- Linux-kselftest-mirror - lists.linaro.org

[RFC PATCH v2 0/3] Add testable code specifications

by Gabriele Paoloni

[1] was an initial proposal defining testable code specifications for some functions in /drivers/char/mem.c. However a Guideline to write such specifications was missing and test cases tracing to such specifications were missing. This patchset represents a next step and is organised as follows: - patch 1/3 contains the Guideline for writing code specifications - patch 2/3 contains examples of code specfications defined for some functions of drivers/char/mem.c - patch 3/3 contains examples of selftests that map to some code specifications of patch 2/3 [1] https://lore.kernel.org/all/20250821170419.70668-1-gpaoloni@redhat.com/ --- Changes from v1: 1) Added a Guideline to write code specifications in the Linux Kernel Documentation 2) Addressed Greg KH comments in /drivers/char/mem.c 3) Added example of test cases mapping to the code specifications in /drivers/char/mem.c --- Alessandro Carminati (1): selftests/devmem: initial testset Gabriele Paoloni (2): Documentation: add guidelines for writing testable code specifications /dev/mem: Add initial documentation of memory_open() and mem_fops .../doc-guide/code-specifications.rst | 208 +++++++ Documentation/doc-guide/index.rst | 1 + drivers/char/mem.c | 231 ++++++- tools/testing/selftests/Makefile | 1 + tools/testing/selftests/devmem/Makefile | 13 + tools/testing/selftests/devmem/debug.c | 25 + tools/testing/selftests/devmem/debug.h | 14 + tools/testing/selftests/devmem/devmem.c | 200 ++++++ tools/testing/selftests/devmem/ram_map.c | 250 ++++++++ tools/testing/selftests/devmem/ram_map.h | 38 ++ tools/testing/selftests/devmem/secret.c | 46 ++ tools/testing/selftests/devmem/secret.h | 13 + tools/testing/selftests/devmem/tests.c | 569 ++++++++++++++++++ tools/testing/selftests/devmem/tests.h | 45 ++ tools/testing/selftests/devmem/utils.c | 379 ++++++++++++ tools/testing/selftests/devmem/utils.h | 119 ++++ 16 files changed, 2146 insertions(+), 6 deletions(-) create mode 100644 Documentation/doc-guide/code-specifications.rst create mode 100644 tools/testing/selftests/devmem/Makefile create mode 100644 tools/testing/selftests/devmem/debug.c create mode 100644 tools/testing/selftests/devmem/debug.h create mode 100644 tools/testing/selftests/devmem/devmem.c create mode 100644 tools/testing/selftests/devmem/ram_map.c create mode 100644 tools/testing/selftests/devmem/ram_map.h create mode 100644 tools/testing/selftests/devmem/secret.c create mode 100644 tools/testing/selftests/devmem/secret.h create mode 100644 tools/testing/selftests/devmem/tests.c create mode 100644 tools/testing/selftests/devmem/tests.h create mode 100644 tools/testing/selftests/devmem/utils.c create mode 100644 tools/testing/selftests/devmem/utils.h -- 2.48.1

5 days

7
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[PATCH net 0/2] netconsole: Fix userdata race condition

by Gustavo Luiz Duarte

This series fixes a race condition in netconsole's userdata handling where concurrent message transmission could read partially updated userdata fields, resulting in corrupted netconsole output. The first patch adds a selftest that reproduces the race condition by continuously sending messages while rapidly changing userdata values, detecting any torn reads in the output. The second patch fixes the issue by ensuring update_userdata() holds the target_list_lock while updating both extradata_complete and userdata_length, preventing readers from seeing inconsistent state. This targets net tree as it fixes a bug introduced in commit df03f830d099 ("net: netconsole: cache userdata formatted string in netconsole_target"). Signed-off-by: Gustavo Luiz Duarte <gustavold(a)gmail.com> --- Gustavo Luiz Duarte (2): selftests: netconsole: Add race condition test for userdata corruption netconsole: Fix race condition in between reader and writer of userdata drivers/net/netconsole.c | 5 ++ .../selftests/drivers/net/netcons_race_userdata.sh | 87 ++++++++++++++++++++++ 2 files changed, 92 insertions(+) --- base-commit: ffff5c8fc2af2218a3332b3d5b97654599d50cde change-id: 20251020-netconsole-fix-race-f465f37b57ea Best regards, -- Gustavo Luiz Duarte <gustavold(a)gmail.com>

