +++ b/tools/testing/selftests/net/so_txtime.c @@ -174,7 +174,7 @@ static int do_recv_errqueue_timeout(int fdt) msg.msg_controllen = sizeof(control); while (1) { - const char *reason; + const char *reason = NULL; ret = recvmsg(fdt, &msg, MSG_ERRQUEUE); if (ret == -1 && errno == EAGAIN) diff --git a/tools/testing/selftests/net/txtimestamp.c b/tools/testing/selftests/net/txtimestamp.c index dae91eb97d69..bcc14688661d 100644 --- a/tools/testing/selftests/net/txtimestamp.c +++ b/tools/testing/selftests/net/txtimestamp.c @@ -217,7 +217,7 @@ static void print_timestamp_usr(void) static void print_timestamp(struct scm_timestamping *tss, int tstype, int tskey, int payload_len) { - const char *tsname; + const char *tsname = NULL; validate_key(tskey, tstype); -- 2.47.3

2 weeks, 5 days

2
2
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[PATCH v3 4/4] selftests/rseq: Add test for mm_cid compaction

by Gabriele Monaco

A task in the kernel (task_mm_cid_work) runs somewhat periodically to compact the mm_cid for each process. Add a test to validate that it runs correctly and timely. The test spawns 1 thread pinned to each CPU, then each thread, including the main one, runs in short bursts for some time. During this period, the mm_cids should be spanning all numbers between 0 and nproc. At the end of this phase, a thread with high enough mm_cid (>= nproc/2) is selected to be the new leader, all other threads terminate. After some time, the only running thread should see 0 as mm_cid, if that doesn't happen, the compaction mechanism didn't work and the test fails. The test never fails if only 1 core is available, in which case, we cannot test anything as the only available mm_cid is 0. Acked-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Gabriele Monaco <gmonaco(a)redhat.com> --- tools/testing/selftests/rseq/.gitignore | 1 + tools/testing/selftests/rseq/Makefile | 2 +- .../selftests/rseq/mm_cid_compaction_test.c | 204 ++++++++++++++++++ 3 files changed, 206 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/rseq/mm_cid_compaction_test.c diff --git a/tools/testing/selftests/rseq/.gitignore b/tools/testing/selftests/rseq/.gitignore index 0fda241fa62b..b3920c59bf40 100644 --- a/tools/testing/selftests/rseq/.gitignore +++ b/tools/testing/selftests/rseq/.gitignore @@ -3,6 +3,7 @@ basic_percpu_ops_test basic_percpu_ops_mm_cid_test basic_test basic_rseq_op_test +mm_cid_compaction_test param_test param_test_benchmark param_test_compare_twice diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile index 0d0a5fae5954..bc4d940f66d4 100644 --- a/tools/testing/selftests/rseq/Makefile +++ b/tools/testing/selftests/rseq/Makefile @@ -17,7 +17,7 @@ OVERRIDE_TARGETS = 1 TEST_GEN_PROGS = basic_test basic_percpu_ops_test basic_percpu_ops_mm_cid_test param_test \ param_test_benchmark param_test_compare_twice param_test_mm_cid \ param_test_mm_cid_benchmark param_test_mm_cid_compare_twice \ - syscall_errors_test + syscall_errors_test mm_cid_compaction_test TEST_GEN_PROGS_EXTENDED = librseq.so diff --git a/tools/testing/selftests/rseq/mm_cid_compaction_test.c b/tools/testing/selftests/rseq/mm_cid_compaction_test.c new file mode 100644 index 000000000000..d13623625f5a --- /dev/null +++ b/tools/testing/selftests/rseq/mm_cid_compaction_test.c @@ -0,0 +1,204 @@ +// SPDX-License-Identifier: LGPL-2.1 +#define _GNU_SOURCE +#include <assert.h> +#include <pthread.h> +#include <sched.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stddef.h> + +#include "../kselftest.h" +#include "rseq.h" + +#define VERBOSE 0 +#define printf_verbose(fmt, ...) \ + do { \ + if (VERBOSE) \ + printf(fmt, ##__VA_ARGS__); \ + } while (0) + +/* 50 ms */ +#define RUNNER_PERIOD 50000 +/* + * Number of runs before we terminate or get the token. + * The number is slowly increasing with the number of CPUs as the compaction + * process can take longer on larger systems. This is an arbitrary value. + */ +#define THREAD_RUNS (3 + args->num_cpus/8) + +/* + * Number of times we check that the mm_cid were compacted. + * Checks are repeated every RUNNER_PERIOD. + */ +#define MM_CID_COMPACT_TIMEOUT 10 + +struct thread_args { + int cpu; + int num_cpus; + pthread_mutex_t *token; + pthread_barrier_t *barrier; + pthread_t *tinfo; + struct thread_args *args_head; +}; + +static void __noreturn *thread_runner(void *arg) +{ + struct thread_args *args = arg; + int i, ret, curr_mm_cid; + cpu_set_t cpumask; + + CPU_ZERO(&cpumask); + CPU_SET(args->cpu, &cpumask); + ret = pthread_setaffinity_np(pthread_self(), sizeof(cpumask), &cpumask); + if (ret) { + errno = ret; + perror("Error: failed to set affinity"); + abort(); + } + pthread_barrier_wait(args->barrier); + + for (i = 0; i < THREAD_RUNS; i++) + usleep(RUNNER_PERIOD); + curr_mm_cid = rseq_current_mm_cid(); + /* + * We select one thread with high enough mm_cid to be the new leader. + * All other threads (including the main thread) will terminate. + * After some time, the mm_cid of the only remaining thread should + * converge to 0, if not, the test fails. + */ + if (curr_mm_cid >= args->num_cpus / 2 && + !pthread_mutex_trylock(args->token)) { + printf_verbose( + "cpu%d has mm_cid=%d and will be the new leader.\n", + sched_getcpu(), curr_mm_cid); + for (i = 0; i < args->num_cpus; i++) { + if (args->tinfo[i] == pthread_self()) + continue; + ret = pthread_join(args->tinfo[i], NULL); + if (ret) { + errno = ret; + perror("Error: failed to join thread"); + abort(); + } + } + pthread_barrier_destroy(args->barrier); + free(args->tinfo); + free(args->token); + free(args->barrier); + free(args->args_head); + + for (i = 0; i < MM_CID_COMPACT_TIMEOUT; i++) { + curr_mm_cid = rseq_current_mm_cid(); + printf_verbose("run %d: mm_cid=%d on cpu%d.\n", i, + curr_mm_cid, sched_getcpu()); + if (curr_mm_cid == 0) + exit(EXIT_SUCCESS); + usleep(RUNNER_PERIOD); + } + exit(EXIT_FAILURE); + } + printf_verbose("cpu%d has mm_cid=%d and is going to terminate.\n", + sched_getcpu(), curr_mm_cid); + pthread_exit(NULL); +} + +int test_mm_cid_compaction(void) +{ + cpu_set_t affinity; + int i, j, ret = 0, num_threads; + pthread_t *tinfo; + pthread_mutex_t *token; + pthread_barrier_t *barrier; + struct thread_args *args; + + sched_getaffinity(0, sizeof(affinity), &affinity); + num_threads = CPU_COUNT(&affinity); + tinfo = calloc(num_threads, sizeof(*tinfo)); + if (!tinfo) { + perror("Error: failed to allocate tinfo"); + return -1; + } + args = calloc(num_threads, sizeof(*args)); + if (!args) { + perror("Error: failed to allocate args"); + ret = -1; + goto out_free_tinfo; + } + token = malloc(sizeof(*token)); + if (!token) { + perror("Error: failed to allocate token"); + ret = -1; + goto out_free_args; + } + barrier = malloc(sizeof(*barrier)); + if (!barrier) { + perror("Error: failed to allocate barrier"); + ret = -1; + goto out_free_token; + } + if (num_threads == 1) { + fprintf(stderr, "Cannot test on a single cpu. " + "Skipping mm_cid_compaction test.\n"); + /* only skipping the test, this is not a failure */ + goto out_free_barrier; + } + pthread_mutex_init(token, NULL); + ret = pthread_barrier_init(barrier, NULL, num_threads); + if (ret) { + errno = ret; + perror("Error: failed to initialise barrier"); + goto out_free_barrier; + } + for (i = 0, j = 0; i < CPU_SETSIZE && j < num_threads; i++) { + if (!CPU_ISSET(i, &affinity)) + continue; + args[j].num_cpus = num_threads; + args[j].tinfo = tinfo; + args[j].token = token; + args[j].barrier = barrier; + args[j].cpu = i; + args[j].args_head = args; + if (!j) { + /* The first thread is the main one */ + tinfo[0] = pthread_self(); + ++j; + continue; + } + ret = pthread_create(&tinfo[j], NULL, thread_runner, &args[j]); + if (ret) { + errno = ret; + perror("Error: failed to create thread"); + abort(); + } + ++j; + } + printf_verbose("Started %d threads.\n", num_threads); + + /* Also main thread will terminate if it is not selected as leader */ + thread_runner(&args[0]); + + /* only reached in case of errors */ +out_free_barrier: + free(barrier); +out_free_token: + free(token); +out_free_args: + free(args); +out_free_tinfo: + free(tinfo); + + return ret; +} + +int main(int argc, char **argv) +{ + if (!rseq_mm_cid_available()) { + fprintf(stderr, "Error: rseq_mm_cid unavailable\n"); + return -1; + } + if (test_mm_cid_compaction()) + return -1; + return 0; +} -- 2.51.0

2 weeks, 5 days

1
0
0 0

next-20250924: Internal error: Oops: mnt_ns_release (fs/namespace.c:148) __arm64_sys_listmount (fs/namespace.c:5936)

by Naresh Kamboju

While running LTP syscalls tests on Linux next-20250924 tag build the following kernel oops noticed on arm64 and x86_64 devices. First seen on next-20250924 Good: next-20250923 Bad: next-2025094 Regression Analysis: - New regression? yes - Reproducibility? yes Test regression: next-20250924: Internal error: Oops: mnt_ns_release (fs/namespace.c:148) __arm64_sys_listmount (fs/namespace.c:5936) Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> $ git log --oneline next-20250923..next-20250924 -- fs/namespace.c c54644c3221b6 (next/fs-next) Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git 1f28cc19559a8 Merge branch 'namespace-6.18' into vfs.all e2c277f720291 Merge branch 'kernel-6.18.clone3' into vfs.all b2af83d5b8223 Merge branch 'vfs-6.18.mount' into vfs.all 29ecd1ca48ec2 Merge branch 'vfs-6.18.misc' into vfs.all d7610cb7454bb ns: simplify ns_common_init() further 59bfb66816809 listmount: don't call path_put() under namespace semaphore 2bc5bfbfd3f27 statmount: don't call path_put() under namespace semaphore ## Test log [ 41.821877] Internal error: Oops: 0000000096000005 [#1] SMP [ 41.919038] Modules linked in: cdc_ether usbnet sm3_ce sha3_ce nvme xhci_pci_renesas nvme_core arm_cspmu_module arm_spe_pmu ipmi_devintf ipmi_msghandler arm_cmn cppc_cpufreq drm fuse backlight [ 41.944048] CPU: 14 UID: 0 PID: 6416 Comm: listmount04 Not tainted 6.17.0-rc7-next-20250924 #1 PREEMPT [ 41.958197] Hardware name: Inspur NF5280R7/Mitchell MB, BIOS 04.04.00004001 2025-02-04 22:23:30 02/04/2025 [ 41.967837] pstate: 63400009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) [ 41.974958] pc : mnt_ns_release (arch/arm64/include/asm/atomic_lse.h:62 (discriminator 1) arch/arm64/include/asm/atomic_lse.h:76 (discriminator 1) arch/arm64/include/asm/atomic.h:51 (discriminator 1) include/linux/atomic/atomic-arch-fallback.h:944 (discriminator 1) include/linux/atomic/atomic-instrumented.h:401 (discriminator 1) include/linux/refcount.h:389 (discriminator 1) include/linux/refcount.h:432 (discriminator 1) include/linux/refcount.h:450 (discriminator 1) fs/namespace.c:148 (discriminator 1)) [ 41.981910] lr : __arm64_sys_listmount (fs/namespace.c:5936) [ 41.993467] sp : ffff8000ff5afd50 [ 42.000329] x29: ffff8000ff5afd50 x28: fff00001bd947380 x27: 0000000000000000 [ 42.007454] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000100 [ 42.030726] x23: 0000000000000000 x22: 0000000000000020 x21: ffff8000ff5afdc8 [ 42.038281] x20: 0000aaaabd6a1110 x19: 0000000000000000 x18: 0000000000000000 [ 42.045405] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 42.052528] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 42.075541] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffda68dcdbbe30 [ 42.082835] x8 : ffff8000ff5afda0 x7 : fefefefefefefefe x6 : ffffda68df5e9000 [ 42.096212] x5 : fff00001bd947380 [ 42.108978] x4 : fff00001bd947380 x3 : 0000000000000000 [ 42.114449] x2 : 0000000000000000 x1 : 00000000ffffffff x0 : 00000000000000b8 [ 42.134515] Call trace: [ 42.139725] mnt_ns_release (arch/arm64/include/asm/atomic_lse.h:62 (discriminator 1) arch/arm64/include/asm/atomic_lse.h:76 (discriminator 1) arch/arm64/include/asm/atomic.h:51 (discriminator 1) include/linux/atomic/atomic-arch-fallback.h:944 (discriminator 1) include/linux/atomic/atomic-instrumented.h:401 (discriminator 1) include/linux/refcount.h:389 (discriminator 1) include/linux/refcount.h:432 (discriminator 1) include/linux/refcount.h:450 (discriminator 1) fs/namespace.c:148 (discriminator 1)) (P) [ 42.143811] __arm64_sys_listmount (fs/namespace.c:5936) [ 42.148327] invoke_syscall.constprop.0 (arch/arm64/include/asm/syscall.h:61 arch/arm64/kernel/syscall.c:54) [ 42.159193] do_el0_svc (include/linux/thread_info.h:135 (discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2) arch/arm64/kernel/syscall.c:151 (discriminator 2)) [ 42.163970] el0_svc (arch/arm64/include/asm/irqflags.h:82 (discriminator 1) arch/arm64/include/asm/irqflags.h:123 (discriminator 1) arch/arm64/include/asm/irqflags.h:136 (discriminator 1) arch/arm64/kernel/entry-common.c:102 (discriminator 1) arch/arm64/kernel/entry-common.c:745 (discriminator 1)) [ 42.173791] el0t_64_sync_handler (arch/arm64/kernel/entry-common.c:764) [ 42.185342] el0t_64_sync (arch/arm64/kernel/entry.S:596) [ 42.189165] Code: aa0003f3 9102e000 d503201f 12800001 (b8610001) All code ======== 0: aa0003f3 mov x19, x0 4: 9102e000 add x0, x0, #0xb8 8: d503201f nop c: 12800001 mov w1, #0xffffffff // #-1 10:* b8610001 ldaddl w1, w1, [x0] <-- trapping instruction Code starting with the faulting instruction =========================================== 0: b8610001 ldaddl w1, w1, [x0] [ 42.211485] ---[ end trace 0000000000000000 ]--- ## Source * Kernel version: 6.17.0-rc7 * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git * Git describe: 6.17.0-rc7-next-20250924 * Git commit: b5a4da2c459f79a2c87c867398f1c0c315779781 * Architectures: arm64, x86_64 * Toolchains: gcc-13 * Kconfigs: defconfig+lkftconfig ## Build * Test log arm64: https://qa-reports.linaro.org/api/testruns/30007634/log_file/ * Test log x86_64: https://qa-reports.linaro.org/api/testruns/30000230/log_file/ * Test details: https://regressions.linaro.org/lkft/linux-next-master-ampere/next-20250924/… * Build plan: https://tuxapi.tuxsuite.com/v1/groups/ampere/projects/ci/tests/339teV8pAwrs… * Build link: https://storage.tuxsuite.com/public/ampere/ci/builds/339teBhKZ4DENKbJJNnbWK… * Kernel config: https://storage.tuxsuite.com/public/ampere/ci/builds/339teBhKZ4DENKbJJNnbWK… -- Linaro LKFT

2 weeks, 6 days

3
2
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[PATCH RESEND v4] selftests/tty: add TIOCSTI test suite

