IPVS: Creating netns size=2552 id=6
IPVS: Creating netns size=2552 id=7
IPVS: Creating netns size=2552 id=8
random: nonblocking pool is initialized
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6102 at net/xfrm/xfrm_policy.c:765 xfrm_policy_insert+0x60f/0xed0 net/xfrm/xfrm_policy.c:765()
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 6102 Comm: syz-executor0 Not tainted 4.4.130-g12ef385 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 6919c93cbc87b374 ffff8801d6b2f420 ffffffff81e0dc6d
 ffffffff83a43ec0 ffff8800b8c2e000 ffffffff83f22f20 0000000000000009
 00000000000002fd ffff8801d6b2f4e0 ffffffff81409ec4 0000000041b58ab3
Call Trace:
 [<ffffffff81e0dc6d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e0dc6d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81409ec4>] panic+0x19e/0x38d kernel/panic.c:112
 [<ffffffff8140a0e8>] warn_slowpath_common.cold.6+0x20/0x20 kernel/panic.c:455
 [<ffffffff81130049>] warn_slowpath_null+0x29/0x30 kernel/panic.c:492
 [<ffffffff833c5f9f>] xfrm_policy_insert+0x60f/0xed0 net/xfrm/xfrm_policy.c:765
 [<ffffffff833f7cf8>] xfrm_add_policy+0x248/0x500 net/xfrm/xfrm_user.c:1561
 [<ffffffff833f4436>] xfrm_user_rcv_msg+0x3d6/0x6c0 net/xfrm/xfrm_user.c:2544
 [<ffffffff830b86d5>] netlink_rcv_skb+0x145/0x370 net/netlink/af_netlink.c:2352
 [<ffffffff833f0fef>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2552
 [<ffffffff830b72a9>] netlink_unicast_kernel net/netlink/af_netlink.c:1270 [inline]
 [<ffffffff830b72a9>] netlink_unicast+0x4e9/0x700 net/netlink/af_netlink.c:1296
 [<ffffffff830b7c4b>] netlink_sendmsg+0x78b/0xc10 net/netlink/af_netlink.c:1850
 [<ffffffff82f1c3fc>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1c3fc>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1dec5>] ___sys_sendmsg+0x745/0x880 net/socket.c:1962
 [<ffffffff82f1ff66>] __sys_sendmsg+0xd6/0x190 net/socket.c:1996
 [<ffffffff82f2004d>] SYSC_sendmsg net/socket.c:2007 [inline]
 [<ffffffff82f2004d>] SyS_sendmsg+0x2d/0x50 net/socket.c:2003
 [<ffffffff838bf525>] entry_SYSCALL_64_fastpath+0x22/0x9e
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..