[ 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] [] dump_stack+0x136/0x1d4 [ 483.179853] [] ? nf_unregister_net_hook+0x28a/0x3c0 [ 483.186570] [] panic+0x1b6/0x358 [ 483.191570] [] ? devm_memremap+0xec/0xec [ 483.197295] [] ? vprintk_emit+0x3d0/0x7f0 [ 483.203090] [] ? nf_unregister_net_hook+0x28a/0x3c0 [ 483.209797] [] __warn+0x18d/0x1b0 [ 483.214923] [] ? trace_hardirqs_on_caller+0x49e/0x5c0 [ 483.221741] [] warn_slowpath_fmt+0x92/0xb0 [ 483.227612] [] ? __warn+0x1b0/0x1b0 [ 483.232864] [] ? trace_hardirqs_on_caller+0x49e/0x5c0 [ 483.239681] [] nf_unregister_net_hook+0x28a/0x3c0 [ 483.246172] [] netfilter_net_exit+0x36/0xa0 [ 483.252120] [] ops_exit_list.isra.0+0x8e/0x120 [ 483.258329] [] cleanup_net+0x2d0/0x570 [ 483.263850] [] ? net_drop_ns+0x60/0x60 [ 483.269513] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 483.276295] [] process_one_work+0x67d/0x14d0 [ 483.282359] [] ? process_one_work+0x5d2/0x14d0 [ 483.288610] [] ? finish_task_switch+0x151/0x630 [ 483.294923] [] ? cancel_delayed_work_sync+0x10/0x10 [ 483.301769] [] worker_thread+0xe1/0x1050 [ 483.307468] [] ? process_one_work+0x14d0/0x14d0 [ 483.313866] [] kthread+0x20e/0x2d0 [ 483.319046] [] ? kthread_park+0x80/0x80 [ 483.324644] [] ? kthread_park+0x80/0x80 [ 483.330258] [] ? kthread_park+0x80/0x80 [ 483.335975] [] ret_from_fork+0x2a/0x40 [ 483.342919] Kernel Offset: disabled