nla_parse: 12 callbacks suppressed
netlink: 4 bytes leftover after parsing attributes in process `syz-executor6'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor6'.
audit: type=1400 audit(1513744852.481:781): avc:  denied  { create } for  pid=12232 comm="syz-executor5" name="pfkey" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:insmod_t:s0 tclass=file permissive=1
BUG: unable to handle kernel NULL pointer dereference at 0000000000000578
IP: read_pnet include/net/net_namespace.h:270 [inline]
IP: dev_net include/linux/netdevice.h:2041 [inline]
IP: snmp6_unregister_dev+0x12/0x70 net/ipv6/proc.c:308
PGD 0 P4D 0 
Oops: 0000 [#1] SMP
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 27 Comm: kworker/u4:2 Not tainted 4.15.0-rc3-next-20171214+ #67
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:read_pnet include/net/net_namespace.h:270 [inline]
RIP: 0010:dev_net include/linux/netdevice.h:2041 [inline]
RIP: 0010:snmp6_unregister_dev+0x12/0x70 net/ipv6/proc.c:308
RSP: 0018:ffffc90000d47b28 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8801fac34400 RCX: ffffffff822a18ef
RDX: 0000000000000000 RSI: ffffffff83164ac0 RDI: ffff8801fac34400
RBP: ffffc90000d47b38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8801fac34400
R13: ffff8801fac34400 R14: ffffc90000d47ce8 R15: ffff88020f623000
FS:  0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000578 CR3: 000000000301e006 CR4: 00000000001606e0
Call Trace:
 addrconf_ifdown+0x70e/0x780 net/ipv6/addrconf.c:3607
 addrconf_notify+0x86/0xd50 net/ipv6/addrconf.c:3514
 notifier_call_chain+0x41/0xc0 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+0x32/0x60 net/core/dev.c:1679
 call_netdevice_notifiers net/core/dev.c:1697 [inline]
 rollback_registered_many+0x330/0x490 net/core/dev.c:7288
 unregister_netdevice_many.part.117+0x17/0x90 net/core/dev.c:8330
 unregister_netdevice_many net/core/dev.c:8329 [inline]
 default_device_exit_batch+0x190/0x1b0 net/core/dev.c:8795
 ops_exit_list.isra.6+0x70/0x80 net/core/net_namespace.c:145
 cleanup_net+0x210/0x350 net/core/net_namespace.c:484
 process_one_work+0x288/0x7a0 kernel/workqueue.c:2112
 worker_thread+0x43/0x4d0 kernel/workqueue.c:2246
 kthread+0x149/0x170 kernel/kthread.c:238
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:524
Code: fe ff ff ff eb e4 bb f4 ff ff ff eb dd 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 54 53 48 89 fb e8 51 8a 01 ff 48 8b 03 <48> 8b 80 78 05 00 00 48 83 b8 18 02 00 00 00 74 3e e8 38 8a 01 
RIP: read_pnet include/net/net_namespace.h:270 [inline] RSP: ffffc90000d47b28
RIP: dev_net include/linux/netdevice.h:2041 [inline] RSP: ffffc90000d47b28
RIP: snmp6_unregister_dev+0x12/0x70 net/ipv6/proc.c:308 RSP: ffffc90000d47b28
CR2: 0000000000000578
---[ end trace d60795cec29c841c ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..