netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor3'.
WARNING: CPU: 0 PID: 15971 at net/xfrm/xfrm_policy.c:761 xfrm_policy_insert+0x8cd/0x16d0 net/xfrm/xfrm_policy.c:761
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 15971 Comm: syz-executor3 Not tainted 4.18.0-rc7+ #171
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:xfrm_policy_insert+0x8cd/0x16d0 net/xfrm/xfrm_policy.c:761
Code: 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 0f 8c dd f9 ff ff 84 d2 0f 84 d5 f9 ff ff e8 ad 20 12 fc e9 cb f9 ff ff e8 d3 f3 d3 fb <0f> 0b 48 8b 85 e0 fe ff ff 0f b6 10 48 8b 85 f0 fe ff ff 83 e0 07 
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
RSP: 0018:ffff8801b9d4f240 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff8801b3a5cd80 RCX: ffffc90005e24000
RDX: 00000000000058e3 RSI: ffffffff85a8220d RDI: ffff8801b3a5cfa0
RBP: ffff8801b9d4f3c8 R08: ffff8801b1c26100 R09: ffffed0034dfe417
R10: ffffed0034dfe417 R11: ffff8801a6ff20bb R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801a1fdc480
 xfrm_add_policy+0x2c8/0x750 net/xfrm/xfrm_user.c:1642
 xfrm_user_rcv_msg+0x455/0x8b0 net/xfrm/xfrm_user.c:2650
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2454
 xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2658
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x5a0/0x760 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1908
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
 sock_sendmsg_nosec net/socket.c:640 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:650
 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2133
 __sys_sendmsg+0x11d/0x290 net/socket.c:2171
 __do_sys_sendmsg net/socket.c:2180 [inline]
 __se_sys_sendmsg net/socket.c:2178 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2178
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x456b29
Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007fe24273bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe24273c6d4 RCX: 0000000000456b29
RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000000000013
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d3578 R14: 00000000004c824f R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..