5 days, 2 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

5 days, 2 hours

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[PATCH v4 00/23] ARM64 PMU Partitioning

by Colton Lewis

This series creates a new PMU scheme on ARM, a partitioned PMU that allows reserving a subset of counters for more direct guest access, significantly reducing overhead. More details, including performance benchmarks, can be read in the v1 cover letter linked below. v4: * Apply Mark Brown's non-UNDEF FGT control commit to the PMU FGT controls and calculate those controls with the others in kvm_calculate_traps() * Introduce lazy context swaps for guests that only turns on for guests that have enabled partitioning and accessed PMU registers. * Rename pmu-part.c to pmu-direct.c because future features might achieve direct PMU access without partitioning. * Better explain certain commits, such as why the untrapped registers are safe to untrap. * Reduce the PMU include cleanup down to only what is still necessary and explain why. v3: https://lore.kernel.org/kvm/20250626200459.1153955-1-coltonlewis@google.com/ v2: https://lore.kernel.org/kvm/20250620221326.1261128-1-coltonlewis@google.com/ v1: https://lore.kernel.org/kvm/20250602192702.2125115-1-coltonlewis@google.com/ Colton Lewis (21): arm64: cpufeature: Add cpucap for HPMN0 KVM: arm64: Reorganize PMU functions perf: arm_pmuv3: Introduce method to partition the PMU perf: arm_pmuv3: Generalize counter bitmasks perf: arm_pmuv3: Keep out of guest counter partition KVM: arm64: Account for partitioning in kvm_pmu_get_max_counters() KVM: arm64: Set up FGT for Partitioned PMU KVM: arm64: Writethrough trapped PMEVTYPER register KVM: arm64: Use physical PMSELR for PMXEVTYPER if partitioned KVM: arm64: Writethrough trapped PMOVS register KVM: arm64: Write fast path PMU register handlers KVM: arm64: Setup MDCR_EL2 to handle a partitioned PMU KVM: arm64: Account for partitioning in PMCR_EL0 access KVM: arm64: Context swap Partitioned PMU guest registers KVM: arm64: Enforce PMU event filter at vcpu_load() KVM: arm64: Extract enum debug_owner to enum vcpu_register_owner KVM: arm64: Implement lazy PMU context swaps perf: arm_pmuv3: Handle IRQs for Partitioned PMU guest counters KVM: arm64: Inject recorded guest interrupts KVM: arm64: Add ioctl to partition the PMU when supported KVM: arm64: selftests: Add test case for partitioned PMU Marc Zyngier (1): KVM: arm64: Reorganize PMU includes Mark Brown (1): KVM: arm64: Introduce non-UNDEF FGT control Documentation/virt/kvm/api.rst | 21 + arch/arm/include/asm/arm_pmuv3.h | 38 + arch/arm64/include/asm/arm_pmuv3.h | 61 +- arch/arm64/include/asm/kvm_host.h | 34 +- arch/arm64/include/asm/kvm_pmu.h | 123 +++ arch/arm64/include/asm/kvm_types.h | 7 +- arch/arm64/kernel/cpufeature.c | 8 + arch/arm64/kvm/Makefile | 2 +- arch/arm64/kvm/arm.c | 22 + arch/arm64/kvm/debug.c | 33 +- arch/arm64/kvm/hyp/include/hyp/debug-sr.h | 6 +- arch/arm64/kvm/hyp/include/hyp/switch.h | 181 ++++- arch/arm64/kvm/pmu-direct.c | 395 ++++++++++ arch/arm64/kvm/pmu-emul.c | 674 +--------------- arch/arm64/kvm/pmu.c | 725 ++++++++++++++++++ arch/arm64/kvm/sys_regs.c | 137 +++- arch/arm64/tools/cpucaps | 1 + arch/arm64/tools/sysreg | 6 +- drivers/perf/arm_pmuv3.c | 128 +++- include/linux/perf/arm_pmu.h | 1 + include/linux/perf/arm_pmuv3.h | 14 +- include/uapi/linux/kvm.h | 4 + tools/include/uapi/linux/kvm.h | 2 + .../selftests/kvm/arm64/vpmu_counter_access.c | 62 +- 24 files changed, 1910 insertions(+), 775 deletions(-) create mode 100644 arch/arm64/kvm/pmu-direct.c base-commit: 79150772457f4d45e38b842d786240c36bb1f97f -- 2.50.0.727.gbf7dc18ff4-goog