by Abhinav Saxena

TIOCSTI is a TTY ioctl command that allows inserting characters into the terminal input queue, making it appear as if the user typed those characters. This functionality has behavior that varies based on system configuration and process credentials. The dev.tty.legacy_tiocsti sysctl introduced in commit 83efeeeb3d04 ("tty: Allow TIOCSTI to be disabled") controls TIOCSTI usage. When disabled, TIOCSTI requires CAP_SYS_ADMIN capability. The current implementation checks the current process's credentials via capable(CAP_SYS_ADMIN), but does not validate against the file opener's credentials stored in file->f_cred. This creates different behavior when file descriptors are passed between processes via SCM_RIGHTS. Add a test suite with 16 test variants using fixture variants to verify TIOCSTI behavior when dev.tty.legacy_tiocsti is enabled/disabled: - Basic TIOCSTI tests (8 variants): Direct testing with different capability and controlling terminal combinations - FD passing tests (8 variants): Test behavior when file descriptors are passed between processes with different capabilities The FD passing tests document this behavior - some tests show different results than expected based on file opener credentials, demonstrating that TIOCSTI uses current process credentials rather than file opener credentials. The tests validate proper enforcement of the legacy_tiocsti sysctl. Test implementation uses openpty(3) with TIOCSCTTY for isolated PTY environments. See tty_ioctl(4) for details on TIOCSTI behavior and security requirements. Signed-off-by: Abhinav Saxena <xandfury(a)gmail.com> --- RESEND: add TTY/serial maintainers and linux-serial CCs. No code changes. - Link to orignal v4: https://lore.kernel.org/r/20250902-toicsti-bug-v4-1-e5c960e0b3d6@gmail.com Changes in v4: - Moved skip conditions and sysctl setup from TEST_F to FIXTURE_SETUP (Kees Cook) - Fixed fclose() error handling in set_legacy_tiocsti_setting (Kees Cook) - Extracted run_basic_tiocsti_test() and run_fdpass_tiocsti_test functions (Kees Cook) - Removed redundant sysctl restore logic from TEST_F (Kees Cook) - Simplified FIXTURE_TEARDOWN (Kees Cook) - Replace drop_to_nobody() to drop_all_privs() which should be more portable (Justin Stitt) - Link to v3: https://lore.kernel.org/r/20250730-toicsti-bug-v3-1-dd2dac97f27a@gmail.com Add selftests for TIOCSTI ioctl To run all tests: $ sudo ./tools/testing/selftests/tty/tty_tiocsti_test Test Results: - PASSED: 13/16 tests - Different behavior: 3/16 tests (documenting credential checking behavior) All tests validated using: - scripts/checkpatch.pl --strict (clean output) - Functional testing on kernel v6.16-rc2 Changes in v3: - Replaced all printf() calls with TH_LOG() for proper test logging (Kees Cook) - Added struct __test_metadata parameter to helper functions - Moved common legacy_tiocsti availability check to FIXTURE_SETUP() - Implemented sysctl modification/restoration in FIXTURE_SETUP/TEARDOWN - Used openpty() with TIOCSCTTY for reliable PTY testing environment - Fixed child/parent synchronization in FD passing tests - Replaced manual _exit(1) handling with proper ASSERT statements - Switched // comments to /* */ format throughout - Expanded to 16 test variants using fixture variants - Enhanced error handling and test reliability - Link to v2: https://lore.kernel.org/r/20250713-toicsti-bug-v2-1-b183787eea29@gmail.com - Link to v1: https://lore.kernel.org/r/20250622-toicsti-bug-v1-0-f374373b04b2@gmail.com References: - tty_ioctl(4) - documents TIOCSTI ioctl and capability requirements - openpty(3) - pseudo-terminal creation and management - commit 83efeeeb3d04 ("tty: Allow TIOCSTI to be disabled") - Documentation/security/credentials.rst - https://github.com/KSPP/linux/issues/156 - https://lore.kernel.org/linux-hardening/Y0m9l52AKmw6Yxi1@hostpad/ - drivers/tty/Kconfig - Documentation/driver-api/tty/ --- tools/testing/selftests/tty/Makefile | 6 +- tools/testing/selftests/tty/config | 1 + tools/testing/selftests/tty/tty_tiocsti_test.c | 650 +++++++++++++++++++++++++ 3 files changed, 656 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/tty/Makefile b/tools/testing/selftests/tty/Makefile index 50d7027b2ae3fb495dd1c0684363fa8f426be42c..7f6fbe5a0cd5663310e334d9d068b21dab9136ec 100644 --- a/tools/testing/selftests/tty/Makefile +++ b/tools/testing/selftests/tty/Makefile @@ -1,5 +1,9 @@ # SPDX-License-Identifier: GPL-2.0 CFLAGS = -O2 -Wall -TEST_GEN_PROGS := tty_tstamp_update +TEST_GEN_PROGS := tty_tstamp_update tty_tiocsti_test +LDLIBS += -lcap include ../lib.mk + +# Add libcap for TIOCSTI test +$(OUTPUT)/tty_tiocsti_test: LDLIBS += -lcap diff --git a/tools/testing/selftests/tty/config b/tools/testing/selftests/tty/config new file mode 100644 index 0000000000000000000000000000000000000000..c6373aba66366c82435bb26c019eb360eb6310eb --- /dev/null +++ b/tools/testing/selftests/tty/config @@ -0,0 +1 @@ +CONFIG_LEGACY_TIOCSTI=y diff --git a/tools/testing/selftests/tty/tty_tiocsti_test.c b/tools/testing/selftests/tty/tty_tiocsti_test.c new file mode 100644 index 0000000000000000000000000000000000000000..5e767e6cb3ef8f05c5430eb0fcc792064c446c03 --- /dev/null +++ b/tools/testing/selftests/tty/tty_tiocsti_test.c @@ -0,0 +1,650 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * TTY Tests - TIOCSTI + * + * Copyright © 2025 Abhinav Saxena <xandfury(a)gmail.com> + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <errno.h> +#include <stdbool.h> +#include <string.h> +#include <sys/socket.h> +#include <sys/wait.h> +#include <pwd.h> +#include <termios.h> +#include <grp.h> +#include <sys/capability.h> +#include <sys/prctl.h> +#include <pty.h> +#include <utmp.h> + +#include "../kselftest_harness.h" + +enum test_type { + TEST_PTY_TIOCSTI_BASIC, + TEST_PTY_TIOCSTI_FD_PASSING, + /* other tests cases such as serial may be added. */ +}; + +/* + * Test Strategy: + * - Basic tests: Use PTY with/without TIOCSCTTY (controlling terminal for + * current process) + * - FD passing tests: Child creates PTY, parent receives FD (demonstrates + * security issue) + * + * SECURITY VULNERABILITY DEMONSTRATION: + * FD passing tests show that TIOCSTI uses CURRENT process credentials, not + * opener credentials. This means privileged processes can be given FDs from + * unprivileged processes and successfully perform TIOCSTI operations that the + * unprivileged process couldn't do directly. + * + * Attack scenario: + * 1. Unprivileged process opens TTY (direct TIOCSTI fails due to lack of + * privileges) + * 2. Unprivileged process passes FD to privileged process via SCM_RIGHTS + * 3. Privileged process can use TIOCSTI on the FD (succeeds due to its + * privileges) + * 4. Result: Effective privilege escalation via file descriptor passing + * + * This matches the kernel logic in tiocsti(): + * 1. if (!tty_legacy_tiocsti && !capable(CAP_SYS_ADMIN)) return -EIO; + * 2. if ((current->signal->tty != tty) && !capable(CAP_SYS_ADMIN)) + * return -EPERM; + * Note: Both checks use capable() on CURRENT process, not FD opener! + * + * If the file credentials were also checked along with the capable() checks + * then the results for FD pass tests would be consistent with the basic tests. + */ + +FIXTURE(tiocsti) +{ + int pty_master_fd; /* PTY - for basic tests */ + int pty_slave_fd; + bool has_pty; + bool initial_cap_sys_admin; + int original_legacy_tiocsti_setting; + bool can_modify_sysctl; +}; + +FIXTURE_VARIANT(tiocsti) +{ + const enum test_type test_type; + const bool controlling_tty; /* true=current->signal->tty == tty */ + const int legacy_tiocsti; /* 0=restricted, 1=permissive */ + const bool requires_cap; /* true=with CAP_SYS_ADMIN, false=without */ + const int expected_success; /* 0=success, -EIO/-EPERM=specific error */ +}; + +/* + * Tests Controlling Terminal Variants (current->signal->tty == tty) + * + * TIOCSTI Test Matrix: + * + * | legacy_tiocsti | CAP_SYS_ADMIN | Expected Result | Error | + * |----------------|---------------|-----------------|-------| + * | 1 (permissive) | true | SUCCESS | - | + * | 1 (permissive) | false | SUCCESS | - | + * | 0 (restricted) | true | SUCCESS | - | + * | 0 (restricted) | false | FAILURE | -EIO | + */ + +/* clang-format off */ +FIXTURE_VARIANT_ADD(tiocsti, basic_pty_permissive_withcap) { + .test_type = TEST_PTY_TIOCSTI_BASIC, + .controlling_tty = true, + .legacy_tiocsti = 1, + .requires_cap = true, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, basic_pty_permissive_nocap) { + .test_type = TEST_PTY_TIOCSTI_BASIC, + .controlling_tty = true, + .legacy_tiocsti = 1, + .requires_cap = false, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, basic_pty_restricted_withcap) { + .test_type = TEST_PTY_TIOCSTI_BASIC, + .controlling_tty = true, + .legacy_tiocsti = 0, + .requires_cap = true, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, basic_pty_restricted_nocap) { + .test_type = TEST_PTY_TIOCSTI_BASIC, + .controlling_tty = true, + .legacy_tiocsti = 0, + .requires_cap = false, + .expected_success = -EIO, /* FAILURE: legacy restriction */ +}; /* clang-format on */ + +/* + * Note for FD Passing Test Variants + * Since we're testing the scenario where an unprivileged process pass an FD + * to a privileged one, .requires_cap here means the caps of the child process. + * Not the parent; parent would always be privileged. + */ + +/* clang-format off */ +FIXTURE_VARIANT_ADD(tiocsti, fdpass_pty_permissive_withcap) { + .test_type = TEST_PTY_TIOCSTI_FD_PASSING, + .controlling_tty = true, + .legacy_tiocsti = 1, + .requires_cap = true, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, fdpass_pty_permissive_nocap) { + .test_type = TEST_PTY_TIOCSTI_FD_PASSING, + .controlling_tty = true, + .legacy_tiocsti = 1, + .requires_cap = false, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, fdpass_pty_restricted_withcap) { + .test_type = TEST_PTY_TIOCSTI_FD_PASSING, + .controlling_tty = true, + .legacy_tiocsti = 0, + .requires_cap = true, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, fdpass_pty_restricted_nocap) { + .test_type = TEST_PTY_TIOCSTI_FD_PASSING, + .controlling_tty = true, + .legacy_tiocsti = 0, + .requires_cap = false, + .expected_success = -EIO, +}; /* clang-format on */ + +/* + * Non-Controlling Terminal Variants (current->signal->tty != tty) + * + * TIOCSTI Test Matrix: + * + * | legacy_tiocsti | CAP_SYS_ADMIN | Expected Result | Error | + * |----------------|---------------|-----------------|-------| + * | 1 (permissive) | true | SUCCESS | - | + * | 1 (permissive) | false | FAILURE | -EPERM| + * | 0 (restricted) | true | SUCCESS | - | + * | 0 (restricted) | false | FAILURE | -EIO | + */ + +/* clang-format off */ +FIXTURE_VARIANT_ADD(tiocsti, basic_nopty_permissive_withcap) { + .test_type = TEST_PTY_TIOCSTI_BASIC, + .controlling_tty = false, + .legacy_tiocsti = 1, + .requires_cap = true, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, basic_nopty_permissive_nocap) { + .test_type = TEST_PTY_TIOCSTI_BASIC, + .controlling_tty = false, + .legacy_tiocsti = 1, + .requires_cap = false, + .expected_success = -EPERM, +}; + +FIXTURE_VARIANT_ADD(tiocsti, basic_nopty_restricted_withcap) { + .test_type = TEST_PTY_TIOCSTI_BASIC, + .controlling_tty = false, + .legacy_tiocsti = 0, + .requires_cap = true, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, basic_nopty_restricted_nocap) { + .test_type = TEST_PTY_TIOCSTI_BASIC, + .controlling_tty = false, + .legacy_tiocsti = 0, + .requires_cap = false, + .expected_success = -EIO, +}; + +FIXTURE_VARIANT_ADD(tiocsti, fdpass_nopty_permissive_withcap) { + .test_type = TEST_PTY_TIOCSTI_FD_PASSING, + .controlling_tty = false, + .legacy_tiocsti = 1, + .requires_cap = true, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, fdpass_nopty_permissive_nocap) { + .test_type = TEST_PTY_TIOCSTI_FD_PASSING, + .controlling_tty = false, + .legacy_tiocsti = 1, + .requires_cap = false, + .expected_success = -EPERM, +}; + +FIXTURE_VARIANT_ADD(tiocsti, fdpass_nopty_restricted_withcap) { + .test_type = TEST_PTY_TIOCSTI_FD_PASSING, + .controlling_tty = false, + .legacy_tiocsti = 0, + .requires_cap = true, + .expected_success = 0, +}; + +FIXTURE_VARIANT_ADD(tiocsti, fdpass_nopty_restricted_nocap) { + .test_type = TEST_PTY_TIOCSTI_FD_PASSING, + .controlling_tty = false, + .legacy_tiocsti = 0, + .requires_cap = false, + .expected_success = -EIO, +}; /* clang-format on */ + +/* Helper function to send FD via SCM_RIGHTS */ +static int send_fd_via_socket(int socket_fd, int fd_to_send) +{ + struct msghdr msg = { 0 }; + struct cmsghdr *cmsg; + char cmsg_buf[CMSG_SPACE(sizeof(int))]; + char dummy_data = 'F'; + struct iovec iov = { .iov_base = &dummy_data, .iov_len = 1 }; + + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = cmsg_buf; + msg.msg_controllen = sizeof(cmsg_buf); + + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_RIGHTS; + cmsg->cmsg_len = CMSG_LEN(sizeof(int)); + + memcpy(CMSG_DATA(cmsg), &fd_to_send, sizeof(int)); + + return sendmsg(socket_fd, &msg, 0) < 0 ? -1 : 0; +} + +/* Helper function to receive FD via SCM_RIGHTS */ +static int recv_fd_via_socket(int socket_fd) +{ + struct msghdr msg = { 0 }; + struct cmsghdr *cmsg; + char cmsg_buf[CMSG_SPACE(sizeof(int))]; + char dummy_data; + struct iovec iov = { .iov_base = &dummy_data, .iov_len = 1 }; + int received_fd = -1; + + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = cmsg_buf; + msg.msg_controllen = sizeof(cmsg_buf); + + if (recvmsg(socket_fd, &msg, 0) < 0) + return -1; + + for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { + if (cmsg->cmsg_level == SOL_SOCKET && + cmsg->cmsg_type == SCM_RIGHTS) { + memcpy(&received_fd, CMSG_DATA(cmsg), sizeof(int)); + break; + } + } + + return received_fd; +} + +static inline bool has_cap_sys_admin(void) +{ + cap_t caps = cap_get_proc(); + + if (!caps) + return false; + + cap_flag_value_t cap_val; + bool has_cap = (cap_get_flag(caps, CAP_SYS_ADMIN, CAP_EFFECTIVE, + &cap_val) == 0) && + (cap_val == CAP_SET); + + cap_free(caps); + return has_cap; +} + +/* + * Switch to non-root user and clear all capabilities + */ +static inline bool drop_all_privs(struct __test_metadata *_metadata) +{ + /* Drop supplementary groups */ + ASSERT_EQ(setgroups(0, NULL), 0); + + /* Switch to non-root user */ + ASSERT_EQ(setgid(1000), 0); + ASSERT_EQ(setuid(1000), 0); + + /* Clear all capabilities */ + cap_t empty = cap_init(); + + ASSERT_NE(empty, NULL); + ASSERT_EQ(cap_set_proc(empty), 0); + cap_free(empty); + + /* Prevent privilege regain */ + ASSERT_EQ(prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0), 0); + + /* Verify privilege drop */ + ASSERT_FALSE(has_cap_sys_admin()); + return true; +} + +static inline int get_legacy_tiocsti_setting(struct __test_metadata *_metadata) +{ + FILE *fp; + int value = -1; + + fp = fopen("/proc/sys/dev/tty/legacy_tiocsti", "r"); + if (!fp) { + /* legacy_tiocsti sysctl not available (kernel < 6.2) */ + return -1; + } + + if (fscanf(fp, "%d", &value) == 1 && fclose(fp) == 0) { + if (value < 0 || value > 1) + value = -1; /* Invalid value */ + } else { + value = -1; /* Failed to parse */ + } + + return value; +} + +static inline bool set_legacy_tiocsti_setting(struct __test_metadata *_metadata, + int value) +{ + FILE *fp; + bool success = false; + + /* Sanity-check the value */ + ASSERT_GE(value, 0); + ASSERT_LE(value, 1); + + /* + * Try to open for writing; if we lack permission, return false so + * the test harness will skip variants that need to change it + */ + fp = fopen("/proc/sys/dev/tty/legacy_tiocsti", "w"); + if (!fp) + return false; + + /* Write the new setting */ + if (fprintf(fp, "%d\n", value) > 0 && fclose(fp) == 0) + success = true; + else + TH_LOG("Failed to write legacy_tiocsti: %s", strerror(errno)); + + return success; +} + +/* + * TIOCSTI injection test function + * @tty_fd: TTY slave file descriptor to test TIOCSTI on + * Returns: 0 on success, -errno on failure + */ +static inline int test_tiocsti_injection(struct __test_metadata *_metadata, + int tty_fd) +{ + int ret; + char inject_char = 'V'; + + errno = 0; + ret = ioctl(tty_fd, TIOCSTI, &inject_char); + return ret == 0 ? 0 : -errno; +} + +/* + * Child process: test TIOCSTI directly with capability/controlling + * terminal setup + */ +static void run_basic_tiocsti_test(struct __test_metadata *_metadata, + FIXTURE_DATA(tiocsti) * self, + const FIXTURE_VARIANT(tiocsti) * variant) +{ + /* Handle capability requirements */ + if (self->initial_cap_sys_admin && !variant->requires_cap) + ASSERT_TRUE(drop_all_privs(_metadata)); + + if (variant->controlling_tty) { + /* + * Create new session and set PTY as + * controlling terminal + */ + pid_t sid = setsid(); + + ASSERT_GE(sid, 0); + ASSERT_EQ(ioctl(self->pty_slave_fd, TIOCSCTTY, 0), 0); + } + + /* + * Validate test environment setup and verify final + * capability state matches expectation + * after potential drop. + */ + ASSERT_TRUE(self->has_pty); + ASSERT_EQ(has_cap_sys_admin(), variant->requires_cap); + + /* Test TIOCSTI and validate result */ + int result = test_tiocsti_injection(_metadata, self->pty_slave_fd); + + /* Check against expected result from variant */ + EXPECT_EQ(result, variant->expected_success); + _exit(0); +} + +/* + * Child process: create PTY and then pass FD to parent via SCM_RIGHTS + */ +static void run_fdpass_tiocsti_test(struct __test_metadata *_metadata, + const FIXTURE_VARIANT(tiocsti) * variant, + int sockfd) +{ + signal(SIGHUP, SIG_IGN); + + /* Handle privilege dropping */ + if (!variant->requires_cap && has_cap_sys_admin()) + ASSERT_TRUE(drop_all_privs(_metadata)); + + /* Create child's PTY */ + int child_master_fd, child_slave_fd; + + ASSERT_EQ(openpty(&child_master_fd, &child_slave_fd, NULL, NULL, NULL), + 0); + + if (variant->controlling_tty) { + pid_t sid = setsid(); + + ASSERT_GE(sid, 0); + ASSERT_EQ(ioctl(child_slave_fd, TIOCSCTTY, 0), 0); + } + + /* Test child's direct TIOCSTI for reference */ + int direct_result = test_tiocsti_injection(_metadata, child_slave_fd); + + EXPECT_EQ(direct_result, variant->expected_success); + + /* Send FD to parent */ + ASSERT_EQ(send_fd_via_socket(sockfd, child_slave_fd), 0); + + /* Wait for parent completion signal */ + char sync_byte; + ssize_t bytes_read = read(sockfd, &sync_byte, 1); + + ASSERT_EQ(bytes_read, 1); + + close(child_master_fd); + close(child_slave_fd); + close(sockfd); + _exit(0); +} + +FIXTURE_SETUP(tiocsti) +{ + /* Create PTY pair for basic tests */ + self->has_pty = (openpty(&self->pty_master_fd, &self->pty_slave_fd, + NULL, NULL, NULL) == 0); + if (!self->has_pty) { + self->pty_master_fd = -1; + self->pty_slave_fd = -1; + } + + self->initial_cap_sys_admin = has_cap_sys_admin(); + self->original_legacy_tiocsti_setting = + get_legacy_tiocsti_setting(_metadata); + + if (self->original_legacy_tiocsti_setting < 0) + SKIP(return, + "legacy_tiocsti sysctl not available (kernel < 6.2)"); + + /* Common skip conditions */ + if (variant->test_type == TEST_PTY_TIOCSTI_BASIC && !self->has_pty) + SKIP(return, "PTY not available for controlling terminal test"); + + if (variant->test_type == TEST_PTY_TIOCSTI_FD_PASSING && + !self->initial_cap_sys_admin) + SKIP(return, "FD Pass tests require CAP_SYS_ADMIN"); + + if (variant->requires_cap && !self->initial_cap_sys_admin) + SKIP(return, "Test requires initial CAP_SYS_ADMIN"); + + /* Test if we can modify the sysctl (requires appropriate privileges) */ + self->can_modify_sysctl = set_legacy_tiocsti_setting( + _metadata, self->original_legacy_tiocsti_setting); + + /* Sysctl setup based on variant */ + if (self->can_modify_sysctl && + self->original_legacy_tiocsti_setting != variant->legacy_tiocsti) { + if (!set_legacy_tiocsti_setting(_metadata, + variant->legacy_tiocsti)) + SKIP(return, "Failed to set legacy_tiocsti sysctl"); + + } else if (!self->can_modify_sysctl && + self->original_legacy_tiocsti_setting != + variant->legacy_tiocsti) + SKIP(return, "legacy_tiocsti setting mismatch"); +} + +FIXTURE_TEARDOWN(tiocsti) +{ + /* + * Backup restoration - + * each test should restore its own sysctl changes + */ + if (self->can_modify_sysctl) { + int current_value = get_legacy_tiocsti_setting(_metadata); + + if (current_value != self->original_legacy_tiocsti_setting) { + TH_LOG("Backup: Restoring legacy_tiocsti from %d to %d", + current_value, + self->original_legacy_tiocsti_setting); + set_legacy_tiocsti_setting( + _metadata, + self->original_legacy_tiocsti_setting); + } + } + + if (self->has_pty) { + if (self->pty_master_fd >= 0) + close(self->pty_master_fd); + if (self->pty_slave_fd >= 0) + close(self->pty_slave_fd); + } +} + +TEST_F(tiocsti, test) +{ + int status; + pid_t child_pid; + + if (variant->test_type == TEST_PTY_TIOCSTI_BASIC) { + /* ===== BASIC TIOCSTI TEST ===== */ + child_pid = fork(); + ASSERT_GE(child_pid, 0); + + /* Perform the actual test in the child process */ + if (child_pid == 0) + run_basic_tiocsti_test(_metadata, self, variant); + + } else { + /* ===== FD PASSING SECURITY TEST ===== */ + int sockpair[2]; + + ASSERT_EQ(socketpair(AF_UNIX, SOCK_STREAM, 0, sockpair), 0); + + child_pid = fork(); + ASSERT_GE(child_pid, 0); + + if (child_pid == 0) { + /* Child process - create PTY and send FD */ + close(sockpair[0]); + run_fdpass_tiocsti_test(_metadata, variant, + sockpair[1]); + } + + /* Parent process - receive FD and test TIOCSTI */ + close(sockpair[1]); + + int received_fd = recv_fd_via_socket(sockpair[0]); + + ASSERT_GE(received_fd, 0); + + bool parent_has_cap = self->initial_cap_sys_admin; + + TH_LOG("=== TIOCSTI FD Passing Test Context ==="); + TH_LOG("legacy_tiocsti: %d, Parent CAP_SYS_ADMIN: %s, Child: %s", + variant->legacy_tiocsti, parent_has_cap ? "yes" : "no", + variant->requires_cap ? "kept" : "dropped"); + + /* SECURITY TEST: Try TIOCSTI with FD opened by child */ + int result = test_tiocsti_injection(_metadata, received_fd); + + /* Log security concern if demonstrated */ + if (result == 0 && !variant->requires_cap) { + TH_LOG("*** SECURITY CONCERN DEMONSTRATED ***"); + TH_LOG("Privileged parent can use TIOCSTI on FD from unprivileged child"); + TH_LOG("This shows current process credentials are used, not opener credentials"); + } + + EXPECT_EQ(result, variant->expected_success) + { + TH_LOG("FD passing: expected error %d, got %d", + variant->expected_success, result); + } + + /* Signal child completion */ + char sync_byte = 'D'; + ssize_t bytes_written = write(sockpair[0], &sync_byte, 1); + + ASSERT_EQ(bytes_written, 1); + + close(received_fd); + close(sockpair[0]); + } + + /* Common child process cleanup for both test types */ + ASSERT_EQ(waitpid(child_pid, &status, 0), child_pid); + + if (WIFSIGNALED(status)) { + TH_LOG("Child terminated by signal %d", WTERMSIG(status)); + ASSERT_FALSE(WIFSIGNALED(status)) + { + TH_LOG("Child process failed assertion"); + } + } else { + EXPECT_EQ(WEXITSTATUS(status), 0); + } +} + +TEST_HARNESS_MAIN --- base-commit: e6b9dce0aeeb91dfc0974ab87f02454e24566182 change-id: 20250618-toicsti-bug-7822b8e94a32 Best regards, -- Abhinav Saxena <xandfury(a)gmail.com>

2 weeks, 6 days

1
1
0 0

[PATCH RFC 0/4] landlock: add LANDLOCK_SCOPE_MEMFD_EXEC execution

by Abhinav Saxena

This patch series introduces LANDLOCK_SCOPE_MEMFD_EXEC, a new Landlock scoping mechanism that restricts execution of anonymous memory file descriptors (memfd) created via memfd_create(2). This addresses security gaps where processes can bypass W^X policies and execute arbitrary code through anonymous memory objects. Fixes: https://github.com/landlock-lsm/linux/issues/37 SECURITY PROBLEM ================ Current Landlock filesystem restrictions do not cover memfd objects, allowing processes to: 1. Read-to-execute bypass: Create writable memfd, inject code, then execute via mmap(PROT_EXEC) or direct execve() 2. Anonymous execution: Execute code without touching the filesystem via execve("/proc/self/fd/N") where N is a memfd descriptor 3. Cross-domain access violations: Pass memfd between processes to bypass domain restrictions These scenarios can occur in sandboxed environments where filesystem access is restricted but memfd creation remains possible. IMPLEMENTATION ============== The implementation adds hierarchical execution control through domain scoping: Core Components: - is_memfd_file(): Reliable memfd detection via "memfd:" dentry prefix - domain_is_scoped(): Cross-domain hierarchy checking (moved to domain.c) - LSM hooks: mmap_file, file_mprotect, bprm_creds_for_exec - Creation-time restrictions: hook_file_alloc_security Security Matrix: Execution decisions follow domain hierarchy rules preventing both same-domain bypass attempts and cross-domain access violations while preserving legitimate hierarchical access patterns. Domain Hierarchy with LANDLOCK_SCOPE_MEMFD_EXEC: =============================================== Root (no domain) - No restrictions | +-- Domain A [SCOPE_MEMFD_EXEC] Layer 1 | +-- memfd_A (tagged with Domain A as creator) | | | +-- Domain A1 (child) [NO SCOPE] Layer 2 | | +-- Inherits Layer 1 restrictions from parent | | +-- memfd_A1 (can create, inherits restrictions) | | +-- Domain A1a [SCOPE_MEMFD_EXEC] Layer 3 | | +-- memfd_A1a (tagged with Domain A1a) | | | +-- Domain A2 (child) [SCOPE_MEMFD_EXEC] Layer 2 | +-- memfd_A2 (tagged with Domain A2 as creator) | +-- CANNOT access memfd_A1 (different subtree) | +-- Domain B [SCOPE_MEMFD_EXEC] Layer 1 +-- memfd_B (tagged with Domain B as creator) +-- CANNOT access ANY memfd from Domain A subtree Execution Decision Matrix: ======================== Executor-> | A | A1 | A1a | A2 | B | Root Creator | | | | | | ------------|-----|----|-----|----|----|----- Domain A | X | X | X | X | X | Y Domain A1 | Y | X | X | X | X | Y Domain A1a | Y | Y | X | X | X | Y Domain A2 | Y | X | X | X | X | Y Domain B | X | X | X | X | X | Y Root | Y | Y | Y | Y | Y | Y Legend: Y = Execution allowed, X = Execution denied Scenarios Covered: - Direct mmap(PROT_EXEC) on memfd files - Two-stage mmap(PROT_READ) + mprotect(PROT_EXEC) bypass attempts - execve("/proc/self/fd/N") anonymous execution - execveat() and fexecve() file descriptor execution - Cross-process memfd inheritance and IPC passing TESTING ======= All patches have been validated with: - scripts/checkpatch.pl --strict (clean) - Selftests covering same-domain restrictions, cross-domain hierarchy enforcement, and regular file isolation - KUnit tests for memfd detection edge cases DISCLAIMER ========== My understanding of Landlock scoping semantics may be limited, but this implementation reflects my current understanding based on available documentation and code analysis. I welcome feedback and corrections regarding the scoping logic and domain hierarchy enforcement. Signed-off-by: Abhinav Saxena <xandfury(a)gmail.com> --- Abhinav Saxena (4): landlock: add LANDLOCK_SCOPE_MEMFD_EXEC scope landlock: implement memfd detection landlock: add memfd exec LSM hooks and scoping selftests/landlock: add memfd execution tests include/uapi/linux/landlock.h | 5 + security/landlock/.kunitconfig | 1 + security/landlock/audit.c | 4 + security/landlock/audit.h | 1 + security/landlock/cred.c | 14 - security/landlock/domain.c | 67 ++++ security/landlock/domain.h | 4 + security/landlock/fs.c | 405 ++++++++++++++++++++- security/landlock/limits.h | 2 +- security/landlock/task.c | 67 ---- .../selftests/landlock/scoped_memfd_exec_test.c | 325 +++++++++++++++++ 11 files changed, 812 insertions(+), 83 deletions(-) --- base-commit: 5b74b2eff1eeefe43584e5b7b348c8cd3b723d38 change-id: 20250716-memfd-exec-ac0d582018c3 Best regards, -- Abhinav Saxena <xandfury(a)gmail.com>

