[PATCH 0/1] selftest/mm/hugetlb: SIGBUS on stolen page

[Breno Leitao <leitao@xxxxxxxxxx>]

This test case triggers a race between madvise(MADV_DONTNEED) and
mmap() in a single huge page, which got stolen (while reserved).

Once the only page is stolen, the memory previously mmaped (and
madvise(MADV_DONTNEED) got a SIGBUS when accessed.

I am not adding this test to the un_vmtests.sh scripts, since this test
fails at upstream.

Breno Leitao (1):
  selftests/mm: add a new test for madv and hugetlb mmap

 tools/testing/selftests/mm/.gitignore         |   1 +
 tools/testing/selftests/mm/Makefile           |   1 +
 .../selftests/mm/hugetlb_madv_vs_map.c        | 124 ++++++++++++++++++
 3 files changed, 126 insertions(+)
 create mode 100644 tools/testing/selftests/mm/hugetlb_madv_vs_map.c

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2.34.1