------------[ cut here ]------------ WARNING: CPU: 1 PID: 21 at net/core/flow_dissector.c:1027 __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 Modules linked in: CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 42400005 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 lr : __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 sp : ffff80001cc15f40 x29: ffff80001cc164f0 x28: ffff0000f8347940 x27: 0000000000000002 x26: ffff80001cc16270 x25: dfff800000000000 x24: 0000000000000000 x23: 1ffff00002a72a3c x22: 1ffff00002a72a3c x21: ffff8000153951dc x20: 0000000000000000 x19: ffff700003982c18 x18: 1fffe00033e7457e x17: 0000000000420056 x16: ffff800011b9ea98 x15: 0000000000000000 x14: 000000000000000a x13: 1ffff00002a72071 x12: 000000006d4fe494 x11: ff0080000fee481c x10: 0000000000000000 x9 : ffff80000fee481c x8 : ffff0000c0a59c00 x7 : ffff80000feeb654 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff8000121f22c0 x0 : 0000000000000001 Call trace: __skb_flow_dissect+0x91c/0x5898 net/core/flow_dissector.c:1022 skb_flow_dissect_flow_keys include/linux/skbuff.h:1531 [inline] ___skb_get_hash+0x7c/0x5e0 net/core/flow_dissector.c:1713 __skb_get_hash+0xb8/0x22c net/core/flow_dissector.c:1778 skb_get_hash include/linux/skbuff.h:1573 [inline] nft_trace_init+0x190/0x36c net/netfilter/nf_tables_trace.c:292 nft_do_chain+0x12d4/0x1364 net/netfilter/nf_tables_core.c:243 nft_do_chain_ipv4+0x128/0x1e8 net/netfilter/nft_chain_filter.c:23 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xc8/0x208 net/netfilter/core.c:614 nf_hook+0x1d0/0x338 include/linux/netfilter.h:257 __ip_local_out+0x4b8/0x5fc net/ipv4/ip_output.c:115 ip_local_out+0x3c/0x15c net/ipv4/ip_output.c:124 synproxy_send_tcp+0x388/0x540 net/netfilter/nf_synproxy_core.c:443 synproxy_send_client_synack+0x65c/0xb30 net/netfilter/nf_synproxy_core.c:488 nft_synproxy_eval_v4+0x16c/0x278 net/netfilter/nft_synproxy.c:58 nft_synproxy_do_eval+0x2d8/0x4a4 net/netfilter/nft_synproxy.c:140 nft_synproxy_eval+0x34/0x48 net/netfilter/nft_synproxy.c:246 expr_call_ops_eval net/netfilter/nf_tables_core.c:214 [inline] nft_do_chain+0x44c/0x1364 net/netfilter/nf_tables_core.c:264 nft_do_chain_inet+0x20c/0x2ec net/netfilter/nft_chain_filter.c:161 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xc8/0x208 net/netfilter/core.c:614 nf_hook include/linux/netfilter.h:257 [inline] NF_HOOK+0x1d0/0x36c include/linux/netfilter.h:300 ip_local_deliver+0x120/0x190 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:463 [inline] ip_rcv_finish+0x220/0x24c net/ipv4/ip_input.c:449 NF_HOOK+0x2dc/0x36c include/linux/netfilter.h:302 ip_rcv+0x7c/0x9c net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5619 [inline] __netif_receive_skb+0xd0/0x2b0 net/core/dev.c:5733 process_backlog+0x42c/0x748 net/core/dev.c:6061 __napi_poll+0xb8/0x3f4 net/core/dev.c:6628 napi_poll net/core/dev.c:6695 [inline] net_rx_action+0x52c/0xb5c net/core/dev.c:6809 handle_softirqs+0x318/0xc90 kernel/softirq.c:596 run_ksoftirqd+0x7c/0x2ac kernel/softirq.c:968 smpboot_thread_fn+0x4e8/0x960 kernel/smpboot.c:164 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 14007231 hardirqs last enabled at (14007230): [] __local_bh_enable_ip+0x1f8/0x37c kernel/softirq.c:426 hardirqs last disabled at (14007231): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (14007088): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (14007088): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (14007093): [] run_ksoftirqd+0x7c/0x2ac kernel/softirq.c:968 ---[ end trace 0000000000000000 ]---