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: 0 PID: 25330 Comm: syz-executor.0 Not tainted 4.14.170-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888033a42000 task.stack: ffff8881fc3b0000 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:ffff8881fc3b6ea0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8881fc3b7028 RCX: 1ffffffff1166044 RDX: 0000000000000000 RSI: ffffffff85474c52 RDI: ffffffff88b30220 RBP: ffff8881fc3b6fc8 R08: 0000000000000000 R09: ffff888033a428f0 R10: ffff888033a428d0 R11: ffff888033a42000 R12: 0000000000000000 R13: 0000000000000018 R14: ffff8881fc3b704e R15: ffff8881fc3b7078 FS: 00007f8987cc0700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ca35000 CR3: 000000002f817000 CR4: 00000000001426f0 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: 0033:0x45c6c9 RSP: 002b:00007f8987cbfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8987cc06d4 RCX: 000000000045c6c9 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008fe R14: 00000000004cb801 R15: 000000000076bf2c Code: 48 c1 e9 03 80 3c 11 00 0f 85 91 14 00 00 4a 8b 14 e5 60 01 b3 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: ffff8881fc3b6ea0 RIP: __nf_nat_l4proto_find net/netfilter/nf_nat_core.c:54 [inline] RSP: ffff8881fc3b6ea0 RIP: get_unique_tuple+0x230/0x19e0 net/netfilter/nf_nat_core.c:313 RSP: ffff8881fc3b6ea0 ---[ end trace 138d38560ed5aede ]---