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=1626def1180000
start commit: f6e922365faf xsk: Don't assume metadata is always requeste..
git tree: bpf
final oops: https://syzkaller.appspot.com/x/report.txt?x=1526def1180000
console output: https://syzkaller.appspot.com/x/log.txt?x=1126def1180000
kernel config: https://syzkaller.appspot.com/x/.config?x=6fb1be60a193d440
dashboard link: https://syzkaller.appspot.com/bug?extid=9d95beb2a3c260622518
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14115c6e180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=124fd231180000
Reported-by: syzbot+9d95beb2a3c260622518@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: a3c06ae158dd ("vdpa_sim_net: Add support for user supported devices")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
