------------[ cut here ]------------
WARNING: net/ipv6/xfrm6_tunnel.c:341 at xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341, CPU#0: kworker/u8:1/13
Modules linked in:
CPU: 0 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341
Code: 08 45 0f f8 4b 83 3c 2c 00 75 19 e8 ec 85 a9 f7 49 81 fd f8 07 00 00 74 1d e8 de 85 a9 f7 49 83 c5 08 eb c9 e8 d3 85 a9 f7 90 <0f> 0b 90 49 81 fd f8 07 00 00 75 e3 48 81 c3 00 08 00 00 45 31 f6
RSP: 0018:ffffc90000127890 EFLAGS: 00010293
RAX: ffffffff8a16d6dd RBX: ffff888023d64000 RCX: ffff88801ce90000
RDX: 0000000000000000 RSI: ffffffff8d7f7453 RDI: ffff888023d64000
RBP: ffffc90000127990 R08: ffffffff8f9dd677 R09: 1ffffffff1f3bace
R10: dffffc0000000000 R11: fffffbfff1f3bacf R12: ffff888023d64000
R13: 0000000000000000 R14: ffff888077f24780 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125d22000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3343385d58 CR3: 000000005ddd8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000004144
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ops_exit_list net/core/net_namespace.c:199 [inline]
 ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252
 cleanup_net+0x4d8/0x820 net/core/net_namespace.c:696
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>