Re: [PATCH v2] mm/migrate: fix softlockup in do_pages_move() with huge page arrays

[David Hildenbrand]

On Sun, 08 Nov 2026 14:28:31 +0800, shao.mingyin@xxxxxxxxxx wrote:
> mm/migrate: fix softlockup in do_pages_move() with huge page arrays
> 
> do_pages_move() walks the array one page at a time.  An entry naming the
> node its page is already on is never queued, so the loop runs without a
> voluntary preemption point on a non-preemptible kernel; the existing
> cond_resched() calls in the migration code are only reached after a
> folio has been queued.  nr_pages comes straight from the syscall.
> 
> [...]

Applied, thanks!

tree: mm/core.git
branch: migrate-7.5.misc

Applied patches will appear soon in mm-next, followed by linux-next.

Please report any outstanding bugs that were missed during review, so we
can either drop the patch series or decide how to fix it up.

It is encouraged to provide Acked-bys, Reviewed-bys, and Tested-bys even
though the patches have already been applied. If possible, patch trailers
will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. Further, this is not a guarantee that the
patches will go upstream. If in doubt, please check the listed branch.

[1/1] mm/migrate: fix softlockup in do_pages_move() with huge page arrays
      https://git.kernel.org/mm/core/c/e200153a

-- 
Cheers,

David