Re: [PATCH] mm/vma: restore VMA iterator on full-range merge failure

[sashiko-bot@kernel.org]

Thank you for your contribution! Sashiko AI review found 1 potential
issue to consider:
- [Low] mm/vma: duplicated subject line in commit message body
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commit 53321f02a2e2d093a67d34a87521909e373ff074
Author: Shao Mingyin <shao.mingyin@zte.com.cn>

> mm/vma: restore VMA iterator on full-range merge failure
>
> mm/vma: restore VMA iterator on full-range merge failure
>
> vma_merge_existing_range() moves the iterator to the previous VMA when
> merging to the left. If the range spans the whole middle VMA and a
> vm_ops->close() hook prevents removing it, the function returns without
> restoring the iterator.
>
> An mprotect() walk can then visit the middle VMA again. Restore the
> iterator to the range start, as the abort path already does. Extend the
> existing close-hook merge test to check the iterator after this failure.
> No crash or data corruption has been observed in this case.
>
> Fixes: 01c373e9a5ce2 ("mm: rework vm_ops->close() handling on VMA merge")
> Signed-off-by: Shao Mingyin <shao.mingyin@zte.com.cn>

[Severity: Low]
This isn't a bug, but the commit subject line is repeated at the start of
the commit message body.

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Sashiko AI review · https://sashiko.dev/#/patchset/20261115004655564ix3vefI54RZ3HhYOmxuKX@zte.com.cn?part=1