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

[PATCH bpf-next v3 0/2] bpf: Skip bounds adjustment for conditional jumps on same scalar register

by KaFai Wan

This small patchset is about avoid verifier bug warning when conditional jumps on same register when the register holds a scalar with range. v3: - Enhance is_scalar_branch_taken() to handle scalar case. (Eduard) - Update the selftest to cover all conditional jump opcodes. (Eduard) v2: https://lore.kernel.org/bpf/20251025053017.2308823-1-kafai.wan@linux.dev/ - Enhance is_branch_taken() and is_scalar_branch_taken() to handle branch direction computation for same register. (Eduard and Alexei) - Update the selftest. v1: https://lore.kernel.org/bpf/20251022164457.1203756-1-kafai.wan@linux.dev/ --- KaFai Wan (2): bpf: Skip bounds adjustment for conditional jumps on same scalar register selftests/bpf: Add test for conditional jumps on same scalar register kernel/bpf/verifier.c | 33 ++++ .../selftests/bpf/progs/verifier_bounds.c | 154 ++++++++++++++++++ 2 files changed, 187 insertions(+) -- 2.43.0

5 hours, 31 minutes

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[PATCH v12 00/23] TDX KVM selftests

by Sagi Shahar

This is v12 of the TDX selftests. This series is based on v6.18-rc3 Changes from v11 [1]: - Rebased on top of v6.18-rc3. - Hook vm_tdx_finalize() into kvm_arch_vm_finalize_vcpus instead of calling it as part of vm_tdx_create_with_one_vcpu. See "KVM: selftests: Finalize TD memory as part of kvm_arch_vm_finalize_vcpus" which was added to this series. - Replaced vm_tdx_create_with_one_vcpu with vm_create_shape_with_one_vcpu following Sean's patch to simplify creating VM shapes. [1] https://lore.kernel.org/lkml/20250925172851.606193-1-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 (16): 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: Finalize TD memory as part of kvm_arch_vm_finalize_vcpus KVM: selftests: Add wrapper for TDX MMIO from guest KVM: selftests: Add TDX lifecycle test Sean Christopherson (1): KVM: selftests: Add macros so simplify creating VM shapes for non-default types tools/include/linux/kbuild.h | 18 + tools/testing/selftests/kvm/Makefile.kvm | 32 ++ .../testing/selftests/kvm/include/kvm_util.h | 14 + .../selftests/kvm/include/ucall_common.h | 1 + .../selftests/kvm/include/x86/processor.h | 40 +++ .../selftests/kvm/include/x86/processor_asm.h | 12 + tools/testing/selftests/kvm/include/x86/sev.h | 2 - .../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 | 84 +++++ .../testing/selftests/kvm/include/x86/ucall.h | 6 - tools/testing/selftests/kvm/lib/kvm_util.c | 10 +- .../testing/selftests/kvm/lib/x86/processor.c | 99 ++++-- tools/testing/selftests/kvm/lib/x86/sev.c | 16 - .../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 | 330 ++++++++++++++++++ tools/testing/selftests/kvm/lib/x86/ucall.c | 46 ++- .../selftests/kvm/x86/sev_smoke_test.c | 40 +-- tools/testing/selftests/kvm/x86/tdx_vm_test.c | 33 ++ 25 files changed, 1056 insertions(+), 78 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 -- 2.51.1.851.g4ebd6896fd-goog