2 weeks, 6 days

3
10
0 0

[PATCH v4 1/2] net/tls: support maximum record size limit

by Wilfred Mallawa

From: Wilfred Mallawa <wilfred.mallawa(a)wdc.com> During a handshake, an endpoint may specify a maximum record size limit. Currently, the kernel defaults to TLS_MAX_PAYLOAD_SIZE (16KB) for the maximum record size. Meaning that, the outgoing records from the kernel can exceed a lower size negotiated during the handshake. In such a case, the TLS endpoint must send a fatal "record_overflow" alert [1], and thus the record is discarded. Upcoming Western Digital NVMe-TCP hardware controllers implement TLS support. For these devices, supporting TLS record size negotiation is necessary because the maximum TLS record size supported by the controller is less than the default 16KB currently used by the kernel. This patch adds support for retrieving the negotiated record size limit during a handshake, and enforcing it at the TLS layer such that outgoing records are no larger than the size negotiated. This patch depends on the respective userspace support in tlshd and GnuTLS [2]. [1] https://www.rfc-editor.org/rfc/rfc8449 [2] https://gitlab.com/gnutls/gnutls/-/merge_requests/2005 Signed-off-by: Wilfred Mallawa <wilfred.mallawa(a)wdc.com> --- Changes V3 -> V4: * Added record_size_limit RFC reference to documentation * Always export the record size limit in tls_get_info() * Disallow user space to change the record_size_limit from under us if an open record is pending. * Added record_size_limit minimum size check as per RFC * Allow space for the ContentType byte for TLS 1.3. The expected behaviour is that userspace directly uses the negotiated record_size_limit, kernel will limit the plaintext buffer size appropirately. * New patch to add self-tests. --- Documentation/networking/tls.rst | 12 +++++ include/net/tls.h | 5 +++ include/uapi/linux/tls.h | 2 + net/tls/tls_device.c | 2 +- net/tls/tls_main.c | 75 ++++++++++++++++++++++++++++++++ net/tls/tls_sw.c | 2 +- 6 files changed, 96 insertions(+), 2 deletions(-) diff --git a/Documentation/networking/tls.rst b/Documentation/networking/tls.rst index 36cc7afc2527..d24bf8911bb8 100644 --- a/Documentation/networking/tls.rst +++ b/Documentation/networking/tls.rst @@ -280,6 +280,18 @@ If the record decrypted turns out to had been padded or is not a data record it will be decrypted again into a kernel buffer without zero copy. Such events are counted in the ``TlsDecryptRetry`` statistic. +TLS_TX_RECORD_SIZE_LIM +~~~~~~~~~~~~~~~~~~~~~~ + +Sets the maximum size for the plaintext of a protected record. + +The provided value should correspond to the limit negotiated during the TLS +handshake via the `record_size_limit` extension (RFC 8449)[1]. When this +option is set, the kernel enforces this limit on all transmitted TLS records, +ensuring no plaintext fragment exceeds the specified size. + +[1] https://datatracker.ietf.org/doc/html/rfc8449 + Statistics ========== diff --git a/include/net/tls.h b/include/net/tls.h index 857340338b69..32f053770ec4 100644 --- a/include/net/tls.h +++ b/include/net/tls.h @@ -53,6 +53,8 @@ struct tls_rec; /* Maximum data size carried in a TLS record */ #define TLS_MAX_PAYLOAD_SIZE ((size_t)1 << 14) +/* Minimum record size limit as per RFC8449 */ +#define TLS_MIN_RECORD_SIZE_LIM ((size_t)1 << 6) #define TLS_HEADER_SIZE 5 #define TLS_NONCE_OFFSET TLS_HEADER_SIZE @@ -226,6 +228,9 @@ struct tls_context { u8 rx_conf:3; u8 zerocopy_sendfile:1; u8 rx_no_pad:1; + u16 tx_record_size_limit; /* Max plaintext fragment size. For TLS 1.3, + * this excludes the ContentType. + */ int (*push_pending_record)(struct sock *sk, int flags); void (*sk_write_space)(struct sock *sk); diff --git a/include/uapi/linux/tls.h b/include/uapi/linux/tls.h index b66a800389cc..3add266d5916 100644 --- a/include/uapi/linux/tls.h +++ b/include/uapi/linux/tls.h @@ -41,6 +41,7 @@ #define TLS_RX 2 /* Set receive parameters */ #define TLS_TX_ZEROCOPY_RO 3 /* TX zerocopy (only sendfile now) */ #define TLS_RX_EXPECT_NO_PAD 4 /* Attempt opportunistic zero-copy */ +#define TLS_TX_RECORD_SIZE_LIM 5 /* Maximum record size */ /* Supported versions */ #define TLS_VERSION_MINOR(ver) ((ver) & 0xFF) @@ -194,6 +195,7 @@ enum { TLS_INFO_RXCONF, TLS_INFO_ZC_RO_TX, TLS_INFO_RX_NO_PAD, + TLS_INFO_TX_RECORD_SIZE_LIM, __TLS_INFO_MAX, }; #define TLS_INFO_MAX (__TLS_INFO_MAX - 1) diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index f672a62a9a52..bf16ceb41dde 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -459,7 +459,7 @@ static int tls_push_data(struct sock *sk, /* TLS_HEADER_SIZE is not counted as part of the TLS record, and * we need to leave room for an authentication tag. */ - max_open_record_len = TLS_MAX_PAYLOAD_SIZE + + max_open_record_len = tls_ctx->tx_record_size_limit + prot->prepend_size; do { rc = tls_do_allocation(sk, ctx, pfrag, prot->prepend_size); diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c index a3ccb3135e51..09883d9c6c96 100644 --- a/net/tls/tls_main.c +++ b/net/tls/tls_main.c @@ -544,6 +544,31 @@ static int do_tls_getsockopt_no_pad(struct sock *sk, char __user *optval, return 0; } +static int do_tls_getsockopt_tx_record_size(struct sock *sk, char __user *optval, + int __user *optlen) +{ + struct tls_context *ctx = tls_get_ctx(sk); + int len; + /* TLS 1.3: Record length contains ContentType */ + u16 record_size_limit = ctx->prot_info.version == TLS_1_3_VERSION ? + ctx->tx_record_size_limit + 1 : + ctx->tx_record_size_limit; + + if (get_user(len, optlen)) + return -EFAULT; + + if (len < sizeof(record_size_limit)) + return -EINVAL; + + if (put_user(sizeof(record_size_limit), optlen)) + return -EFAULT; + + if (copy_to_user(optval, &record_size_limit, sizeof(record_size_limit))) + return -EFAULT; + + return 0; +} + static int do_tls_getsockopt(struct sock *sk, int optname, char __user *optval, int __user *optlen) { @@ -563,6 +588,9 @@ static int do_tls_getsockopt(struct sock *sk, int optname, case TLS_RX_EXPECT_NO_PAD: rc = do_tls_getsockopt_no_pad(sk, optval, optlen); break; + case TLS_TX_RECORD_SIZE_LIM: + rc = do_tls_getsockopt_tx_record_size(sk, optval, optlen); + break; default: rc = -ENOPROTOOPT; break; @@ -812,6 +840,43 @@ static int do_tls_setsockopt_no_pad(struct sock *sk, sockptr_t optval, return rc; } +static int do_tls_setsockopt_tx_record_size(struct sock *sk, sockptr_t optval, + unsigned int optlen) +{ + struct tls_context *ctx = tls_get_ctx(sk); + struct tls_sw_context_tx *sw_ctx = tls_sw_ctx_tx(ctx); + u16 value; + + if (sw_ctx->open_rec) + return -EBUSY; + + if (sockptr_is_null(optval) || optlen != sizeof(value)) + return -EINVAL; + + if (copy_from_sockptr(&value, optval, sizeof(value))) + return -EFAULT; + + if (value < TLS_MIN_RECORD_SIZE_LIM) + return -EINVAL; + + if (ctx->prot_info.version == TLS_1_2_VERSION && + value > TLS_MAX_PAYLOAD_SIZE) + return -EINVAL; + + if (ctx->prot_info.version == TLS_1_3_VERSION && + value - 1 > TLS_MAX_PAYLOAD_SIZE) + return -EINVAL; + + /* + * For TLS 1.3: 'value' includes one byte for the appended ContentType. + * Adjust the kernel's internal plaintext limit accordingly. + */ + ctx->tx_record_size_limit = ctx->prot_info.version == TLS_1_3_VERSION ? + value - 1 : value; + + return 0; +} + static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, unsigned int optlen) { @@ -833,6 +898,9 @@ static int do_tls_setsockopt(struct sock *sk, int optname, sockptr_t optval, case TLS_RX_EXPECT_NO_PAD: rc = do_tls_setsockopt_no_pad(sk, optval, optlen); break; + case TLS_TX_RECORD_SIZE_LIM: + rc = do_tls_setsockopt_tx_record_size(sk, optval, optlen); + break; default: rc = -ENOPROTOOPT; break; @@ -1022,6 +1090,7 @@ static int tls_init(struct sock *sk) ctx->tx_conf = TLS_BASE; ctx->rx_conf = TLS_BASE; + ctx->tx_record_size_limit = TLS_MAX_PAYLOAD_SIZE; update_sk_prot(sk, ctx); out: write_unlock_bh(&sk->sk_callback_lock); @@ -1111,6 +1180,11 @@ static int tls_get_info(struct sock *sk, struct sk_buff *skb, bool net_admin) goto nla_failure; } + err = nla_put_u16(skb, TLS_INFO_TX_RECORD_SIZE_LIM, + ctx->tx_record_size_limit); + if (err) + goto nla_failure; + rcu_read_unlock(); nla_nest_end(skb, start); return 0; @@ -1132,6 +1206,7 @@ static size_t tls_get_info_size(const struct sock *sk, bool net_admin) nla_total_size(sizeof(u16)) + /* TLS_INFO_TXCONF */ nla_total_size(0) + /* TLS_INFO_ZC_RO_TX */ nla_total_size(0) + /* TLS_INFO_RX_NO_PAD */ + nla_total_size(sizeof(u16)) + /* TLS_INFO_TX_RECORD_SIZE_LIM */ 0; return size; diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index bac65d0d4e3e..28fb796573d1 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -1079,7 +1079,7 @@ static int tls_sw_sendmsg_locked(struct sock *sk, struct msghdr *msg, orig_size = msg_pl->sg.size; full_record = false; try_to_copy = msg_data_left(msg); - record_room = TLS_MAX_PAYLOAD_SIZE - msg_pl->sg.size; + record_room = tls_ctx->tx_record_size_limit - msg_pl->sg.size; if (try_to_copy >= record_room) { try_to_copy = record_room; full_record = true; -- 2.51.0

2 weeks, 6 days

4
10
0 0

[PATCH v2 2/2] ipv6: Check AF_UNSPEC in ip6_route_multipath_add()

by Maksimilijan Marosevic

This check was removed in commit e6f497955fb6 ("ipv6: Check GATEWAY in rtm_to_fib6_multipath_config().") as part of rt6_qualify_for ecmp(). The author correctly recognises that rt6_qualify_for_ecmp() returns false if fb_nh_gw_family is set to AF_UNSPEC, but then mistakes AF_UNSPEC for AF_INET6 when reasoning that the check is unnecessary. This means certain malformed entries don't get caught in ip6_route_multipath_add(). This patch reintroduces the AF_UNSPEC check while respecting changes of the initial patch. Reported-by: syzbot+a259a17220263c2d73fc(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=a259a17220263c2d73fc Fixes: e6f497955fb6 ("ipv6: Check GATEWAY in rtm_to_fib6_multipath_config().") Signed-off-by: Maksimilijan Marosevic <maksimilijan.marosevic(a)proton.me> --- net/ipv6/route.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index aee6a10b112a..884bae3fb1b1 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -5454,6 +5454,14 @@ static int ip6_route_multipath_add(struct fib6_config *cfg, goto cleanup; } + if (rt->fib6_nh->fib_nh_gw_family == AF_UNSPEC) { + err = -EINVAL; + NL_SET_ERR_MSG(extack, + "Device only routes can not be added for IPv6 using the multipath API."); + fib6_info_release(rt); + goto cleanup; + } + rt->fib6_nh->fib_nh_weight = rtnh->rtnh_hops + 1; err = ip6_route_info_append(&rt6_nh_list, rt, &r_cfg); -- 2.43.0

2 weeks, 6 days

1
0
0 0

Hello from France.

by David Santamaria

The Alphabetical layout was... auto-correct. Friendly: Neo (Jesus-Christ a.k.a. King David again). - Miracles proving that I was Jesus, and King David, are in my Facebook. I proposed to explain the Holy-Trinity live on TV. It is since year 2000 that I must be in the news. I do not declare be Jew, but get persecuted anyway by antisemites (antichristians?). Writing still does not pay my bills at all, keeps me almost homeless. While my intellectual property is stolen, my names removed from many Masterpieces. Facebook https://www.facebook.com/profile.php?id=100057121342964 Paypal https://www.paypal.com/paypalme/meDavidSantamaria Email/Teams DavidSantamaria(a)hotmail.fr<mailto:DavidSantamaria@hotmail.fr> RCS/WhatsApp +33 7 67 99 32 37 $ADA addr1qx8chpwdeqv77duf2eutrtgvd5967l4w87fy54fx0022gr8p80z2mq7cmunmrdvy8yn3pzfzpm46zyfjp8usl36vpw2q509hrd $BTC 3FdwVoDzJoUzceogUwEmVu9YxoFvX6c2Rk $WAVES 3PEAeFkwqVsgAiyad8uVQzQxiGDyJNnCCn5 Sent from my Public Address.

3 weeks

1
0
0 0

[PATCH 1/2] selftests/acct: add cleanup for leftover process_log binary

by Madhur Kumar

Some kselftests generate temporary binaries that are not tracked by TEST_GEN_PROGS. Add EXTRA_CLEAN entry to remove process_log during `make kselftest-clean`. Signed-off-by: Madhur Kumar <madhurkumar004(a)gmail.com> --- tools/testing/selftests/acct/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/acct/Makefile b/tools/testing/selftests/acct/Makefile index 7e025099cf65..16eb97079e63 100644 --- a/tools/testing/selftests/acct/Makefile +++ b/tools/testing/selftests/acct/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 TEST_GEN_PROGS := acct_syscall CFLAGS += -Wall +EXTRA_CLEAN := process_log -include ../lib.mk \ No newline at end of file +include ../lib.mk -- 2.51.0

3 weeks

2
8
0 0

[PATCH net-next 00/13] selftests: Mark auto-deferring functions clearly

by Petr Machata

selftests/net/lib.sh contains a suite of iproute2 wrappers that automatically schedule the corresponding cleanup through defer. The fact they do so is however not immediately obvious, one needs to know which functions are handling the deferral behind the scenes, and which expect the caller to handle cleanups themselves. A convention for these auto-deferring functions would help both writing and patch review. This patchset does so by marking these functions with an adf_ prefix. We already have a few such functions: forwarding/lib.sh has adf_mcd_start() and a few selftests add private helpers that conform to this convention. Patches #1 to #8 gradually convert individual functions, one per patch. Patch #9 renames an auto-deferring private helpers named dfr_* to adf_*. The plan is not to retro-rename all private helpers, but I happened to know about this one. Patches #10 to #12 introduce several autodefer helpers for commonly used forwarding/lib.sh functions, and opportunistically convert straightforward instances of 'action; defer counteraction' to the new helpers. Patch #13 adds some README verbiage to pitch defer and the adf_* convention. Petr Machata (13): selftests: net: lib: Rename ip_link_add() to adf_* selftests: net: lib: Rename ip_link_set_master() to adf_* selftests: net: lib: Rename ip_link_set_addr() to adf_* selftests: net: lib: Rename ip_link_set_up() to adf_* selftests: net: lib: Rename ip_link_set_down() to adf_* selftests: net: lib: Rename ip_addr_add() to adf_* selftests: net: lib: Rename ip_route_add() to adf_* selftests: net: lib: Rename bridge_vlan_add() to adf_* selftests: net: vlan_bridge_binding: Rename dfr_set_binding_*() to adf_* selftests: forwarding: lib: Add an autodefer variant of vrf_prepare() selftests: forwarding: lib: Add an autodefer variant of simple_if_init() selftests: forwarding: lib: Add an autodefer variant of forwarding_enable() selftests: forwarding: README: Mention defer, adf_ .../drivers/net/mlxsw/devlink_trap_policer.sh | 9 +- .../drivers/net/mlxsw/qos_ets_strict.sh | 12 +- .../drivers/net/mlxsw/qos_max_descriptors.sh | 9 +- .../drivers/net/mlxsw/qos_mc_aware.sh | 12 +- .../drivers/net/mlxsw/sch_red_core.sh | 6 +- tools/testing/selftests/net/fdb_notify.sh | 26 ++-- tools/testing/selftests/net/forwarding/README | 15 ++ .../net/forwarding/bridge_activity_notify.sh | 21 ++- .../net/forwarding/bridge_fdb_local_vlan_0.sh | 65 ++++---- tools/testing/selftests/net/forwarding/lib.sh | 18 +++ .../selftests/net/forwarding/sch_ets_core.sh | 9 +- .../selftests/net/forwarding/sch_red.sh | 12 +- .../selftests/net/forwarding/sch_tbf_core.sh | 6 +- .../net/forwarding/vxlan_bridge_1q_mc_ul.sh | 141 +++++++++--------- .../net/forwarding/vxlan_reserved.sh | 33 ++-- tools/testing/selftests/net/lib.sh | 16 +- .../net/test_vxlan_fdb_changelink.sh | 8 +- .../selftests/net/vlan_bridge_binding.sh | 44 +++--- 18 files changed, 225 insertions(+), 237 deletions(-) -- 2.49.0

3 weeks, 1 day

3
27
0 0

[PATCH net-next 00/15] mptcp: pm: special case for c-flag + luminar endp

by Matthieu Baerts (NGI0)

Here are some patches for the MPTCP PM, including some refactoring that I thought it would be best to send at the end of a cycle to avoid conflicts between net and net-next that could last a few weeks. The most interesting changes are in the first and last patch, the rest are patches refactoring the code & tests to validate the modifications. - Patches 1 & 2: When servers set the C-flag in their MP_CAPABLE to tell clients not to create subflows to the initial address and port -- e.g. a deployment behind a L4 load balancer like a typical CDN deployment -- clients will not use their other endpoints when default settings are used. That's because the in-kernel path-manager uses the 'subflow' endpoints to create subflows only to the initial address and port. The first patch fixes that (for >=v5.14), and the second one validates it. - Patches 3-14: various patches refactoring the code around the in-kernel PM (mainly): split too long functions, rename variables and functions to avoid confusions, reduce structure size, and compare IDs instead of IP addresses. Note that one patch modifies one internal variable used in one BPF selftest. - Patch 15: ability to control endpoints that are used in reaction to a new address announced by the other peer. With that, endpoints can be used only once. Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- Notes: - Patches 1 & 2 are sent to net-next on purpose: to delay a bit the backports, just in case. Plus we are at the end of a cycle, and not to delay the other refactoring patches. - Sorry, I wanted to send this series earlier on, but due to some unrelated issues (and holiday), it got delayed. Most patches are pure refactoring ones. --- Matthieu Baerts (NGI0) (15): mptcp: pm: in-kernel: usable client side with C-flag selftests: mptcp: join: validate C-flag + def limit mptcp: pm: in-kernel: refactor fill_local_addresses_vec mptcp: pm: in-kernel: refactor fill_remote_addresses_vec mptcp: pm: rename 'subflows' to 'extra_subflows' mptcp: pm: in-kernel: rename 'subflows_max' to 'limit_extra_subflows' mptcp: pm: in-kernel: rename 'add_addr_signal_max' to 'endp_signal_max' mptcp: pm: in-kernel: rename 'add_addr_accept_max' to 'limit_add_addr_accepted' mptcp: pm: in-kernel: rename 'local_addr_max' to 'endp_subflow_max' mptcp: pm: in-kernel: rename 'local_addr_list' to 'endp_list' mptcp: pm: in-kernel: rename 'addrs' to 'endpoints' mptcp: pm: in-kernel: remove stale_loss_cnt mptcp: pm: in-kernel: reduce pernet struct size mptcp: pm: in-kernel: compare IDs instead of addresses mptcp: pm: in-kernel: add laminar endpoints include/uapi/linux/mptcp.h | 11 +- net/mptcp/pm.c | 32 +- net/mptcp/pm_kernel.c | 569 ++++++++++++++-------- net/mptcp/pm_userspace.c | 2 +- net/mptcp/protocol.h | 21 +- net/mptcp/sockopt.c | 22 +- tools/testing/selftests/bpf/progs/mptcp_subflow.c | 2 +- tools/testing/selftests/net/mptcp/mptcp_join.sh | 11 + 8 files changed, 441 insertions(+), 229 deletions(-) --- base-commit: a1f1f2422e098485b09e55a492de05cf97f9954d change-id: 20250925-net-next-mptcp-c-flag-laminar-f8442e4d4bd9 Best regards, -- Matthieu Baerts (NGI0) <matttbe(a)kernel.org>

3 weeks, 1 day

2
16
0 0

[PATCH RFC bpf-next v2 0/5] Add the the capability to load HW RX checsum in eBPF programs

by Lorenzo Bianconi

Introduce bpf_xdp_metadata_rx_checksum() kfunc in order to load the HW RX cheksum results in the eBPF program binded to the NIC. Implement xmo_rx_checksum callback for veth and ice drivers. Please note ice support changes are just compile-tested at the moment. --- Changes in RFC v2: - Squash patch 1/6 and 2/6 - Introduce enum xdp_checksum definitions - Rework ice support to reuse ice_rx_csum codebase --- Lorenzo Bianconi (5): netlink: specs: Add XDP RX checksum capability to XDP metadata specs net: veth: Add xmo_rx_checksum callback to veth driver net: ice: Add xmo_rx_checksum callback selftests/bpf: Add selftest support for bpf_xdp_metadata_rx_checksum selftests/bpf: Add bpf_xdp_metadata_rx_checksum support to xdp_hw_metadat prog Documentation/netlink/specs/netdev.yaml | 5 + drivers/net/ethernet/intel/ice/ice_base.c | 1 + drivers/net/ethernet/intel/ice/ice_txrx.h | 1 + drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 125 +++++++++++++-------- drivers/net/veth.c | 20 ++++ include/net/xdp.h | 14 +++ net/core/xdp.c | 29 +++++ .../selftests/bpf/prog_tests/xdp_metadata.c | 7 ++ .../testing/selftests/bpf/progs/xdp_hw_metadata.c | 7 ++ tools/testing/selftests/bpf/progs/xdp_metadata.c | 1 + tools/testing/selftests/bpf/xdp_hw_metadata.c | 27 +++++ tools/testing/selftests/bpf/xdp_metadata.h | 13 +++ 12 files changed, 206 insertions(+), 44 deletions(-) --- base-commit: 5e3fee34f626a8cb8715f5b5409416c481714ebf change-id: 20250925-bpf-xdp-meta-rxcksum-900685e2909d Best regards, -- Lorenzo Bianconi <lorenzo(a)kernel.org>

3 weeks, 1 day

5
17
0 0

[PATCH v2] selftest: net: Fix error message if empty variable

by Alessandro Zanni

Fix to avoid cases where the `res` shell variable is empty in script comparisons. The comparison has been modified into string comparison to handle other possible values the variable could assume. The issue can be reproduced with the command: make kselftest TARGETS=net It solves the error: ./tfo_passive.sh: line 98: [: -eq: unary operator expected Signed-off-by: Alessandro Zanni <alessandro.zanni87(a)gmail.com> --- Notes: v2: edit condition to handle strings tools/testing/selftests/net/tfo_passive.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/tfo_passive.sh b/tools/testing/selftests/net/tfo_passive.sh index 80bf11fdc046..a4550511830a 100755 --- a/tools/testing/selftests/net/tfo_passive.sh +++ b/tools/testing/selftests/net/tfo_passive.sh @@ -95,7 +95,7 @@ wait res=$(cat $out_file) rm $out_file -if [ $res -eq 0 ]; then +if [ "$res" = "0" ]; then echo "got invalid NAPI ID from passive TFO socket" cleanup_ns exit 1 -- 2.43.0

