Re: BUG: spinlock recursion in release_sock

[syzbot]

syzbot has bisected this bug to:

commit 8822e270d697010e6a4fd42a319dbefc33db91e1
Author: John Hurley <john.hurley@xxxxxxxxxxxxx>
Date:   Sun Jul 7 14:01:54 2019 +0000

    net: core: move push MPLS functionality from OvS to core helper

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13ca5a5c600000
start commit:   9e6dfe80 Add linux-next specific files for 20190724
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=102a5a5c600000
console output: https://syzkaller.appspot.com/x/log.txt?x=17ca5a5c600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6cbb8fc2cf2842d7
dashboard link: https://syzkaller.appspot.com/bug?extid=e67cf584b5e6b35a8ffa
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13680594600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15b34144600000

Reported-by: syzbot+e67cf584b5e6b35a8ffa@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 8822e270d697 ("net: core: move push MPLS functionality from OvS to  
core helper")

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