Re: [PATCH v4 2/2] selftests/mm: add tests for UFFDIO_MOVE of a uffd-protected swap entry

[David Hildenbrand (Arm)]

On 10/3/26 12:30, Donggeun Yoo wrote:
> Move a swapped-out page out of a write-protected or RWP-protected area into
> a destination registered for missing faults only, and read pagemap bit 57
> at the destination.  The destination was never protected, so the bit must
> be clear.
> 
> Assisted-by: LLM
> Signed-off-by: Donggeun Yoo <donggeunyoo.kernel@xxxxxxxxx>
> ---
>  tools/testing/selftests/mm/uffd-unit-tests.c | 84 ++++++++++++++++++++

The CI complains as reply to this patch:
...
Running userfaultfd(2) test
✗ userfaultfd(2) tests failed
Running VMA merge test
# # Totals: pass:27 fail:0 xfail:0 xpass:0 skip:0 error:0
# SUMMARY: PASS=1 SKIP=0 FAIL=0
✓ VMA merge tests passed
Running vmalloc test
# SUMMARY: PASS=1 SKIP=0 FAIL=0
✓ vmalloc tests passed
==========================================
✗ userfaultfd(2) test failed:
# not ok 43 minor-collapse on shmem
------------------------------------------

Didn't look into the details / trying to reproduce.

-- 
Cheers,

David