linux-kernel - Re: [syzbot] BUG: Bad rss-counter state (5)

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Date: Fri, 14 Jun 2024 23:49:05 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: syzbot <syzbot+f2bbbb592debc978d46d@...kaller.appspotmail.com>,
 akpm@...ux-foundation.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
 syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] BUG: Bad rss-counter state (5)



On 2024/6/14 23:12, syzbot wrote:
> syzbot has bisected this issue to:
> 
> commit 1c05047ad01693ad92bdf8347fad3b5c2b25e8bb
> Author: Baolin Wang <baolin.wang@...ux.alibaba.com>
> Date:   Tue Jun 4 10:17:45 2024 +0000
> 
>      mm: memory: extend finish_fault() to support large folio
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=106e8e56980000
> start commit:   d35b2284e966 Add linux-next specific files for 20240607
> git tree:       linux-next
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=126e8e56980000
> console output: https://syzkaller.appspot.com/x/log.txt?x=146e8e56980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d8bf5cd6bcca7343
> dashboard link: https://syzkaller.appspot.com/bug?extid=f2bbbb592debc978d46d
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17f57a36980000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10a57696980000
> 
> Reported-by: syzbot+f2bbbb592debc978d46d@...kaller.appspotmail.com
> Fixes: 1c05047ad016 ("mm: memory: extend finish_fault() to support large folio")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Thanks. Please try the fix in mm-unstable branch

#syz test: 
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?h=mm-unstable&id=4135d2688b42f097f78062ef328f3056db32e3a0