syzbot

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kernel BUG at net/netfilter/nf_conntrack_core.c:570!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5704 Comm: syz.3.409 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:nf_ct_del_from_dying_or_unconfirmed_list net/netfilter/nf_conntrack_core.c:570 [inline]
RIP: 0010:__nf_conntrack_confirm+0x10ea/0x10f0 net/netfilter/nf_conntrack_core.c:1207
Code: e9 b1 fc ff ff e8 f6 10 e5 f8 48 c7 c7 18 f1 05 8e 48 c7 c6 00 dd a3 8b 4c 89 ea e8 10 1c 96 fb e9 a5 f1 ff ff e8 d6 10 e5 f8 <0f> 0b 0f 1f 40 00 55 41 57 41 56 41 55 41 54 53 49 89 fc 49 bd 00
RSP: 0018:ffffc90000dd06d0 EFLAGS: 00010246
RAX: ffffffff889b316a RBX: 0000000000000000 RCX: ffff888025c83b80
RDX: 0000000000000100 RSI: 0000000000000004 RDI: ffffc90000dd0640
RBP: dffffc0000000000 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffffffff96e512c0
R13: ffffe8ffffc26f50 R14: ffff8880610edcd0 R15: 0000000000000000
FS:  0000555580077500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c42822b CR3: 0000000053356000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 nf_conntrack_confirm include/net/netfilter/nf_conntrack_core.h:62 [inline]
 nf_confirm+0x308/0x420 net/netfilter/nf_conntrack_proto.c:154
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xae/0x1e0 net/netfilter/core.c:584
 nf_hook include/linux/netfilter.h:257 [inline]
 NF_HOOK+0x26b/0x410 include/linux/netfilter.h:300
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5524 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5638
 process_backlog+0x363/0x7f0 net/core/dev.c:6515
 __napi_poll+0xc7/0x440 net/core/dev.c:7074
 napi_poll net/core/dev.c:7141 [inline]
 net_rx_action+0x617/0xda0 net/core/dev.c:7231
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 do_softirq+0x162/0x240 kernel/softirq.c:459
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1b1/0x1f0 kernel/softirq.c:383
 rcu_read_unlock_bh include/linux/rcupdate.h:809 [inline]
 ip_finish_output2+0xdf1/0x11a0 net/ipv4/ip_output.c:229
 dst_output include/net/dst.h:452 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0x11e7/0x1c30 net/ipv4/ip_output.c:532
 __tcp_transmit_skb+0x1ee1/0x3810 net/ipv4/tcp_output.c:1404
 tcp_fin+0x112/0x530 net/ipv4/tcp_input.c:4468
 tcp_data_queue+0x856/0x6dd0 net/ipv4/tcp_input.c:5131
 tcp_rcv_state_process+0x1b8c/0x4470 net/ipv4/tcp_input.c:6715
 tcp_v4_do_rcv+0x64b/0x970 net/ipv4/tcp_ipv4.c:1753
 sk_backlog_rcv include/net/sock.h:1061 [inline]
 __release_sock+0x198/0x4b0 net/core/sock.c:2727
 __tcp_close+0x58a/0xee0 net/ipv4/tcp.c:2845
 tcp_close+0x24/0x110 net/ipv4/tcp.c:2922
 inet_release+0x174/0x1f0 net/ipv4/af_inet.c:432
 __sock_release net/socket.c:649 [inline]
 sock_close+0xcd/0x230 net/socket.c:1336
 __fput+0x3fe/0x8e0 fs/file_table.c:311
 task_work_run+0x129/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0x80 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4879e8a169
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:00007ffe56cc3528 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f487a0b3ba0 RCX: 00007f4879e8a169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f487a0b3ba0 R08: 00000000000001f8 R09: 0000001c56cc381f
R10: 00007f487a0b3ac0 R11: 0000000000000246 R12: 00000000000352b5
R13: 00007f487a0b2080 R14: ffffffffffffffff R15: 00007ffe56cc3640
 </TASK>
Modules linked in:
---[ end trace 03715d264cf8f24c ]---
RIP: 0010:nf_ct_del_from_dying_or_unconfirmed_list net/netfilter/nf_conntrack_core.c:570 [inline]
RIP: 0010:__nf_conntrack_confirm+0x10ea/0x10f0 net/netfilter/nf_conntrack_core.c:1207
Code: e9 b1 fc ff ff e8 f6 10 e5 f8 48 c7 c7 18 f1 05 8e 48 c7 c6 00 dd a3 8b 4c 89 ea e8 10 1c 96 fb e9 a5 f1 ff ff e8 d6 10 e5 f8 <0f> 0b 0f 1f 40 00 55 41 57 41 56 41 55 41 54 53 49 89 fc 49 bd 00
RSP: 0018:ffffc90000dd06d0 EFLAGS: 00010246
RAX: ffffffff889b316a RBX: 0000000000000000 RCX: ffff888025c83b80
RDX: 0000000000000100 RSI: 0000000000000004 RDI: ffffc90000dd0640
RBP: dffffc0000000000 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffffffff96e512c0
R13: ffffe8ffffc26f50 R14: ffff8880610edcd0 R15: 0000000000000000
FS:  0000555580077500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c42822b CR3: 0000000053356000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400