kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 8818 Comm: syz-executor.3 Not tainted 4.14.169-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a0a50080 task.stack: ffff8880553b0000
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:ffff8880553b6ea0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8880553b7028 RCX: 1ffffffff1166052
RDX: 0000000040000000 RSI: ffffffff85474cd2 RDI: ffffffff88b30290
RBP: ffff8880553b6fc8 R08: 0000000000000000 R09: ffff8880a0a50970
R10: ffff8880a0a50950 R11: ffff8880a0a50080 R12: 0000000200000000
R13: 0000000000000066 R14: ffff8880553b704e R15: ffff8880553b7078
FS:  00007fc1a34e0700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f54953d7db8 CR3: 0000000086bbf000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nf_nat_setup_info+0x1bd/0x7f0 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+0x34a/0x3b0 net/netfilter/nf_nat_core.c:782
 ctnetlink_parse_nat_setup+0x76/0x4a0 net/netfilter/nf_conntrack_netlink.c:1421
 ctnetlink_setup_nat net/netfilter/nf_conntrack_netlink.c:1491 [inline]
 ctnetlink_create_conntrack+0x468/0x10c0 net/netfilter/nf_conntrack_netlink.c:1840
 ctnetlink_new_conntrack+0x4af/0xcc0 net/netfilter/nf_conntrack_netlink.c:1964
 nfnetlink_rcv_msg+0xa08/0xc00 net/netfilter/nfnetlink.c:214
 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432
 nfnetlink_rcv+0x1ab/0x1650 net/netfilter/nfnetlink.c:515
 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline]
 netlink_unicast+0x44d/0x650 net/netlink/af_netlink.c:1312
 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xce/0x110 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xb9/0x140 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2103
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b399
RSP: 002b:00007fc1a34dfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc1a34e06d4 RCX: 000000000045b399
RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000008
RBP: 000000000075c1c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000942 R14: 00000000004caa57 R15: 000000000075c1cc
Code: 48 c1 e9 03 80 3c 11 00 0f 85 91 14 00 00 4a 8b 14 e5 60 ff b2 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: ffff8880553b6ea0
RIP: __nf_nat_l4proto_find net/netfilter/nf_nat_core.c:54 [inline] RSP: ffff8880553b6ea0
RIP: get_unique_tuple+0x230/0x19e0 net/netfilter/nf_nat_core.c:313 RSP: ffff8880553b6ea0
A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check.
---[ end trace b59c29f4f70cc2c1 ]---