[   70.302663] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready
[   70.311566] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[   70.359081] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
[   70.366246] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
[   70.375349] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
[   70.386146] device veth0_vlan entered promiscuous mode
[   70.393892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[   70.401152] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[   70.408911] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[   70.418148] device veth1_vlan entered promiscuous mode
[  488.383183] device bridge_slave_1 left promiscuous mode
[  488.388822] bridge0: port 2(bridge_slave_1) entered disabled state
[  488.443501] device bridge_slave_0 left promiscuous mode
[  488.449207] bridge0: port 1(bridge_slave_0) entered disabled state
[  488.536275] device veth1_vlan left promiscuous mode
[  488.541583] device veth0_vlan left promiscuous mode
[  488.584015] team0 (unregistering): Port device team_slave_1 removed
[  488.597346] team0 (unregistering): Port device team_slave_0 removed
[  488.606953] bond0 (unregistering): Releasing backup interface bond_slave_1
[  488.636576] bond0 (unregistering): Releasing backup interface bond_slave_0
[  488.715494] bond0 (unregistering): Released all slaves
Warning: Permanently added '10.128.0.194' (ECDSA) to the list of known hosts.
[  493.051173] ------------[ cut here ]------------
[  493.056211] WARNING: CPU: 1 PID: 22 at net/netfilter/core.c:151 nf_unregister_net_hook+0x28a/0x3c0
[  493.065401] nf_unregister_net_hook: hook not found!
[  493.070839] Kernel panic - not syncing: panic_on_warn set ...
[  493.070839] 
[  493.078228] CPU: 1 PID: 22 Comm: kworker/u4:1 Not tainted 4.9.0-rc1-syzkaller #0
[  493.085764] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  493.095314] Workqueue: netns cleanup_net
[  493.099506]  ffff88012b24f890 ffffffff82d7bbd6 ffffffff86088840 ffff88012b24f968
[  493.107535]  ffffffff868b3800 ffffffff84d7a09a ffff88012b24f958 ffffffff8163d5d2
[  493.115611]  0000000041b58ab3 ffffffff86d6b20d ffffffff8163d41c ffffffff814779f4
[  493.123642] Call Trace:
[  493.126314]  [<ffffffff82d7bbd6>] dump_stack+0xe6/0x120
[  493.131675]  [<ffffffff84d7a09a>] ? nf_unregister_net_hook+0x28a/0x3c0
[  493.138429]  [<ffffffff8163d5d2>] panic+0x1b6/0x358
[  493.143441]  [<ffffffff8163d41c>] ? percpu_up_read_preempt_enable.constprop.43+0xb9/0xb9
[  493.152392]  [<ffffffff814779f4>] ? vprintk_emit+0x3b4/0x7f0
[  493.158240]  [<ffffffff84d7a09a>] ? nf_unregister_net_hook+0x28a/0x3c0
[  493.165006]  [<ffffffff8135267d>] __warn+0x18d/0x1b0
[  493.170374]  [<ffffffff8144d22c>] ? trace_hardirqs_on_caller+0x44c/0x5e0
[  493.177263]  [<ffffffff81352732>] warn_slowpath_fmt+0x92/0xb0
[  493.183517]  [<ffffffff813526a0>] ? __warn+0x1b0/0x1b0
[  493.189825]  [<ffffffff8144d22c>] ? trace_hardirqs_on_caller+0x44c/0x5e0
[  493.196675]  [<ffffffff84d7a09a>] nf_unregister_net_hook+0x28a/0x3c0
[  493.203161]  [<ffffffff84d7a2f6>] netfilter_net_exit+0x36/0xa0
[  493.209159]  [<ffffffff84b6b06e>] ops_exit_list.isra.4+0x8e/0x120
[  493.215398]  [<ffffffff84b6da90>] cleanup_net+0x2d0/0x570
[  493.221026]  [<ffffffff84b6d7c0>] ? net_drop_ns+0x60/0x60
[  493.226624]  [<ffffffff814941a7>] ? debug_lockdep_rcu_enabled+0x77/0x90
[  493.233406]  [<ffffffff813a6252>] process_one_work+0x6a2/0x1560
[  493.239543]  [<ffffffff813a61ac>] ? process_one_work+0x5fc/0x1560
[  493.245871]  [<ffffffff813d098f>] ? finish_task_switch+0x17f/0x630
[  493.252324]  [<ffffffff813a5bb0>] ? cancel_delayed_work_sync+0x10/0x10
[  493.259322]  [<ffffffff813a71f1>] worker_thread+0xe1/0x1050
[  493.265025]  [<ffffffff813a7110>] ? process_one_work+0x1560/0x1560
[  493.271337]  [<ffffffff813b7c8e>] kthread+0x20e/0x2d0
[  493.276505]  [<ffffffff813b7a80>] ? kthread_park+0x80/0x80
[  493.282517]  [<ffffffff813b7a80>] ? kthread_park+0x80/0x80
[  493.288123]  [<ffffffff813b7a80>] ? kthread_park+0x80/0x80
[  493.294012]  [<ffffffff85ecb0da>] ret_from_fork+0x2a/0x40
[  493.301151] Kernel Offset: disabled