audit: type=1400 audit(1519870940.220:8): avc:  denied  { dac_override } for  pid=3784 comm="syz-executor0" capability=1  scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
------------[ cut here ]------------
WARNING: CPU: 1 PID: 32 at net/xfrm/xfrm_state.c:2167 xfrm_state_fini+0x2a0/0x340 net/xfrm/xfrm_state.c:2167
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 32 Comm: kworker/u4:2 Not tainted 4.9.85-g6e463bb #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
 ffff8801d95f7938 ffffffff81d955d9 ffffffff83a480c0 ffff8801d95f7a10
 ffffffff83f43300 ffffffff833df440 0000000000000009 ffff8801d95f7a00
 ffffffff8142f571 0000000041b58ab3 ffffffff8418b388 ffffffff8142f3b5
Call Trace:
 [<ffffffff81d955d9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d955d9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142f571>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff811311c4>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff8113142c>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff833df440>] xfrm_state_fini+0x2a0/0x340 net/xfrm/xfrm_state.c:2167
 [<ffffffff833be43d>] xfrm_net_exit+0x2d/0x30 net/xfrm/xfrm_policy.c:3066
 [<ffffffff82f1b8de>] ops_exit_list.isra.4+0xae/0x150 net/core/net_namespace.c:136
 [<ffffffff82f1e79d>] cleanup_net+0x31d/0x610 net/core/net_namespace.c:454
 [<ffffffff811898a0>] process_one_work+0x7e0/0x1610 kernel/workqueue.c:2092
 [<ffffffff8118a7b0>] worker_thread+0xe0/0x10d0 kernel/workqueue.c:2226
 [<ffffffff8119a7bd>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff838b55ac>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:374
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..