Re: [syzbot] [ext4?] WARNING in lock_two_nondirectories

Jan Kara
2024-02-12T13:28:54Z

On Sun 11-02-24 16:00:04, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
>
> commit 6f861765464f43a71462d52026fbddfc858239a5
> Author: Jan Kara <jack@suse.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=15477434180000
> start commit: a39b6ac3781d Linux 6.7-rc5
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=e043d554f0a5f852
> dashboard link: https://syzkaller.appspot.com/bug?extid=2c4a3b922a860084cc7f
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1687292ee80000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d8adbce80000
>
> If the result looks correct, please mark the issue as fixed by replying with:

Another repro that seems to be corrupting the fs metadata:

#syz fix: fs: Block writes to mounted block devices

Honza
--
Jan Kara <jack@suse.com>
SUSE Labs, CR