linux-kernel - Re: [syzbot] [xfs?] WARNING in xfs_bmapi_convert

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Message-ID: <ZcPzZNStEgLX+bAq@dread.disaster.area>
Date: Thu, 8 Feb 2024 08:17:24 +1100
From: Dave Chinner <david@...morbit.com>
To: syzbot <syzbot+53b443b5c64221ee8bad@...kaller.appspotmail.com>
Cc: axboe@...nel.dk, brauner@...nel.org, chandan.babu@...cle.com,
	dchinner@...hat.com, djwong@...nel.org, jack@...e.cz,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-xfs@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [xfs?] WARNING in xfs_bmapi_convert_delalloc

On Tue, Feb 06, 2024 at 10:02:05PM -0800, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit 6f861765464f43a71462d52026fbddfc858239a5
> Author: Jan Kara <jack@...e.cz>
> Date:   Wed Nov 1 17:43:10 2023 +0000
> 
>     fs: Block writes to mounted block devices
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12b0ad7be80000
> start commit:   e8c127b05766 Merge tag 'net-6.6-rc6' of git://git.kernel.o..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=11e478e28144788c
> dashboard link: https://syzkaller.appspot.com/bug?extid=53b443b5c64221ee8bad
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14a6f291680000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=116bc355680000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: fs: Block writes to mounted block devices

For real? The test doesn't even open a mounted block device for
writes...

-Dave.
-- 
Dave Chinner
david@...morbit.com