wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 9830 Comm: kworker/u4:6 Not tainted 4.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
task: ffff88011b22e000 task.stack: ffff8801278d8000
RIP: 0010:[<ffffffff85743634>]  [<ffffffff85743634>] nf_unregister_net_hook+0x44/0x540 net/netfilter/core.c:163
RSP: 0018:ffff8801278dfa68  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88011b22e810
RDX: 0000000000000008 RSI: ffffffff88ce77a0 RDI: 0000000000000040
RBP: ffff8801278dfa90 R08: 0000000000000006 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff880127b11e00
R13: dffffc0000000000 R14: ffffffff88ce77a0 R15: ffff880127b11e00
FS:  0000000000000000(0000) GS:ffff88013bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e6d68fd908 CR3: 0000000139a4f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff88ce77a0 ffff880127b11e00 dffffc0000000000 fffffbfff113948b
 ffff880127b11e00 ffff8801278dfab8 ffffffff85743c56 ffff8801278dfbc8
 ffffffff889ca458 dffffc0000000000 ffff8801278dfaf8 ffffffff85538ffe
Call Trace:
 [<ffffffff85743c56>] nf_unregister_hook_list net/netfilter/core.c:519 [inline]
 [<ffffffff85743c56>] netfilter_net_exit+0x36/0xa0 net/netfilter/core.c:551
 [<ffffffff85538ffe>] ops_exit_list.isra.0+0x8e/0x120 net/core/net_namespace.c:136
 [<ffffffff8553b300>] cleanup_net+0x2d0/0x540 net/core/net_namespace.c:430
 [<ffffffff8135263d>] process_one_work+0x67d/0x14d0 kernel/workqueue.c:2096
 [<ffffffff81353571>] worker_thread+0xe1/0x1050 kernel/workqueue.c:2230
 [<ffffffff813641ae>] kthread+0x20e/0x2d0 kernel/kthread.c:209
 [<ffffffff8687c95a>] ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:432
Code: 41 54 53 e8 8f d5 12 01 4c 89 ff 4c 89 f6 e8 74 f4 ff ff 48 8d 78 40 48 89 c3 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a8 04 00 00 4c 3b 73 40 0f 84 c6 02 00 00 49 
RIP  [<ffffffff85743634>] nf_unregister_net_hook+0x44/0x540 net/netfilter/core.c:163
 RSP <ffff8801278dfa68>
---[ end trace 4819d9c2db9f43af ]---