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: 1 PID: 5960 Comm: syz-executor2 Not tainted 4.16.0-rc2+ #236
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:ffff8801b6476de8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8801b4490fb8 RCX: ffffffff84b78e5d
RDX: 00000000000003b4 RSI: 0000000000000000 RDI: ffff8801b4490e5a
RBP: ffff8801b6476ff0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8801b4490e00 R15: ffff8801b6476f68
FS:  00007f2684703700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c000 CR3: 00000001b403c003 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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+0x666/0xc30 net/ipv4/udp.c:809
 udp_push_pending_frames+0x4e/0xe0 net/ipv4/udp.c:837
 udp_sendmsg+0x21b3/0x2f70 net/ipv4/udp.c:1076
 udpv6_sendmsg+0x1a79/0x3400 net/ipv6/udp.c:1161
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:639
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2047
 __sys_sendmsg+0xe5/0x210 net/socket.c:2081
 SYSC_sendmsg net/socket.c:2092 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2088
 do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x453da9
RSP: 002b:00007f2684702c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f26847036d4 RCX: 0000000000453da9
RDX: 0000000000000000 RSI: 0000000020022000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004a6 R14: 00000000006f7030 R15: 0000000000000000
Code: 46 52 02 75 41 e8 73 7d b9 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: ffff8801b6476de8
---[ end trace 3b95e7f1a11f4637 ]---