[   43.906077] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[   43.915979] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
[   43.925747] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[   43.935702] batman_adv: batadv0: Interface activated: batadv_slave_1
[   43.943086] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[  274.312369] NOHZ: local_softirq_pending 08
[  274.316738] NOHZ: local_softirq_pending 08
[  274.951164] NOHZ: local_softirq_pending 08
[  315.913123] NOHZ: local_softirq_pending 08
[  315.917488] NOHZ: local_softirq_pending 08
[  460.428954] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  460.435662] batman_adv: batadv0: Removing interface: batadv_slave_0
[  460.443692] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  460.450627] batman_adv: batadv0: Removing interface: batadv_slave_1
[  460.460257] device bridge_slave_1 left promiscuous mode
[  460.465952] bridge0: port 2(bridge_slave_1) entered disabled state
[  460.474857] device bridge_slave_0 left promiscuous mode
[  460.480344] bridge0: port 1(bridge_slave_0) entered disabled state
[  460.491750] device veth1_macvtap left promiscuous mode
[  460.497369] device veth0_macvtap left promiscuous mode
[  460.502657] device veth1_vlan left promiscuous mode
[  460.508024] device veth0_vlan left promiscuous mode
[  460.587956] team0 (unregistering): Port device team_slave_1 removed
[  460.599416] team0 (unregistering): Port device team_slave_0 removed
[  460.611396] bond0 (unregistering): Releasing backup interface bond_slave_1
[  460.622302] bond0 (unregistering): Releasing backup interface bond_slave_0
[  460.662752] bond0 (unregistering): Released all slaves
[  460.861434] ------------[ cut here ]------------
[  460.866374] WARNING: CPU: 1 PID: 24 at net/netfilter/core.c:151 nf_unregister_net_hook+0x345/0x570
[  460.875451] nf_unregister_net_hook: hook not found!
[  460.880749] Kernel panic - not syncing: panic_on_warn set ...
[  460.880749] 
[  460.888108] CPU: 1 PID: 24 Comm: kworker/u4:1 Not tainted 4.9.0-rc1-syzkaller #0
[  460.895625] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  460.904972] Workqueue: netns cleanup_net
[  460.909128]  ffff88012b23f750 ffffffff835fdca1 1ffffffff1178802 0000000041b58ab3
[  460.917814]  ffffffff884a8664 ffffffff835fdae4 ffff88012b23f710 0000000000000000
[  460.925785]  ffff88012b23f770 ffffffff815abfc6 ffff88012b23f720 ffffffff8741b7f1
[  460.933787] Call Trace:
[  460.936422]  [<ffffffff835fdca1>] dump_stack+0x1bd/0x29c
[  460.941857]  [<ffffffff835fdae4>] ? _atomic_dec_and_lock+0xc4/0xc4
[  460.948169]  [<ffffffff815abfc6>] ? console_unlock+0x416/0xc40
[  460.954504]  [<ffffffff8741b7f1>] ? _raw_spin_unlock_irqrestore+0x71/0xf0
[  460.961402]  [<ffffffff85e1ea55>] ? nf_unregister_net_hook+0x345/0x570
[  460.968073]  [<ffffffff817fbc16>] panic+0x1e5/0x44f
[  460.973067]  [<ffffffff817fba31>] ? copy_signal+0xb38/0xb38
[  460.978746]  [<ffffffff815acb52>] ? vprintk_emit+0x362/0x9d0
[  460.984540]  [<ffffffff81413a74>] __warn+0x194/0x1d0
[  460.989614]  [<ffffffff81413b42>] warn_slowpath_fmt+0x92/0xb0
[  460.995466]  [<ffffffff81413ab0>] ? __warn+0x1d0/0x1d0
[  461.000723]  [<ffffffff85e1ea55>] nf_unregister_net_hook+0x345/0x570
[  461.007185]  [<ffffffff85e1e710>] ? nf_register_net_hook+0x830/0x830
[  461.013676]  [<ffffffff81575aec>] ? trace_hardirqs_on_caller+0x49c/0x6f0
[  461.020486]  [<ffffffff85e1f1e6>] netfilter_net_exit+0x36/0xd0
[  461.026427]  [<ffffffff85b828ee>] ops_exit_list+0xae/0x180
[  461.032046]  [<ffffffff85b866c0>] cleanup_net+0x320/0x720
[  461.037559]  [<ffffffff85b863a0>] ? net_drop_ns+0x80/0x80
[  461.043072]  [<ffffffff81576850>] ? debug_check_no_locks_freed+0x4c0/0x4c0
[  461.050100]  [<ffffffff815cfa1b>] ? debug_lockdep_rcu_enabled+0x7b/0x90
[  461.056850]  [<ffffffff8147d09b>] process_one_work+0x7ab/0x1ae0
[  461.062886]  [<ffffffff8147cff4>] ? process_one_work+0x704/0x1ae0
[  461.069095]  [<ffffffff8147c8f0>] ? mod_delayed_work_on+0x190/0x190
[  461.075468]  [<ffffffff8147e5b0>] ? worker_thread+0x1e0/0x1450
[  461.081419]  [<ffffffff8147e9dc>] worker_thread+0x60c/0x1450
[  461.087186]  [<ffffffff8147e3d0>] ? process_one_work+0x1ae0/0x1ae0
[  461.093487]  [<ffffffff8147e3d0>] ? process_one_work+0x1ae0/0x1ae0
[  461.099776]  [<ffffffff81494b5c>] kthread+0x23c/0x390
[  461.105368]  [<ffffffff81575aec>] ? trace_hardirqs_on_caller+0x49c/0x6f0
[  461.112187]  [<ffffffff81494920>] ? kthread_create_on_node+0xa0/0xa0
[  461.118658]  [<ffffffff81494920>] ? kthread_create_on_node+0xa0/0xa0
[  461.125137]  [<ffffffff81494920>] ? kthread_create_on_node+0xa0/0xa0
[  461.131646]  [<ffffffff8741c75a>] ret_from_fork+0x2a/0x40
[  461.138559] Kernel Offset: disabled