linux-kernel - Re: Known and unfixed active data loss bug in MM + XFS with large folios since Dec 2021 (any kernel from 6.1 upwards)

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Message-Id: <2EC5C349-325C-4EF6-AFF8-0952B7A3D364@flyingcircus.io>
Date: Wed, 25 Sep 2024 18:42:00 +0200
From: Christian Theune <ct@...ingcircus.io>
To: Kairui Song <ryncsn@...il.com>
Cc: Sam James <sam@...too.org>,
 stable@...nel.org,
 clm@...a.com,
 Matthew Wilcox <willy@...radead.org>,
 axboe@...nel.dk,
 Dave Chinner <david@...morbit.com>,
 dqminh@...udflare.com,
 linux-fsdevel@...r.kernel.org,
 linux-kernel@...r.kernel.org,
 linux-mm@...ck.org,
 "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
 regressions@...mhuis.info,
 regressions@...ts.linux.dev,
 torvalds@...ux-foundation.org
Subject: Re: Known and unfixed active data loss bug in MM + XFS with large
 folios since Dec 2021 (any kernel from 6.1 upwards)



> On 25. Sep 2024, at 18:06, Kairui Song <ryncsn@...il.com> wrote:
> 
> On Wed, Sep 25, 2024 at 1:16 AM Sam James <sam@...too.org> wrote:
>> 
>> Kairui, could you send them to the stable ML to be queued if Willy is
>> fine with it?
>> 
> 
> Hi Sam,
> 
> Thanks for adding me to the discussion.
> 
> Yes I'd like to, just not sure if people are still testing and
> checking the commits.

As the one who raised the issue recently: we’re rolling out 6.11 for testing on a couple hundred machines right now. I’ve scheduled this internally to run 8-12 weeks due to the fleeting nature and will report back if it pops up again or after that time has elapsed.

AFAICT this is a fix in any case even if we should find more issues in my fleet later.

Cheers,
Christian

-- 
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