Re: [syzbot] [ocfs2?] possible deadlock in ocfs2_reserve_suballoc_bits

[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=1047cc30580000
start commit:   c2ee9f594da8 KVM: selftests: Fix build on on non-x86 archi..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1247cc30580000
console output: https://syzkaller.appspot.com/x/log.txt?x=1447cc30580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=fc6f8ce8c5369043
dashboard link: https://syzkaller.appspot.com/bug?extid=5d516fba7bc3c966c9a9
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15e0b640580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=107248a7980000

Reported-by: syzbot+5d516fba7bc3c966c9a9@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: a3c06ae158dd ("vdpa_sim_net: Add support for user supported devices")

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