------------[ cut here ]------------
kernel BUG at net/netfilter/nf_conntrack_core.c:570!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 9910 Comm: syz.1.2039 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : nf_ct_del_from_dying_or_unconfirmed_list net/netfilter/nf_conntrack_core.c:570 [inline]
pc : __nf_conntrack_confirm+0xd2c/0xd98 net/netfilter/nf_conntrack_core.c:1207
lr : nf_ct_del_from_dying_or_unconfirmed_list net/netfilter/nf_conntrack_core.c:570 [inline]
lr : __nf_conntrack_confirm+0xd2c/0xd98 net/netfilter/nf_conntrack_core.c:1207
sp : ffff8000205a6f80
x29: ffff8000205a6ff0 x28: dfff800000000000 x27: fffffbffeff7c190
x26: ffff0000e8bf1cd0 x25: 0000000000000000 x24: ffff0000e8bf1c90
x23: ffff0000e8bf1c58 x22: 0000000000002097 x21: 0000000000000000
x20: ffff800014b71008 x19: ffff0000e8bf1cc0 x18: 0000000000000200
x17: 0000000000000002 x16: ffff800008305360 x15: 0000000000000003
x14: 1ffff0000296e06c x13: dfff800000000000 x12: 0000000000080000
x11: 000000000000129e x10: ffff800021be9000 x9 : 000000000000129f
x8 : ffff800010364600 x7 : ffff800010363b8c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008305490
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 nf_ct_del_from_dying_or_unconfirmed_list net/netfilter/nf_conntrack_core.c:570 [inline]
 __nf_conntrack_confirm+0xd2c/0xd98 net/netfilter/nf_conntrack_core.c:1207
 nf_conntrack_confirm include/net/netfilter/nf_conntrack_core.h:62 [inline]
 nf_confirm+0x37c/0x50c net/netfilter/nf_conntrack_proto.c:154
 ipv4_confirm+0xec/0x1d4 net/netfilter/nf_conntrack_proto.c:169
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xc8/0x1f4 net/netfilter/core.c:584
 nf_hook include/linux/netfilter.h:257 [inline]
 NF_HOOK+0x228/0x3d0 include/linux/netfilter.h:300
 ip_local_deliver+0x11c/0x190 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:453 [inline]
 ip_rcv_finish+0x22c/0x264 net/ipv4/ip_input.c:447
 NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:302
 ip_rcv+0x78/0x98 net/ipv4/ip_input.c:566
 __netif_receive_skb_one_core net/core/dev.c:5493 [inline]
 __netif_receive_skb+0x18c/0x400 net/core/dev.c:5607
 netif_receive_skb_internal net/core/dev.c:5693 [inline]
 netif_receive_skb+0x1e0/0x8c4 net/core/dev.c:5752
 tun_rx_batched+0x568/0x6e4
 tun_get_user+0x2320/0x3774 drivers/net/tun.c:1989
 tun_chr_write_iter+0xfc/0x20c drivers/net/tun.c:2019
 call_write_iter include/linux/fs.h:2174 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x884/0xb44 fs/read_write.c:594
 ksys_write+0x15c/0x26c fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: aa1903e2 96a0d0fa 17fffd3e 96057fab (d4210000) 
---[ end trace 136e4bf7bf861950 ]---