3 weeks, 1 day

3
2
0 0

[PATCH net-next] selftests: drv-net: Enable BTF

by Stanislav Fomichev

Commit fec2e55bdef ("selftests: drv-net: Pull data before parsing headers") added __ksym external symbol to xdp_native.bpf.c which now requires a kernel with BTF. Enable BTF for driver selftests. Before: # TAP version 13 # 1..10 # # Exception| Traceback (most recent call last): # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/ksft.py", line 244, in ksft_run # # Exception| case(*args) # # Exception| ~~~~^^^^^^^ # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 231, in test_xdp_native_pass_sb # # Exception| _test_pass(cfg, bpf_info, 256) # # Exception| ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 209, in _test_pass # # Exception| prog_info = _load_xdp_prog(cfg, bpf_info) # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 114, in _load_xdp_prog # # Exception| cmd( # # Exception| ~~~^ # # Exception| f"ip link set dev {cfg.ifname} mtu {bpf_info.mtu} xdpdrv obj {abs_path} sec {bpf_info.xdp_sec}", # # Exception| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ # # Exception| shell=True # # Exception| ^^^^^^^^^^ # # Exception| ) # # Exception| ^ # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/utils.py", line 75, in __init__ # # Exception| self.process(terminate=False, fail=fail, timeout=timeout) # # Exception| ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/utils.py", line 95, in process # # Exception| raise CmdExitFailure("Command failed: %s\nSTDOUT: %s\nSTDERR: %s" % # # Exception| (self.proc.args, stdout, stderr), self) # # Exception| net.lib.py.utils.CmdExitFailure: Command failed: ip link set dev eni30773np1 mtu 1500 xdpdrv obj /home/sdf/src/linux/tools/testing/selftests/net/lib/xdp_native.bpf.o sec xdp # # Exception| STDOUT: b'' # # Exception| STDERR: b"libbpf: kernel BTF is missing at '/sys/kernel/btf/vmlinux', was CONFIG_DEBUG_INFO_BTF enabled?\nlibbpf: failed to find '.BTF' ELF section in /lib/modules/6.17.0-rc6-virtme/build/vmlinux\nlibbpf: failed to find valid kernel BTF\nlib bpf: Error loading vmlinux BTF: -3\nlibbpf: failed to load object '/home/sdf/src/linux/tools/testing/selftests/net/lib/xdp_native.bpf.o'\n" # not ok 1 xdp.test_xdp_native_pass_sb ... After: # TAP version 13 # 1..10 # ok 1 xdp.test_xdp_native_pass_sb # ok 2 xdp.test_xdp_native_pass_mb # ok 3 xdp.test_xdp_native_drop_sb # ok 4 xdp.test_xdp_native_drop_mb # ok 5 xdp.test_xdp_native_tx_sb # ok 6 xdp.test_xdp_native_tx_mb # # Ignoring SIGTERM (cnt: 2), already exiting... # # Ignoring SIGTERM (cnt: 3), already exiting... # # Exception| Traceback (most recent call last): # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/ksft.py", line 244, in ksft_run # # Exception| case(*args) # # Exception| ~~~~^^^^^^^ # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 506, in test_xdp_native_adjst_taa # # Exception| res = _test_xdp_native_tail_adjst( # # Exception| cfg, # # Exception| pkt_sz_lst, # # Exception| offset_lst, # # Exception| ) # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 467, in _test_xdp_native_tail_adt # # Exception| recvd_str = _exchg_udp(cfg, port, test_str) # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/drivers/net/./xdp.py", line 72, in _exchg_udp # # Exception| with bkg(rx_udp_cmd, exit_wait=True) as nc: # # Exception| ~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^ # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/utils.py", line 137, in __exit__ # # Exception| return self.process(terminate=terminate, fail=self.check_fail) # # Exception| ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/utils.py", line 85, in process # # Exception| stdout, stderr = self.proc.communicate(timeout) # # Exception| ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^ # # Exception| File "/usr/lib/python3.13/subprocess.py", line 1222, in communicate # # Exception| stdout, stderr = self._communicate(input, endtime, timeout) # # Exception| ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^ # # Exception| File "/usr/lib/python3.13/subprocess.py", line 2128, in _communicate # # Exception| ready = selector.select(timeout) # # Exception| File "/usr/lib/python3.13/selectors.py", line 398, in select # # Exception| fd_event_list = self._selector.poll(timeout) # # Exception| File "/home/sdf/src/linux/tools/testing/selftests/net/lib/py/ksft.py", line 208, in _ksft_intr # # Exception| raise KsftTerminate() # # Exception| net.lib.py.ksft.KsftTerminate # # Stopping tests due to KsftTerminate. # not ok 7 xdp.test_xdp_native_adjst_tail_grow_data # # Totals: pass:6 fail:1 xfail:0 xpass:0 skip:0 error:0 Signed-off-by: Stanislav Fomichev <sdf(a)fomichev.me> --- tools/testing/selftests/drivers/net/config | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/drivers/net/config b/tools/testing/selftests/drivers/net/config index f27172ddee0a..da5a5a94fa6a 100644 --- a/tools/testing/selftests/drivers/net/config +++ b/tools/testing/selftests/drivers/net/config @@ -5,3 +5,5 @@ CONFIG_NETCONSOLE=m CONFIG_NETCONSOLE_DYNAMIC=y CONFIG_NETCONSOLE_EXTENDED_LOG=y CONFIG_XDP_SOCKETS=y +CONFIG_DEBUG_INFO_BTF=y +CONFIG_DEBUG_INFO_BTF_MODULES=n -- 2.51.0

3 weeks, 1 day

2
1
0 0

[PATCH v3 00/36] sparc64: vdso: Switch to the generic vDSO library

by Thomas Weißschuh

The generic vDSO provides a lot common functionality shared between different architectures. SPARC is the last architecture not using it, preventing some necessary code cleanup. Make use of the generic infrastructure. Follow-up to and replacement for Arnd's SPARC vDSO removal patches: https://lore.kernel.org/lkml/20250707144726.4008707-1-arnd@kernel.org/ Tested on a Niagara T4 and QEMU. This has a semantic conflict with my series "vdso: Reject absolute relocations during build". The last patch of this series expects all users of the generic vDSO library to use the vdsocheck tool. This is not the case (yet) for SPARC64. I do have the patches for the integration, the specifics will depend on which series is applied first. Based on tip/timers/vdso. [0] https://lore.kernel.org/lkml/20250812-vdso-absolute-reloc-v4-0-61a8b615e5ec… Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> --- Changes in v3: - Allocate vDSO data pages dynamically (and lots of preparations for that) - Drop clock_getres() - Fix 32bit clock_gettime() syscall fallback - Link to v2: https://lore.kernel.org/r/20250815-vdso-sparc64-generic-2-v2-0-b5ff80672347… Changes in v2: - Rebase on v6.17-rc1 - Drop RFC state - Fix typo in commit message - Drop duplicate 'select GENERIC_TIME_VSYSCALL' - Merge "sparc64: time: Remove architecture-specific clocksource data" into the main conversion patch. It violated the check in __clocksource_register_scale() - Link to v1: https://lore.kernel.org/r/20250724-vdso-sparc64-generic-2-v1-0-e376a3bd24d1… --- Arnd Bergmann (1): clocksource: remove ARCH_CLOCKSOURCE_DATA Thomas Weißschuh (35): selftests: vDSO: vdso_test_correctness: Handle different tv_usec types arm64: vDSO: getrandom: Explicitly include asm/alternative.h arm64: vDSO: gettimeofday: Explicitly include vdso/clocksource.h arm64: vDSO: compat_gettimeofday: Add explicit includes ARM: vdso: gettimeofday: Add explicit includes powerpc/vdso/gettimeofday: Explicitly include vdso/time32.h powerpc/vdso: Explicitly include asm/cputable.h and asm/feature-fixups.h LoongArch: vDSO: Explicitly include asm/vdso/vdso.h MIPS: vdso: Add include guard to asm/vdso/vdso.h MIPS: vdso: Explicitly include asm/vdso/vdso.h random: vDSO: Add explicit includes vdso/gettimeofday: Add explicit includes vdso/helpers: Explicitly include vdso/processor.h vdso/datapage: Remove inclusion of gettimeofday.h vdso/datapage: Trim down unnecessary includes random: vDSO: trim vDSO includes random: vDSO: remove ifdeffery random: vDSO: split out datapage update into helper functions random: vDSO: only access vDSO datapage after random_init() s390/time: Set up vDSO datapage later vdso/datastore: Reduce scope of some variables in vvar_fault() vdso/datastore: Drop inclusion of linux/mmap_lock.h vdso/datastore: Map pages through struct page vdso/datastore: Allocate data pages dynamically sparc64: vdso: Link with -z noexecstack sparc64: vdso: Remove obsolete "fake section table" reservation sparc64: vdso: Replace code patching with runtime conditional sparc64: vdso: Move hardware counter read into header sparc64: vdso: Move syscall fallbacks into header sparc64: vdso: Introduce vdso/processor.h sparc64: vdso: Switch to the generic vDSO library sparc64: vdso2c: Drop sym_vvar_start handling sparc64: vdso2c: Remove symbol handling sparc64: vdso: Implement clock_gettime64() clocksource: drop include of asm/clocksource.h from linux/clocksource.h arch/arm/include/asm/vdso/gettimeofday.h | 2 + arch/arm64/include/asm/vdso/compat_gettimeofday.h | 3 + arch/arm64/include/asm/vdso/gettimeofday.h | 2 + arch/arm64/kernel/vdso/vgetrandom.c | 2 + arch/loongarch/kernel/process.c | 1 + arch/loongarch/kernel/vdso.c | 1 + arch/mips/include/asm/vdso/vdso.h | 5 + arch/mips/kernel/vdso.c | 1 + arch/powerpc/include/asm/vdso/gettimeofday.h | 1 + arch/powerpc/include/asm/vdso/processor.h | 3 + arch/s390/kernel/time.c | 4 +- arch/sparc/Kconfig | 3 +- arch/sparc/include/asm/clocksource.h | 9 - arch/sparc/include/asm/processor.h | 3 + arch/sparc/include/asm/processor_32.h | 2 - arch/sparc/include/asm/processor_64.h | 25 -- arch/sparc/include/asm/vdso.h | 2 - arch/sparc/include/asm/vdso/clocksource.h | 10 + arch/sparc/include/asm/vdso/gettimeofday.h | 184 ++++++++++ arch/sparc/include/asm/vdso/processor.h | 41 +++ arch/sparc/include/asm/vdso/vsyscall.h | 10 + arch/sparc/include/asm/vvar.h | 75 ---- arch/sparc/kernel/Makefile | 1 - arch/sparc/kernel/time_64.c | 6 +- arch/sparc/kernel/vdso.c | 69 ---- arch/sparc/vdso/Makefile | 8 +- arch/sparc/vdso/vclock_gettime.c | 380 ++------------------- arch/sparc/vdso/vdso-layout.lds.S | 26 +- arch/sparc/vdso/vdso.lds.S | 2 - arch/sparc/vdso/vdso2c.c | 24 -- arch/sparc/vdso/vdso2c.h | 45 +-- arch/sparc/vdso/vdso32/vdso32.lds.S | 4 +- arch/sparc/vdso/vma.c | 274 +-------------- drivers/char/random.c | 75 ++-- include/linux/clocksource.h | 8 - include/linux/vdso_datastore.h | 6 + include/vdso/datapage.h | 23 +- include/vdso/helpers.h | 1 + init/main.c | 2 + kernel/time/Kconfig | 4 - lib/vdso/datastore.c | 73 ++-- lib/vdso/getrandom.c | 3 + lib/vdso/gettimeofday.c | 17 + .../testing/selftests/vDSO/vdso_test_correctness.c | 8 +- 44 files changed, 451 insertions(+), 997 deletions(-) --- base-commit: 5f84f6004e298bd41c9e4ed45c18447954b1dce6 change-id: 20250722-vdso-sparc64-generic-2-25f2e058e92c Best regards, -- Thomas Weißschuh <thomas.weissschuh(a)linutronix.de>

3 weeks, 1 day

6
49
0 0

[PATCH v2] selftests/iommu: prevent use of uninitialized variable

by Alessandro Zanni

Fix to avoid the usage of the `res` variable uninitialized in the following macro expansions. It solves the following warning: In function ‘iommufd_viommu_vdevice_alloc’, inlined from ‘wrapper_iommufd_viommu_vdevice_alloc’ at iommufd.c:2889:1: ../kselftest_harness.h:760:12: warning: ‘ret’ may be used uninitialized [-Wmaybe-uninitialized] 760 | if (!(__exp _t __seen)) { \ | ^ ../kselftest_harness.h:513:9: note: in expansion of macro ‘__EXPECT’ 513 | __EXPECT(expected, #expected, seen, #seen, ==, 1) | ^~~~~~~~ iommufd_utils.h:1057:9: note: in expansion of macro ‘ASSERT_EQ’ 1057 | ASSERT_EQ(0, _test_cmd_trigger_vevents(self->fd, dev_id, nvevents)) | ^~~~~~~~~ iommufd.c:2924:17: note: in expansion of macro ‘test_cmd_trigger_vevents’ 2924 | test_cmd_trigger_vevents(dev_id, 3); | ^~~~~~~~~~~~~~~~~~~~~~~~ The issue can be reproduced, building the tests, with the command: make -C tools/testing/selftests TARGETS=iommu Signed-off-by: Alessandro Zanni <alessandro.zanni87(a)gmail.com> --- tools/testing/selftests/iommu/iommufd_utils.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 3c3e08b8c90e..772ca1db6e59 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -1042,15 +1042,13 @@ static int _test_cmd_trigger_vevents(int fd, __u32 dev_id, __u32 nvevents) .dev_id = dev_id, }, }; - int ret; while (nvevents--) { - ret = ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_TRIGGER_VEVENT), - &trigger_vevent_cmd); - if (ret < 0) + if (!ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_TRIGGER_VEVENT), + &trigger_vevent_cmd)) return -1; } - return ret; + return 0; } #define test_cmd_trigger_vevents(dev_id, nvevents) \ -- 2.43.0

3 weeks, 1 day

2
1
0 0

[PATCH v3 00/12] Start porting UML to nolibc

by Benjamin Berg

From: Benjamin Berg <benjamin.berg(a)intel.com> This patchset is an attempt to start a nolibc port of UML. The goal is to port UML to use nolibc in smaller chunks to make the switch more manageable. Using nolibc has the advantage that it is a smaller runtime and it allows us to be in full control about all memory mappings that are done. Another libc on the other hand might map memory unaware of UML, causing collisions with the UML memory layout. Such mappings could even happen before UML has fully initialized (e.g. rseq being mapped into the physical or vmalloc memory areas). There are three parts to this patchset: * Two patches to use tools/include headers instead of kernel headers for userspace files. * A few nolibc fixes and a new NOLIBC_NO_RUNTIME compile flag for it * Finally nolibc build support for UML and switching two files while adding the appropriate support in nolibc itself. v1 of this patchset was https://lore.kernel.org/all/20250915071115.1429196-1-benjamin@sipsolutions.… v2: https://lore.kernel.org/all/20250919153420.727385-1-benjamin@sipsolutions.n… Changes in v3: - sys_ptrace is now not a varadic function - improve printf %m implementation - keep perror as function available with NOLIBC_IGNORE_ERRNO - change syscall guard and fix i386 build Changes in v2: - add sys/uio.h and sys/ptrace.h to nolibc - Use NOLIBC_NO_RUNTIME to disable nolibc startup code - Fix out-of-tree build - various small improvements and cleanups Benjamin Benjamin Berg (12): tools compiler.h: fix __used definition um: use tools/include for user files tools/nolibc/stdio: let perror work when NOLIBC_IGNORE_ERRNO is set tools/nolibc/dirent: avoid errno in readdir_r tools/nolibc: implement %m if errno is not defined tools/nolibc: use __fallthrough__ rather than fallthrough tools/nolibc: add option to disable runtime um: add infrastructure to build files using nolibc um: use nolibc for the --showconfig implementation tools/nolibc: add uio.h with readv and writev tools/nolibc: add ptrace support um: switch ptrace FP register access to nolibc arch/um/Makefile | 38 ++++++++++++--- arch/um/include/shared/init.h | 2 +- arch/um/include/shared/os.h | 2 + arch/um/include/shared/user.h | 6 --- arch/um/kernel/Makefile | 2 +- arch/um/kernel/skas/stub.c | 1 + arch/um/kernel/skas/stub_exe.c | 4 +- arch/um/os-Linux/skas/process.c | 6 +-- arch/um/os-Linux/start_up.c | 4 +- arch/um/scripts/Makefile.rules | 10 +++- arch/x86/um/Makefile | 6 ++- arch/x86/um/os-Linux/Makefile | 5 +- arch/x86/um/os-Linux/registers.c | 20 ++------ arch/x86/um/user-offsets.c | 1 - tools/include/linux/compiler.h | 2 +- tools/include/nolibc/Makefile | 2 + tools/include/nolibc/arch-arm.h | 2 + tools/include/nolibc/arch-arm64.h | 2 + tools/include/nolibc/arch-loongarch.h | 2 + tools/include/nolibc/arch-m68k.h | 2 + tools/include/nolibc/arch-mips.h | 2 + tools/include/nolibc/arch-powerpc.h | 2 + tools/include/nolibc/arch-riscv.h | 2 + tools/include/nolibc/arch-s390.h | 2 + tools/include/nolibc/arch-sh.h | 2 + tools/include/nolibc/arch-sparc.h | 2 + tools/include/nolibc/arch-x86.h | 4 ++ tools/include/nolibc/compiler.h | 4 +- tools/include/nolibc/crt.h | 3 ++ tools/include/nolibc/dirent.h | 6 +-- tools/include/nolibc/nolibc.h | 2 + tools/include/nolibc/stackprotector.h | 2 + tools/include/nolibc/stdio.h | 10 +++- tools/include/nolibc/stdlib.h | 2 + tools/include/nolibc/sys.h | 3 +- tools/include/nolibc/sys/auxv.h | 3 ++ tools/include/nolibc/sys/ptrace.h | 44 ++++++++++++++++++ tools/include/nolibc/sys/uio.h | 49 ++++++++++++++++++++ tools/testing/selftests/nolibc/nolibc-test.c | 11 +++++ 39 files changed, 221 insertions(+), 53 deletions(-) create mode 100644 tools/include/nolibc/sys/ptrace.h create mode 100644 tools/include/nolibc/sys/uio.h -- 2.51.0

3 weeks, 1 day

3
17
0 0

[PATCH v3 0/3] selftests/bpf: Prepare to add -Wsign-compare for bpf selftests

by Mehdi Ben Hadj Khelifa

This series is preparing to add the -Wsign-compare C compilation flag to the Makefile for bpf selftests as requested by a TODO to help avoid implicit type conversions and have predictable behavior. Changelog: Changes from v2: -Split up the patch into a patch series as suggested by vivek -Include only changes to variable types with no casting by my mentor david -Removed the -Wsign-compare in Makefile to avoid compilation errors until adding casting for rest of comparisons. Link:https://lore.kernel.org/bpf/20250924195731.6374-1-mehdi.benhadjkhelifa… Changes from v1: - Fix CI failed builds where it failed due to do missing .c and .h files in my patch for working in mainline. Link:https://lore.kernel.org/bpf/20250924162408.815137-1-mehdi.benhadjkheli… Mehdi Ben Hadj Khelifa (3): selftests/bpf: Prepare to add -Wsign-compare for bpf tests selftests/bpf: Prepare to add -Wsign-compare for bpf tests selftests/bpf: Prepare to add -Wsign-compare for bpf tests tools/testing/selftests/bpf/progs/test_global_func11.c | 2 +- tools/testing/selftests/bpf/progs/test_global_func12.c | 2 +- tools/testing/selftests/bpf/progs/test_global_func13.c | 2 +- tools/testing/selftests/bpf/progs/test_global_func9.c | 2 +- tools/testing/selftests/bpf/progs/test_map_init.c | 2 +- tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c | 2 +- .../selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c | 2 +- tools/testing/selftests/bpf/progs/test_skb_ctx.c | 2 +- tools/testing/selftests/bpf/progs/test_snprintf.c | 2 +- tools/testing/selftests/bpf/progs/test_sockmap_strp.c | 2 +- tools/testing/selftests/bpf/progs/test_tc_tunnel.c | 2 +- tools/testing/selftests/bpf/progs/test_xdp.c | 2 +- tools/testing/selftests/bpf/progs/test_xdp_dynptr.c | 2 +- tools/testing/selftests/bpf/progs/test_xdp_loop.c | 2 +- tools/testing/selftests/bpf/progs/test_xdp_noinline.c | 4 ++-- tools/testing/selftests/bpf/progs/uprobe_multi.c | 4 ++-- .../selftests/bpf/progs/uprobe_multi_session_recursive.c | 5 +++-- .../selftests/bpf/progs/verifier_iterating_callbacks.c | 2 +- 18 files changed, 22 insertions(+), 21 deletions(-) -- 2.51.0

3 weeks, 2 days

4
8
0 0

[PATCH net-next v2 0/8] psp: add a kselftest suite and netdevsim implementation

by Daniel Zahka

Add a basic test suite for drivers that support PSP. Also, add a PSP implementation in the netdevsim driver. The netdevsim implementation does encapsulation and decapsulation of PSP packets, but no crypto. The tests cover the basic usage of the uapi, and demonstrate key exchange and connection setup. The tests and netdevsim support IPv4 and IPv6. Here is an example run on a system with a CX7 NIC. TAP version 13 1..28 ok 1 psp.data_basic_send_v0_ip4 ok 2 psp.data_basic_send_v0_ip6 ok 3 psp.data_basic_send_v1_ip4 ok 4 psp.data_basic_send_v1_ip6 ok 5 psp.data_basic_send_v2_ip4 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-128') ok 6 psp.data_basic_send_v2_ip6 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-128') ok 7 psp.data_basic_send_v3_ip4 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-256') ok 8 psp.data_basic_send_v3_ip6 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-256') ok 9 psp.data_mss_adjust_ip4 ok 10 psp.data_mss_adjust_ip6 ok 11 psp.dev_list_devices ok 12 psp.dev_get_device ok 13 psp.dev_get_device_bad ok 14 psp.dev_rotate ok 15 psp.dev_rotate_spi ok 16 psp.assoc_basic ok 17 psp.assoc_bad_dev ok 18 psp.assoc_sk_only_conn ok 19 psp.assoc_sk_only_mismatch ok 20 psp.assoc_sk_only_mismatch_tx ok 21 psp.assoc_sk_only_unconn ok 22 psp.assoc_version_mismatch ok 23 psp.assoc_twice ok 24 psp.data_send_bad_key ok 25 psp.data_send_disconnect ok 26 psp.data_stale_key ok 27 psp.removal_device_rx # XFAIL Test only works on netdevsim ok 28 psp.removal_device_bi # XFAIL Test only works on netdevsim # Totals: pass:22 fail:0 xfail:2 xpass:0 skip:4 error:0 # # Responder logs (0): # STDERR: # Set PSP enable on device 1 to 0x3 # Set PSP enable on device 1 to 0x0 CHANGES: v2: - fix pylint warnings - insert CONFIG_INET_PSP in alphebetical order - use branch to skip all tests - fix compilation error when CONFIG_INET_PSP is not set v1: https://lore.kernel.org/netdev/20250924194959.2845473-1-daniel.zahka@gmail.… Jakub Kicinski (8): netdevsim: a basic test PSP implementation selftests: drv-net: base device access API test selftests: drv-net: add PSP responder selftests: drv-net: psp: add basic data transfer and key rotation tests selftests: drv-net: psp: add association tests selftests: drv-net: psp: add connection breaking tests selftests: drv-net: psp: add test for auto-adjusting TCP MSS selftests: drv-net: psp: add tests for destroying devices drivers/net/netdevsim/Makefile | 4 + drivers/net/netdevsim/netdev.c | 55 +- drivers/net/netdevsim/netdevsim.h | 33 + drivers/net/netdevsim/psp.c | 234 +++++++ net/core/skbuff.c | 1 + .../testing/selftests/drivers/net/.gitignore | 1 + tools/testing/selftests/drivers/net/Makefile | 10 + tools/testing/selftests/drivers/net/config | 1 + .../drivers/net/hw/lib/py/__init__.py | 4 +- .../selftests/drivers/net/lib/py/__init__.py | 4 +- .../selftests/drivers/net/lib/py/env.py | 5 + tools/testing/selftests/drivers/net/psp.py | 593 ++++++++++++++++++ .../selftests/drivers/net/psp_responder.c | 483 ++++++++++++++ .../testing/selftests/net/lib/py/__init__.py | 2 +- tools/testing/selftests/net/lib/py/ksft.py | 10 + tools/testing/selftests/net/lib/py/ynl.py | 5 + 16 files changed, 1432 insertions(+), 13 deletions(-) create mode 100644 drivers/net/netdevsim/psp.c create mode 100755 tools/testing/selftests/drivers/net/psp.py create mode 100644 tools/testing/selftests/drivers/net/psp_responder.c -- 2.47.3

