syzbot has bisected this issue to:
commit 4e8ddd7f1758ca4ddd0c1f7cf3e66fce736241d2
Author: Vlad Buslov <vla...@mellanox.com>
Date: Thu Jul 5 14:24:30 2018 +0000
net: sched: don't release reference on action overwrite
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14ae08e9900000
start commit: 1996cf46 net: bcmgenet: fix mask check in bcmgenet_validat..
git tree: net
final oops: https://syzkaller.appspot.com/x/report.txt?x=16ae08e9900000
console output: https://syzkaller.appspot.com/x/log.txt?x=12ae08e9900000
kernel config: https://syzkaller.appspot.com/x/.config?x=a0437fdd630bee11
dashboard link: https://syzkaller.appspot.com/bug?extid=80e32b5d1f9923f8ace6
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=161678e1900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14f826d1900000
Reported-by: syzbot+80e32b5d1f9923f8a...@syzkaller.appspotmail.com
Fixes: 4e8ddd7f1758 ("net: sched: don't release reference on action overwrite")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
