Re: [PATCH v2] mm/page_alloc: fix potential deadlock on zonelist_update_seq seqlock

Andrew Morton
2023-04-04T21:25:34Z

On Tue, 4 Apr 2023 23:31:58 +0900 Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> wrote:

> syzbot is reporting circular locking dependency which involves
> zonelist_update_seq seqlock [1], for this lock is checked by memory
> allocation requests which do not need to be retried.

I queued this, along with a note that an updated changelog is likely.

Do we feel that a -stable backport is warranted? I think so, from your
earlier comments. Please add the cc:stable to the changelog in this
situation.