Re: [syzbot] [xfs?] WARNING in xfs_bmapi_convert_delalloc

[Jan Kara]

On Thu 08-02-24 08:17:24, Dave Chinner wrote:
> 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@xxxxxxx>
> > 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...

I was also confused by this. Somehow this commit makes the reproducer stop
working but I have no idea how that's possible.

								Honza
-- 
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR