[PATCH v3 0/5] Increase mseal test coverage

[jeffxu@chromium.org]

From: Jeff Xu <jeffxu@chromium.org>

This series increase the test coverage of mseal_test by:

Add check for vma_size, prot, and error code for existing tests.
Add more testcases for madvise, munmap, mmap and mremap to cover
sealing in different scenarios.

The increase test coverage hopefully help to prevent future regression.
It doesn't change any existing mm api's semantics, i.e. it will pass on
linux main and 6.10 branch.

Note: in order to pass this test in mm-unstable, mm-unstable must have
Liam's fix on mmap [1]

[1] https://lore.kernel.org/linux-kselftest/vyllxuh5xbqmaoyl2mselebij5ox7cseekjcvl5gmzoxxwd2he@hxi4mpjanxzt/#t

History:
V3:
- no-functional change, incooperate feedback from Pedro Falcato

V2:
- https://lore.kernel.org/linux-kselftest/20240829214352.963001-1-jeffxu@chromium.org/
- remove the mmap fix (Liam R. Howlett will fix it separately)
- Add cover letter (Lorenzo Stoakes)
- split the testcase for ease of review (Mark Brown)

V1:
- https://lore.kernel.org/linux-kselftest/20240828225522.684774-1-jeffxu@chromium.org/


Jeff Xu (5):
  selftests/mseal_test: Check vma_size, prot, error code.
  selftests/mseal: add sealed madvise type
  selftests/mseal: munmap across multiple vma ranges.
  selftests/mseal: add more tests for mmap
  selftests/mseal: add more tests for mremap

 tools/testing/selftests/mm/mseal_test.c | 830 ++++++++++++++++++++++--
 1 file changed, 763 insertions(+), 67 deletions(-)

-- 
2.46.0.469.g59c65b2a67-goog