linux-kernel - Re: [Resend PATCHv4 1/1] mm: fix incorrect vbq reference in purge_fragmented

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Message-ID: <CAGWkznGnaV8Tz0XrgaVWEVG0ug7dp3w23ygKKmq8SPu_AMBhoA@mail.gmail.com>
Date: Wed, 12 Jun 2024 10:00:14 +0800
From: Zhaoyang Huang <huangzhaoyang@...il.com>
To: Uladzislau Rezki <urezki@...il.com>
Cc: "zhaoyang.huang" <zhaoyang.huang@...soc.com>, Andrew Morton <akpm@...ux-foundation.org>, 
	Christoph Hellwig <hch@...radead.org>, Lorenzo Stoakes <lstoakes@...il.com>, Baoquan He <bhe@...hat.com>, 
	Thomas Gleixner <tglx@...utronix.de>, hailong liu <hailong.liu@...o.com>, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, stable@...r.kernel.org, steve.kang@...soc.com
Subject: Re: [Resend PATCHv4 1/1] mm: fix incorrect vbq reference in purge_fragmented_block

On Wed, Jun 12, 2024 at 2:16 AM Uladzislau Rezki <urezki@...il.com> wrote:
>
> >
> > Sorry to bother you again. Are there any other comments or new patch
> > on this which block some test cases of ANDROID that only accept ACKed
> > one on its tree.
> >
> I have just returned from vacation. Give me some time to review your
> patch. Meanwhile, do you have a reproducer? So i would like to see how
> i can trigger an issue that is in question.
This bug arises from an system wide android test which has been
reported by many vendors. Keep mount/unmount an erofs partition is
supposed to be a simple reproducer. IMO, the logic defect is obvious
enough to be found by code review.
>
> Thanks!
>
> --
> Uladzislau Rezki