syzbot

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WARNING: ./include/linux/skbuff.h:1165 at skb_dst_check_unset include/linux/skbuff.h:1164 [inline], CPU#0: syz.0.17/6049
WARNING: ./include/linux/skbuff.h:1165 at skb_dst_set include/linux/skbuff.h:1211 [inline], CPU#0: syz.0.17/6049
WARNING: ./include/linux/skbuff.h:1165 at nf_send_reset6+0xb3a/0xde0 net/ipv6/netfilter/nf_reject_ipv6.c:300, CPU#0: syz.0.17/6049
Modules linked in:
CPU: 0 UID: 0 PID: 6049 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:skb_dst_check_unset include/linux/skbuff.h:1164 [inline]
RIP: 0010:skb_dst_set include/linux/skbuff.h:1211 [inline]
RIP: 0010:nf_send_reset6+0xb3a/0xde0 net/ipv6/netfilter/nf_reject_ipv6.c:300
Code: 00 fc ff df 4c 8b 64 24 18 4c 89 e7 31 f6 e8 8d ff 1c ff e9 67 f6 ff ff e8 43 29 6f f7 31 ff 4c 89 e6 eb b1 e8 37 29 6f f7 90 <0f> 0b 90 e9 2f f8 ff ff e8 29 29 6f f7 90 0f 0b 90 e9 0f f9 ff ff
RSP: 0018:ffffc900000073c0 EFLAGS: 00010246
RAX: ffffffff8a51a599 RBX: 1ffff1100f568799 RCX: ffff8880323a8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007568 R08: ffff888011a2f043 R09: 1ffff11002345e08
R10: dffffc0000000000 R11: ffffed1002345e09 R12: ffff88807ab43cc8
R13: ffff88803335fb01 R14: 0000000000000000 R15: 0000000000000001
FS:  0000555575ebd500(0000) GS:ffff8881257c4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 000000007e2d2000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 nft_reject_inet_eval+0x32e/0x690 net/netfilter/nft_reject_inet.c:48
 expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
 nft_do_chain+0x40c/0x1920 net/netfilter/nf_tables_core.c:285
 nft_do_chain_inet+0x25d/0x340 net/netfilter/nft_chain_filter.c:161
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xc5/0x220 net/netfilter/core.c:623
 nf_hook include/linux/netfilter.h:273 [inline]
 NF_HOOK+0x206/0x3a0 include/linux/netfilter.h:316
 __netif_receive_skb_one_core net/core/dev.c:5991 [inline]
 __netif_receive_skb+0xd3/0x380 net/core/dev.c:6104
 process_backlog+0x60e/0x14f0 net/core/dev.c:6456
 __napi_poll+0xc4/0x360 net/core/dev.c:7506
 napi_poll net/core/dev.c:7569 [inline]
 net_rx_action+0x707/0xe30 net/core/dev.c:7696
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 do_softirq+0xec/0x180 kernel/softirq.c:480
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
 __dev_queue_xmit+0x1d79/0x3b50 net/core/dev.c:4752
 dev_queue_xmit include/linux/netdevice.h:3361 [inline]
 neigh_hh_output include/net/neighbour.h:531 [inline]
 neigh_output include/net/neighbour.h:545 [inline]
 ip6_finish_output2+0x11bc/0x16a0 net/ipv6/ip6_output.c:141
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ip6_xmit+0x107a/0x1840 net/ipv6/ip6_output.c:367
 inet6_csk_xmit+0x4db/0x780 net/ipv6/inet6_connection_sock.c:120
 __tcp_transmit_skb+0x1db8/0x3680 net/ipv4/tcp_output.c:1479
 tcp_transmit_skb net/ipv4/tcp_output.c:1497 [inline]
 tcp_send_syn_data net/ipv4/tcp_output.c:4069 [inline]
 tcp_connect+0x3068/0x4ef0 net/ipv4/tcp_output.c:4158
 tcp_v6_connect+0x11f7/0x1870 net/ipv6/tcp_ipv6.c:336
 __inet_stream_connect+0x2ab/0xe80 net/ipv4/af_inet.c:677
 tcp_sendmsg_fastopen+0x3a7/0x5e0 net/ipv4/tcp.c:1045
 tcp_sendmsg_locked+0x4d9b/0x5620 net/ipv4/tcp.c:1123
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1393
 sock_sendmsg_nosec net/socket.c:714 [inline]
 __sock_sendmsg+0xe5/0x270 net/socket.c:729
 __sys_sendto+0x3bd/0x520 net/socket.c:2228
 __do_sys_sendto net/socket.c:2235 [inline]
 __se_sys_sendto net/socket.c:2231 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2231
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb07718ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc1fc8ad48 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fb0773b5fa0 RCX: 00007fb07718ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fb077211e19 R08: 00002000000001c0 R09: 000000000000001c
R10: 0000000020008800 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb0773b5fa0 R14: 00007fb0773b5fa0 R15: 0000000000000006
 </TASK>