linux-kernel - Re: [syzbot] [netfs?] KASAN: slab-use-after-free Read in iov_iter

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Message-ID: <CAJfpeguK9Baf4hxBhqS_313bo9Z0ZAGMAAbkaOMQRKTK_auk=w@mail.gmail.com>
Date: Thu, 2 Jan 2025 21:18:04 +0100
From: Miklos Szeredi <miklos@...redi.hu>
To: syzbot <syzbot+2625ce08c2659fb9961a@...kaller.appspotmail.com>
Cc: dhowells@...hat.com, jlayton@...nel.org, joannelkoong@...il.com, 
	josef@...icpanda.com, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, mszeredi@...hat.com, netfs@...ts.linux.dev, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [netfs?] KASAN: slab-use-after-free Read in iov_iter_revert

On Sat, 30 Nov 2024 at 01:21, syzbot
<syzbot+2625ce08c2659fb9961a@...kaller.appspotmail.com> wrote:
>
> syzbot has bisected this issue to:
>
> commit 3b97c3652d9128ab7f8c9b8adec6108611fdb153
> Author: Joanne Koong <joannelkoong@...il.com>
> Date:   Thu Oct 24 17:18:08 2024 +0000
>
>     fuse: convert direct io to use folios
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1033bf5f980000
> start commit:   b86545e02e8c Merge tag 'acpi-6.13-rc1-2' of git://git.kern..
> git tree:       upstream
> final oops:     https://syzkaller.appspot.com/x/report.txt?x=1233bf5f980000
> console output: https://syzkaller.appspot.com/x/log.txt?x=1433bf5f980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=5f0b9d4913852126
> dashboard link: https://syzkaller.appspot.com/bug?extid=2625ce08c2659fb9961a
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14534f78580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10c3d3c0580000
>
> Reported-by: syzbot+2625ce08c2659fb9961a@...kaller.appspotmail.com
> Fixes: 3b97c3652d91 ("fuse: convert direct io to use folios")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz test git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git
7a4f541873734f41f9645ec147cfae72ef3ffd00