3 weeks, 2 days

1
8
0 0

[PATCH v2] selftests/kexec: Ignore selftest binary

by Sohil Mehta

From: Dylan Yudaken <dyudaken(a)gmail.com> Add a .gitignore for the test case build object. Signed-off-by: Dylan Yudaken <dyudaken(a)gmail.com> Signed-off-by: Sohil Mehta <sohil.mehta(a)intel.com> Reviewed-by: Simon Horman <horms(a)kernel.org> --- The binary creates some noise. The patch to fix that seems to have fallen through the cracks. Sending another revision with an expanded Cc list. v2: - Pick up the review tag v1: https://lore.kernel.org/all/20250623232549.3263273-1-dyudaken@gmail.com/ --- tools/testing/selftests/kexec/.gitignore | 2 ++ 1 file changed, 2 insertions(+) create mode 100644 tools/testing/selftests/kexec/.gitignore diff --git a/tools/testing/selftests/kexec/.gitignore b/tools/testing/selftests/kexec/.gitignore new file mode 100644 index 000000000000..5f3d9e089ae8 --- /dev/null +++ b/tools/testing/selftests/kexec/.gitignore @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +test_kexec_jump -- 2.43.0

3 weeks, 2 days

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[PATCH v10 00/21] TDX KVM selftests

by Sagi Shahar

This is v10 of the TDX selftests. This series is based on v6.17-rc4 and has a dependency on "KVM: TDX: Force split irqchip for TDX at irqchip creation time" [1] Changes from v9 [2]: - Rebased on top of v6.17-rc4. - Addressed the comments from v9. - Removed special handling for split irqchip in the test code in favor for the kvm fix in [1]. - Removed outdated support for VM memory not backed by guest_memfd. - Split "KVM: selftests: Hook TDX support to vm and vcpu creation" into 4 separate patches. [1] https://lore.kernel.org/lkml/20250904062007.622530-1-sagis@google.com/ [2] https://lore.kernel.org/lkml/20250821042915.3712925-1-sagis@google.com/ Ackerley Tng (2): KVM: selftests: Add helpers to init TDX memory and finalize VM KVM: selftests: Add ucall support for TDX Erdem Aktas (2): KVM: selftests: Add TDX boot code KVM: selftests: Add support for TDX TDCALL from guest Isaku Yamahata (2): KVM: selftests: Update kvm_init_vm_address_properties() for TDX KVM: selftests: TDX: Use KVM_TDX_CAPABILITIES to validate TDs' attribute configuration Sagi Shahar (15): KVM: selftests: Allocate pgd in virt_map() as necessary KVM: selftests: Expose functions to get default sregs values KVM: selftests: Expose function to allocate guest vCPU stack KVM: selftests: Expose segment definitons to assembly files KVM: selftests: Add kbuild definitons KVM: selftests: Define structs to pass parameters to TDX boot code KVM: selftests: Set up TDX boot code region KVM: selftests: Set up TDX boot parameters region KVM: selftests: Add helper to initialize TDX VM KVM: selftests: Call TDX init when creating a new TDX vm KVM: selftests: Setup memory regions for TDX on vm creation KVM: selftests: Call KVM_TDX_INIT_VCPU when creating a new TDX vcpu KVM: selftests: Set entry point for TDX guest code KVM: selftests: Add wrapper for TDX MMIO from guest KVM: selftests: Add TDX lifecycle test tools/include/linux/kbuild.h | 18 + tools/testing/selftests/kvm/Makefile.kvm | 32 ++ .../selftests/kvm/include/x86/processor.h | 35 ++ .../selftests/kvm/include/x86/processor_asm.h | 12 + .../selftests/kvm/include/x86/tdx/td_boot.h | 74 ++++ .../kvm/include/x86/tdx/td_boot_asm.h | 16 + .../selftests/kvm/include/x86/tdx/tdcall.h | 34 ++ .../selftests/kvm/include/x86/tdx/tdx.h | 14 + .../selftests/kvm/include/x86/tdx/tdx_util.h | 86 +++++ .../testing/selftests/kvm/include/x86/ucall.h | 4 +- tools/testing/selftests/kvm/lib/kvm_util.c | 10 +- .../testing/selftests/kvm/lib/x86/processor.c | 91 +++-- .../selftests/kvm/lib/x86/tdx/td_boot.S | 60 +++ .../kvm/lib/x86/tdx/td_boot_offsets.c | 21 ++ .../selftests/kvm/lib/x86/tdx/tdcall.S | 93 +++++ .../kvm/lib/x86/tdx/tdcall_offsets.c | 16 + tools/testing/selftests/kvm/lib/x86/tdx/tdx.c | 23 ++ .../selftests/kvm/lib/x86/tdx/tdx_util.c | 354 ++++++++++++++++++ tools/testing/selftests/kvm/lib/x86/ucall.c | 45 ++- tools/testing/selftests/kvm/x86/tdx_vm_test.c | 31 ++ 20 files changed, 1032 insertions(+), 37 deletions(-) create mode 100644 tools/include/linux/kbuild.h create mode 100644 tools/testing/selftests/kvm/include/x86/processor_asm.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/td_boot.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/td_boot_asm.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/tdcall.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/tdx.h create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/td_boot.S create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/td_boot_offsets.c create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdcall.S create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdcall_offsets.c create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdx.c create mode 100644 tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c create mode 100644 tools/testing/selftests/kvm/x86/tdx_vm_test.c -- 2.51.0.338.gd7d06c2dae-goog

3 weeks, 2 days

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[PATCH v2 net-next 00/14] AccECN protocol case handling series

by chia-yu.chang＠nokia-bell-labs.com

From: Chia-Yu Chang <chia-yu.chang(a)nokia-bell-labs.com> Hello, Plesae find the v2 AccECN case handling patch series, which covers several excpetional case handling of Accurate ECN spec (RFC9768), adds new identifiers to be used by CC modules, adds ecn_delta into rate_sample, and keeps the ACE counter for computation, etc. This patch series is part of the full AccECN patch series, which is available at https://github.com/L4STeam/linux-net-next/commits/upstream_l4steam/ Best regards, Chia-Yu --- Chia-Yu Chang (11): tcp: L4S ECT(1) identifier and NEEDS_ACCECN for CC modules tcp: disable RFC3168 fallback identifier for CC modules tcp: accecn: handle unexpected AccECN negotiation feedback tcp: accecn: retransmit downgraded SYN in AccECN negotiation tcp: move increment of num_retrans tcp: accecn: retransmit SYN/ACK without AccECN option or non-AccECN SYN/ACK tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion tcp: accecn: fallback outgoing half link to non-AccECN tcp: accecn: verify ACE counter in 1st ACK after AccECN negotiation tcp: accecn: stop sending AccECN opt when loss ACK w/ option tcp: accecn: enable AccECN Ilpo Järvinen (3): tcp: try to avoid safer when ACKs are thinned gro: flushing when CWR is set negatively affects AccECN tcp: accecn: Add ece_delta to rate_sample .../networking/net_cachelines/tcp_sock.rst | 1 + include/linux/tcp.h | 4 +- include/net/inet_ecn.h | 20 +++- include/net/tcp.h | 30 +++++- include/net/tcp_ecn.h | 85 ++++++++++++----- net/ipv4/sysctl_net_ipv4.c | 2 +- net/ipv4/tcp.c | 2 + net/ipv4/tcp_cong.c | 9 +- net/ipv4/tcp_input.c | 91 +++++++++++++------ net/ipv4/tcp_minisocks.c | 40 +++++--- net/ipv4/tcp_offload.c | 3 +- net/ipv4/tcp_output.c | 38 +++++--- 12 files changed, 239 insertions(+), 86 deletions(-) -- 2.34.1

3 weeks, 2 days

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[PATCH] selftest: net: Fix error message if empty variable

by Alessandro Zanni

Fix to avoid cases where the `res` shell variable is empty in script comparisons. The issue can be reproduced with the command: make kselftest TARGETS=net It solves the error: ./tfo_passive.sh: line 98: [: -eq: unary operator expected Signed-off-by: Alessandro Zanni <alessandro.zanni87(a)gmail.com> --- tools/testing/selftests/net/tfo_passive.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/tfo_passive.sh b/tools/testing/selftests/net/tfo_passive.sh index 80bf11fdc046..2655931b2396 100755 --- a/tools/testing/selftests/net/tfo_passive.sh +++ b/tools/testing/selftests/net/tfo_passive.sh @@ -95,7 +95,7 @@ wait res=$(cat $out_file) rm $out_file -if [ $res -eq 0 ]; then +if [ -n "$res" ] && [ $res -eq 0 ]; then echo "got invalid NAPI ID from passive TFO socket" cleanup_ns exit 1 -- 2.43.0

3 weeks, 2 days

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[PATCH bpf-next v2] selftests/bpf: Add -Wsign-compare C compilation flag

