uffd-wp-mremap and mremap_test never print the TAP header (and mremap_test skips with a bare exit(KSFT_SKIP) rather than a KTAP skip), so their output is not valid KTAP; hugetlb-soft-offline toggles enable_soft_offline during the run and leaves it disabled afterwards.
Tested on x86_64. Song Hu (3): selftests/mm: emit TAP header in uffd-wp-mremap selftests/mm: emit TAP header and use TAP skip in mremap_test selftests/mm: restore enable_soft_offline in hugetlb-soft-offline .../selftests/mm/hugetlb-soft-offline.c | 35 ++++++---------- tools/testing/selftests/mm/mremap_test.c | 41 +++++++++++-------- tools/testing/selftests/mm/uffd-wp-mremap.c | 2 + 3 files changed, 37 insertions(+), 41 deletions(-) --- Changes in v2, per review feedback from Mike Rapoport, Sarthak Sharma and the Sashiko AI review Andrew Morton pointed at: - mremap_test: save errno before fclose() in get_mmap_min_addr() so strerror() reports the actual failure, and split the ksft_*() messages embedding "\n\t" so continuation lines get the "# " prefix. - hugetlb-soft-offline: restore enable_soft_offline from an atexit() handler so it also runs on early exits, and use read_num()/write_num() from vm_util instead of the hand-rolled helpers. v1: https://lore.kernel.org/all/[email protected]/ -- 2.43.0
