linux-kernel - Re: [syzbot] [ocfs2?] possible deadlock in ocfs2_try_remove_refcount

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Message-ID: <66f1e5d2.050a0220.3eed3.001a.GAE@google.com>
Date: Mon, 23 Sep 2024 15:04:02 -0700
From: syzbot <syzbot+1fed2de07d8e11a3ec1b@...kaller.appspotmail.com>
To: djahchankoike@...il.com, eadavis@...com, elic@...dia.com, 
	jasowang@...hat.com, jlbec@...lplan.org, joseph.qi@...ux.alibaba.com, 
	linux-kernel@...r.kernel.org, mark@...heh.com, mst@...hat.com, 
	ocfs2-devel@...ts.linux.dev, ocfs2-devel@....oracle.com, parav@...dia.com, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ocfs2?] possible deadlock in ocfs2_try_remove_refcount_tree

syzbot has bisected this issue to:

commit a3c06ae158dd6fa8336157c31d9234689d068d02
Author: Parav Pandit <parav@...dia.com>
Date:   Tue Jan 5 10:32:03 2021 +0000

    vdpa_sim_net: Add support for user supported devices

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11f6ca27980000
start commit:   de5cb0dcb74c Merge branch 'address-masking'
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=13f6ca27980000
console output: https://syzkaller.appspot.com/x/log.txt?x=15f6ca27980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=74ffdb3b3fad1a43
dashboard link: https://syzkaller.appspot.com/bug?extid=1fed2de07d8e11a3ec1b
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12f23880580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15851c27980000

Reported-by: syzbot+1fed2de07d8e11a3ec1b@...kaller.appspotmail.com
Fixes: a3c06ae158dd ("vdpa_sim_net: Add support for user supported devices")

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