5 days, 3 hours

3
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next-20251020: selftests: helpers.h:10:10: fatal error: kselftest.h: No such file or directory

by Naresh Kamboju

The selftests x86_64 builds failed due to following build warnings / errors on the Linux next-20251020 and next-20251021 tags with gcc-14 and clang-21. First seen on next-20251020 Good: next-20251020 Bad: next-20251017 Regression Analysis: - New regression? yes - Reproducibility? yes ### Build errors x86_64-linux-gnu-gcc -m64 -o kselftest/x86/single_step_syscall_64 -O2 -g -std=gnu99 -pthread -Wall -isystem usr/include -no-pie -DCAN_BUILD_64 single_step_syscall.c -lrt -ldl In file included from single_step_syscall.c:34: helpers.h:10:10: fatal error: kselftest.h: No such file or directory 10 | #include "kselftest.h" | ^~~~~~~~~~~~~ compilation terminated. make[4]: *** [Makefile:86: kselftest/x86/single_step_syscall_64] Error 1 ### Suspected patch git log --oneline next-20251017..next-20251020 -- tools/testing/selftests/x86/ 4d89827dfb274 selftests: complete kselftest include centralization Build regressions: next-20251020: selftests: helpers.h:10:10: fatal error: kselftest.h: No such file or directory Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> ### Steps to reproduce - tuxmake --runtime podman --target-arch x86_64 --toolchain gcc-14 \ --kconfig https://storage.tuxsuite.com/public/linaro/lkft/builds/34JgN0fZ9uXj6HVnjvjq… \ debugkernel cpupower headers kernel kselftest modules ## Source * Kernel version: 6.18.0-rc2 * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git * Git describe: next-20251021 and next-20251020 * Git commit: fe45352cd106ae41b5ad3f0066c2e54dbb2dfd70 * Architectures: x86_64 * Toolchains: gcc-14 and clang-21 * Kconfigs: defconfig+selftests/*/configs ## Build * Build log: https://storage.tuxsuite.com/public/linaro/lkft/builds/34JgN0fZ9uXj6HVnjvjq… * Build details: https://regressions.linaro.org/lkft/linux-next-master/next-20251020/kselfte… * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/34JgN0fZ9uXj6HVnjvjq… * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/34JgN0fZ9uXj6HVnjvjq… -- Linaro LKFT https://lkft.linaro.org

5 days, 3 hours

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[PATCH] selftest: net: prevent use of uninitialized variable

by Alessandro Zanni

Fix to avoid the usage of the `ret` variable uninitialized in the following macro expansions. It solves the following warning: In file included from netlink-dumps.c:21: netlink-dumps.c: In function ‘dump_extack’: ../kselftest_harness.h:788:35: warning: ‘ret’ may be used uninitialized [-Wmaybe-uninitialized] 788 | intmax_t __exp_print = (intmax_t)__exp; \ | ^~~~~~~~~~~ ../kselftest_harness.h:631:9: note: in expansion of macro ‘__EXPECT’ 631 | __EXPECT(expected, #expected, seen, #seen, ==, 0) | ^~~~~~~~ netlink-dumps.c:169:9: note: in expansion of macro ‘EXPECT_EQ’ 169 | EXPECT_EQ(ret, FOUND_EXTACK); | ^~~~~~~~~ The issue can be reproduced, building the tests, with the command: make -C tools/testing/selftests TARGETS=net Signed-off-by: Alessandro Zanni <alessandro.zanni87(a)gmail.com> --- tools/testing/selftests/net/netlink-dumps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/netlink-dumps.c b/tools/testing/selftests/net/netlink-dumps.c index 7618ebe528a4..8ebb8b1b9c5c 100644 --- a/tools/testing/selftests/net/netlink-dumps.c +++ b/tools/testing/selftests/net/netlink-dumps.c @@ -112,7 +112,7 @@ static const struct { TEST(dump_extack) { int netlink_sock; - int i, cnt, ret; + int i, cnt, ret = 0; char buf[8192]; int one = 1; ssize_t n; -- 2.43.0

5 days, 3 hours

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[PATCH nf-next v7 0/3] Add IPIP flowtable SW acceleration

by Lorenzo Bianconi

Introduce SW acceleration for IPIP tunnels in the netfilter flowtable infrastructure. This series introduces basic infrastructure to accelerate other tunnel types (e.g. IP6IP6). --- Changes in v7: - Introduce sw acceleration for tx path of IPIP tunnels - Rely on exact match during flowtable entry lookup - Fix typos - Link to v6: https://lore.kernel.org/r/20250818-nf-flowtable-ipip-v6-0-eda90442739c@kern… Changes in v6: - Rebase on top of nf-next main branch - Link to v5: https://lore.kernel.org/r/20250721-nf-flowtable-ipip-v5-0-0865af9e58c6@kern… Changes in v5: - Rely on __ipv4_addr_hash() to compute the hash used as encap ID - Remove unnecessary pskb_may_pull() in nf_flow_tuple_encap() - Add nf_flow_ip4_ecanp_pop utility routine - Link to v4: https://lore.kernel.org/r/20250718-nf-flowtable-ipip-v4-0-f8bb1c18b986@kern… Changes in v4: - Use the hash value of the saddr, daddr and protocol of outer IP header as encapsulation id. - Link to v3: https://lore.kernel.org/r/20250703-nf-flowtable-ipip-v3-0-880afd319b9f@kern… Changes in v3: - Add outer IP header sanity checks - target nf-next tree instead of net-next - Link to v2: https://lore.kernel.org/r/20250627-nf-flowtable-ipip-v2-0-c713003ce75b@kern… Changes in v2: - Introduce IPIP flowtable selftest - Link to v1: https://lore.kernel.org/r/20250623-nf-flowtable-ipip-v1-1-2853596e3941@kern… --- Lorenzo Bianconi (3): net: netfilter: Add IPIP flowtable rx sw acceleration net: netfilter: Add IPIP flowtable tx sw acceleration selftests: netfilter: nft_flowtable.sh: Add IPIP flowtable selftest include/linux/netdevice.h | 16 +++ include/net/netfilter/nf_flow_table.h | 26 +++++ net/ipv4/ipip.c | 29 +++++ net/netfilter/nf_flow_table_core.c | 10 ++ net/netfilter/nf_flow_table_ip.c | 118 ++++++++++++++++++++- net/netfilter/nft_flow_offload.c | 79 ++++++++++++-- .../selftests/net/netfilter/nft_flowtable.sh | 40 +++++++ 7 files changed, 307 insertions(+), 11 deletions(-) --- base-commit: d1d7998df9d7d3ee20bcfc876065fa897b11506d change-id: 20250623-nf-flowtable-ipip-1b3d7b08d067 Best regards, -- Lorenzo Bianconi <lorenzo(a)kernel.org>

5 days, 3 hours

2
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Zwrot

by Eryk Wawrzyn

Dzień dobry, kontaktuję się w imieniu kancelarii specjalizującej się w zarządzaniu wierzytelnościami. Od lat wspieramy firmy w odzyskiwaniu należności. Prowadzimy kompleksową obsługę na etapach: przedsądowym, sądowym i egzekucyjnym, dostosowując działania do branży Klienta. Kiedy możemy porozmawiać? Pozdrawiam Eryk Wawrzyn

5 days, 9 hours

1
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[PATCH net 0/5] mptcp: handle late ADD_ADDR + selftests skip

by Matthieu Baerts (NGI0)

Here are a few independent fixes related to MPTCP and its selftests: - Patch 1: correctly handle ADD_ADDR being received after the switch to 'fully-established'. A fix for another recent fix backported up to v5.14. - Patches 2-5: properly mark some MPTCP Join subtests as 'skipped' if the tested kernel doesn't support the feature being validated. Some fixes for up to v5.13, v5.18, v6.11 and v6.18-rc1 respectively. Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- Matthieu Baerts (NGI0) (5): mptcp: pm: in-kernel: C-flag: handle late ADD_ADDR selftests: mptcp: join: mark 'flush re-add' as skipped if not supported selftests: mptcp: join: mark implicit tests as skipped if not supported selftests: mptcp: join: mark 'delete re-add signal' as skipped if not supported selftests: mptcp: join: mark laminar tests as skipped if not supported net/mptcp/pm_kernel.c | 6 ++++++ tools/testing/selftests/net/mptcp/mptcp_join.sh | 18 +++++++++--------- 2 files changed, 15 insertions(+), 9 deletions(-) --- base-commit: ffff5c8fc2af2218a3332b3d5b97654599d50cde change-id: 20251020-net-mptcp-c-flag-late-add-addr-1d954e7b63d2 Best regards, -- Matthieu Baerts (NGI0) <matttbe(a)kernel.org>

