[  456.941902] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  456.951378] batman_adv: batadv0: Removing interface: batadv_slave_0
[  456.959746] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  456.966418] batman_adv: batadv0: Removing interface: batadv_slave_1
[  456.976939] device bridge_slave_1 left promiscuous mode
[  456.983002] bridge0: port 2(bridge_slave_1) entered disabled state
[  457.002446] device bridge_slave_0 left promiscuous mode
[  457.007941] bridge0: port 1(bridge_slave_0) entered disabled state
[  457.021506] device veth1_macvtap left promiscuous mode
[  457.027327] device veth0_macvtap left promiscuous mode
[  457.032619] device veth1_vlan left promiscuous mode
[  457.038572] device veth0_vlan left promiscuous mode
[  457.101755] team0 (unregistering): Port device team_slave_1 removed
[  457.110528] team0 (unregistering): Port device team_slave_0 removed
[  457.121258] bond0 (unregistering): Releasing backup interface bond_slave_1
[  457.131125] bond0 (unregistering): Releasing backup interface bond_slave_0
[  457.154669] bond0 (unregistering): Released all slaves
[  457.360494] ------------[ cut here ]------------
[  457.365375] WARNING: CPU: 1 PID: 2307 at net/netfilter/core.c:147 nf_unregister_net_hook+0x292/0x3c0
[  457.374870] nf_unregister_net_hook: hook not found!
[  457.380077] Kernel panic - not syncing: panic_on_warn set ...
[  457.380077] 
[  457.387414] CPU: 1 PID: 2307 Comm: kworker/u4:3 Not tainted 4.10.0-rc3-syzkaller #0
[  457.395184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  457.404583] Workqueue: netns cleanup_net
[  457.408648] Call Trace:
[  457.411218]  dump_stack+0x136/0x1d4
[  457.414814]  ? nf_unregister_net_hook+0x292/0x3c0
[  457.419667]  panic+0x1b6/0x358
[  457.422841]  ? devm_memremap+0xec/0xec
[  457.426700]  ? vprintk_emit+0x3e2/0x7e0
[  457.430695]  ? nf_unregister_net_hook+0x292/0x3c0
[  457.435546]  __warn+0x18d/0x1b0
[  457.438828]  warn_slowpath_fmt+0x92/0xb0
[  457.442870]  ? __warn+0x1b0/0x1b0
[  457.446292]  ? kfree+0x193/0x2d0
[  457.449629]  nf_unregister_net_hook+0x292/0x3c0
[  457.454276]  netfilter_net_exit+0x36/0xa0
[  457.458407]  ops_exit_list.isra.0+0x8e/0x120
[  457.462794]  cleanup_net+0x38e/0x7d0
[  457.466477]  ? net_drop_ns+0x60/0x60
[  457.470219]  ? _raw_spin_unlock_irqrestore+0x6d/0xd0
[  457.475307]  ? debug_lockdep_rcu_enabled+0x77/0x90
[  457.480206]  ? rcu_lockdep_current_cpu_online+0xdc/0x130
[  457.485645]  process_one_work+0x685/0x1660
[  457.489849]  ? process_one_work+0x5da/0x1660
[  457.494244]  ? finish_task_switch+0x17f/0x640
[  457.498710]  ? finish_task_switch+0x151/0x640
[  457.503186]  ? pwq_dec_nr_in_flight+0x2b0/0x2b0
[  457.507836]  worker_thread+0xe1/0x1110
[  457.511971]  kthread+0x2c9/0x3d0
[  457.515307]  ? process_one_work+0x1660/0x1660
[  457.519769]  ? kthread_create_on_node+0xa0/0xa0
[  457.524420]  ret_from_fork+0x2a/0x40
[  457.529459] Kernel Offset: disabled