by Mehdi Ben Hadj Khelifa

-Change all the source files and the corresponding headers to having matching sign comparisons. Signed-off-by: Mehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa(a)gmail.com> --- Changelog: Changes since v1: - Fix CI failed builds where it failed due to do missing .c and .h files in my patch for working in mainline. https://lore.kernel.org/bpf/20250924162408.815137-1-mehdi.benhadjkhelifa@gm… --- tools/lib/bpf/usdt.bpf.h | 4 ++-- tools/testing/selftests/bpf/Makefile | 4 ++-- tools/testing/selftests/bpf/bpf_arena_htab.h | 2 +- tools/testing/selftests/bpf/progs/arena_list.c | 2 +- .../bpf/progs/bench_local_storage_create.c | 2 +- tools/testing/selftests/bpf/progs/bind_perm.c | 2 +- tools/testing/selftests/bpf/progs/bpf_cc_cubic.c | 2 +- tools/testing/selftests/bpf/progs/bpf_cubic.c | 8 ++++---- .../bpf/progs/bpf_iter_bpf_percpu_array_map.c | 2 +- .../selftests/bpf/progs/bpf_iter_task_stack.c | 2 +- .../testing/selftests/bpf/progs/bpf_iter_tasks.c | 3 ++- .../selftests/bpf/progs/bpf_iter_vma_offset.c | 4 ++-- .../testing/selftests/bpf/progs/bpf_qdisc_fifo.c | 2 +- tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c | 4 ++-- .../bpf/progs/cgroup_getset_retval_getsockopt.c | 6 +++--- .../selftests/bpf/progs/connect4_dropper.c | 2 +- .../selftests/bpf/progs/cpumask_success.c | 4 ++-- .../testing/selftests/bpf/progs/dynptr_success.c | 8 ++++---- tools/testing/selftests/bpf/progs/iters.c | 16 ++++++++-------- .../selftests/bpf/progs/kfunc_call_test.c | 2 +- tools/testing/selftests/bpf/progs/linked_list.c | 10 +++++----- tools/testing/selftests/bpf/progs/lsm.c | 2 +- .../testing/selftests/bpf/progs/map_in_map_btf.c | 2 +- tools/testing/selftests/bpf/progs/map_ptr_kern.c | 2 +- .../selftests/bpf/progs/mmap_inner_array.c | 2 +- .../testing/selftests/bpf/progs/mptcp_subflow.c | 2 +- .../selftests/bpf/progs/netif_receive_skb.c | 4 ++-- tools/testing/selftests/bpf/progs/profiler.inc.h | 6 +++--- .../testing/selftests/bpf/progs/rcu_read_lock.c | 4 ++-- .../bpf/progs/sk_storage_omem_uncharge.c | 6 +++--- .../selftests/bpf/progs/sockopt_inherit.c | 4 ++-- tools/testing/selftests/bpf/progs/sockopt_sk.c | 4 ++-- tools/testing/selftests/bpf/progs/strobemeta.h | 2 +- .../selftests/bpf/progs/task_local_data.bpf.h | 6 +++--- .../selftests/bpf/progs/test_bpf_cookie.c | 2 +- .../testing/selftests/bpf/progs/test_check_mtu.c | 4 ++-- .../selftests/bpf/progs/test_core_extern.c | 2 +- .../testing/selftests/bpf/progs/test_get_xattr.c | 4 ++-- .../selftests/bpf/progs/test_global_func11.c | 2 +- .../selftests/bpf/progs/test_global_func12.c | 2 +- .../selftests/bpf/progs/test_global_func13.c | 2 +- .../selftests/bpf/progs/test_global_func14.c | 2 +- .../selftests/bpf/progs/test_global_func9.c | 2 +- .../selftests/bpf/progs/test_lwt_seg6local.c | 4 ++-- .../testing/selftests/bpf/progs/test_map_init.c | 2 +- .../selftests/bpf/progs/test_parse_tcp_hdr_opt.c | 2 +- .../bpf/progs/test_parse_tcp_hdr_opt_dynptr.c | 2 +- .../selftests/bpf/progs/test_pkt_access.c | 6 +++--- .../testing/selftests/bpf/progs/test_seg6_loop.c | 4 ++-- tools/testing/selftests/bpf/progs/test_skb_ctx.c | 2 +- .../testing/selftests/bpf/progs/test_snprintf.c | 2 +- .../selftests/bpf/progs/test_sockmap_kern.h | 2 +- .../selftests/bpf/progs/test_sockmap_strp.c | 2 +- .../testing/selftests/bpf/progs/test_tc_tunnel.c | 2 +- tools/testing/selftests/bpf/progs/test_xdp.c | 2 +- .../selftests/bpf/progs/test_xdp_dynptr.c | 2 +- .../testing/selftests/bpf/progs/test_xdp_loop.c | 2 +- .../selftests/bpf/progs/test_xdp_noinline.c | 4 ++-- tools/testing/selftests/bpf/progs/udp_limit.c | 2 +- tools/testing/selftests/bpf/progs/uprobe_multi.c | 4 ++-- .../bpf/progs/uprobe_multi_session_recursive.c | 5 +++-- .../selftests/bpf/progs/verifier_arena_large.c | 4 ++-- .../bpf/progs/verifier_iterating_callbacks.c | 2 +- 63 files changed, 109 insertions(+), 107 deletions(-) diff --git a/tools/lib/bpf/usdt.bpf.h b/tools/lib/bpf/usdt.bpf.h index 43deb05a5197..59095c7f5b65 100644 --- a/tools/lib/bpf/usdt.bpf.h +++ b/tools/lib/bpf/usdt.bpf.h @@ -148,7 +148,7 @@ int bpf_usdt_arg_size(struct pt_regs *ctx, __u64 arg_num) if (arg_num >= BPF_USDT_MAX_ARG_CNT) return -ENOENT; barrier_var(arg_num); - if (arg_num >= spec->arg_cnt) + if (arg_num >= (__u64)spec->arg_cnt) return -ENOENT; arg_spec = &spec->args[arg_num]; @@ -184,7 +184,7 @@ int bpf_usdt_arg(struct pt_regs *ctx, __u64 arg_num, long *res) if (arg_num >= BPF_USDT_MAX_ARG_CNT) return -ENOENT; barrier_var(arg_num); - if (arg_num >= spec->arg_cnt) + if (arg_num >= (__u64)spec->arg_cnt) return -ENOENT; arg_spec = &spec->args[arg_num]; diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 0b6ee902bce5..1b3c0c9388cc 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -453,8 +453,8 @@ BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ -I$(abspath $(OUTPUT)/../usr/include) \ -std=gnu11 \ -fno-strict-aliasing \ - -Wno-compare-distinct-pointer-types -# TODO: enable me -Wsign-compare + -Wno-compare-distinct-pointer-types \ + -Wsign-compare CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) diff --git a/tools/testing/selftests/bpf/bpf_arena_htab.h b/tools/testing/selftests/bpf/bpf_arena_htab.h index acc01a876668..ad77514c3cb1 100644 --- a/tools/testing/selftests/bpf/bpf_arena_htab.h +++ b/tools/testing/selftests/bpf/bpf_arena_htab.h @@ -42,7 +42,7 @@ static hashtab_elem_t *lookup_elem_raw(arena_list_head_t *head, __u32 hash, int hashtab_elem_t *l; list_for_each_entry(l, head, hash_node) - if (l->hash == hash && l->key == key) + if ((__u32)l->hash == hash && l->key == key) return l; return NULL; diff --git a/tools/testing/selftests/bpf/progs/arena_list.c b/tools/testing/selftests/bpf/progs/arena_list.c index 3a2ddcacbea6..02676f77a4cf 100644 --- a/tools/testing/selftests/bpf/progs/arena_list.c +++ b/tools/testing/selftests/bpf/progs/arena_list.c @@ -50,7 +50,7 @@ int arena_list_add(void *ctx) list_head = &global_head; - for (i = zero; i < cnt && can_loop; i++) { + for (i = zero; i < (__u64)cnt && can_loop; i++) { struct elem __arena *n = bpf_alloc(sizeof(*n)); test_val++; diff --git a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c index c8ec0d0368e4..2b23e59bc04a 100644 --- a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c +++ b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c @@ -44,7 +44,7 @@ int BPF_PROG(sched_process_fork, struct task_struct *parent, struct task_struct { struct storage *stg; - if (parent->tgid != bench_pid) + if ((__u32)parent->tgid != bench_pid) return 0; stg = bpf_task_storage_get(&task_storage_map, child, NULL, diff --git a/tools/testing/selftests/bpf/progs/bind_perm.c b/tools/testing/selftests/bpf/progs/bind_perm.c index 7bd2a027025d..e629909c97b6 100644 --- a/tools/testing/selftests/bpf/progs/bind_perm.c +++ b/tools/testing/selftests/bpf/progs/bind_perm.c @@ -7,7 +7,7 @@ #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> -static __always_inline int bind_prog(struct bpf_sock_addr *ctx, int family) +static __always_inline int bind_prog(struct bpf_sock_addr *ctx, __u32 family) { struct bpf_sock *sk; diff --git a/tools/testing/selftests/bpf/progs/bpf_cc_cubic.c b/tools/testing/selftests/bpf/progs/bpf_cc_cubic.c index 4e51785e7606..76b4184713e2 100644 --- a/tools/testing/selftests/bpf/progs/bpf_cc_cubic.c +++ b/tools/testing/selftests/bpf/progs/bpf_cc_cubic.c @@ -91,7 +91,7 @@ static void tcp_cwnd_reduction(struct sock *sk, int newly_acked_sacked, (__u64)tp->snd_ssthresh * prr_delivered + tp->prior_cwnd - 1; sndcnt = (__u32)div64_u64(dividend, (__u64)tp->prior_cwnd) - tp->prr_out; } else { - sndcnt = max(prr_delivered - tp->prr_out, newly_acked_sacked); + sndcnt = max(prr_delivered - tp->prr_out, (__u32)newly_acked_sacked); if (flag & FLAG_SND_UNA_ADVANCED && !newly_lost) sndcnt++; sndcnt = min(delta, sndcnt); diff --git a/tools/testing/selftests/bpf/progs/bpf_cubic.c b/tools/testing/selftests/bpf/progs/bpf_cubic.c index f089faa97ae6..100937488d2d 100644 --- a/tools/testing/selftests/bpf/progs/bpf_cubic.c +++ b/tools/testing/selftests/bpf/progs/bpf_cubic.c @@ -277,7 +277,7 @@ static void bictcp_update(struct bpf_bictcp *ca, __u32 cwnd, __u32 acked) ca->ack_cnt += acked; /* count the number of ACKed packets */ if (ca->last_cwnd == cwnd && - (__s32)(tcp_jiffies32 - ca->last_time) <= HZ / 32) + (__s32)(tcp_jiffies32 - ca->last_time) <= (__s32)HZ / 32) return; /* The CUBIC function can update ca->cnt at most once per jiffy. @@ -474,7 +474,7 @@ static void hystart_update(struct sock *sk, __u32 delay) if (sk->sk_pacing_status == SK_PACING_NONE) threshold >>= 1; - if ((__s32)(now - ca->round_start) > threshold) { + if ((__s32)(now - ca->round_start) > (__s32)threshold) { ca->found = 1; tp->snd_ssthresh = tp->snd_cwnd; } @@ -512,7 +512,7 @@ void BPF_PROG(bpf_cubic_acked, struct sock *sk, const struct ack_sample *sample) return; /* Discard delay samples right after fast recovery */ - if (ca->epoch_start && (__s32)(tcp_jiffies32 - ca->epoch_start) < HZ) + if (ca->epoch_start && (__s32)(tcp_jiffies32 - ca->epoch_start) < (__s32)HZ) return; delay = sample->rtt_us; @@ -525,7 +525,7 @@ void BPF_PROG(bpf_cubic_acked, struct sock *sk, const struct ack_sample *sample) /* hystart triggers when cwnd is larger than some threshold */ if (!ca->found && tcp_in_slow_start(tp) && hystart && - tp->snd_cwnd >= hystart_low_window) + tp->snd_cwnd >= (__u32)hystart_low_window) hystart_update(sk, delay); } diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c index 9fdea8cd4c6f..0baf00463f35 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_array_map.c @@ -24,7 +24,7 @@ int dump_bpf_percpu_array_map(struct bpf_iter__bpf_map_elem *ctx) __u32 *key = ctx->key; void *pptr = ctx->value; __u32 step; - int i; + __u32 i; if (key == (void *)0 || pptr == (void *)0) return 0; diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c b/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c index f5a309455490..647ec1aa0326 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_task_stack.c @@ -27,7 +27,7 @@ int dump_task_stack(struct bpf_iter__task *ctx) BPF_SEQ_PRINTF(seq, "pid: %8u num_entries: %8u\n", task->pid, retlen / SIZE_OF_ULONG); for (i = 0; i < MAX_STACK_TRACE_DEPTH; i++) { - if (retlen > i * SIZE_OF_ULONG) + if ((__u32)retlen > i * SIZE_OF_ULONG) BPF_SEQ_PRINTF(seq, "[<0>] %pB\n", (void *)entries[i]); } BPF_SEQ_PRINTF(seq, "\n"); diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c b/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c index 966ee5a7b066..704db7589565 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_tasks.c @@ -115,7 +115,8 @@ int dump_task_sleepable(struct bpf_iter__task *ctx) /* Same length as the string */ ret = bpf_copy_from_user_task_str((char *)task_str2, 10, user_ptr, task, 0); /* only need to do the task pid check once */ - if (bpf_strncmp(task_str2, 10, "test_data\0") != 0 || ret != 10 || task->tgid != pid) { + if (bpf_strncmp(task_str2, 10, "test_data\0") != 0 || ret != 10 || + (__u32)task->tgid != pid) { BPF_SEQ_PRINTF(seq, "%s\n", info); return 0; } diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c b/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c index 174298e122d3..d9088851babf 100644 --- a/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c +++ b/tools/testing/selftests/bpf/progs/bpf_iter_vma_offset.c @@ -22,11 +22,11 @@ int get_vma_offset(struct bpf_iter__task_vma *ctx) if (task == NULL || vma == NULL) return 0; - if (last_tgid != task->tgid) + if (last_tgid != (__u32)task->tgid) unique_tgid_cnt++; last_tgid = task->tgid; - if (task->tgid != pid) + if ((__u32)task->tgid != pid) return 0; if (vma->vm_start <= address && vma->vm_end > address) { diff --git a/tools/testing/selftests/bpf/progs/bpf_qdisc_fifo.c b/tools/testing/selftests/bpf/progs/bpf_qdisc_fifo.c index 1de2be3e370b..7a639dcb23a9 100644 --- a/tools/testing/selftests/bpf/progs/bpf_qdisc_fifo.c +++ b/tools/testing/selftests/bpf/progs/bpf_qdisc_fifo.c @@ -88,7 +88,7 @@ void BPF_PROG(bpf_fifo_reset, struct Qdisc *sch) { struct bpf_list_node *node; struct skb_node *skbn; - int i; + __u32 i; bpf_for(i, 0, sch->q.qlen) { struct sk_buff *skb = NULL; diff --git a/tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c b/tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c index 1a3233a275c7..4f80164b5491 100644 --- a/tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c +++ b/tools/testing/selftests/bpf/progs/bpf_qdisc_fq.c @@ -351,7 +351,7 @@ int BPF_PROG(bpf_fq_enqueue, struct sk_buff *skb, struct Qdisc *sch, jiffies = bpf_jiffies64(); if ((s64)(jiffies - (flow_copy->age + q.flow_refill_delay)) > 0) { - if (flow_copy->credit < q.quantum) + if ((__u32)flow_copy->credit < q.quantum) flow_copy->credit = q.quantum; } flow_copy->age = 0; @@ -590,7 +590,7 @@ struct sk_buff *BPF_PROG(bpf_fq_dequeue, struct Qdisc *sch) { struct dequeue_nonprio_ctx cb_ctx = {}; struct sk_buff *skb = NULL; - int i; + __u32 i; if (!sch->q.qlen) goto out; diff --git a/tools/testing/selftests/bpf/progs/cgroup_getset_retval_getsockopt.c b/tools/testing/selftests/bpf/progs/cgroup_getset_retval_getsockopt.c index 932b8ecd4ae3..854dae839f7f 100644 --- a/tools/testing/selftests/bpf/progs/cgroup_getset_retval_getsockopt.c +++ b/tools/testing/selftests/bpf/progs/cgroup_getset_retval_getsockopt.c @@ -22,7 +22,7 @@ int get_retval(struct bpf_sockopt *ctx) __sync_fetch_and_add(&invocations, 1); /* optval larger than PAGE_SIZE use kernel's buffer. */ - if (ctx->optlen > page_size) + if ((__u32)ctx->optlen > page_size) ctx->optlen = 0; return 1; @@ -37,7 +37,7 @@ int set_eisconn(struct bpf_sockopt *ctx) assertion_error = 1; /* optval larger than PAGE_SIZE use kernel's buffer. */ - if (ctx->optlen > page_size) + if ((__u32)ctx->optlen > page_size) ctx->optlen = 0; return 1; @@ -51,7 +51,7 @@ int clear_retval(struct bpf_sockopt *ctx) ctx->retval = 0; /* optval larger than PAGE_SIZE use kernel's buffer. */ - if (ctx->optlen > page_size) + if ((__u32)ctx->optlen > page_size) ctx->optlen = 0; return 1; diff --git a/tools/testing/selftests/bpf/progs/connect4_dropper.c b/tools/testing/selftests/bpf/progs/connect4_dropper.c index a3819a5d09c8..0014f8de9d1c 100644 --- a/tools/testing/selftests/bpf/progs/connect4_dropper.c +++ b/tools/testing/selftests/bpf/progs/connect4_dropper.c @@ -20,7 +20,7 @@ int connect_v4_dropper(struct bpf_sock_addr *ctx) { if (ctx->type != SOCK_STREAM) return VERDICT_PROCEED; - if (ctx->user_port == bpf_htons(port)) + if (ctx->user_port == (__u32)bpf_htons(port)) return VERDICT_REJECT; return VERDICT_PROCEED; } diff --git a/tools/testing/selftests/bpf/progs/cpumask_success.c b/tools/testing/selftests/bpf/progs/cpumask_success.c index 0e04c31b91c0..c09e290fbdac 100644 --- a/tools/testing/selftests/bpf/progs/cpumask_success.c +++ b/tools/testing/selftests/bpf/progs/cpumask_success.c @@ -221,7 +221,7 @@ int BPF_PROG(test_first_firstzero_cpu, struct task_struct *task, u64 clone_flags if (!cpumask) return 0; - if (bpf_cpumask_first(cast(cpumask)) < nr_cpus) { + if (bpf_cpumask_first(cast(cpumask)) < (__u32)nr_cpus) { err = 3; goto release_exit; } @@ -866,7 +866,7 @@ int BPF_PROG(test_populate, struct task_struct *task, u64 clone_flags) * access NR_CPUS, the upper bound for nr_cpus, so we infer * it from the size of cpumask_t. */ - if (nr_cpus < 0 || nr_cpus >= CPUMASK_TEST_MASKLEN * 8) { + if (nr_cpus < 0 || (__u32)nr_cpus >= CPUMASK_TEST_MASKLEN * 8) { err = 3; goto out; } diff --git a/tools/testing/selftests/bpf/progs/dynptr_success.c b/tools/testing/selftests/bpf/progs/dynptr_success.c index 127dea342e5a..149b9308105e 100644 --- a/tools/testing/selftests/bpf/progs/dynptr_success.c +++ b/tools/testing/selftests/bpf/progs/dynptr_success.c @@ -40,7 +40,7 @@ int test_read_write(void *ctx) char write_data[64] = "hello there, world!!"; char read_data[64] = {}; struct bpf_dynptr ptr; - int i; + __u32 i; if (bpf_get_current_pid_tgid() >> 32 != pid) return 0; @@ -114,7 +114,7 @@ int test_dynptr_data(void *ctx) if (err) return 0; - if (val != *(int *)data) + if ((int)val != *(int *)data) err = 5; return 0; @@ -626,7 +626,7 @@ int BPF_PROG(test_dynptr_skb_tp_btf, void *skb, void *location) static inline int bpf_memcmp(const char *a, const char *b, u32 size) { - int i; + __u32 i; bpf_for(i, 0, size) { if (a[i] != b[i]) @@ -937,7 +937,7 @@ static __always_inline void test_dynptr_probe(void *ptr, bpf_read_dynptr_fn_t bp { char buf[sizeof(expected_str)]; struct bpf_dynptr ptr_buf; - int i; + __u32 i; if (bpf_get_current_pid_tgid() >> 32 != pid) return; diff --git a/tools/testing/selftests/bpf/progs/iters.c b/tools/testing/selftests/bpf/progs/iters.c index 7dd92a303bf6..bb896fd7b364 100644 --- a/tools/testing/selftests/bpf/progs/iters.c +++ b/tools/testing/selftests/bpf/progs/iters.c @@ -369,7 +369,7 @@ SEC("raw_tp") __success int iter_array_fill(const void *ctx) { - int sum, i; + __u32 sum, i; MY_PID_GUARD(); @@ -395,7 +395,7 @@ SEC("raw_tp") __success int iter_nested_iters(const void *ctx) { - int sum, row, col; + __u64 sum, row, col; MY_PID_GUARD(); @@ -463,7 +463,7 @@ int iter_nested_deeply_iters(const void *ctx) static __noinline void fill_inner_dimension(int row) { - int col; + __u64 col; bpf_for(col, 0, ARRAY_SIZE(arr2d[0])) { arr2d[row][col] = row * col; @@ -472,7 +472,7 @@ static __noinline void fill_inner_dimension(int row) static __noinline int sum_inner_dimension(int row) { - int sum = 0, col; + __u64 sum = 0, col; bpf_for(col, 0, ARRAY_SIZE(arr2d[0])) { sum += arr2d[row][col]; @@ -487,7 +487,7 @@ SEC("raw_tp") __success int iter_subprog_iters(const void *ctx) { - int sum, row, col; + __u64 sum, row, col; MY_PID_GUARD(); @@ -626,7 +626,7 @@ __success int iter_stack_array_loop(const void *ctx) { long arr1[16], arr2[16], sum = 0; - int i; + __u32 i; MY_PID_GUARD(); @@ -663,7 +663,7 @@ static __noinline void fill(struct bpf_iter_num *it, int *arr, __u32 n, int mul) while ((t = bpf_iter_num_next(it))) { i = *t; - if (i >= n) + if ((__u32)i >= n) break; arr[i] = i * mul; } @@ -1537,7 +1537,7 @@ int iter_arr_with_actual_elem_count(const void *ctx) { int i, n = loop_data.n, sum = 0; - if (n > ARRAY_SIZE(loop_data.data)) + if ((__u64)n > ARRAY_SIZE(loop_data.data)) return 0; bpf_for(i, 0, n) { diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test.c b/tools/testing/selftests/bpf/progs/kfunc_call_test.c index 8b86113a0126..c4e570662b54 100644 --- a/tools/testing/selftests/bpf/progs/kfunc_call_test.c +++ b/tools/testing/selftests/bpf/progs/kfunc_call_test.c @@ -108,7 +108,7 @@ int kfunc_syscall_test(struct syscall_test_args *args) { const long size = args->size; - if (size > sizeof(args->data)) + if ((__u64)size > sizeof(args->data)) return -7; /* -E2BIG */ bpf_kfunc_call_test_mem_len_pass1(&args->data, sizeof(args->data)); diff --git a/tools/testing/selftests/bpf/progs/linked_list.c b/tools/testing/selftests/bpf/progs/linked_list.c index 421f40835acd..d817c8a483f3 100644 --- a/tools/testing/selftests/bpf/progs/linked_list.c +++ b/tools/testing/selftests/bpf/progs/linked_list.c @@ -110,7 +110,7 @@ int list_push_pop_multiple(struct bpf_spin_lock *lock, struct bpf_list_head *hea { struct bpf_list_node *n; struct foo *f[200], *pf; - int i; + __u64 i; /* Loop following this check adds nodes 2-at-a-time in order to * validate multiple release_on_unlock release logic @@ -144,7 +144,7 @@ int list_push_pop_multiple(struct bpf_spin_lock *lock, struct bpf_list_head *hea if (!n) return 3; pf = container_of(n, struct foo, node2); - if (pf->data != (ARRAY_SIZE(f) - i - 1)) { + if ((__u64)pf->data != (ARRAY_SIZE(f) - i - 1)) { bpf_obj_drop(pf); return 4; } @@ -163,7 +163,7 @@ int list_push_pop_multiple(struct bpf_spin_lock *lock, struct bpf_list_head *hea if (!n) return 5; pf = container_of(n, struct foo, node2); - if (pf->data != i) { + if ((__u64)pf->data != i) { bpf_obj_drop(pf); return 6; } @@ -193,7 +193,7 @@ int list_in_list(struct bpf_spin_lock *lock, struct bpf_list_head *head, bool le struct bpf_list_node *n; struct bar *ba[8], *b; struct foo *f; - int i; + __u64 i; f = bpf_obj_new(typeof(*f)); if (!f) @@ -238,7 +238,7 @@ int list_in_list(struct bpf_spin_lock *lock, struct bpf_list_head *head, bool le return 6; } b = container_of(n, struct bar, node); - if (b->data != i) { + if ((__u64)b->data != i) { bpf_obj_drop(f); bpf_obj_drop(b); return 7; diff --git a/tools/testing/selftests/bpf/progs/lsm.c b/tools/testing/selftests/bpf/progs/lsm.c index 0c13b7409947..bb6a4bb6e364 100644 --- a/tools/testing/selftests/bpf/progs/lsm.c +++ b/tools/testing/selftests/bpf/progs/lsm.c @@ -115,7 +115,7 @@ int BPF_PROG(test_void_hook, struct linux_binprm *bprm) __u32 key = 0; __u64 *value; - if (monitored_pid == pid) + if ((__u32)monitored_pid == pid) bprm_count++; bpf_copy_from_user(args, sizeof(args), (void *)bprm->vma->vm_mm->arg_start); diff --git a/tools/testing/selftests/bpf/progs/map_in_map_btf.c b/tools/testing/selftests/bpf/progs/map_in_map_btf.c index 7a1336d7b16a..719368217fe8 100644 --- a/tools/testing/selftests/bpf/progs/map_in_map_btf.c +++ b/tools/testing/selftests/bpf/progs/map_in_map_btf.c @@ -49,7 +49,7 @@ int add_to_list_in_inner_array(void *ctx) struct bpf_map *map; int zero = 0; - if (done || (u32)bpf_get_current_pid_tgid() != pid) + if (done || (__u32)bpf_get_current_pid_tgid() != (__u32)pid) return 0; map = bpf_map_lookup_elem(&outer_array, &zero); diff --git a/tools/testing/selftests/bpf/progs/map_ptr_kern.c b/tools/testing/selftests/bpf/progs/map_ptr_kern.c index efaf622c28dd..310526d06233 100644 --- a/tools/testing/selftests/bpf/progs/map_ptr_kern.c +++ b/tools/testing/selftests/bpf/progs/map_ptr_kern.c @@ -148,7 +148,7 @@ static inline int check_array(void) { struct bpf_array *array = (struct bpf_array *)&m_array; struct bpf_map *map = (struct bpf_map *)&m_array; - int i, n_lookups = 0, n_keys = 0; + __u32 i, n_lookups = 0, n_keys = 0; VERIFY(check_default(&array->map, map)); diff --git a/tools/testing/selftests/bpf/progs/mmap_inner_array.c b/tools/testing/selftests/bpf/progs/mmap_inner_array.c index 90aacbc2938a..90e31cf3a4d3 100644 --- a/tools/testing/selftests/bpf/progs/mmap_inner_array.c +++ b/tools/testing/selftests/bpf/progs/mmap_inner_array.c @@ -38,7 +38,7 @@ int add_to_list_in_inner_array(void *ctx) __u64 *value; curr_pid = (u32)bpf_get_current_pid_tgid(); - if (done || curr_pid != pid) + if (done || curr_pid != (__u32)pid) return 0; pid_match = true; diff --git a/tools/testing/selftests/bpf/progs/mptcp_subflow.c b/tools/testing/selftests/bpf/progs/mptcp_subflow.c index 70302477e326..8af5c2dfc08c 100644 --- a/tools/testing/selftests/bpf/progs/mptcp_subflow.c +++ b/tools/testing/selftests/bpf/progs/mptcp_subflow.c @@ -63,7 +63,7 @@ int mptcp_subflow(struct bpf_sock_ops *skops) static int _check_getsockopt_subflow_mark(struct mptcp_sock *msk, struct bpf_sockopt *ctx) { struct mptcp_subflow_context *subflow; - int i = 0; + __u32 i = 0; mptcp_for_each_subflow(msk, subflow) { struct sock *ssk; diff --git a/tools/testing/selftests/bpf/progs/netif_receive_skb.c b/tools/testing/selftests/bpf/progs/netif_receive_skb.c index 9e067dcbf607..920b884eef01 100644 --- a/tools/testing/selftests/bpf/progs/netif_receive_skb.c +++ b/tools/testing/selftests/bpf/progs/netif_receive_skb.c @@ -35,7 +35,7 @@ static int __strncmp(const void *m1, const void *m2, size_t len) { const unsigned char *s1 = m1; const unsigned char *s2 = m2; - int