------------[ cut here ]------------
WARNING: CPU: 0 PID: 13 at net/ipv6/xfrm6_tunnel.c:341 xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341
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 10/25/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341
Code: b8 c7 17 f8 4b 83 3c 2c 00 75 19 e8 9c 05 b2 f7 49 81 fd f8 07 00 00 74 1d e8 8e 05 b2 f7 49 83 c5 08 eb c9 e8 83 05 b2 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: ffffffff8a0dfe0d RBX: ffff888023b78000 RCX: ffff88801ca88000
RDX: 0000000000000000 RSI: ffffffff8d70e261 RDI: ffff888023b78000
RBP: ffffc90000127990 R08: ffffffff8f7cea77 R09: 1ffffffff1ef9d4e
R10: dffffc0000000000 R11: fffffbfff1ef9d4f R12: ffff888023b78000
R13: 0000000000000000 R14: ffff88802396a480 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88812613b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd3456d286 CR3: 00000000407c8000 CR4: 00000000003526f0
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:695
 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>