linux-ext4 - Re: [syzbot] [apparmor?] [ext4?] general protection fault in common_perm

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Date: Tue, 20 Feb 2024 11:00:52 +0100
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+7d5fa8eb99155f439221@...kaller.appspotmail.com>
Cc: adilger.kernel@...ger.ca, apparmor-owner@...ts.ubuntu.com,
	apparmor@...ts.ubuntu.com, axboe@...nel.dk, brauner@...nel.org,
	jack@...e.cz, jmorris@...ei.org, john.johansen@...onical.com,
	john@...armor.net, linux-ext4@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, paul@...l-moore.com,
	serge@...lyn.com, syzkaller-bugs@...glegroups.com, terrelln@...com,
	tytso@....edu
Subject: Re: [syzbot] [apparmor?] [ext4?] general protection fault in
 common_perm_cond

On Mon 19-02-24 21:39:02, 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=1644f22c180000
> start commit:   b6e6cc1f78c7 Merge tag 'x86_urgent_for_6.5_rc2' of git://g..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=6769a69bd0e144b4
> dashboard link: https://syzkaller.appspot.com/bug?extid=7d5fa8eb99155f439221
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=137b16dca80000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14153b7ca80000
> 
> 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