linux-kernel - Re: WARNING in close_fs

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Message-ID: <000000000000d324e605b541b602@google.com>
Date:   Sun, 29 Nov 2020 08:52:08 -0800
From:   syzbot <syzbot+a70e2ad0879f160b9217@...kaller.appspotmail.com>
To:     clm@...com, dsterba@...e.com, josef@...icpanda.com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        mingo@...nel.org, mingo@...hat.com, peterz@...radead.org,
        rostedt@...dmis.org, syzkaller-bugs@...glegroups.com,
        will@...nel.org
Subject: Re: WARNING in close_fs_devices (3)

syzbot has bisected this issue to:

commit 4d004099a668c41522242aa146a38cc4eb59cb1e
Author: Peter Zijlstra <peterz@...radead.org>
Date:   Fri Oct 2 09:04:21 2020 +0000

    lockdep: Fix lockdep recursion

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=178c99fd500000
start commit:   6174f052 Add linux-next specific files for 20201127
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=144c99fd500000
console output: https://syzkaller.appspot.com/x/log.txt?x=104c99fd500000
kernel config:  https://syzkaller.appspot.com/x/.config?x=79c69cf2521bef9c
dashboard link: https://syzkaller.appspot.com/bug?extid=a70e2ad0879f160b9217
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11727795500000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1793dcc9500000

Reported-by: syzbot+a70e2ad0879f160b9217@...kaller.appspotmail.com
Fixes: 4d004099a668 ("lockdep: Fix lockdep recursion")

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