5 days, 17 hours

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[PATCH net-next v7 00/26] 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..30 ok 1 vm_server_host_client ok 2 vm_client_host_server ok 3 vm_loopback ok 4 ns_host_vsock_ns_mode_ok ok 5 ns_host_vsock_ns_mode_write_once_ok ok 6 ns_global_same_cid_fails ok 7 ns_local_same_cid_ok ok 8 ns_global_local_same_cid_ok ok 9 ns_local_global_same_cid_ok ok 10 ns_diff_global_host_connect_to_global_vm_ok ok 11 ns_diff_global_host_connect_to_local_vm_fails ok 12 ns_diff_global_vm_connect_to_global_host_ok ok 13 ns_diff_global_vm_connect_to_local_host_fails ok 14 ns_diff_local_host_connect_to_local_vm_fails ok 15 ns_diff_local_vm_connect_to_local_host_fails ok 16 ns_diff_global_to_local_loopback_local_fails ok 17 ns_diff_local_to_global_loopback_fails ok 18 ns_diff_local_to_local_loopback_fails ok 19 ns_diff_global_to_global_loopback_ok ok 20 ns_same_local_loopback_ok ok 21 ns_same_local_host_connect_to_local_vm_ok ok 22 ns_same_local_vm_connect_to_local_host_ok ok 23 ns_mode_change_connection_continue_vm_ok ok 24 ns_mode_change_connection_continue_host_ok ok 25 ns_mode_change_connection_continue_both_ok ok 26 ns_delete_vm_ok ok 27 ns_delete_host_ok ok 28 ns_delete_both_ok ok 29 ns_loopback_global_global_late_module_load_ok ok 30 ns_loopback_local_local_late_module_load_fails SUMMARY: PASS=30 SKIP=0 FAIL=0 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 v7: - fix hv_sock build - break out vmtest patches into distinct, more well-scoped patches - change `orig_net_mode` to `net_mode` - many fixes and style changes in per-patch change sets (see individual patches for specific changes) - optimize `virtio_vsock_skb_cb` layout - update commit messages with more useful descriptions - vsock_loopback: use orig_net_mode instead of current net mode - add tests for edge cases (ns deletion, mode changing, loopback module load ordering) - Link to v6: https://lore.kernel.org/r/20250916-vsock-vmtest-v6-0-064d2eb0c89d@meta.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 (26): vsock: a per-net vsock NS mode state vsock/virtio: pack struct virtio_vsock_skb_cb vsock: add netns 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: make wait_for_listener() work even if pipefail is on selftests/vsock: reuse logic for vsock_test through wrapper functions selftests/vsock: avoid multi-VM pidfile collisions with QEMU selftests/vsock: do not unconditionally die if qemu fails selftests/vsock: speed up tests by reducing the QEMU pidfile timeout selftests/vsock: add check_result() for pass/fail counting selftests/vsock: identify and execute tests that can re-use VM selftests/vsock: add namespace initialization function selftests/vsock: remove namespaces in cleanup() selftests/vsock: prepare vm management helpers for namespaces selftests/vsock: add BUILD=0 definition selftests/vsock: avoid false-positives when checking dmesg selftests/vsock: add tests for proc sys vsock ns_mode selftests/vsock: add namespace tests for CID collisions selftests/vsock: add tests for host <-> vm connectivity with namespaces selftests/vsock: add tests for namespace deletion and mode changes selftests/vsock: add tests for module loading order selftests/vsock: add 1.37 to tested virtme-ng versions MAINTAINERS | 1 + drivers/vhost/vsock.c | 48 +- include/linux/virtio_vsock.h | 47 +- include/net/af_vsock.h | 78 +- include/net/net_namespace.h | 4 + include/net/netns/vsock.h | 22 + net/vmw_vsock/af_vsock.c | 264 ++++++- net/vmw_vsock/virtio_transport.c | 7 +- net/vmw_vsock/virtio_transport_common.c | 21 +- net/vmw_vsock/vsock_loopback.c | 89 ++- tools/testing/selftests/vsock/vmtest.sh | 1320 ++++++++++++++++++++++++++++--- 11 files changed, 1729 insertions(+), 172 deletions(-) --- base-commit: 3ff9bcecce83f12169ab3e42671bd76554ca521a change-id: 20250325-vsock-vmtest-b3a21d2102c2 Best regards, -- Bobby Eshleman <bobbyeshleman(a)meta.com>

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