kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 14420 Comm: syz-executor0 Not tainted 4.15.0-rc5+ #178
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:skb_segment+0x68a/0x3090 net/core/skbuff.c:3567
RSP: 0018:ffff8801ce52eab0 EFLAGS: 00010202
RAX: 0000000000000010 RBX: 0000000000000000 RCX: ffffffff8431bbc5
RDX: 0000000000000292 RSI: ffffc90002da1000 RDI: 0000000000000080
RBP: ffff8801ce52ed60 R08: 0000000000000048 R09: 0000000000000000
R10: ffff8801ce52ede8 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8801ca22ebc0 R15: ffff8801ca22ebc0
FS:  00007fa27e389700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000014e8cd8 CR3: 00000001c45c5001 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sctp_gso_segment+0x222/0x8b0 net/sctp/offload.c:72
 inet_gso_segment+0x61e/0x11e0 net/ipv4/af_inet.c:1289
 skb_mac_gso_segment+0x34e/0x670 net/core/dev.c:2748
 __skb_gso_segment+0x363/0x810 net/core/dev.c:2821
 skb_gso_segment include/linux/netdevice.h:4000 [inline]
 validate_xmit_skb+0x4c5/0xaf0 net/core/dev.c:3074
 __dev_queue_xmit+0xed8/0x2b50 net/core/dev.c:3513
 dev_queue_xmit+0x17/0x20 net/core/dev.c:3554
 packet_snd net/packet/af_packet.c:2944 [inline]
 packet_sendmsg+0x3aed/0x60b0 net/packet/af_packet.c:2969
 sock_sendmsg_nosec net/socket.c:628 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:638
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2018
 __sys_sendmsg+0xe5/0x210 net/socket.c:2052
 SYSC_sendmsg net/socket.c:2063 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2059
 entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x452ac9
RSP: 002b:00007fa27e388c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa27e389700 RCX: 0000000000452ac9
RDX: 0000000000000000 RSI: 000000002095afc8 RDI: 0000000000000013
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000a2f7ef R14: 00007fa27e3899c0 R15: 0000000000000000
Code: b5 28 fe ff ff 39 b5 2c fe ff ff 0f 8f a3 00 00 00 e8 5b 4f 3e fd 48 8b 85 40 fe ff ff 48 8d b8 80 00 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 
RIP: skb_segment+0x68a/0x3090 net/core/skbuff.c:3567 RSP: ffff8801ce52eab0
---[ end trace f9ed90395d3393db ]---