linux-kernel - Re: [syzbot] [netfs?] kernel BUG in iov_iter

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Message-ID: <674b24b3.050a0220.253251.00dd.GAE@google.com>
Date: Sat, 30 Nov 2024 06:44:03 -0800
From: syzbot <syzbot+404b4b745080b6210c6c@...kaller.appspotmail.com>
To: dhowells@...hat.com, dmantipov@...dex.ru, jlayton@...nel.org, 
	joannelkoong@...il.com, josef@...icpanda.com, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org, miklos@...redi.hu, 
	mszeredi@...hat.com, netfs@...ts.linux.dev, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [netfs?] kernel BUG in iov_iter_revert (2)

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=13e29f78580000
start commit:   f486c8aa16b8 Add linux-next specific files for 20241128
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=10129f78580000
console output: https://syzkaller.appspot.com/x/log.txt?x=17e29f78580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e348a4873516af92
dashboard link: https://syzkaller.appspot.com/bug?extid=404b4b745080b6210c6c
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=131f71e8580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12bc200f980000

Reported-by: syzbot+404b4b745080b6210c6c@...kaller.appspotmail.com
Fixes: 3b97c3652d91 ("fuse: convert direct io to use folios")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection