linux-kernel - Re: [syzbot] [reiserfs?] KASAN: vmalloc-out-of-bounds Read in cleanup_bitmap

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Date: Mon, 12 Feb 2024 13:53:52 +0100
From: Jan Kara <jack@...e.cz>
To: syzbot <syzbot+174ea873dedcd7fb6de3@...kaller.appspotmail.com>
Cc: axboe@...nel.dk, brauner@...nel.org, bvanassche@....org,
	damien.lemoal@...nsource.wdc.com, jack@...e.cz, jlayton@...nel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	neilb@...e.de, reiserfs-devel@...r.kernel.org, song@...nel.org,
	syzkaller-bugs@...glegroups.com, willy@...radead.org,
	yi.zhang@...wei.com
Subject: Re: [syzbot] [reiserfs?] KASAN: vmalloc-out-of-bounds Read in
 cleanup_bitmap_list

On Fri 09-02-24 18:39:03, 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=1257a6ec180000
> start commit:   f5837722ffec Merge tag 'mm-hotfixes-stable-2023-12-27-15-0..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=f8e72bae38c079e4
> dashboard link: https://syzkaller.appspot.com/bug?extid=174ea873dedcd7fb6de3
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14db6ca1e80000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12159e5ee80000
> 
> 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