netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'.
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: 25875 Comm: syz-executor0 Not tainted 4.15.0-rc7-mm1+ #56
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_info+0x17d/0x690 net/ipv6/netfilter/ip6_tables.c:992
RSP: 0018:ffff8801d42d78f0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8801a8ba40c0 RCX: ffffffff84ad71c8
RDX: 0000000000000023 RSI: ffffc90001c6f000 RDI: 0000000000000118
RBP: ffff8801d42d7a80 R08: 1ffff1003a85ae55 R09: 0000000000000000
R10: ffffffff87f50f60 R11: 0000000000000000 R12: ffff8801d42d7a58
R13: 1ffff1003a85af23 R14: 0000000000000100 R15: ffff8801d42d7c70
FS:  00007f42fa95d700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e91ff0 CR3: 00000001c351f004 CR4: 00000000001626f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 do_arpt_get_ctl+0x2a9/0xa00 net/ipv4/netfilter/arp_tables.c:1481
 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
 nf_getsockopt+0x6a/0xc0 net/netfilter/nf_sockopt.c:122
 ip_getsockopt+0x15c/0x220 net/ipv4/ip_sockglue.c:1573
 udp_getsockopt+0x45/0x80 net/ipv4/udp.c:2460
 ipv6_getsockopt+0xf3/0x2e0 net/ipv6/ipv6_sockglue.c:1363
 tcp_getsockopt+0x82/0xd0 net/ipv4/tcp.c:3326
 sock_common_getsockopt+0x95/0xd0 net/core/sock.c:2937
 SYSC_getsockopt net/socket.c:1854 [inline]
 SyS_getsockopt+0x178/0x340 net/socket.c:1836
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x452cf9
RSP: 002b:00007f42fa95cc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452cf9
RDX: 0000000000000060 RSI: 0000000000000000 RDI: 0000000000000014
RBP: 00000000000003d0 R08: 0000000020d23000 R09: 0000000000000000
R10: 00000000201e3000 R11: 0000000000000212 R12: 00000000006f3c20
R13: 00000000ffffffff R14: 00007f42fa95d6d4 R15: 0000000000000000
Code: bf ff 48 3d 00 f0 ff ff 49 89 c6 0f 87 cb 03 00 00 e8 48 26 c3 fc 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e0 04 00 00 49 8b 4e 18 49 8d 5c 24 80 48 89 
RIP: get_info+0x17d/0x690 net/ipv6/netfilter/ip6_tables.c:992 RSP: ffff8801d42d78f0
---[ end trace b77a61d9a29a9ee2 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..