5 hours, 57 minutes

5
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[PATCH v5 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 v5 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 --- v5: - Move previous #11 in v4 in latter patch after discussion with RFC author. - Add #3 to update the comments for SKB_GSO_TCP_ECN and SKB_GSO_TCP_ACCECN. (Parav Pandit <parav(a)nvidia.com>) - Add gro self-test for TCP CWR flag in #4. (Eric Dumazet <edumazet(a)google.com>) - Add fixes: tag into #7 (Paolo Abeni <pabeni(a)redhat.com>) - Update commit message of #8 and if condition check (Paolo Abeni <pabeni(a)redhat.com>) - Add empty line between variable declarations and code in #13 (Paolo Abeni <pabeni(a)redhat.com>) 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. (Paolo Abeni <pabeni(a)redhat.com>) - Change TCP_CONG_WANTS_ECT_1 into individual flag add helper function INET_ECN_xmit_wants_ect_1() in #3. (Paolo Abeni <pabeni(a)redhat.com>) - Add empty line between variable declarations and code in #4. (Paolo Abeni <pabeni(a)redhat.com>) - Update commit message to fix old AccECN commits in #5. (Paolo Abeni <pabeni(a)redhat.com>) - Remove unnecessary brackets in #10. (Paolo Abeni <pabeni(a)redhat.com>) - Move patch #3 in v2 to a later Prague patch serise and remove patch #13 in v2. (Paolo Abeni <pabeni(a)redhat.com>) --- Chia-Yu Chang (12): net: update commnets for SKB_GSO_TCP_ECN and SKB_GSO_TCP_ACCECN selftests/net: gro: add self-test for TCP CWR flag 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: 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/skbuff.h | 13 ++- 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 | 37 +++++++- net/ipv4/tcp_minisocks.c | 40 +++++--- net/ipv4/tcp_offload.c | 3 +- net/ipv4/tcp_output.c | 42 ++++++--- tools/testing/selftests/net/gro.c | 80 +++++++++++----- 15 files changed, 294 insertions(+), 90 deletions(-) -- 2.34.1

8 hours, 2 minutes

3
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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>

9 hours, 12 minutes

2
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[PATCH bpf-next 0/3] selftests/bpf: small improvements on tc_tunnel

by Alexis Lothoré (eBPF Foundation)

Hello, this series is a small follow-up to the test_tc_tunnel recent integration, to address some small missing details raised during the final review ([1]). This is mostly about adding some missing checks on net namespaces management. [1] https://lore.kernel.org/bpf/1ac9d14e-4250-480c-b863-410be78ac6c6@linux.dev/ Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore(a)bootlin.com> --- Alexis Lothoré (eBPF Foundation) (3): selftests/bpf: skip tc_tunnel subtest if its setup fails selftests/bpf: add checks in tc_tunnel when entering net namespaces selftests/bpf: use start_server_str rather than start_reuseport_server in tc_tunnel .../selftests/bpf/prog_tests/test_tc_tunnel.c | 162 ++++++++++++++------- 1 file changed, 107 insertions(+), 55 deletions(-) --- base-commit: 1e2d874b04ba46a3b9fe6697097aa437641f4339 change-id: 20251030-tc_tunnel_improv-6b9d1c22c6f6 Best regards, -- Alexis Lothoré, Bootlin Embedded Linux and Kernel engineering https://bootlin.com

13 hours, 7 minutes

1
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[PATCH v2 0/2] Print map ID on successful creation

by Harshit Mogalapalli

Hi all, I have tried looking at an issue from the bpftool repository: https://github.com/libbpf/bpftool/issues/121 and this RFC tries to add that enhancement. Summary: Currently when a map creation is successful there is no message on the terminal, printing IDs on successful creation of maps can help notify the user and can be used in CI/CD. The first patch adds the logic for printing and the second patch adds a simple selftest for the same. The github issue is not fully solved with these two patches, as there are other bpf objects that might need similar additions. Would appreciate any inputs on this. Thank you very much. V1 --> V2: PATCH 1 updated [Thanks Yonghong for suggesting better way of error handling with a new label for close(fd); instead of calling multiple times] Regards, Harshit Harshit Mogalapalli (2): bpftool: Print map ID upon creation and support JSON output selftests/bpf: Add test for bpftool map ID printing tools/bpf/bpftool/map.c | 21 ++++++++--- .../testing/selftests/bpf/test_bpftool_map.sh | 36 +++++++++++++++++++ 2 files changed, 53 insertions(+), 4 deletions(-) -- 2.50.1

16 hours, 47 minutes

2
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[PATCH 0/6] KVM: LoongArch: selftests: Add timer test case

by Bibo Mao

This patch set adds timer test case for LoongArch system, it is based on common arch_timer test case. And it includes time counter function, one-shot/period mode interrupt, and software emulated timer function test. Bibo Mao (6): KVM: LoongArch: selftests: Add system registers save and restore on exception KVM: LoongArch: selftests: Add exception handler register interface KVM: LoongArch: selftests: Add basic interfaces KVM: LoongArch: selftests: Add timer test case with one-shot mode KVM: LoongArch: selftests: Add period mode timer and time counter test KVM: LoongArch: selftests: Add SW emulated timer test tools/testing/selftests/kvm/Makefile.kvm | 10 +- .../kvm/include/loongarch/arch_timer.h | 84 ++++++++ .../kvm/include/loongarch/processor.h | 81 +++++++- .../selftests/kvm/lib/loongarch/exception.S | 6 + .../selftests/kvm/lib/loongarch/processor.c | 38 +++- .../selftests/kvm/loongarch/arch_timer.c | 187 ++++++++++++++++++ 6 files changed, 400 insertions(+), 6 deletions(-) create mode 100644 tools/testing/selftests/kvm/include/loongarch/arch_timer.h create mode 100644 tools/testing/selftests/kvm/loongarch/arch_timer.c base-commit: e53642b87a4f4b03a8d7e5f8507fc3cd0c595ea6 -- 2.39.3

18 hours, 52 minutes

1
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[GIT PULL] kselftest fixes update for Linux 6.18-rc4

by Shuah Khan

Hi Linus, Please pull the following kselftest fixes update for Linux 6.18-rc4. Fixes build warning in cachestat found during clang build and adds tmpshmcstat to .gitignore. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 3a8660878839faadb4f1a6dd72c3179c1df56787: Linux 6.18-rc1 (2025-10-12 13:42:36 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-fixes-6.18-rc4 for you to fetch changes up to 920aa3a7705a061cb3004572d8b7932b54463dbf: selftests: cachestat: Fix warning on declaration under label (2025-10-22 09:23:18 -0600) ---------------------------------------------------------------- linux_kselftest-fixes-6.18-rc4 Fixes build warning in cachestat found during clang build and adds tmpshmcstat to .gitignore. ---------------------------------------------------------------- Madhur Kumar (1): selftests/cachestat: add tmpshmcstat file to .gitignore Sidharth Seela (1): selftests: cachestat: Fix warning on declaration under label tools/testing/selftests/cachestat/.gitignore | 1 + tools/testing/selftests/cachestat/test_cachestat.c | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) ----------------------------------------------------------------

19 hours, 17 minutes

2
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[GIT PULL] kunit fixes update for Linux 6.18-rc4

by Shuah Khan

Hi Linus, Please pull the following kunit fixes update for Linux 6.18-rc4. Fixes log overwrite in param_tests and fixes incorrect cast of priv pointer in test_dev_action(). Updates email address for Rae Moar in MAINTAINERS KUnit entry. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 3a8660878839faadb4f1a6dd72c3179c1df56787: Linux 6.18-rc1 (2025-10-12 13:42:36 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-kunit-fixes-6.18-rc4 for you to fetch changes up to f3903ec76ae6afcdba0347681d1dda005fb145cd: MAINTAINERS: Update KUnit email address for Rae Moar (2025-10-29 14:57:54 -0600) ---------------------------------------------------------------- linux_kselftest-kunit-fixes-6.18-rc4 Fixes log overwrite in param_tests and fixes incorrect cast of priv pointer in test_dev_action(). Updates email address for Rae Moar in MAINTAINERS KUnit entry. ---------------------------------------------------------------- Carlos Llamas (1): kunit: prevent log overwrite in param_tests Florian Schmaus (1): kunit: test_dev_action: Correctly cast 'priv' pointer to long* Rae Moar (1): MAINTAINERS: Update KUnit email address for Rae Moar .mailmap | 1 + MAINTAINERS | 2 +- lib/kunit/kunit-test.c | 2 +- lib/kunit/test.c | 3 ++- 4 files changed, 5 insertions(+), 3 deletions(-) ----------------------------------------------------------------

19 hours, 17 minutes

2
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[PATCH bpf 0/2] use rqspinlock for bpf lru map

by Menglong Dong

Convert the raw_spinlock to rqspinlock to fix the possible deadlock in [1] for bpf lru map. Meanwhile, add the testcase for the deadlock. Link: https://lore.kernel.org/bpf/CAEf4BzbTJCUx0D=zjx6+5m5iiGhwLzaP94hnw36ZMDHAf4… Menglong Dong (2): bpf: use rqspinlock for lru map selftests/bpf: test map deadlock caused by NMI kernel/bpf/bpf_lru_list.c | 47 +++--- kernel/bpf/bpf_lru_list.h | 5 +- .../selftests/bpf/prog_tests/map_deadlock.c | 134 ++++++++++++++++++ .../selftests/bpf/progs/map_deadlock.c | 52 +++++++ 4 files changed, 217 insertions(+), 21 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/map_deadlock.c create mode 100644 tools/testing/selftests/bpf/progs/map_deadlock.c -- 2.51.2

19 hours, 57 minutes

3
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