linux-kernel - Re: [PATCH] mm,page

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Message-ID: <37cb2e7c-97f1-4179-a715-84cc02096083@I-love.SAKURA.ne.jp>
Date: Tue, 19 Mar 2024 19:51:59 +0900
From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To: Oscar Salvador <osalvador@...e.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Lei Yang <leiyang@...hat.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Michal Hocko <mhocko@...e.com>, Vlastimil Babka <vbabka@...e.cz>,
        Marco Elver <elver@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Alexander Potapenko <glider@...gle.com>
Subject: Re: [PATCH] mm,page_owner: Fix recursion

On 2024/03/14 16:01, Oscar Salvador wrote:
> On Thu, Mar 14, 2024 at 06:47:43AM +0100, Oscar Salvador wrote:
>> On Thu, Mar 14, 2024 at 12:01:24PM +0900, Tetsuo Handa wrote:
>>> Maybe culprit for a page owner refcount bug reported at
>>> https://syzkaller.appspot.com/bug?id=8e4e66dfe299a2a00204ad220c641daaf1486a00 , for
>>> that commit went to next-20240214 and syzbot started failing to test since next-20240215 ?
>>>
>>> Please send this patch to linux-next.git as soon as possible (or can someone experiencing
>>> this bug try booting linux-next.git with this patch applied, so that we can check whether
>>> syzbot can resume testing linux-next.git), and then send to linux.git together (so that
>>> various trees which depend on linux.git won't start failing to boot).
>>
>> No, that is something else that I already started fixing a few days ago.
>> I think I will have the fix ready today.
> 
> I already have the fix. I will do some more testing and then I will send
> it out.

OK. Please test your patch using
https://syzkaller.appspot.com/bug?extid=98c1a1753a0731df2dd4 .