------------[ cut here ]------------
!(ct != NULL && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED))
WARNING: net/netfilter/xt_nat.c:154 at xt_dnat_target_v2+0x97/0xc0 net/netfilter/xt_nat.c:153, CPU#1: syz.0.345/7207
Modules linked in:
CPU: 1 UID: 0 PID: 7207 Comm: syz.0.345 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:xt_dnat_target_v2+0x97/0xc0 net/netfilter/xt_nat.c:153
Code: 74 22 41 83 e7 07 41 83 c7 fd bf fe ff ff ff 44 89 fe e8 fc 2b 90 f7 41 83 ff fe 72 25 e8 e1 26 90 f7 eb 09 e8 da 26 90 f7 90 <0f> 0b 90 4c 89 f7 48 89 de ba 01 00 00 00 5b 41 5e 41 5f e9 21 17
RSP: 0018:ffffc90000a07de0 EFLAGS: 00010246
RAX: ffffffff8a38ef14 RBX: ffff888075cf1218 RCX: ffff8880682dddc0
RDX: 8000000000000100 RSI: 0000000000000100 RDI: 00000000fffffffe
RBP: ffffc90000a07ed0 R08: 0000000000000100 R09: 0000000000000000
R10: ffffc90000a080b0 R11: ffffffff8a38ee60 R12: ffffffff919e5238
R13: 1ffff92000140fc4 R14: ffff88807c1cd500 R15: 0000000000000001
FS: 00007f5ebd27f6c0(0000) GS:ffff88812371f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c28ff29 CR3: 000000007b9dc000 CR4: 00000000003526f0
Call Trace:
nft_target_eval_xt+0x1ad/0x2b0 net/netfilter/nft_compat.c:100
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x48d/0x1b10 net/netfilter/nf_tables_core.c:285
nft_nat_do_chain+0x360/0x4b0 net/netfilter/nft_chain_nat.c:32
nf_nat_inet_fn+0x5de/0xb50 net/netfilter/nf_nat_core.c:931
nf_nat_ipv4_fn net/netfilter/nf_nat_proto.c:583 [inline]
nf_nat_ipv4_local_fn+0x18c/0x570 net/netfilter/nf_nat_proto.c:738
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook+0x22a/0x3a0 include/linux/netfilter.h:280
__ip_local_out+0x558/0x6a0 net/ipv4/ip_output.c:120
ip_local_out+0x2a/0x190 net/ipv4/ip_output.c:129
nf_send_reset+0xd8d/0x1530 net/ipv4/netfilter/nf_reject_ipv4.c:339
nft_reject_ipv4_eval+0xf6/0x230 net/ipv4/netfilter/nft_reject_ipv4.c:30
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x48d/0x1b10 net/netfilter/nf_tables_core.c:285
nft_do_chain_ipv4+0x195/0x290 net/netfilter/nft_chain_filter.c:24
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:323
__netif_receive_skb_one_core net/core/dev.c:6433 [inline]
__netif_receive_skb net/core/dev.c:6546 [inline]
process_backlog+0xa6b/0x18b0 net/core/dev.c:6897
__napi_poll+0xaa/0x330 net/core/dev.c:7977
napi_poll net/core/dev.c:8040 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8197
handle_softirqs+0x265/0x8d0 kernel/softirq.c:669
do_softirq+0x77/0xd0 kernel/softirq.c:569
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline]
__dev_queue_xmit+0x1efb/0x3920 net/core/dev.c:5121
dev_queue_xmit include/linux/netdevice.h:3485 [inline]
neigh_hh_output include/net/neighbour.h:538 [inline]
neigh_output include/net/neighbour.h:552 [inline]
ip_finish_output2+0xbda/0x10b0 net/ipv4/ip_output.c:236
NF_HOOK_COND include/linux/netfilter.h:314 [inline]
ip_output+0x29f/0x450 net/ipv4/ip_output.c:437
__ip_queue_xmit+0x10df/0x1b10 net/ipv4/ip_output.c:533
__tcp_transmit_skb+0x2d06/0x47b0 net/ipv4/tcp_output.c:1773
tcp_transmit_skb net/ipv4/tcp_output.c:1790 [inline]
tcp_connect+0x1a7e/0x4990 net/ipv4/tcp_output.c:4451
tcp_v4_connect+0x1264/0x1b20 net/ipv4/tcp_ipv4.c:348
__inet_stream_connect+0x28c/0xf50 net/ipv4/af_inet.c:684
inet_stream_connect+0x66/0xa0 net/ipv4/af_inet.c:755
connect_socket net/socket.c:2143 [inline]
__sys_connect_file net/socket.c:2168 [inline]
__sys_connect+0x316/0x450 net/socket.c:2185
__do_sys_connect net/socket.c:2191 [inline]
__se_sys_connect net/socket.c:2188 [inline]
__x64_sys_connect+0x7a/0x90 net/socket.c:2188
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5ebc39f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5ebd27f028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f5ebc625fa0 RCX: 00007f5ebc39f559
RDX: 0000000000000010 RSI: 0000200000000c80 RDI: 000000000000000b
RBP: 00007f5ebc436b50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5ebc626038 R14: 00007f5ebc625fa0 R15: 00007fff6aaf0848