kernel BUG at ./include/linux/skbuff.h:2081!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 4010 Comm: syz-executor0 Not tainted 4.13.0-mm1+ #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c8ed8540 task.stack: ffff8801c93b0000
RIP: 0010:__skb_pull include/linux/skbuff.h:2081 [inline]
RIP: 0010:__ip6_make_skb+0x18cf/0x1f70 net/ipv6/ip6_output.c:1617
RSP: 0018:ffff8801c93b7530 EFLAGS: 00010297
RAX: ffff8801c8ed8540 RBX: 0000000000000028 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801c8ffd560
RBP: ffff8801c93b7740 R08: ffff8801c8800bfc R09: 0000000000000000
R10: ffff8801c93b7760 R11: 0000000000000000 R12: ffff8801c8800c08
R13: ffff8801c8800b80 R14: 0000000000002008 R15: dffffc0000000000
FS:  00007fade7f0d700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fade7eebdb8 CR3: 00000001c8ffc000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ip6_finish_skb include/net/ipv6.h:911 [inline]
 udp_v6_push_pending_frames+0x261/0x3a0 net/ipv6/udp.c:1102
 udpv6_sendmsg+0x2a2b/0x3380 net/ipv6/udp.c:1372
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:762
 sock_sendmsg_nosec net/socket.c:633 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:643
 SYSC_sendto+0x358/0x5a0 net/socket.c:1750
 SyS_sendto+0x40/0x50 net/socket.c:1718
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x451e59
RSP: 002b:00007fade7f0cc08 EFLAGS: 00000216 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000007180b0 RCX: 0000000000451e59
RDX: 0000000000000000 RSI: 0000000020f5b000 RDI: 0000000000000003
RBP: 0000000000000082 R08: 0000000020f5afe4 R09: 000000000000001c
R10: 0000000000000800 R11: 0000000000000216 R12: 00000000004baffc
R13: 00000000ffffffff R14: 0000000000000003 R15: 0000000000000029
Code: d2 75 fd e9 c5 e8 ff ff e8 4f d2 75 fd e9 4a ea ff ff 48 89 f7 e8 22 d2 75 fd e9 aa eb ff ff e8 b8 0d 41 fd 0f 0b e8 b1 0d 41 fd <0f> 0b 49 8d 45 78 4d 8d 45 7c 48 89 85 78 fe ff ff 49 8d 85 ba 
RIP: __skb_pull include/linux/skbuff.h:2081 [inline] RSP: ffff8801c93b7530
RIP: __ip6_make_skb+0x18cf/0x1f70 net/ipv6/ip6_output.c:1617 RSP: ffff8801c93b7530
---[ end trace 06fa0720e604334e ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..