linux-kernel - Re: [syzbot] [reiserfs?] KASAN: use-after-free Read in set_de_name_and

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Date: Wed, 7 Feb 2024 18:02:44 +0100
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+3969ffae9388a369bab8@...kaller.appspotmail.com>
Cc: axboe@...nel.dk, brauner@...nel.org, jack@...e.cz,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	reiserfs-devel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [reiserfs?] KASAN: use-after-free Read in
 set_de_name_and_namelen

On Wed 07-02-24 03:09:03, 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=14fffd6c180000
> start commit:   c3eb11fbb826 Merge tag 'pci-v6.1-fixes-3' of git://git.ker..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8d01b6e3197974dd
> dashboard link: https://syzkaller.appspot.com/bug?extid=3969ffae9388a369bab8
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1615d7e5880000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15f20981880000
> 
> If the result looks correct, please mark the issue as fixed by replying with:

Makes sense.
 
#syz fix: fs: Block writes to mounted block devices

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