Re: [PATCH] mm: page_alloc: validate buddy before check its migratetype.

Linus Torvalds
2022-03-30T23:04:15Z

On Wed, Mar 30, 2022 at 3:12 PM Zi Yan <zi.yan@sent.com> wrote:
>
> Fixes: 1dd214b8f21c ("mm: page_alloc: avoid merging non-fallbackable pageblocks with others")

Oh, btw - should this perhaps be backported further back than that
alleged "fixes" commit?

It does look like maybe the problem potentially existed before too,
and was just much harder to trigger.

That said, google doesn't find any other reports that look like
Steven's oops, so maybe it really never happened and backporting isn't
called for.

Or possibly my google-fu is just bad.

Linus