i, delta = 0; + size_t i, delta = 0; for (i = 0; i < len; i++) { delta = s1[i] - s2[i]; @@ -107,7 +107,7 @@ int BPF_PROG(trace_netif_receive_skb, struct sk_buff *skb) /* Ensure we can write skb string representation */ p.type_id = bpf_core_type_id_kernel(struct sk_buff); p.ptr = skb; - for (i = 0; i < ARRAY_SIZE(flags); i++) { + for (i = 0; (size_t)i < ARRAY_SIZE(flags); i++) { ++num_subtests; ret = bpf_snprintf_btf(str, STRSIZE, &p, sizeof(p), 0); if (ret < 0) diff --git a/tools/testing/selftests/bpf/progs/profiler.inc.h b/tools/testing/selftests/bpf/progs/profiler.inc.h index 813143b4985d..f664f5915169 100644 --- a/tools/testing/selftests/bpf/progs/profiler.inc.h +++ b/tools/testing/selftests/bpf/progs/profiler.inc.h @@ -169,7 +169,7 @@ static INLINE int get_var_spid_index(struct var_kill_data_arr_t* arr_struct, #ifdef UNROLL __pragma_loop_unroll #endif - for (int i = 0; i < ARRAY_SIZE(arr_struct->array); i++) + for (size_t i = 0; i < ARRAY_SIZE(arr_struct->array); i++) if (arr_struct->array[i].meta.pid == spid) return i; return -1; @@ -402,7 +402,7 @@ static INLINE int trace_var_sys_kill(void* ctx, int tpid, int sig) #ifdef UNROLL __pragma_loop_unroll #endif - for (int i = 0; i < ARRAY_SIZE(arr_struct->array); i++) + for (size_t i = 0; i < ARRAY_SIZE(arr_struct->array); i++) if (arr_struct->array[i].meta.pid == 0) { bpf_probe_read_kernel(&arr_struct->array[i], sizeof(arr_struct->array[i]), @@ -629,7 +629,7 @@ int raw_tracepoint__sched_process_exit(void* ctx) #ifdef UNROLL __pragma_loop_unroll #endif - for (int i = 0; i < ARRAY_SIZE(arr_struct->array); i++) { + for (size_t i = 0; i < ARRAY_SIZE(arr_struct->array); i++) { struct var_kill_data_t* past_kill_data = &arr_struct->array[i]; if (past_kill_data != NULL && past_kill_data->kill_target_pid == (pid_t)tpid) { diff --git a/tools/testing/selftests/bpf/progs/rcu_read_lock.c b/tools/testing/selftests/bpf/progs/rcu_read_lock.c index 3a868a199349..38fa039f586b 100644 --- a/tools/testing/selftests/bpf/progs/rcu_read_lock.c +++ b/tools/testing/selftests/bpf/progs/rcu_read_lock.c @@ -34,7 +34,7 @@ int get_cgroup_id(void *ctx) struct css_set *cgroups; task = bpf_get_current_task_btf(); - if (task->pid != target_pid) + if ((__u32)task->pid != target_pid) return 0; /* simulate bpf_get_current_cgroup_id() helper */ @@ -56,7 +56,7 @@ int task_succ(void *ctx) long *ptr; task = bpf_get_current_task_btf(); - if (task->pid != target_pid) + if ((__u32)task->pid != target_pid) return 0; bpf_rcu_read_lock(); diff --git a/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c b/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c index 46d6eb2a3b17..2df842c7e9ed 100644 --- a/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c +++ b/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c @@ -28,7 +28,7 @@ int BPF_PROG(bpf_local_storage_destroy, struct bpf_local_storage *local_storage) return 0; sk = bpf_core_cast(sk_ptr, struct sock); - if (sk->sk_cookie.counter != cookie) + if ((__u64)sk->sk_cookie.counter != cookie) return 0; cookie_found++; @@ -43,11 +43,11 @@ int BPF_PROG(inet6_sock_destruct, struct sock *sk) { int *value; - if (!cookie || sk->sk_cookie.counter != cookie) + if (!cookie || (__u64)sk->sk_cookie.counter != cookie) return 0; value = bpf_sk_storage_get(&sk_storage, sk, 0, 0); - if (value && *value == 0xdeadbeef) { + if (value && (__u32)*value == 0xdeadbeef) { cookie_found++; sk_ptr = sk; local_storage_ptr = sk->sk_bpf_storage; diff --git a/tools/testing/selftests/bpf/progs/sockopt_inherit.c b/tools/testing/selftests/bpf/progs/sockopt_inherit.c index a3434b840928..9f15752af34b 100644 --- a/tools/testing/selftests/bpf/progs/sockopt_inherit.c +++ b/tools/testing/selftests/bpf/progs/sockopt_inherit.c @@ -56,7 +56,7 @@ int _getsockopt(struct bpf_sockopt *ctx) struct sockopt_inherit *storage; __u8 *optval = ctx->optval; - if (ctx->level != SOL_CUSTOM) + if (ctx->level != (__s32)SOL_CUSTOM) goto out; /* only interested in SOL_CUSTOM */ if (optval + 1 > optval_end) @@ -87,7 +87,7 @@ int _setsockopt(struct bpf_sockopt *ctx) struct sockopt_inherit *storage; __u8 *optval = ctx->optval; - if (ctx->level != SOL_CUSTOM) + if (ctx->level != (__s32)SOL_CUSTOM) goto out; /* only interested in SOL_CUSTOM */ if (optval + 1 > optval_end) diff --git a/tools/testing/selftests/bpf/progs/sockopt_sk.c b/tools/testing/selftests/bpf/progs/sockopt_sk.c index cb990a7d3d45..f08529dfb2cb 100644 --- a/tools/testing/selftests/bpf/progs/sockopt_sk.c +++ b/tools/testing/selftests/bpf/progs/sockopt_sk.c @@ -107,7 +107,7 @@ int _getsockopt(struct bpf_sockopt *ctx) return 1; } - if (ctx->level != SOL_CUSTOM) + if (ctx->level != (__s32)SOL_CUSTOM) return 0; /* deny everything except custom level */ if (optval + 1 > optval_end) @@ -212,7 +212,7 @@ int _setsockopt(struct bpf_sockopt *ctx) return 1; } - if (ctx->level != SOL_CUSTOM) + if (ctx->level != (__s32)SOL_CUSTOM) return 0; /* deny everything except custom level */ if (optval + 1 > optval_end) diff --git a/tools/testing/selftests/bpf/progs/strobemeta.h b/tools/testing/selftests/bpf/progs/strobemeta.h index a5c74d31a244..36b4e82abae2 100644 --- a/tools/testing/selftests/bpf/progs/strobemeta.h +++ b/tools/testing/selftests/bpf/progs/strobemeta.h @@ -409,7 +409,7 @@ static __always_inline uint64_t read_map_var(struct strobemeta_cfg *cfg, descr->id = map.id; descr->cnt = map.cnt; - if (cfg->req_meta_idx == idx) { + if (cfg->req_meta_idx == (__s64)idx) { data->req_id = map.id; data->req_meta_valid = 1; } diff --git a/tools/testing/selftests/bpf/progs/task_local_data.bpf.h b/tools/testing/selftests/bpf/progs/task_local_data.bpf.h index 432fff2af844..51a958d04aa7 100644 --- a/tools/testing/selftests/bpf/progs/task_local_data.bpf.h +++ b/tools/testing/selftests/bpf/progs/task_local_data.bpf.h @@ -181,7 +181,7 @@ static int __tld_fetch_key(struct tld_object *tld_obj, const char *name, int i_s metadata = tld_obj->data_map->meta->metadata; bpf_for(i, 0, cnt) { - if (i >= TLD_MAX_DATA_CNT) + if ((__u32)i >= TLD_MAX_DATA_CNT) break; if (i >= i_start && !bpf_strncmp(metadata[i].name, TLD_NAME_LEN, name)) @@ -214,7 +214,7 @@ static int __tld_fetch_key(struct tld_object *tld_obj, const char *name, int i_s if (likely(_data)) { \ if (likely(off > 0)) { \ barrier_var(off); \ - if (likely(off < __PAGE_SIZE - size)) \ + if (likely((size_t)off < __PAGE_SIZE - size)) \ data = _data + off; \ } else { \ cnt = -(off); \ @@ -223,7 +223,7 @@ static int __tld_fetch_key(struct tld_object *tld_obj, const char *name, int i_s off = __tld_fetch_key(tld_obj, name, cnt); \ (tld_obj)->key_map->key.off = off; \ \ - if (likely(off < __PAGE_SIZE - size)) { \ + if (likely((size_t)off < __PAGE_SIZE - size)) { \ barrier_var(off); \ if (off > 0) \ data = _data + off; \ diff --git a/tools/testing/selftests/bpf/progs/test_bpf_cookie.c b/tools/testing/selftests/bpf/progs/test_bpf_cookie.c index c83142b55f47..47e80864b6b8 100644 --- a/tools/testing/selftests/bpf/progs/test_bpf_cookie.c +++ b/tools/testing/selftests/bpf/progs/test_bpf_cookie.c @@ -6,7 +6,7 @@ #include <bpf/bpf_tracing.h> #include <errno.h> -int my_tid; +__u32 my_tid; __u64 kprobe_res; __u64 kprobe_multi_res; diff --git a/tools/testing/selftests/bpf/progs/test_check_mtu.c b/tools/testing/selftests/bpf/progs/test_check_mtu.c index 2ec1de11a3ae..246caea8124f 100644 --- a/tools/testing/selftests/bpf/progs/test_check_mtu.c +++ b/tools/testing/selftests/bpf/progs/test_check_mtu.c @@ -47,7 +47,7 @@ int xdp_use_helper(struct xdp_md *ctx) goto out; } - if (mtu_len != GLOBAL_USER_MTU) + if (mtu_len != (__u32)GLOBAL_USER_MTU) retval = XDP_DROP; out: @@ -165,7 +165,7 @@ int tc_use_helper(struct __sk_buff *ctx) goto out; } - if (mtu_len != GLOBAL_USER_MTU) + if (mtu_len != (__u32)GLOBAL_USER_MTU) retval = BPF_REDIRECT; out: global_bpf_mtu_tc = mtu_len; diff --git a/tools/testing/selftests/bpf/progs/test_core_extern.c b/tools/testing/selftests/bpf/progs/test_core_extern.c index a3c7c1042f35..4eae1eb885f1 100644 --- a/tools/testing/selftests/bpf/progs/test_core_extern.c +++ b/tools/testing/selftests/bpf/progs/test_core_extern.c @@ -37,7 +37,7 @@ uint64_t missing_val = -1; SEC("raw_tp/sys_enter") int handle_sys_enter(struct pt_regs *ctx) { - int i; + __u32 i; kern_ver = LINUX_KERNEL_VERSION; unkn_virt_val = LINUX_UNKNOWN_VIRTUAL_EXTERN; diff --git a/tools/testing/selftests/bpf/progs/test_get_xattr.c b/tools/testing/selftests/bpf/progs/test_get_xattr.c index 54305f4c9f2d..3cda9379a62a 100644 --- a/tools/testing/selftests/bpf/progs/test_get_xattr.c +++ b/tools/testing/selftests/bpf/progs/test_get_xattr.c @@ -42,7 +42,7 @@ int BPF_PROG(test_file_open, struct file *f) bpf_dynptr_from_mem(value1, sizeof(value1), 0, &value_ptr); - for (i = 0; i < ARRAY_SIZE(xattr_names); i++) { + for (i = 0; (__u32)i < ARRAY_SIZE(xattr_names); i++) { ret = bpf_get_file_xattr(f, xattr_names[i], &value_ptr); if (ret == sizeof(expected_value)) break; @@ -68,7 +68,7 @@ int BPF_PROG(test_inode_getxattr, struct dentry *dentry, char *name) bpf_dynptr_from_mem(value2, sizeof(value2), 0, &value_ptr); - for (i = 0; i < ARRAY_SIZE(xattr_names); i++) { + for (i = 0; (__u32)i < ARRAY_SIZE(xattr_names); i++) { ret = bpf_get_dentry_xattr(dentry, xattr_names[i], &value_ptr); if (ret == sizeof(expected_value)) break; diff --git a/tools/testing/selftests/bpf/progs/test_global_func11.c b/tools/testing/selftests/bpf/progs/test_global_func11.c index 283e036dc401..2ad72bf0e07b 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func11.c +++ b/tools/testing/selftests/bpf/progs/test_global_func11.c @@ -5,7 +5,7 @@ #include "bpf_misc.h" struct S { - int x; + __u32 x; }; __noinline int foo(const struct S *s) diff --git a/tools/testing/selftests/bpf/progs/test_global_func12.c b/tools/testing/selftests/bpf/progs/test_global_func12.c index 6e03d42519a6..53eab8ec6772 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func12.c +++ b/tools/testing/selftests/bpf/progs/test_global_func12.c @@ -5,7 +5,7 @@ #include "bpf_misc.h" struct S { - int x; + __u32 x; }; __noinline int foo(const struct S *s) diff --git a/tools/testing/selftests/bpf/progs/test_global_func13.c b/tools/testing/selftests/bpf/progs/test_global_func13.c index 02ea80da75b5..c4afdfc9d92e 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func13.c +++ b/tools/testing/selftests/bpf/progs/test_global_func13.c @@ -5,7 +5,7 @@ #include "bpf_misc.h" struct S { - int x; + __u32 x; }; __noinline int foo(const struct S *s) diff --git a/tools/testing/selftests/bpf/progs/test_global_func14.c b/tools/testing/selftests/bpf/progs/test_global_func14.c index 33b7d5efd7b2..9c494fb39e2f 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func14.c +++ b/tools/testing/selftests/bpf/progs/test_global_func14.c @@ -9,7 +9,7 @@ struct S; __noinline int foo(const struct S *s) { if (s) - return bpf_get_prandom_u32() < *(const int *) s; + return bpf_get_prandom_u32() < *(const __u32 *) s; return 0; } diff --git a/tools/testing/selftests/bpf/progs/test_global_func9.c b/tools/testing/selftests/bpf/progs/test_global_func9.c index 1f2cb0159b8d..9138d9bd08fc 100644 --- a/tools/testing/selftests/bpf/progs/test_global_func9.c +++ b/tools/testing/selftests/bpf/progs/test_global_func9.c @@ -5,7 +5,7 @@ #include "bpf_misc.h" struct S { - int x; + __u32 x; }; struct C { diff --git a/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c b/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c index fed66f36adb6..976af2d3cdda 100644 --- a/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c +++ b/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c @@ -167,7 +167,7 @@ int is_valid_tlv_boundary(struct __sk_buff *skb, struct ip6_srh_t *srh, if (*pad_off == 0) *pad_off = cur_off; - if (*tlv_off == -1) + if (*tlv_off == (__u32)-1) *tlv_off = cur_off; else if (!offset_valid) return -EINVAL; @@ -186,7 +186,7 @@ int add_tlv(struct __sk_buff *skb, struct ip6_srh_t *srh, uint32_t tlv_off, uint32_t partial_srh_len; int err; - if (tlv_off != -1) + if (tlv_off != (__u32)-1) tlv_off += srh_off; if (itlv->type == SR6_TLV_PADDING || itlv->type == SR6_TLV_HMAC) diff --git a/tools/testing/selftests/bpf/progs/test_map_init.c b/tools/testing/selftests/bpf/progs/test_map_init.c index c89d28ead673..311e6ac64588 100644 --- a/tools/testing/selftests/bpf/progs/test_map_init.c +++ b/tools/testing/selftests/bpf/progs/test_map_init.c @@ -22,7 +22,7 @@ int sysenter_getpgid(const void *ctx) /* Just do it for once, when called from our own test prog. This * ensures the map value is only updated for a single CPU. */ - int cur_pid = bpf_get_current_pid_tgid() >> 32; + __u32 cur_pid = bpf_get_current_pid_tgid() >> 32; if (cur_pid == inPid) bpf_map_update_elem(&hashmap1, &inKey, &inValue, BPF_NOEXIST); diff --git a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c index d9b2ba7ac340..4b8ab8716246 100644 --- a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c +++ b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt.c @@ -102,7 +102,7 @@ int xdp_ingress_v6(struct xdp_md *xdp) opt_state.byte_offset = sizeof(struct tcphdr) + tcp_offset; /* max number of bytes of options in tcp header is 40 bytes */ - for (int i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { + for (__u32 i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { err = parse_hdr_opt(xdp, &opt_state); if (err || !opt_state.hdr_bytes_remaining) diff --git a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c index dc6e43bc6a62..bf3ac5c2938c 100644 --- a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c +++ b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c @@ -100,7 +100,7 @@ int xdp_ingress_v6(struct xdp_md *xdp) off += sizeof(struct tcphdr); /* max number of bytes of options in tcp header is 40 bytes */ - for (int i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { + for (__u32 i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { err = parse_hdr_opt(&ptr, &off, &hdr_bytes_remaining, &server_id); if (err || !hdr_bytes_remaining) diff --git a/tools/testing/selftests/bpf/progs/test_pkt_access.c b/tools/testing/selftests/bpf/progs/test_pkt_access.c index bce7173152c6..39b5a5ba9033 100644 --- a/tools/testing/selftests/bpf/progs/test_pkt_access.c +++ b/tools/testing/selftests/bpf/progs/test_pkt_access.c @@ -130,11 +130,11 @@ int test_pkt_access(struct __sk_buff *skb) tcp = (struct tcphdr *)((void *)(ip6h) + ihl_len); } - if (test_pkt_access_subprog1(skb) != skb->len * 2) + if ((__u32)test_pkt_access_subprog1(skb) != skb->len * 2) return TC_ACT_SHOT; - if (test_pkt_access_subprog2(2, skb) != skb->len * 2) + if ((__u32)test_pkt_access_subprog2(2, skb) != skb->len * 2) return TC_ACT_SHOT; - if (test_pkt_access_subprog3(3, skb) != skb->len * 3 * skb->ifindex) + if ((__u32)test_pkt_access_subprog3(3, skb) != skb->len * 3 * skb->ifindex) return TC_ACT_SHOT; if (tcp) { if (test_pkt_write_access_subprog(skb, (void *)tcp - data)) diff --git a/tools/testing/selftests/bpf/progs/test_seg6_loop.c b/tools/testing/selftests/bpf/progs/test_seg6_loop.c index 5059050f74f6..fccb21d23fe2 100644 --- a/tools/testing/selftests/bpf/progs/test_seg6_loop.c +++ b/tools/testing/selftests/bpf/progs/test_seg6_loop.c @@ -170,7 +170,7 @@ static __always_inline int is_valid_tlv_boundary(struct __sk_buff *skb, if (*pad_off == 0) *pad_off = cur_off; - if (*tlv_off == -1) + if (*tlv_off == (__u32)-1) *tlv_off = cur_off; else if (!offset_valid) return -EINVAL; @@ -189,7 +189,7 @@ static __always_inline int add_tlv(struct __sk_buff *skb, uint32_t partial_srh_len; int err; - if (tlv_off != -1) + if (tlv_off != (__u32)-1) tlv_off += srh_off; if (itlv->type == SR6_TLV_PADDING || itlv->type == SR6_TLV_HMAC) diff --git a/tools/testing/selftests/bpf/progs/test_skb_ctx.c b/tools/testing/selftests/bpf/progs/test_skb_ctx.c index a724a70c6700..7939a2edc414 100644 --- a/tools/testing/selftests/bpf/progs/test_skb_ctx.c +++ b/tools/testing/selftests/bpf/progs/test_skb_ctx.c @@ -11,7 +11,7 @@ SEC("tc") int process(struct __sk_buff *skb) { __pragma_loop_unroll_full - for (int i = 0; i < 5; i++) { + for (__u32 i = 0; i < 5; i++) { if (skb->cb[i] != i + 1) return 1; skb->cb[i]++; diff --git a/tools/testing/selftests/bpf/progs/test_snprintf.c b/tools/testing/selftests/bpf/progs/test_snprintf.c index 8fda07544023..1aa4835da71a 100644 --- a/tools/testing/selftests/bpf/progs/test_snprintf.c +++ b/tools/testing/selftests/bpf/progs/test_snprintf.c @@ -4,7 +4,7 @@ #include <linux/bpf.h> #include <bpf/bpf_helpers.h> -__u32 pid = 0; +int pid = 0; char num_out[64] = {}; long num_ret = 0; diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_kern.h b/tools/testing/selftests/bpf/progs/test_sockmap_kern.h index f48f85f1bd70..2297c83433b7 100644 --- a/tools/testing/selftests/bpf/progs/test_sockmap_kern.h +++ b/tools/testing/selftests/bpf/progs/test_sockmap_kern.h @@ -336,7 +336,7 @@ int bpf_prog9(struct sk_msg_md *msg) bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero); if (bytes) { - if (((__u64)data_end - (__u64)data) >= *bytes) + if (((__u64)data_end - (__u64)data) >= (__u64)*bytes) return SK_PASS; ret = bpf_msg_cork_bytes(msg, *bytes); if (ret) diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_strp.c b/tools/testing/selftests/bpf/progs/test_sockmap_strp.c index dde3d5bec515..e9675c45d8ef 100644 --- a/tools/testing/selftests/bpf/progs/test_sockmap_strp.c +++ b/tools/testing/selftests/bpf/progs/test_sockmap_strp.c @@ -2,7 +2,7 @@ #include <linux/bpf.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> -int verdict_max_size = 10000; +__u32 verdict_max_size = 10000; struct { __uint(type, BPF_MAP_TYPE_SOCKMAP); __uint(max_entries, 20); diff --git a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c index 404124a93892..c7e2d4571a2b 100644 --- a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c +++ b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c @@ -80,7 +80,7 @@ static __always_inline void set_ipv4_csum(struct iphdr *iph) { __u16 *iph16 = (__u16 *)iph; __u32 csum; - int i; + size_t i; iph->check = 0; diff --git a/tools/testing/selftests/bpf/progs/test_xdp.c b/tools/testing/selftests/bpf/progs/test_xdp.c index 8caf58be5818..ce2a9ae26088 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp.c +++ b/tools/testing/selftests/bpf/progs/test_xdp.c @@ -89,7 +89,7 @@ static __always_inline int handle_ipv4(struct xdp_md *xdp) struct vip vip = {}; int dport; __u32 csum = 0; - int i; + size_t i; if (iph + 1 > data_end) return XDP_DROP; diff --git a/tools/testing/selftests/bpf/progs/test_xdp_dynptr.c b/tools/testing/selftests/bpf/progs/test_xdp_dynptr.c index 67a77944ef29..12ad0ec91021 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_dynptr.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_dynptr.c @@ -89,7 +89,7 @@ static __always_inline int handle_ipv4(struct xdp_md *xdp, struct bpf_dynptr *xd struct vip vip = {}; int dport; __u32 csum = 0; - int i; + size_t i; __builtin_memset(eth_buffer, 0, sizeof(eth_buffer)); __builtin_memset(iph_buffer_tcp, 0, sizeof(iph_buffer_tcp)); diff --git a/tools/testing/selftests/bpf/progs/test_xdp_loop.c b/tools/testing/selftests/bpf/progs/test_xdp_loop.c index 93267a68825b..e9b7bbff5c23 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_loop.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_loop.c @@ -85,7 +85,7 @@ static __always_inline int handle_ipv4(struct xdp_md *xdp) struct vip vip = {}; int dport; __u32 csum = 0; - int i; + size_t i; if (iph + 1 > data_end) return XDP_DROP; diff --git a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c index fad94e41cef9..85ef3c0a3e20 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c @@ -372,7 +372,7 @@ bool encap_v4(struct xdp_md *xdp, struct ctl_value *cval, next_iph_u16 = (__u16 *) iph; __pragma_loop_unroll_full - for (int i = 0; i < sizeof(struct iphdr) >> 1; i++) + for (size_t i = 0; i < sizeof(struct iphdr) >> 1; i++) csum += *next_iph_u16++; iph->check = ~((csum & 0xffff) + (csum >> 16)); if (bpf_xdp_adjust_head(xdp, (int)sizeof(struct iphdr))) @@ -423,7 +423,7 @@ int send_icmp_reply(void *data, void *data_end) iph->check = 0; next_iph_u16 = (__u16 *) iph; __pragma_loop_unroll_full - for (int i = 0; i < sizeof(struct iphdr) >> 1; i++) + for (size_t i = 0; i < sizeof(struct iphdr) >> 1; i++) csum += *next_iph_u16++; iph->check = ~((csum & 0xffff) + (csum >> 16)); return swap_mac_and_send(data, data_end); diff --git a/tools/testing/selftests/bpf/progs/udp_limit.c b/tools/testing/selftests/bpf/progs/udp_limit.c index 4767451b59ac..af1b3195ea8a 100644 --- a/tools/testing/selftests/bpf/progs/udp_limit.c +++ b/tools/testing/selftests/bpf/progs/udp_limit.c @@ -50,7 +50,7 @@ int sock_release(struct bpf_sock *ctx) return 1; sk_storage = bpf_sk_storage_get(&sk_map, ctx, 0, 0); - if (!sk_storage || *sk_storage != 0xdeadbeef) + if (!sk_storage || *sk_storage != (int)0xdeadbeef) return 0; __sync_fetch_and_add(&invocations, 1); diff --git a/tools/testing/selftests/bpf/progs/uprobe_multi.c b/tools/testing/selftests/bpf/progs/uprobe_multi.c index 44190efcdba2..f99957773c3a 100644 --- a/tools/testing/selftests/bpf/progs/uprobe_multi.c +++ b/tools/testing/selftests/bpf/progs/uprobe_multi.c @@ -20,13 +20,13 @@ __u64 uretprobe_multi_func_3_result = 0; __u64 uprobe_multi_sleep_result = 0; -int pid = 0; +__u32 pid = 0; int child_pid = 0; int child_tid = 0; int child_pid_usdt = 0; int child_tid_usdt = 0; -int expect_pid = 0; +__u32 expect_pid = 0; bool bad_pid_seen = false; bool bad_pid_seen_usdt = false; diff --git a/tools/testing/selftests/bpf/progs/uprobe_multi_session_recursive.c b/tools/testing/selftests/bpf/progs/uprobe_multi_session_recursive.c index 8fbcd69fae22..017f1859ebe8 100644 --- a/tools/testing/selftests/bpf/progs/uprobe_multi_session_recursive.c +++ b/tools/testing/selftests/bpf/progs/uprobe_multi_session_recursive.c @@ -3,6 +3,7 @@ #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> #include <stdbool.h> +#include <stddef.h> #include "bpf_kfuncs.h" #include "bpf_misc.h" @@ -10,8 +11,8 @@ char _license[] SEC("license") = "GPL"; int pid = 0; -int idx_entry = 0; -int idx_return = 0; +size_t idx_entry = 0; +size_t idx_return = 0; __u64 test_uprobe_cookie_entry[6]; __u64 test_uprobe_cookie_return[3]; diff --git a/tools/testing/selftests/bpf/progs/verifier_arena_large.c b/tools/testing/selftests/bpf/progs/verifier_arena_large.c index f19e15400b3e..cb6cc9c4643a 100644 --- a/tools/testing/selftests/bpf/progs/verifier_arena_large.c +++ b/tools/testing/selftests/bpf/progs/verifier_arena_large.c @@ -86,10 +86,10 @@ int access_reserved(void *ctx) return 1; /* Try to dirty reserved memory. */ - for (i = 0; i < len && can_loop; i++) + for (i = 0; (size_t)i < len && can_loop; i++) *page = 0x5a; - for (i = 0; i < len && can_loop; i++) { + for (i = 0; (size_t)i < len && can_loop; i++) { page = (volatile char __arena *)(base + i * PAGE_SIZE); /* diff --git a/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c b/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c index 75dd922e4e9f..72f9f8c23c93 100644 --- a/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c +++ b/tools/testing/selftests/bpf/progs/verifier_iterating_callbacks.c @@ -593,7 +593,7 @@ int loop_inside_iter_volatile_limit(const void *ctx) { struct bpf_iter_num it; int *v, sum = 0; - __u64 i = 0; + __s32 i = 0; bpf_iter_num_new(&it, 0, ARR2_SZ); while ((v = bpf_iter_num_next(&it))) { -- 2.51.0

