linux-kernel - Re: [syzbot] [reiserfs?] BUG: unable to handle kernel NULL pointer dereference in reiserfs_find

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Date: Wed, 31 Jan 2024 18:18:45 +0100
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+4654552e088ed458b10d@...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?] BUG: unable to handle kernel NULL pointer
 dereference in reiserfs_find_entry

On Wed 31-01-24 08:52:05, 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=17e6fb5be80000
> start commit:   51f269a6ecc7 Merge tag 'probes-fixes-6.4-rc4' of git://git..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=162cf2103e4a7453
> dashboard link: https://syzkaller.appspot.com/bug?extid=4654552e088ed458b10d
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1177c895280000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17f4b2a5280000
> 
> 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