[   38.992068] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[   39.001774] batman_adv: batadv0: Interface activated: batadv_slave_1
[   39.011692] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[   39.019432] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[   86.723424] NOHZ: local_softirq_pending 08
[   86.727716] NOHZ: local_softirq_pending 08
[   86.731976] NOHZ: local_softirq_pending 08
[  310.725545] NOHZ: local_softirq_pending 08
[  373.443935] NOHZ: local_softirq_pending 08
[  373.450074] NOHZ: local_softirq_pending 08
[  454.845381] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  454.852085] batman_adv: batadv0: Removing interface: batadv_slave_0
[  454.860083] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  454.866805] batman_adv: batadv0: Removing interface: batadv_slave_1
[  454.876239] device bridge_slave_1 left promiscuous mode
[  454.881938] bridge0: port 2(bridge_slave_1) entered disabled state
[  454.891285] device bridge_slave_0 left promiscuous mode
[  454.896794] bridge0: port 1(bridge_slave_0) entered disabled state
[  454.908568] device veth1_macvtap left promiscuous mode
[  454.914200] device veth0_macvtap left promiscuous mode
[  454.919495] device veth1_vlan left promiscuous mode
[  454.924959] device veth0_vlan left promiscuous mode
[  455.007579] team0 (unregistering): Port device team_slave_1 removed
[  455.017324] team0 (unregistering): Port device team_slave_0 removed
[  455.028972] bond0 (unregistering): Releasing backup interface bond_slave_1
[  455.041320] bond0 (unregistering): Releasing backup interface bond_slave_0
[  455.080415] bond0 (unregistering): Released all slaves
[  455.258167] ------------[ cut here ]------------
[  455.263085] WARNING: CPU: 1 PID: 10552 at net/netfilter/core.c:193 nf_unregister_net_hook+0x3b4/0x850
[  455.272415] nf_unregister_net_hook: hook not found!
[  455.277521] Kernel panic - not syncing: panic_on_warn set ...
[  455.277521] 
[  455.284886] CPU: 1 PID: 10552 Comm: kworker/u4:0 Not tainted 4.8.0-syzkaller #0
[  455.292326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  455.301683] Workqueue: netns cleanup_net
[  455.305830]  ffff88010098f748 ffffffff837a86e1 1ffffffff117876a 0000000041b58ab3
[  455.313864]  ffffffff884f1024 ffffffff837a8524 ffff88010098f708 0000000000000000
[  455.321861]  00000000000005db 00000000000005db 0000000000000037 ffff88010098f780
[  455.329850] Call Trace:
[  455.332477]  [<ffffffff837a86e1>] dump_stack+0x1bd/0x29c
[  455.337908]  [<ffffffff837a8524>] ? _atomic_dec_and_lock+0xc4/0xc4
[  455.344255]  [<ffffffff815ab576>] ? console_unlock+0x416/0xc40
[  455.350201]  [<ffffffff85fcf0a4>] ? nf_unregister_net_hook+0x3b4/0x850
[  455.356878]  [<ffffffff817f6596>] panic+0x1e5/0x448
[  455.362145]  [<ffffffff817f63b1>] ? copy_signal+0xb38/0xb38
[  455.368562]  [<ffffffff814140d4>] __warn+0x194/0x1d0
[  455.373637]  [<ffffffff814141a2>] warn_slowpath_fmt+0x92/0xb0
[  455.380193]  [<ffffffff81414110>] ? __warn+0x1d0/0x1d0
[  455.385480]  [<ffffffff85fcf0a4>] nf_unregister_net_hook+0x3b4/0x850
[  455.391984]  [<ffffffff81be6078>] ? remove_proc_entry+0x198/0x2c0
[  455.398197]  [<ffffffff85fcecf0>] ? nf_register_net_hook+0xb90/0xb90
[  455.404708]  [<ffffffff8157523c>] ? trace_hardirqs_on_caller+0x49c/0x6f0
[  455.411523]  [<ffffffff85fcf7c6>] netfilter_net_exit+0x36/0xd0
[  455.417476]  [<ffffffff85d328ae>] ops_exit_list+0xae/0x180
[  455.423083]  [<ffffffff85d36680>] cleanup_net+0x320/0x720
[  455.428587]  [<ffffffff85d36360>] ? net_drop_ns+0x80/0x80
[  455.434108]  [<ffffffff81575fa0>] ? debug_check_no_locks_freed+0x4c0/0x4c0
[  455.441137]  [<ffffffff815cef2b>] ? debug_lockdep_rcu_enabled+0x7b/0x90
[  455.447901]  [<ffffffff8147d85b>] process_one_work+0x7ab/0x1ae0
[  455.453933]  [<ffffffff8147d7b4>] ? process_one_work+0x704/0x1ae0
[  455.460133]  [<ffffffff8147d0b0>] ? mod_delayed_work_on+0x190/0x190
[  455.466518]  [<ffffffff8147ed70>] ? worker_thread+0x1e0/0x1450
[  455.472468]  [<ffffffff8147f19c>] worker_thread+0x60c/0x1450
[  455.478250]  [<ffffffff8147eb90>] ? process_one_work+0x1ae0/0x1ae0
[  455.484553]  [<ffffffff8147eb90>] ? process_one_work+0x1ae0/0x1ae0
[  455.490854]  [<ffffffff814958ac>] kthread+0x23c/0x390
[  455.496029]  [<ffffffff8157523c>] ? trace_hardirqs_on_caller+0x49c/0x6f0
[  455.502850]  [<ffffffff81495670>] ? kthread_worker_fn+0x7b0/0x7b0
[  455.509064]  [<ffffffff81495670>] ? kthread_worker_fn+0x7b0/0x7b0
[  455.515275]  [<ffffffff81495670>] ? kthread_worker_fn+0x7b0/0x7b0
[  455.521495]  [<ffffffff875c145a>] ret_from_fork+0x2a/0x40
[  455.528282] Kernel Offset: disabled