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: 12296 Comm: syz-executor6 Not tainted 4.16.0-rc2+ #234
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ipt_do_table+0x12ee/0x1950 net/ipv4/netfilter/ip_tables.c:334
RSP: 0018:ffff8801a25872d8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8801b7aa0b48 RCX: ffffffff84e1fd5d
RDX: 000000000000037d RSI: 0000000000000000 RDI: ffff8801b7aa0a72
RBP: ffff8801a25874e0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8801b7aa0a18 R15: ffff8801a2587458
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f77d5b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000209a2ff0 CR3: 00000001b8c1f002 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 iptable_filter_hook+0x65/0x80 net/ipv4/netfilter/iptable_filter.c:41
 nf_hook_entry_hookfn include/linux/netfilter.h:120 [inline]
 nf_hook_slow+0xba/0x1a0 net/netfilter/core.c:483
 nf_hook include/linux/netfilter.h:243 [inline]
 __ip_local_out+0x4c1/0xa30 net/ipv4/ip_output.c:113
 ip_local_out+0x2d/0x160 net/ipv4/ip_output.c:122
 ip_send_skb+0x3c/0xc0 net/ipv4/ip_output.c:1414
 udp_send_skb+0x351/0xc30 net/ipv4/udp.c:809
 udp_sendmsg+0xba0/0x2f70 net/ipv4/udp.c:1044
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:764
 sock_sendmsg_nosec net/socket.c:630 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:640
 SYSC_sendto+0x361/0x5c0 net/socket.c:1747
 SyS_sendto+0x40/0x50 net/socket.c:1715
 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fd9c79
RSP: 002b:00000000f77d509c EFLAGS: 00000286 ORIG_RAX: 0000000000000171
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00000000207b2000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000209a2ff0
RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 46 52 02 75 41 e8 73 0e 8f fc 8b 85 80 fe ff ff 8d 70 01 89 b5 00 ff ff ff 48 8b b5 88 fe ff ff 4c 8d 24 c6 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 0f 85 e8 01 00 00 8b 85 00 ff ff ff 4d 89 34 24 
RIP: ipt_do_table+0x12ee/0x1950 net/ipv4/netfilter/ip_tables.c:334 RSP: ffff8801a25872d8
---[ end trace e7245aba892c3e85 ]---