[ 45.880362] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 45.880609] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 45.880612] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 45.881879] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 46.568204] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 46.585898] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 132.998606] NOHZ: local_softirq_pending 08 [ 256.513713] NOHZ: local_softirq_pending 08 [ 360.194070] NOHZ: local_softirq_pending 08 [ 399.872160] NOHZ: local_softirq_pending 08 [ 461.794743] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 461.802443] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 461.810682] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 461.817398] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 461.827071] device bridge_slave_1 left promiscuous mode [ 461.833158] bridge0: port 2(bridge_slave_1) entered disabled state [ 461.843216] device bridge_slave_0 left promiscuous mode [ 461.848860] bridge0: port 1(bridge_slave_0) entered disabled state [ 461.860801] device veth1_macvtap left promiscuous mode [ 461.868258] device veth0_macvtap left promiscuous mode [ 461.874728] device veth1_vlan left promiscuous mode [ 461.880720] device veth0_vlan left promiscuous mode [ 461.962268] team0 (unregistering): Port device team_slave_1 removed [ 461.973188] team0 (unregistering): Port device team_slave_0 removed [ 461.985262] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 461.997837] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 462.037498] bond0 (unregistering): Released all slaves [ 462.269138] ------------[ cut here ]------------ [ 462.278444] WARNING: CPU: 0 PID: 6 at net/netfilter/core.c:151 nf_unregister_net_hook+0x345/0x570 [ 462.287564] nf_unregister_net_hook: hook not found! [ 462.292615] Kernel panic - not syncing: panic_on_warn set ... [ 462.292615] [ 462.299975] CPU: 0 PID: 6 Comm: kworker/u4:0 Not tainted 4.8.0-syzkaller #0 [ 462.307076] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 462.316434] Workqueue: netns cleanup_net [ 462.325475] ffff88012b097750 ffffffff8379f2a1 1ffffffff11787e2 0000000041b58ab3 [ 462.333466] ffffffff884f38ec ffffffff8379f0e4 ffff88012b097710 0000000000000000 [ 462.341543] ffff88012b097770 ffffffff815aa576 ffff88012b097720 ffffffff875cdd21 [ 462.349616] Call Trace: [ 462.352420] [] dump_stack+0x1bd/0x29c [ 462.357873] [] ? _atomic_dec_and_lock+0xc4/0xc4 [ 462.364252] [] ? console_unlock+0x416/0xc40 [ 462.370229] [] ? _raw_spin_unlock_irqrestore+0x71/0xf0 [ 462.377132] [] ? nf_unregister_net_hook+0x345/0x570 [ 462.383875] [] panic+0x1e5/0x448 [ 462.388884] [] ? copy_signal+0xb38/0xb38 [ 462.394606] [] ? vprintk_emit+0x362/0x9d0 [ 462.400480] [] __warn+0x194/0x1d0 [ 462.405558] [] warn_slowpath_fmt+0x92/0xb0 [ 462.411425] [] ? __warn+0x1d0/0x1d0 [ 462.416695] [] nf_unregister_net_hook+0x345/0x570 [ 462.423188] [] ? nf_register_net_hook+0x830/0x830 [ 462.430054] [] ? trace_hardirqs_on_caller+0x49c/0x6f0 [ 462.437411] [] netfilter_net_exit+0x36/0xd0 [ 462.443451] [] ops_exit_list+0xae/0x180 [ 462.449062] [] cleanup_net+0x320/0x720 [ 462.454639] [] ? net_drop_ns+0x80/0x80 [ 462.460240] [] ? debug_check_no_locks_freed+0x4c0/0x4c0 [ 462.467240] [] ? debug_lockdep_rcu_enabled+0x7b/0x90 [ 462.474043] [] process_one_work+0x7ab/0x1ae0 [ 462.480088] [] ? process_one_work+0x704/0x1ae0 [ 462.486294] [] ? mod_delayed_work_on+0x190/0x190 [ 462.492686] [] ? worker_thread+0x1e0/0x1450 [ 462.498650] [] worker_thread+0x60c/0x1450 [ 462.504551] [] ? process_one_work+0x1ae0/0x1ae0 [ 462.510960] [] ? process_one_work+0x1ae0/0x1ae0 [ 462.518853] [] kthread+0x23c/0x390 [ 462.524218] [] ? trace_hardirqs_on_caller+0x49c/0x6f0 [ 462.531053] [] ? kthread_worker_fn+0x7b0/0x7b0 [ 462.537884] [] ? kthread_worker_fn+0x7b0/0x7b0 [ 462.544088] [] ? kthread_worker_fn+0x7b0/0x7b0 [ 462.550303] [] ret_from_fork+0x2a/0x40 [ 462.557167] Kernel Offset: disabled