linux-kernel - Re: [syzbot] [reiserfs?] general protection fault in __hrtimer_run

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Date: Wed, 10 Jan 2024 11:23:15 +0100
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+f13a9546e229c1a6e378@...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,
	tglx@...utronix.de
Subject: Re: [syzbot] [reiserfs?] general protection fault in
 __hrtimer_run_queues (3)

On Tue 09-01-24 20:52:03, 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=1730f285e80000
> start commit:   e8f75c0270d9 Merge tag 'x86_sgx_for_v6.5' of git://git.ker..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a98ec7f738e43bd4
> dashboard link: https://syzkaller.appspot.com/bug?extid=f13a9546e229c1a6e378
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1227af7b280000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13803daf280000
> 
> If the result looks correct, please mark the issue as fixed by replying with:

Quite likely since that commit stops syzbot from corrupting filesystem
while it is mounted.

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

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