[  478.026367] syz-executor.0 (5926) used greatest stack depth: 24176 bytes left
[  478.806758] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  478.817302] batman_adv: batadv0: Removing interface: batadv_slave_0
[  478.828847] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  478.840004] batman_adv: batadv0: Removing interface: batadv_slave_1
[  478.851973] device bridge_slave_1 left promiscuous mode
[  478.860474] bridge0: port 2(bridge_slave_1) entered disabled state
[  478.907785] device bridge_slave_0 left promiscuous mode
[  478.914956] bridge0: port 1(bridge_slave_0) entered disabled state
[  479.000963] device veth1_macvtap left promiscuous mode
[  479.009910] device veth0_macvtap left promiscuous mode
[  479.015774] device veth1_vlan left promiscuous mode
[  479.022360] device veth0_vlan left promiscuous mode
[  479.109294] team0 (unregistering): Port device team_slave_1 removed
[  479.126659] team0 (unregistering): Port device team_slave_0 removed
[  479.141677] bond0 (unregistering): Releasing backup interface bond_slave_1
[  479.179887] bond0 (unregistering): Releasing backup interface bond_slave_0
[  479.249676] bond0 (unregistering): Released all slaves
Warning: Permanently added '10.128.1.43' (ECDSA) to the list of known hosts.
[  483.584932] ------------[ cut here ]------------
[  483.591600] WARNING: CPU: 1 PID: 26450 at net/netfilter/core.c:151 nf_unregister_net_hook+0x28a/0x3c0
[  483.601491] nf_unregister_net_hook: hook not found!
[  483.609070] Kernel panic - not syncing: panic_on_warn set ...
[  483.609070] 
[  483.617868] CPU: 1 PID: 26450 Comm: kworker/u4:0 Not tainted 4.9.0-rc1-syzkaller #0
[  483.630673] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  483.643387] Workqueue: netns cleanup_net
[  483.647594]  ffff880128a77890 ffffffff82d76a92 ffffffff86085f80 ffff880128a77968
[  483.659639]  ffffffff868b2400 ffffffff84d73d0a 0000000000000009 ffff880128a77958
[  483.672498]  ffffffff81641ef2 0000000041b58ab3 ffffffff86d6766f ffffffff81641d3c
[  483.681855] Call Trace:
[  483.685534]  [<ffffffff82d76a92>] dump_stack+0x136/0x1d4
[  483.692516]  [<ffffffff84d73d0a>] ? nf_unregister_net_hook+0x28a/0x3c0
[  483.701414]  [<ffffffff81641ef2>] panic+0x1b6/0x358
[  483.708253]  [<ffffffff81641d3c>] ? devm_memremap+0xec/0xec
[  483.714555]  [<ffffffff81480b30>] ? vprintk_emit+0x3d0/0x7f0
[  483.722238]  [<ffffffff84d73d0a>] ? nf_unregister_net_hook+0x28a/0x3c0
[  483.729977]  [<ffffffff81349a1d>] __warn+0x18d/0x1b0
[  483.735914]  [<ffffffff81453e3e>] ? trace_hardirqs_on_caller+0x49e/0x5c0
[  483.743507]  [<ffffffff81349ad2>] warn_slowpath_fmt+0x92/0xb0
[  483.749657]  [<ffffffff81349a40>] ? __warn+0x1b0/0x1b0
[  483.755204]  [<ffffffff81453e3e>] ? trace_hardirqs_on_caller+0x49e/0x5c0
[  483.763359]  [<ffffffff84d73d0a>] nf_unregister_net_hook+0x28a/0x3c0
[  483.770124]  [<ffffffff84d74106>] netfilter_net_exit+0x36/0xa0
[  483.776611]  [<ffffffff84b6af8e>] ops_exit_list.isra.0+0x8e/0x120
[  483.784466]  [<ffffffff84b6d290>] cleanup_net+0x2d0/0x570
[  483.790898]  [<ffffffff84b6cfc0>] ? net_drop_ns+0x60/0x60
[  483.798367]  [<ffffffff8149d1f7>] ? debug_lockdep_rcu_enabled+0x77/0x90
[  483.805456]  [<ffffffff8139b10d>] process_one_work+0x67d/0x14d0
[  483.811530]  [<ffffffff8139b062>] ? process_one_work+0x5d2/0x14d0
[  483.818612]  [<ffffffff813c8f41>] ? finish_task_switch+0x151/0x630
[  483.825464]  [<ffffffff8139aa90>] ? cancel_delayed_work_sync+0x10/0x10
[  483.832355]  [<ffffffff8139c041>] worker_thread+0xe1/0x1050
[  483.839964]  [<ffffffff85ea734c>] ? __schedule+0x80c/0x1d20
[  483.849906]  [<ffffffff8139bf60>] ? process_one_work+0x14d0/0x14d0
[  483.858044]  [<ffffffff813acc4e>] kthread+0x20e/0x2d0
[  483.863740]  [<ffffffff813aca40>] ? kthread_park+0x80/0x80
[  483.869606]  [<ffffffff813aca40>] ? kthread_park+0x80/0x80
[  483.876764]  [<ffffffff813aca40>] ? kthread_park+0x80/0x80
[  483.884694]  [<ffffffff85eb7fda>] ret_from_fork+0x2a/0x40
[  483.896377] Kernel Offset: disabled