[    2.207306] ip (265) used greatest stack depth: 12136 bytes left
[    7.767128] ------------[ cut here ]------------
[    7.767192] refcount_t: underflow; use-after-free.
[    7.767247] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    7.767314] Modules linked in: cls_bpf sch_ingress
[    7.767358] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    7.767430] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    7.767480] Workqueue: netns cleanup_net
[    7.767518] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    7.767563] Code: 92 e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 f5 92 e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5
[    7.767691] RSP: 0018:ffffbbe080067d50 EFLAGS: 00010286
[    7.767732] RAX: 0000000000000000 RBX: ffffbbe080067d60 RCX: 00000000ffffdfff
[    7.767790] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    7.767850] RBP: ffffbbe080067858 R08: ffffffff9375ba28 R09: 00000000ffffdfff
[    7.767915] R10: ffffffff9367ba40 R11: ffffffff9372ba40 R12: dead000000000122
[    7.767975] R13: 00000000fffb89ef R14: 0000000000000001 R15: ffff9948853e5000
[    7.768028] FS:  0000000000000000(0000) GS:ffff99492ad91000(0000) knlGS:0000000000000000
[    7.768086] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    7.768136] CR2: 000055c199ffedec CR3: 000000000536e002 CR4: 0000000000772ef0
[    7.768195] PKRU: 55555554
[    7.768218] Call Trace:
[    7.768243]  <TASK>
[    7.768266]  netdev_run_todo+0x21a/0x550
[    7.768308]  ops_undo_list+0x1e3/0x1f0
[    7.768343]  cleanup_net+0x1b7/0x300
[    7.768373]  process_one_work+0x162/0x380
[    7.768411]  worker_thread+0x299/0x3c0
[    7.768443]  ? rescuer_thread+0x4c0/0x4c0
[    7.768474]  kthread+0x101/0x1f0
[    7.768508]  ? kthreads_online_cpu+0x110/0x110
[    7.768549]  ? kthreads_online_cpu+0x110/0x110
[    7.768590]  ret_from_fork+0x11c/0x140
[    7.768623]  ? kthreads_online_cpu+0x110/0x110
[    7.768664]  ret_from_fork_asm+0x11/0x20
[    7.768698]  </TASK>
[    7.768721] ---[ end trace 0000000000000000 ]---