3 weeks, 2 days

2
1
0 0

[PATCH] kvm, selftests: ioctl to handle MSIs injected from userspace as software-bypassing vLPIs

by Maximilian Dittgen

From: Maximilian Dittgen <mdittgen(a)amazon.de> At the moment, all MSIs injected from userspace using KVM_SIGNAL_MSI are processed as LPIs in software with a hypervisor trap and exit. To properly test GICv4 direct vLPI injection from KVM selftests, we write a KVM_DEBUG_GIC_MSI_SETUP ioctl that manually creates an IRQ routing table entry for the specified MSI, and populates ITS structures (device, collection, and interrupt translation table entries) to map the MSI to a vLPI. We then call GICv4 kvm_vgic_v4_set_forwarding to let the vLPI bypass hypervisor traps and inject directly to the vCPU. To demonstrate the use of this ioctl, we implement a -D flag to the vgic_lpi_stress.c selftest that runs the stress test using direct vLPI injection rather than software-emulated LPI handling. Signed-off-by: Maximilian Dittgen <mdittgen(a)amazon.de> --- arch/arm64/kvm/arm.c | 37 +++++ arch/arm64/kvm/vgic/vgic-its.c | 133 ++++++++++++++++++ arch/arm64/kvm/vgic/vgic.h | 2 + include/linux/irqchip/arm-gic-v3.h | 1 + include/uapi/linux/kvm.h | 15 ++ .../selftests/kvm/arm64/vgic_lpi_stress.c | 52 ++++++- 6 files changed, 238 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 5bf101c869c9..e18f5ff68274 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -46,6 +46,8 @@ #include <kvm/arm_pmu.h> #include <kvm/arm_psci.h> +#include <vgic/vgic.h> + #include "sys_regs.h" static enum kvm_mode kvm_mode = KVM_MODE_DEFAULT; @@ -1927,6 +1929,41 @@ int kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) return -EFAULT; return kvm_vm_ioctl_get_reg_writable_masks(kvm, &range); } + case KVM_DEBUG_GIC_MSI_SETUP: { + /* Define interrupt ID boundaries for input validation */ + #define GIC_LPI_OFFSET 8192 + #define GIC_LPI_MAX 65535 + #define SPI_INTID_MIN 32 + #define SPI_INTID_MAX 1019 + + struct kvm_debug_gic_msi_setup params; + struct kvm_vcpu *vcpu; + + if (copy_from_user(&params, argp, sizeof(params))) + return -EFAULT; + + /* validate vcpu_id is in range and exists */ + if (params.vcpu_id >= atomic_read(&kvm->online_vcpus)) + return -EINVAL; + + vcpu = kvm_get_vcpu(kvm, params.vcpu_id); + if (!vcpu) + return -EINVAL; + + /* validate vintid is in LPI range */ + if (params.vintid < GIC_LPI_OFFSET || params.vintid > GIC_LPI_MAX) + return -EINVAL; + + /* + * Validate host_irq is in safe range -- we use SPI range since + * selftests guests will have no shared peripheral devices + */ + if (params.host_irq < SPI_INTID_MIN || params.host_irq > SPI_INTID_MAX) + return -EINVAL; + + /* Mock single MSI for testing */ + return debug_gic_msi_setup_mock_msi(kvm, &params); + } default: return -EINVAL; } diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c index 7368c13f16b7..46153ef5efcb 100644 --- a/arch/arm64/kvm/vgic/vgic-its.c +++ b/arch/arm64/kvm/vgic/vgic-its.c @@ -2816,3 +2816,136 @@ int kvm_vgic_register_its_device(void) return kvm_register_device_ops(&kvm_arm_vgic_its_ops, KVM_DEV_TYPE_ARM_VGIC_ITS); } + +static struct vgic_its *vgic_get_its(struct kvm *kvm, + struct kvm_kernel_irq_routing_entry *irq_entry) +{ + struct kvm_msi msi = (struct kvm_msi) { + .address_lo = irq_entry->msi.address_lo, + .address_hi = irq_entry->msi.address_hi, + .data = irq_entry->msi.data, + .flags = irq_entry->msi.flags, + .devid = irq_entry->msi.devid, + }; + + return vgic_msi_to_its(kvm, &msi); +} + +/* + * debug_gic_msi_setup_mock_msi - manually set up vLPI direct injection infrastructure + * for an MSI upon userspace request. Used for testing vLPIs from selftests. + * + * Creates an IRQ routing entry mapping the specified MSI signature to a mock + * host IRQ, then populates ITS structures (device, collection, ITE) to establish + * the DevID/EventID to LPI translation. Finally enables GICv4 vLPI forwarding + * to bypass software emulation and inject interrupts directly to the vCPU. + * + * This function is intended solely for KVM selftests via KVM_DEBUG_GIC_MSI_SETUP. + * It uses mock host IRQs in the SPI range assuming no real hardware devices are + * present on a selftest guest. Using this interface in production will corrupt the + * IRQ routing table. + */ +int debug_gic_msi_setup_mock_msi(struct kvm *kvm, struct kvm_debug_gic_msi_setup *params) +{ + struct kvm_irq_routing_entry user_entry; + struct kvm_kernel_irq_routing_entry entry; + struct vgic_its *its; + struct its_device *device; + struct its_collection *collection; + struct its_ite *ite; + struct vgic_irq *irq; + struct kvm_vcpu *vcpu; + u64 doorbell_addr = GITS_BASE_GPA + GITS_TRANSLATER; + u32 device_id = params->device_id; + u32 event_id = params->event_id; + u32 coll_id = params->vcpu_id; + u32 lpi_nr = params->vintid; + gpa_t itt_addr = params->itt_addr; + int ret; + int host_irq = params->host_irq; + + // Unmap any existing vLPI on the mock host IRQ (remnants from prior mocks) + kvm_vgic_v4_unset_forwarding(kvm, host_irq); + + /* Create mock user IRQ routing entry using kvm_set_routing_entry function */ + memset(&user_entry, 0, sizeof(user_entry)); + user_entry.gsi = host_irq; + user_entry.type = KVM_IRQ_ROUTING_MSI; + user_entry.u.msi.address_lo = doorbell_addr & 0xFFFFFFFF; + user_entry.u.msi.address_hi = doorbell_addr >> 32; + user_entry.u.msi.data = event_id; + user_entry.u.msi.devid = device_id; + user_entry.flags = KVM_MSI_VALID_DEVID; + + /* Initialize kernel routing entry */ + memset(&entry, 0, sizeof(entry)); + + /* Use vgic-irqfd.c function to create entry */ + ret = kvm_set_routing_entry(kvm, &entry, &user_entry); + if (ret) + return ret; + + /* Now that we created an MSI -> ITS mapping, we can populate the ITS for this MSI */ + + /* Get ITS instance */ + its = vgic_get_its(kvm, &entry); + if (IS_ERR(its)) + return PTR_ERR(its); + + /* Enable ITS manually for testing, normally done by guest writing to GITS_CTLR register */ + its->enabled = true; + + /* Get target vCPU */ + vcpu = kvm_get_vcpu(kvm, params->vcpu_id); + if (!vcpu) + return -EINVAL; + + /* + * Enable this vLPIs for this vCPU manually for testing, normally + * done by guest writing GICR_CTLR + */ + atomic_set(&vcpu->arch.vgic_cpu.ctlr, GICR_CTLR_ENABLE_LPIS); + + mutex_lock(&its->its_lock); + + /* Create ITS device */ + device = vgic_its_alloc_device(its, device_id, itt_addr, 8); + if (IS_ERR(device)) { + ret = PTR_ERR(device); + goto unlock; + } + + /* Create collection mapped to inputted vcpu */ + ret = vgic_its_alloc_collection(its, &collection, coll_id); + if (ret) + goto unlock; + + collection->target_addr = params->vcpu_id; // Map to specified vcpu + + /* Create ITE */ + ite = vgic_its_alloc_ite(device, collection, event_id); + if (IS_ERR(ite)) { + ret = PTR_ERR(ite); + vgic_its_free_collection(its, coll_id); + goto unlock; + } + + /* Create LPI */ + irq = vgic_add_lpi(kvm, lpi_nr, vcpu); + if (IS_ERR(irq)) { + ret = PTR_ERR(irq); + its_free_ite(kvm, ite); + vgic_its_free_collection(its, coll_id); + goto unlock; + } + + ite->irq = irq; + mutex_unlock(&its->its_lock); + + /* Now that routing entry is initialized, call v4 forwarding setup */ + return kvm_vgic_v4_set_forwarding(kvm, host_irq, &entry); + +unlock: + mutex_unlock(&its->its_lock); + return ret; +} diff --git a/arch/arm64/kvm/vgic/vgic.h b/arch/arm64/kvm/vgic/vgic.h index de1c1d3261c3..8c8f1e963884 100644 --- a/arch/arm64/kvm/vgic/vgic.h +++ b/arch/arm64/kvm/vgic/vgic.h @@ -432,4 +432,6 @@ static inline bool vgic_is_v3(struct kvm *kvm) int vgic_its_debug_init(struct kvm_device *dev); void vgic_its_debug_destroy(struct kvm_device *dev); +int debug_gic_msi_setup_mock_msi(struct kvm *kvm, struct kvm_debug_gic_msi_setup *params); + #endif diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index 70c0948f978e..76beac55cb69 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -378,6 +378,7 @@ #define GITS_CIDR3 0xfffc #define GITS_TRANSLATER 0x10040 +#define GITS_BASE_GPA 0x8000000ULL #define GITS_SGIR 0x20020 diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index f0f0d49d2544..a655bbb70e99 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1440,6 +1440,21 @@ struct kvm_enc_region { #define KVM_GET_SREGS2 _IOR(KVMIO, 0xcc, struct kvm_sregs2) #define KVM_SET_SREGS2 _IOW(KVMIO, 0xcd, struct kvm_sregs2) +/* + * Generate an IRQ routing entry and vLPI tables for userspace-sourced + * MSI, enabling direct vLPI injection testing from selftests + */ +#define KVM_DEBUG_GIC_MSI_SETUP _IOW(KVMIO, 0xf0, struct kvm_debug_gic_msi_setup) + +struct kvm_debug_gic_msi_setup { + __u32 device_id; + __u32 event_id; + __u32 vcpu_id; + __u32 vintid; + __u32 host_irq; + __u64 itt_addr; +}; + #define KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE (1 << 0) #define KVM_DIRTY_LOG_INITIALLY_SET (1 << 1) diff --git a/tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c b/tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c index fc4fe52fb6f8..8350665d9bdc 100644 --- a/tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c +++ b/tools/testing/selftests/kvm/arm64/vgic_lpi_stress.c @@ -18,10 +18,14 @@ #include "ucall.h" #include "vgic.h" +#define KVM_DEBUG_GIC_MSI_SETUP _IOW(KVMIO, 0xf0, struct kvm_debug_gic_msi_setup) + #define TEST_MEMSLOT_INDEX 1 #define GIC_LPI_OFFSET 8192 +static bool vlpi_enabled; + static size_t nr_iterations = 1000; static vm_paddr_t gpa_base; @@ -220,6 +224,21 @@ static void setup_gic(void) its_fd = vgic_its_setup(vm); } +static int enable_msi_vlpi_injection(u32 device_id, u32 event_id, + u32 vcpu_id, u32 vintid, u32 host_irq) +{ + struct kvm_debug_gic_msi_setup params = { + .device_id = device_id, + .event_id = event_id, + .vcpu_id = vcpu_id, + .vintid = vintid, + .host_irq = host_irq, + .itt_addr = test_data.itt_tables + (device_id * SZ_64K) + }; + + return __vm_ioctl(vm, KVM_DEBUG_GIC_MSI_SETUP, &params); +} + static void signal_lpi(u32 device_id, u32 event_id) { vm_paddr_t db_addr = GITS_BASE_GPA + GITS_TRANSLATER; @@ -267,6 +286,30 @@ static void *vcpu_worker_thread(void *data) switch (get_ucall(vcpu, &uc)) { case UCALL_SYNC: + /* if flag is set, set direct injection mappings for MSIs */ + if (vlpi_enabled) { + u32 intid = GIC_LPI_OFFSET; + + for (u32 device_id = 0; device_id < test_data.nr_devices; + device_id++) { + for (u32 event_id = 0; event_id < test_data.nr_event_ids; + event_id++) { + + /* we mock host_irqs in the SPI interrupt range of + * 100-1020 since selftest guests have no hardware + * devices + */ + int ret = enable_msi_vlpi_injection(device_id, + event_id, vcpu->id, intid, + intid - GIC_LPI_OFFSET + 100); + TEST_ASSERT(ret == 0, "KVM_DEBUG_GIC_MSI_SETUP failed: %d", + ret); + + intid++; + } + } + } + pthread_barrier_wait(&test_setup_barrier); continue; case UCALL_DONE: @@ -362,7 +405,9 @@ static void destroy_vm(void) static void pr_usage(const char *name) { - pr_info("%s [-v NR_VCPUS] [-d NR_DEVICES] [-e NR_EVENTS] [-i ITERS] -h\n", name); + pr_info("%s -D [-v NR_VCPUS] [-d NR_DEVICES] [-e NR_EVENTS] [-i ITERS] -h\n", name); + pr_info(" -D:\tenable direct vLPI injection (default: %s)\n", + vlpi_enabled ? "true" : "false"); pr_info(" -v:\tnumber of vCPUs (default: %u)\n", test_data.nr_cpus); pr_info(" -d:\tnumber of devices (default: %u)\n", test_data.nr_devices); pr_info(" -e:\tnumber of event IDs per device (default: %u)\n", test_data.nr_event_ids); @@ -374,8 +419,11 @@ int main(int argc, char **argv) u32 nr_threads; int c; - while ((c = getopt(argc, argv, "hv:d:e:i:")) != -1) { + while ((c = getopt(argc, argv, "hDv:d:e:i:")) != -1) { switch (c) { + case 'D': + vlpi_enabled = true; + break; case 'v': test_data.nr_cpus = atoi(optarg); break; -- 2.50.1 (Apple Git-155) Amazon Web Services Development Center Germany GmbH Tamara-Danz-Str. 13 10243 Berlin Geschaeftsfuehrung: Christian Schlaeger Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B Sitz: Berlin Ust-ID: DE 365 538 597

3 weeks, 3 days

2
1
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[PATCH net-next v2 0/6] netconsole: support automatic target recovery

by Andre Carvalho

This patchset introduces target resume capability to netconsole allowing it to recover targets when underlying low-level interface comes back online. The patchset starts by refactoring netconsole state representation in order to allow representing deactivated targets (targets that are disabled due to interfaces going down). It then modifies netconsole to handle NETDEV_UP events for such targets and setups netpoll. The patchset includes a selftest that validates netconsole target state transitions and that target is functional after resumed. Signed-off-by: Andre Carvalho <asantostc(a)gmail.com> --- Changes in v2: - Attempt to resume target in the same thread, instead of using workqueue . - Add wrapper around __netpoll_setup (patch 4). - Renamed resume_target to maybe_resume_target and moved conditionals to inside its implementation, keeping code more clear. - Verify that device addr matches target mac address when target was setup using mac. - Update selftest to cover targets bound by mac and interface name. - Fix typo in selftest comment and sort tests alphabetically in Makefile. - Link to v1: https://lore.kernel.org/r/20250909-netcons-retrigger-v1-0-3aea904926cf@gmai… --- Andre Carvalho (4): netconsole: convert 'enabled' flag to enum for clearer state management netpoll: add wrapper around __netpoll_setup with dev reference netconsole: resume previously deactivated target selftests: netconsole: validate target reactivation Breno Leitao (2): netconsole: add target_state enum netconsole: add STATE_DEACTIVATED to track targets disabled by low level drivers/net/netconsole.c | 102 +++++++++++++++------ include/linux/netpoll.h | 1 + net/core/netpoll.c | 20 ++++ tools/testing/selftests/drivers/net/Makefile | 1 + .../selftests/drivers/net/lib/sh/lib_netcons.sh | 30 +++++- .../selftests/drivers/net/netcons_resume.sh | 92 +++++++++++++++++++ 6 files changed, 216 insertions(+), 30 deletions(-) --- base-commit: 312e6f7676e63bbb9b81e5c68e580a9f776cc6f0 change-id: 20250816-netcons-retrigger-a4f547bfc867 Best regards, -- Andre Carvalho <asantostc(a)gmail.com>

3 weeks, 3 days

3
13
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[PATCH v2 00/11] Start porting UML to nolibc

by Benjamin Berg

From: Benjamin Berg <benjamin.berg(a)intel.com> This patchset is an attempt to start a nolibc port of UML. The goal is to port UML to use nolibc in smaller chunks to make the switch more manageable. There are three parts to this patchset: * Two patches to use tools/include headers instead of kernel headers for userspace files. * A few nolibc fixes and a new NOLIBC_NO_STARTCODE compile flag for it * Finally nolibc build support for UML and switching two files while adding the appropriate support in nolibc itself. v1 of this patchset was https://lore.kernel.org/all/20250915071115.1429196-1-benjamin@sipsolutions.… Changes in v2: - add sys/uio.h and sys/ptrace.h to nolibc - Use NOLIBC_NO_RUNTIME to disable nolibc startup code - Fix out-of-tree build - various small improvements and cleanups Should the nolibc changes be merged separately or could everything go through the same branch? Also, what about tools/include/linux/compiler.h? It seems that was added for the tracing code, but it is not clear to me who might ACK that fix. Benjamin Benjamin Berg (11): tools compiler.h: fix __used definition um: use tools/include for user files tools/nolibc/stdio: remove perror if NOLIBC_IGNORE_ERRNO is set tools/nolibc/dirent: avoid errno in readdir_r tools/nolibc: use __fallthrough__ rather than fallthrough tools/nolibc: add option to disable runtime um: add infrastructure to build files using nolibc um: use nolibc for the --showconfig implementation tools/nolibc: add uio.h with readv and writev tools/nolibc: add ptrace support um: switch ptrace FP register access to nolibc arch/um/Makefile | 38 +++++++++++--- arch/um/include/shared/init.h | 2 +- arch/um/include/shared/os.h | 2 + arch/um/include/shared/user.h | 6 --- arch/um/kernel/Makefile | 2 +- arch/um/kernel/skas/stub.c | 1 + arch/um/kernel/skas/stub_exe.c | 4 +- arch/um/os-Linux/skas/process.c | 6 +-- arch/um/os-Linux/start_up.c | 4 +- arch/um/scripts/Makefile.rules | 10 +++- arch/x86/um/Makefile | 6 ++- arch/x86/um/os-Linux/Makefile | 5 +- arch/x86/um/os-Linux/registers.c | 16 ++---- arch/x86/um/user-offsets.c | 1 - tools/include/linux/compiler.h | 2 +- tools/include/nolibc/Makefile | 2 + tools/include/nolibc/arch-arm.h | 2 + tools/include/nolibc/arch-arm64.h | 2 + tools/include/nolibc/arch-loongarch.h | 2 + tools/include/nolibc/arch-m68k.h | 2 + tools/include/nolibc/arch-mips.h | 2 + tools/include/nolibc/arch-powerpc.h | 2 + tools/include/nolibc/arch-riscv.h | 2 + tools/include/nolibc/arch-s390.h | 2 + tools/include/nolibc/arch-sh.h | 2 + tools/include/nolibc/arch-sparc.h | 2 + tools/include/nolibc/arch-x86.h | 4 ++ tools/include/nolibc/compiler.h | 4 +- tools/include/nolibc/crt.h | 3 ++ tools/include/nolibc/dirent.h | 6 +-- tools/include/nolibc/nolibc.h | 2 + tools/include/nolibc/stackprotector.h | 2 + tools/include/nolibc/stdio.h | 2 + tools/include/nolibc/stdlib.h | 2 + tools/include/nolibc/sys.h | 3 +- tools/include/nolibc/sys/auxv.h | 3 ++ tools/include/nolibc/sys/ptrace.h | 52 ++++++++++++++++++++ tools/include/nolibc/sys/uio.h | 49 ++++++++++++++++++ tools/testing/selftests/nolibc/nolibc-test.c | 11 +++++ 39 files changed, 222 insertions(+), 48 deletions(-) create mode 100644 tools/include/nolibc/sys/ptrace.h create mode 100644 tools/include/nolibc/sys/uio.h -- 2.51.0

3 weeks, 3 days

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[PATCH] Net: psock_tpacket: Fix null argument warning in walk_tx

by Wake Liu

The sendto() call in walk_tx() was passing NULL as the buffer argument, which can trigger a -Wnonnull warning with some compilers. Although the size is 0 and no data is actually sent, passing a null pointer is technically incorrect. This commit changes NULL to an empty string literal ("") to satisfy the non-null argument requirement and fix the compiler warning. Signed-off-by: Wake Liu <wakel(a)google.com> --- tools/testing/selftests/net/psock_tpacket.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c index 221270cee3ea..0c24adbb292e 100644 --- a/tools/testing/selftests/net/psock_tpacket.c +++ b/tools/testing/selftests/net/psock_tpacket.c @@ -470,7 +470,7 @@ static void walk_tx(int sock, struct ring *ring) bug_on(total_packets != 0); - ret = sendto(sock, NULL, 0, 0, NULL, 0); + ret = sendto(sock, "", 0, 0, NULL, 0); if (ret == -1) { perror("sendto"); exit(1); -- 2.51.0.534.gc79095c0ca-goog

3 weeks, 3 days

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[PATCH] selftests/kvm: remove stale TODO in xapic_state_test

by Sukrut Heroorkar

The TODO about using the number of vCPUs instead of vcpu.id + 1 was already addressed by commit 376bc1b458c9 ("KVM: selftests: Don't assume vcpu->id is '0' in xAPIC state test"). The comment is now stale and can be removed. Signed-off-by: Sukrut Heroorkar <hsukrut3(a)gmail.com> --- tools/testing/selftests/kvm/x86/xapic_state_test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/x86/xapic_state_test.c b/tools/testing/selftests/kvm/x86/xapic_state_test.c index fdebff1165c7..3b4814c55722 100644 --- a/tools/testing/selftests/kvm/x86/xapic_state_test.c +++ b/tools/testing/selftests/kvm/x86/xapic_state_test.c @@ -120,8 +120,8 @@ static void test_icr(struct xapic_vcpu *x) __test_icr(x, icr | i); /* - * Send all flavors of IPIs to non-existent vCPUs. TODO: use number of - * vCPUs, not vcpu.id + 1. Arbitrarily use vector 0xff. + * Send all flavors of IPIs to non-existent vCPUs. Arbitrarily use + * vector 0xff. */ icr = APIC_INT_ASSERT | 0xff; for (i = 0; i < 0xff; i++) { -- 2.43.0

3 weeks, 3 days

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[PATCH] selftests/iommu: prevent use of uninitialized variable

by Alessandro Zanni

Fix to avoid the usage of the `res` variable uninitialized in the following macro expansions. It solves the following warning: In function ‘iommufd_viommu_vdevice_alloc’, inlined from ‘wrapper_iommufd_viommu_vdevice_alloc’ at iommufd.c:2889:1: ../kselftest_harness.h:760:12: warning: ‘ret’ may be used uninitialized [-Wmaybe-uninitialized] 760 | if (!(__exp _t __seen)) { \ | ^ ../kselftest_harness.h:513:9: note: in expansion of macro ‘__EXPECT’ 513 | __EXPECT(expected, #expected, seen, #seen, ==, 1) | ^~~~~~~~ iommufd_utils.h:1057:9: note: in expansion of macro ‘ASSERT_EQ’ 1057 | ASSERT_EQ(0, _test_cmd_trigger_vevents(self->fd, dev_id, nvevents)) | ^~~~~~~~~ iommufd.c:2924:17: note: in expansion of macro ‘test_cmd_trigger_vevents’ 2924 | test_cmd_trigger_vevents(dev_id, 3); | ^~~~~~~~~~~~~~~~~~~~~~~~ The issue can be reproduced, building the tests, with the command: make -C tools/testing/selftests TARGETS=iommu Signed-off-by: Alessandro Zanni <alessandro.zanni87(a)gmail.com> --- tools/testing/selftests/iommu/iommufd_utils.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h index 3c3e08b8c90e..4ae0fcc4f871 100644 --- a/tools/testing/selftests/iommu/iommufd_utils.h +++ b/tools/testing/selftests/iommu/iommufd_utils.h @@ -1042,7 +1042,7 @@ static int _test_cmd_trigger_vevents(int fd, __u32 dev_id, __u32 nvevents) .dev_id = dev_id, }, }; - int ret; + int ret = 0; while (nvevents--) { ret = ioctl(fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_TRIGGER_VEVENT), -- 2.43.0

3 weeks, 3 days

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[PATCH v3 0/9] rust: use `kernel::{fmt,prelude::fmt!}`

by Tamir Duberstein

This is series 2a/5 of the migration to `core::ffi::CStr`[0]. 20250704-core-cstr-prepare-v1-0-a91524037783(a)gmail.com. This series depends on the prior series[0] and is intended to go through the rust tree to reduce the number of release cycles required to complete the work. Subsystem maintainers: I would appreciate your `Acked-by`s so that this can be taken through Miguel's tree (where the other series must go). [0] https://lore.kernel.org/all/20250704-core-cstr-prepare-v1-0-a91524037783@gm… Signed-off-by: Tamir Duberstein <tamird(a)gmail.com> --- Changes in v3: - Add a patch to address new code in device.rs. - Drop incorrectly applied Acked-by tags from Danilo. - Link to v2: https://lore.kernel.org/r/20250719-core-cstr-fanout-1-v2-0-1ab5ba189c6e@gma… Changes in v2: - Rebase on rust-next. - Drop pin-init patch, which is no longer needed. - Link to v1: https://lore.kernel.org/r/20250709-core-cstr-fanout-1-v1-0-64308e7203fc@gma… --- Tamir Duberstein (9): gpu: nova-core: use `kernel::{fmt,prelude::fmt!}` rust: alloc: use `kernel::{fmt,prelude::fmt!}` rust: block: use `kernel::{fmt,prelude::fmt!}` rust: device: use `kernel::{fmt,prelude::fmt!}` rust: file: use `kernel::{fmt,prelude::fmt!}` rust: kunit: use `kernel::{fmt,prelude::fmt!}` rust: seq_file: use `kernel::{fmt,prelude::fmt!}` rust: sync: use `kernel::{fmt,prelude::fmt!}` rust: device: use `kernel::{fmt,prelude::fmt!}` drivers/block/rnull.rs | 2 +- drivers/gpu/nova-core/gpu.rs | 3 +-- drivers/gpu/nova-core/regs/macros.rs | 6 +++--- rust/kernel/alloc/kbox.rs | 2 +- rust/kernel/alloc/kvec.rs | 2 +- rust/kernel/alloc/kvec/errors.rs | 2 +- rust/kernel/block/mq.rs | 2 +- rust/kernel/block/mq/gen_disk.rs | 2 +- rust/kernel/block/mq/raw_writer.rs | 3 +-- rust/kernel/device.rs | 6 +++--- rust/kernel/device/property.rs | 23 ++++++++++++----------- rust/kernel/fs/file.rs | 5 +++-- rust/kernel/kunit.rs | 8 ++++---- rust/kernel/seq_file.rs | 6 +++--- rust/kernel/sync/arc.rs | 2 +- scripts/rustdoc_test_gen.rs | 2 +- 16 files changed, 38 insertions(+), 38 deletions(-) --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20250709-core-cstr-fanout-1-f20611832272 Best regards, -- Tamir Duberstein <tamird(a)gmail.com>

3 weeks, 4 days

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[PATCH net-next] selftests: rtnetlink: correct error message in rtnetlink.sh fou test

by Alok Tiwari

The rtnetlink FOU selftest prints an incorrect string: "FAIL: fou"s. Change it to the intended "FAIL: fou" by removing a stray character in the end_test string of the test. Signed-off-by: Alok Tiwari <alok.a.tiwari(a)oracle.com> --- tools/testing/selftests/net/rtnetlink.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh index d6c00efeb664..24bba74c77ee 100755 --- a/tools/testing/selftests/net/rtnetlink.sh +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -519,7 +519,7 @@ kci_test_encap_fou() run_cmd_fail ip -netns "$testns" fou del port 9999 run_cmd ip -netns "$testns" fou del port 7777 if [ $ret -ne 0 ]; then - end_test "FAIL: fou"s + end_test "FAIL: fou" return 1 fi -- 2.50.1

3 weeks, 4 days

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