linux-kernel - Re: [syzbot] [reiserfs?] BUG: unable to handle kernel paging request in reiserfs_readdir

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Message-ID: <20240215132119.gtxttrj3jsft2hwe@quack3>
Date: Thu, 15 Feb 2024 14:21:19 +0100
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+3f6ef04b7cf85153b528@...kaller.appspotmail.com>
Cc: axboe@...nel.dk, brauner@...nel.org, jack@...e.cz,
	jfs-discussion@...ts.sourceforge.net, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, reiserfs-devel@...r.kernel.org,
	shaggy@...nel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [reiserfs?] BUG: unable to handle kernel paging request
 in reiserfs_readdir_inode

On Thu 15-02-24 04:38:04, 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=14ffd320180000
> start commit:   534293368afa Merge tag 'kbuild-fixes-v6.3' of git://git.ke..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9688428cfef5e8d5
> dashboard link: https://syzkaller.appspot.com/bug?extid=3f6ef04b7cf85153b528
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=138d82bac80000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1123fed2c80000
> 
> If the result looks correct, please mark the issue as fixed by replying with:

Frankly I don't see the reproducer doing anything suspicious but since we
have no reproducer and this is reiserfs:

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

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