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: 8724 Comm: syz-executor2 Not tainted 4.13.0+ #68
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d8d381c0 task.stack: ffff8801c9508000
RIP: 0010:__ip_options_echo+0xea8/0x1430 net/ipv4/ip_options.c:143
RSP: 0018:ffff8801c950f628 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8801c950f928 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff84017dff RDI: 0000000000000004
RBP: ffff8801c950f6b8 R08: ffff8801c950f936 R09: ffffed00392a1f28
R10: 0000000000000003 R11: ffffed00392a1f27 R12: ffff8801c950f918
R13: ffff8801d326756c R14: 000000000000000f R15: 0000000000000018
FS:  00007f4ca688c700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 00000001dad64000 CR4: 00000000001406f0
DR0: 0000000020000010 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 ip_options_echo include/net/ip.h:574 [inline]
 ip_cmsg_recv_retopts net/ipv4/ip_sockglue.c:91 [inline]
 ip_cmsg_recv_offset+0xa17/0x1280 net/ipv4/ip_sockglue.c:207
 udp_recvmsg+0xe0b/0x1260 net/ipv4/udp.c:1641
 inet_recvmsg+0x14c/0x5f0 net/ipv4/af_inet.c:793
 sock_recvmsg_nosec net/socket.c:792 [inline]
 sock_recvmsg+0xc9/0x110 net/socket.c:799
 SYSC_recvfrom+0x2dc/0x570 net/socket.c:1788
 SyS_recvfrom+0x40/0x50 net/socket.c:1760
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x451e59
RSP: 002b:00007f4ca688bc08 EFLAGS: 00000216 ORIG_RAX: 000000000000002d
RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 0000000000451e59
RDX: 0000000000000000 RSI: 0000000020bc0000 RDI: 0000000000000006
RBP: 0000000000000082 R08: 00000000200c0ff0 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004b7d9c
R13: 00000000ffffffff R14: 0000000020f08000 R15: 0000000000001000
Code: f6 c1 01 0f 85 a5 01 00 00 48 89 4d b8 e8 31 e9 6b fd 48 8b 4d b8 48 b8 00 00 00 00 00 fc ff df 48 83 e1 fe 48 89 ca 48 c1 ea 03 <80> 3c 02 00 0f 85 41 02 00 00 48 8b 09 48 b8 00 00 00 00 00 fc 
RIP: __ip_options_echo+0xea8/0x1430 net/ipv4/ip_options.c:143 RSP: ffff8801c950f628
---[ end trace e88e95efd9405754 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..