Re: [syzbot] [ocfs2?] possible deadlock in ocfs2_page_mkwrite

[syzbot]

syzbot has bisected this issue to:

commit a3c06ae158dd6fa8336157c31d9234689d068d02
Author: Parav Pandit <parav@xxxxxxxxxx>
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=10fff130580000
start commit:   b5a24181e461 Merge tag 'trace-ringbuffer-v6.12-rc7-2' of g..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=12fff130580000
console output: https://syzkaller.appspot.com/x/log.txt?x=14fff130580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1503500c6f615d24
dashboard link: https://syzkaller.appspot.com/bug?extid=2e6495950edcf7fbfccf
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17f252e8580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12ecd2c0580000

Reported-by: syzbot+2e6495950edcf7fbfccf@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: a3c06ae158dd ("vdpa_sim_net: Add support for user supported devices")

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