linux-stable.git/tools/testing/selftests/rseq, branch master

Merge tag 'locking-futex-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-18T22:26:35+00:00

Pull futex updates from Thomas Gleixner:

 - Improvements to various futex self tests:

    - Conversion to the selftest harness

    - Provide and use thread creation and synchronization helpers to
      reduce the dependency on delays, which tend to fail on loaded test
      systems

    - New tests for validating owner exit scenarios for robust and PI
      futexes

    - Runtime detect supported features and skip the tests if the kernel
      has no support

 - A few minor fixes

* tag 'locking-futex-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/futex: Give circular-list nodes static storage
  selftests/futex: Use thread synchronization helpers instead of usleep()
  selftests/futex: Provide thread creation and synchronization helpers
  selftests/futex: Dynamically skip unsupported tests
  selftests/futex: Add FUTEX_LOCK_PI owner-exiting coverage
  selftests/futex: Migrate robust_list to harness
  selftests/futex: Migrate futex_priv_hash to harness
  selftests/futex: Migrate futex_numa_mpol to harness
  selftests/futex: Migrate futex_requeue_pi_signal_restart to harness
  selftests/futex: Migrate futex_requeue_pi_mismatched_ops to harness
  selftests/futex: Migrate futex_requeue_pi to harness
  selftests/futex: Migrate futex_requeue to harness
  selftests/futex: Migrate futex_wait_uninitialized_heap to harness
  selftests/futex: Migrate futex_wait_private_mapped_file to harness
  selftests/futex: Migrate futex_wait to harness
  selftests/futex: Correct validation logic in waitv
  selftests/futex: Migrate functional tests to harness
  selftests/futex: Remove static keyword from 'head'
  futex: Remove unnecessary NULL check before kvfree()
  selftests/rseq: Replace glibc-specific __GNUC_PREREQ with portable check

Merge tag 'core-rseq-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-08-18T22:16:10+00:00

Pull rseq updates from Thomas Gleixner:
 "Two trivial updates for RSEQ:

   - Add the recently added new test binaries to .gitignore

   - Fix a trivial typo in a comment"

* tag 'core-rseq-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/rseq: Add missing test binaries to .gitignore
  selftests/rseq: Fix spelling of accommodate

selftests/rseq: Add missing test binaries to .gitignore

2026-07-20T18:43:30+00:00

legacy_check and check_optimized are built by this Makefile via
TEST_GEN_PROGS_EXTENDED but are not listed in .gitignore, causing them
to show up as untracked files after a build.

Signed-off-by: Cihan Karadag 
Signed-off-by: Thomas Gleixner 
Link: https://patch.msgid.link/20260705215346.1132764-1-cihan.cihan@gmail.com

selftests/rseq: Fix a building error for riscv arch

2026-07-08T16:59:14+00:00

RISC-V rseq selftests include asm/fence.h from tools/arch/riscv,
but the rseq Makefile only adds tools/include in the CFLAGS, this
results in the building failure both for native and cross build:

    In file included from rseq.h:131,
                     from rseq.c:37:
    rseq-riscv.h:11:10: fatal error: asm/fence.h: No such file or directory

To fix it, add the matching tools/arch/$(ARCH)/include path in the
CFLAGS and derive ARCH from SUBARCH for standalone native builds where
ARCH is not set.

Fixes: c92786e179e0 ("KVM: riscv: selftests: Use the existing RISCV_FENCE macro in `rseq-riscv.h`")
Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang 
Link: https://patch.msgid.link/20260707082348.36896-1-hui.wang@canonical.com
Signed-off-by: Paul Walmsley

selftests/rseq: Fix spelling of accommodate

2026-07-05T20:13:53+00:00

It's spelled with two 'm'.

Signed-off-by: Ding Junlin <1746193727@qq.com>
Signed-off-by: Thomas Gleixner 
Reviewed-by: Paul E. McKenney 
Link: https://patch.msgid.link/tencent_BAB26179A92C5CE28657C0451540E6EE4B05@qq.com

selftests/rseq: Replace glibc-specific __GNUC_PREREQ with portable check

2026-07-02T22:15:01+00:00

Building the rseq selftests against musl libc fails because musl's
 does not provide the glibc-specific __GNUC_PREREQ macro:

  error: missing binary operator before token '('

Replace __GNUC_PREREQ(11, 1) with an equivalent check using __GNUC__
and __GNUC_MINOR__ directly.  This pattern is portable across all C
library implementations and is already used elsewhere in the tools/
tree (e.g., tools/include/linux/string.h).

