kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 5801 Comm: syz-executor1 Not tainted 4.16.0-rc5+ #262
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lowpan_device_event+0xca/0x130 net/ieee802154/6lowpan/core.c:220
RSP: 0018:ffff8801a59473f0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85af0f10
RDX: 0000000000000006 RSI: ffffc90002427000 RDI: 0000000000000030
RBP: ffff8801a5947408 R08: 0000000000000000 R09: 1ffff10034b28e4c
R10: ffff8801a5947418 R11: 0000000000000001 R12: 0000000000000006
R13: 0000000000000000 R14: ffffffff876997a0 R15: ffffffff87688220
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f77a6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000009bc24000 CR3: 00000001da49d004 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 notifier_call_chain+0x136/0x2c0 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x32/0x70 net/core/dev.c:1707
 call_netdevice_notifiers net/core/dev.c:1725 [inline]
 rollback_registered_many+0x8b5/0xe20 net/core/dev.c:7398
 rollback_registered+0x1be/0x3c0 net/core/dev.c:7440
 unregister_netdevice_queue+0x2e3/0x5f0 net/core/dev.c:8454
 unregister_netdevice include/linux/netdevice.h:2473 [inline]
 __tun_detach+0x520/0x10b0 drivers/net/tun.c:735
 tun_detach drivers/net/tun.c:745 [inline]
 tun_chr_close+0x44/0x60 drivers/net/tun.c:3167
 __fput+0x327/0x7e0 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x199/0x270 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x275/0x2f0 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_32_irqs_on arch/x86/entry/common.c:336 [inline]
 do_fast_syscall_32+0xbe6/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7faac99
RSP: 002b:00000000f77a609c EFLAGS: 00000286 ORIG_RAX: 0000000000000006
RAX: 0000000000000000 RBX: 0000000000000013 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 59 48 8b 9b 50 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 30 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 3e 48 8b 5b 30 41 bd 01 00 00 00 48 85 db 74 92 
RIP: lowpan_device_event+0xca/0x130 net/ieee802154/6lowpan/core.c:220 RSP: ffff8801a59473f0
---[ end trace 6d0925c83d8bdf01 ]---