linux-kernel - Re: [syzbot] [udf?] KASAN: use-after-free Read in udf_finalize

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Message-ID: <20240306170446.ohmpxz3r24t4wry7@quack3>
Date: Wed, 6 Mar 2024 18:04:46 +0100
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+46073c22edd7f242c028@...kaller.appspotmail.com>
Cc: axboe@...nel.dk, brauner@...nel.org, jack@...e.com, jack@...e.cz,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [udf?] KASAN: use-after-free Read in udf_finalize_lvid

On Mon 04-03-24 13:27:02, 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=1495d341180000
> start commit:   861deac3b092 Linux 6.7-rc7
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=e1e118a9228c45d7
> dashboard link: https://syzkaller.appspot.com/bug?extid=46073c22edd7f242c028
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16a44d79e80000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=130b99e9e80000
> 
> If the result looks correct, please mark the issue as fixed by replying with:

Looks good.

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

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