This also allows removing the #include , which was only
needed for __GNUC_PREREQ.

Fixes: 886ddfba933f ("selftests/rseq: Introduce thread pointer getters")
Signed-off-by: Hisam Mehboob 
Signed-off-by: Thomas Gleixner 
Link: https://patch.msgid.link/20260618193724.589113-2-hisamshar@gmail.com

selftests/rseq: Add config fragment

2026-06-02T21:20:57+00:00

Currently there is no config fragment for the rseq selftests but there are
a couple of configuration options which are required for running them:

 - CONFIG_RSEQ is required for obvious reasons, it is enabled by default
   but it doesn't hurt to specify it in case the user is usinsg a
   defconfig that disables it.

 - CONFIG_RSEQ_SLICE_EXTENSION is tested by the slice_test test, the
   test will fail without it.

Add a configuration fragment which enables these options, helping encourage
CI systems and people doing manual testing to run the tests with all the
features. This also requires CONFIG_EXPERT since it is a dependency for
slice extension.

Signed-off-by: Mark Brown 
Signed-off-by: Thomas Gleixner 
Link: https://patch.msgid.link/20260424-selftests-rseq-config-fragment-v2-1-a9475996edcb@kernel.org

selftests/rseq: Expand for optimized RSEQ ABI v2

2026-05-06T15:41:08+00:00

Update the selftests so they are executed for legacy (32 bytes RSEQ region)
and optimized RSEQ ABI v2 mode.

Fixes: d6200245c75e ("rseq: Allow registering RSEQ with slice extension")
Signed-off-by: Thomas Gleixner 
Signed-off-by: Peter Zijlstra (Intel) 
Reviewed-by: Dmitry Vyukov 
Tested-by: Dmitry Vyukov 
Link: https://patch.msgid.link/20260428224428.009121296%40kernel.org
Cc: stable@vger.kernel.org

selftests/rseq: Validate legacy behavior

2026-05-06T15:39:01+00:00

The RSEQ legacy mode behavior requires that the ID fields in the rseq
region are unconditionally updated on every context switch and before
signal delivery even if not required by the ABI specification.

To ensure that this behavior is preserved for legacy users in the future,
add a test which validates that with a sleep() and a signal sent to self.

Provide a run script which prevents GLIBC from registering a RSEQ region,
so that the test can register it's own legacy sized region.

Fixes: 566d8015f7ee ("rseq: Avoid CPU/MM CID updates when no event pending")
Signed-off-by: Thomas Gleixner 
Signed-off-by: Peter Zijlstra (Intel) 
Reviewed-by: Dmitry Vyukov 
Tested-by: Dmitry Vyukov 
Link: https://patch.msgid.link/20260428224427.764705536%40kernel.org
Cc: stable@vger.kernel.org

selftests/rseq: Make registration flexible for legacy and optimized mode

2026-05-05T14:03:11+00:00

rseq_register_current_thread() either uses the glibc registered RSEQ region
or registers it's own region with the legacy size of 32 bytes.

That worked so far, but becomes a problem when the kernel implements a
distinction between legacy and performance optimized behavior based on the
registration size as that does not allow to test both modes with the self
test suite.

Add two arguments to the function. One to enforce that the registration is
not using libc provided mode and one to tell the registration to use the
legacy size and not the kernel advertised size.

Rename it and make the original one a inline wrapper which preserves the
existing behavior.

Fixes: 566d8015f7ee ("rseq: Avoid CPU/MM CID updates when no event pending")
Signed-off-by: Thomas Gleixner 
Signed-off-by: Peter Zijlstra (Intel) 
Reviewed-by: Dmitry Vyukov 
Tested-by: Dmitry Vyukov 
Link: https://patch.msgid.link/20260428224427.677889423%40kernel.org
Cc: stable@vger.kernel.org