[   61.991974] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[   62.001427] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
[   62.011533] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[   62.020978] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
[   62.030984] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
[   62.041057] batman_adv: batadv0: Interface activated: batadv_slave_1
[   62.049870] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[  150.760610] NOHZ: local_softirq_pending 08
[  272.999422] NOHZ: local_softirq_pending 08
[  395.247270] NOHZ: local_softirq_pending 08
[  478.579940] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  478.586682] batman_adv: batadv0: Removing interface: batadv_slave_0
[  478.594712] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  478.601431] batman_adv: batadv0: Removing interface: batadv_slave_1
[  478.609651] device bridge_slave_1 left promiscuous mode
[  478.615348] bridge0: port 2(bridge_slave_1) entered disabled state
[  478.670265] device bridge_slave_0 left promiscuous mode
[  478.675726] bridge0: port 1(bridge_slave_0) entered disabled state
[  478.772197] device veth1_macvtap left promiscuous mode
[  478.777707] device veth0_macvtap left promiscuous mode
[  478.783677] device veth1_vlan left promiscuous mode
[  478.789386] device veth0_vlan left promiscuous mode
[  478.866147] team0 (unregistering): Port device team_slave_1 removed
[  478.875599] team0 (unregistering): Port device team_slave_0 removed
[  478.886112] bond0 (unregistering): Releasing backup interface bond_slave_1
[  478.912569] bond0 (unregistering): Releasing backup interface bond_slave_0
[  478.996647] bond0 (unregistering): Released all slaves
Warning: Permanently added '10.128.15.194' (ECDSA) to the list of known hosts.
[  483.098281] ------------[ cut here ]------------
[  483.103262] WARNING: CPU: 0 PID: 6888 at net/netfilter/core.c:151 nf_unregister_net_hook+0x28a/0x3c0
[  483.113177] nf_unregister_net_hook: hook not found!
[  483.118734] Kernel panic - not syncing: panic_on_warn set ...
[  483.118734] 
[  483.126149] CPU: 0 PID: 6888 Comm: kworker/u4:5 Not tainted 4.9.0-rc1-syzkaller #0
[  483.133856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  483.143242] Workqueue: netns cleanup_net
[  483.147459]  ffff880129e37890 ffffffff82d76a92 ffffffff86085f80 ffff880129e37968
[  483.155466]  ffffffff868b2400 ffffffff84d73d0a 0000000000000009 ffff880129e37958
[  483.163638]  ffffffff81641ef2 0000000041b58ab3 ffffffff86d6766f ffffffff81641d3c
[  483.171692] Call Trace:
[  483.174383]  [<ffffffff82d76a92>] dump_stack+0x136/0x1d4
[  483.179853]  [<ffffffff84d73d0a>] ? nf_unregister_net_hook+0x28a/0x3c0
[  483.186570]  [<ffffffff81641ef2>] panic+0x1b6/0x358
[  483.191570]  [<ffffffff81641d3c>] ? devm_memremap+0xec/0xec
[  483.197295]  [<ffffffff81480b30>] ? vprintk_emit+0x3d0/0x7f0
[  483.203090]  [<ffffffff84d73d0a>] ? nf_unregister_net_hook+0x28a/0x3c0
[  483.209797]  [<ffffffff81349a1d>] __warn+0x18d/0x1b0
[  483.214923]  [<ffffffff81453e3e>] ? trace_hardirqs_on_caller+0x49e/0x5c0
[  483.221741]  [<ffffffff81349ad2>] warn_slowpath_fmt+0x92/0xb0
[  483.227612]  [<ffffffff81349a40>] ? __warn+0x1b0/0x1b0
[  483.232864]  [<ffffffff81453e3e>] ? trace_hardirqs_on_caller+0x49e/0x5c0
[  483.239681]  [<ffffffff84d73d0a>] nf_unregister_net_hook+0x28a/0x3c0
[  483.246172]  [<ffffffff84d74106>] netfilter_net_exit+0x36/0xa0
[  483.252120]  [<ffffffff84b6af8e>] ops_exit_list.isra.0+0x8e/0x120
[  483.258329]  [<ffffffff84b6d290>] cleanup_net+0x2d0/0x570
[  483.263850]  [<ffffffff84b6cfc0>] ? net_drop_ns+0x60/0x60
[  483.269513]  [<ffffffff8149d1f7>] ? debug_lockdep_rcu_enabled+0x77/0x90
[  483.276295]  [<ffffffff8139b10d>] process_one_work+0x67d/0x14d0
[  483.282359]  [<ffffffff8139b062>] ? process_one_work+0x5d2/0x14d0
[  483.288610]  [<ffffffff813c8f41>] ? finish_task_switch+0x151/0x630
[  483.294923]  [<ffffffff8139aa90>] ? cancel_delayed_work_sync+0x10/0x10
[  483.301769]  [<ffffffff8139c041>] worker_thread+0xe1/0x1050
[  483.307468]  [<ffffffff8139bf60>] ? process_one_work+0x14d0/0x14d0
[  483.313866]  [<ffffffff813acc4e>] kthread+0x20e/0x2d0
[  483.319046]  [<ffffffff813aca40>] ? kthread_park+0x80/0x80
[  483.324644]  [<ffffffff813aca40>] ? kthread_park+0x80/0x80
[  483.330258]  [<ffffffff813aca40>] ? kthread_park+0x80/0x80
[  483.335975]  [<ffffffff85eb7fda>] ret_from_fork+0x2a/0x40
[  483.342919] Kernel Offset: disabled