selftests/futex: Create test for robust list

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Create a test for the robust list mechanism. Test the following uAPI
operations:

- Creating a robust mutex where the lock waiter is wake by the kernel
  when the lock owner died
- Setting a robust list to the current task
- Getting a robust list from the current task
- Getting a robust list from another task
- Using the list_op_pending field from robust_list_head struct to test
  robustness when the lock owner dies before completing the locking
- Setting a invalid size for syscall argument `len`
- Adding multiple elements to a robust list wait waiting for each of
  them
- Creating a circular list and checking that the kernel does not get
  stuck in an infinity loop

Signed-off-by: André Almeida <andrealmeid@igalia.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://patch.msgid.link/20251110224130.3044761-1-andrealmeid@igalia.com

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André Almeida 2025-11-10 19:41:30 -03:00 • committed by Thomas Gleixner

parent 275498b881

commit cd91b502f1

3 changed files with 555 additions and 1 deletions

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1

tools/testing/selftests/futex/functional/.gitignore vendored

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3

tools/testing/selftests/futex/functional/Makefile

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552

tools/testing/selftests/futex/functional/robust_list.c

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