general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 17375 Comm: syz-executor.3 Not tainted 4.14.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888087a20140 task.stack: ffff88808b808000
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:__nf_nat_l4proto_find net/netfilter/nf_nat_core.c:54 [inline]
RIP: 0010:get_unique_tuple+0x230/0x19e0 net/netfilter/nf_nat_core.c:313
RSP: 0018:ffff88808b80ef18 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88808b80f090 RCX: 1ffffffff1126045
netlink: 104 bytes leftover after parsing attributes in process `syz-executor.2'.
RDX: 0000000000000000 RSI: ffffffff8526c6d2 RDI: ffffffff88930228
RBP: ffff88808b80f040 R08: 0000000000000000 R09: 0000000000020012
R10: ffff888087a20a10 R11: ffff888087a20140 R12: 0000000000000000
R13: 00000000000000d1 R14: ffff88808b80f0b6 R15: ffff88808b80f0e0
FS:  00007f0f0058f700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020315000 CR3: 000000009f6b2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
netlink: 104 bytes leftover after parsing attributes in process `syz-executor.2'.
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nf_nat_setup_info+0x17b/0x710 net/netfilter/nf_nat_core.c:407
 __nf_nat_alloc_null_binding+0x13f/0x180 net/netfilter/nf_nat_core.c:466
 nfnetlink_parse_nat_setup+0x30c/0x370 net/netfilter/nf_nat_core.c:782
 ctnetlink_parse_nat_setup+0x70/0x490 net/netfilter/nf_conntrack_netlink.c:1421
 ctnetlink_setup_nat net/netfilter/nf_conntrack_netlink.c:1491 [inline]
 ctnetlink_create_conntrack+0x437/0x1040 net/netfilter/nf_conntrack_netlink.c:1840
 ctnetlink_new_conntrack+0x460/0xc30 net/netfilter/nf_conntrack_netlink.c:1964
 nfnetlink_rcv_msg+0xa08/0xc00 net/netfilter/nfnetlink.c:214
 netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433
 nfnetlink_rcv+0x1ab/0x1650 net/netfilter/nfnetlink.c:515
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xc5/0x100 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c889
RSP: 002b:00007f0f0058ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f0f0058f6d4 RCX: 000000000045c889
RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000005
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000095c R14: 00000000004cc13b R15: 000000000076bf0c
Code: 48 c1 e9 03 80 3c 11 00 0f 85 91 14 00 00 4a 8b 14 e5 a0 fb 92 88 4c 8d 24 c2 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 81 14 00 00 49 8b 04 24 48 89 85 30 ff ff ff 
RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffff88808b80ef18
RIP: __nf_nat_l4proto_find net/netfilter/nf_nat_core.c:54 [inline] RSP: ffff88808b80ef18
RIP: get_unique_tuple+0x230/0x19e0 net/netfilter/nf_nat_core.c:313 RSP: ffff88808b80ef18
---[ end trace 4fd21e345313c053 ]---