[  462.486273] syz-executor.2 (5941) used greatest stack depth: 23216 bytes left
[  462.992812] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  462.999545] batman_adv: batadv0: Removing interface: batadv_slave_0
[  463.007607] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  463.014365] batman_adv: batadv0: Removing interface: batadv_slave_1
[  463.023855] device bridge_slave_1 left promiscuous mode
[  463.029629] bridge0: port 2(bridge_slave_1) entered disabled state
[  463.038723] device bridge_slave_0 left promiscuous mode
[  463.044268] bridge0: port 1(bridge_slave_0) entered disabled state
[  463.055153] device veth1_macvtap left promiscuous mode
[  463.060645] device veth0_macvtap left promiscuous mode
[  463.066013] device veth1_vlan left promiscuous mode
[  463.071534] device veth0_vlan left promiscuous mode
[  463.154344] team0 (unregistering): Port device team_slave_1 removed
[  463.164267] team0 (unregistering): Port device team_slave_0 removed
[  463.176201] bond0 (unregistering): Releasing backup interface bond_slave_1
[  463.189189] bond0 (unregistering): Releasing backup interface bond_slave_0
[  463.230297] bond0 (unregistering): Released all slaves
[  463.458052] ------------[ cut here ]------------
[  463.462941] WARNING: CPU: 1 PID: 24 at net/netfilter/core.c:151 nf_unregister_net_hook+0x345/0x570
[  463.472775] nf_unregister_net_hook: hook not found!
[  463.477782] Kernel panic - not syncing: panic_on_warn set ...
[  463.477782] 
[  463.485135] CPU: 1 PID: 24 Comm: kworker/u4:1 Not tainted 4.9.0-rc1-syzkaller #0
[  463.492648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  463.502028] Workqueue: netns cleanup_net
[  463.506209]  ffff88012b23f750 ffffffff8381b341 1ffffffff11b8802 0000000041b58ab3
[  463.514242]  ffffffff886f8514 ffffffff8381b184 ffff88012b23f710 0000000000000000
[  463.522273]  ffff88012b23f770 ffffffff815abfc6 ffff88012b23f720 ffffffff876387f1
[  463.530281] Call Trace:
[  463.532931]  [<ffffffff8381b341>] dump_stack+0x1bd/0x29c
[  463.538368]  [<ffffffff8381b184>] ? _atomic_dec_and_lock+0xc4/0xc4
[  463.544728]  [<ffffffff815abfc6>] ? console_unlock+0x416/0xc40
[  463.550745]  [<ffffffff876387f1>] ? _raw_spin_unlock_irqrestore+0x71/0xf0
[  463.557661]  [<ffffffff8603ba55>] ? nf_unregister_net_hook+0x345/0x570
[  463.564322]  [<ffffffff817fbc16>] panic+0x1e5/0x44f
[  463.569312]  [<ffffffff817fba31>] ? copy_signal+0xb38/0xb38
[  463.575002]  [<ffffffff815acb52>] ? vprintk_emit+0x362/0x9d0
[  463.580805]  [<ffffffff81413a74>] __warn+0x194/0x1d0
[  463.585888]  [<ffffffff81413b42>] warn_slowpath_fmt+0x92/0xb0
[  463.591763]  [<ffffffff81413ab0>] ? __warn+0x1d0/0x1d0
[  463.597013]  [<ffffffff8603ba55>] nf_unregister_net_hook+0x345/0x570
[  463.603483]  [<ffffffff8603b710>] ? nf_register_net_hook+0x830/0x830
[  463.609953]  [<ffffffff81575aec>] ? trace_hardirqs_on_caller+0x49c/0x6f0
[  463.616766]  [<ffffffff8603c1e6>] netfilter_net_exit+0x36/0xd0
[  463.622713]  [<ffffffff85d9f8ee>] ops_exit_list+0xae/0x180
[  463.628341]  [<ffffffff85da36c0>] cleanup_net+0x320/0x720
[  463.633853]  [<ffffffff85da33a0>] ? net_drop_ns+0x80/0x80
[  463.639363]  [<ffffffff81576850>] ? debug_check_no_locks_freed+0x4c0/0x4c0
[  463.646397]  [<ffffffff815cfa1b>] ? debug_lockdep_rcu_enabled+0x7b/0x90
[  463.653185]  [<ffffffff8147d09b>] process_one_work+0x7ab/0x1ae0
[  463.659232]  [<ffffffff8147cff4>] ? process_one_work+0x704/0x1ae0
[  463.665444]  [<ffffffff8147c8f0>] ? mod_delayed_work_on+0x190/0x190
[  463.671820]  [<ffffffff8147e5b0>] ? worker_thread+0x1e0/0x1450
[  463.677772]  [<ffffffff8147e9dc>] worker_thread+0x60c/0x1450
[  463.683549]  [<ffffffff8147e3d0>] ? process_one_work+0x1ae0/0x1ae0
[  463.689845]  [<ffffffff8147e3d0>] ? process_one_work+0x1ae0/0x1ae0
[  463.696135]  [<ffffffff81494b5c>] kthread+0x23c/0x390
[  463.701319]  [<ffffffff81575aec>] ? trace_hardirqs_on_caller+0x49c/0x6f0
[  463.708134]  [<ffffffff81494920>] ? kthread_create_on_node+0xa0/0xa0
[  463.714597]  [<ffffffff81494920>] ? kthread_create_on_node+0xa0/0xa0
[  463.721069]  [<ffffffff81494920>] ? kthread_create_on_node+0xa0/0xa0
[  463.727560]  [<ffffffff8763975a>] ret_from_fork+0x2a/0x40
[  463.734482] Kernel Offset: disabled