[    2.326814] ip (249) used greatest stack depth: 12376 bytes left
[    2.395675] ip (254) used greatest stack depth: 12136 bytes left
[    7.510187] ------------[ cut here ]------------
[    7.510264] refcount_t: underflow; use-after-free.
[    7.510318] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    7.510409] Modules linked in: nft_masq nft_chain_nat nf_nat nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables veth
[    7.510552] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    7.510629] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    7.510678] Workqueue: netns cleanup_net
[    7.510715] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    7.510753] Code: 8a e8 18 ed b9 ff 90 0f 0b 90 90 c3 80 3d d9 ea ea 00 00 75 89 c6 05 d0 ea ea 00 01 90 48 c7 c7 78 de f1 8a e8 f5 ec b9 ff 90 <0f> 0b 90 90 c3 80 3d b4 ea ea 00 00 0f 85 62 ff ff ff c6 05 a7 ea
[    7.510877] RSP: 0018:ffff9d000025fd50 EFLAGS: 00010286
[    7.510918] RAX: 0000000000000000 RBX: ffff9d000025fd60 RCX: 00000000ffffdfff
[    7.510974] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    7.511029] RBP: ffff9d000025f868 R08: ffffffff8b356d28 R09: 00000000ffffdfff
[    7.511081] R10: ffffffff8b276d40 R11: ffffffff8b326d40 R12: dead000000000122
[    7.511140] R13: 00000000fffb88f7 R14: 0000000000000001 R15: ffff889244ab1000
[    7.511200] FS:  0000000000000000(0000) GS:ffff8892f31d8000(0000) knlGS:0000000000000000
[    7.511259] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    7.511305] CR2: 00007f3eb3a5f000 CR3: 000000003ce41004 CR4: 0000000000772ef0
[    7.511357] PKRU: 55555554
[    7.511378] Call Trace:
[    7.511403]  <TASK>
[    7.511432]  netdev_run_todo+0x21a/0x550
[    7.511474]  ops_undo_list+0x1e3/0x1f0
[    7.511511]  cleanup_net+0x1b7/0x2b0
[    7.511543]  process_one_work+0x162/0x380
[    7.511580]  worker_thread+0x299/0x3c0
[    7.511611]  ? rescuer_thread+0x4c0/0x4c0
[    7.511642]  kthread+0x101/0x1f0
[    7.511673]  ? kthreads_online_cpu+0x110/0x110
[    7.511714]  ? kthreads_online_cpu+0x110/0x110
[    7.511753]  ret_from_fork+0x11c/0x140
[    7.511791]  ? kthreads_online_cpu+0x110/0x110
[    7.511830]  ret_from_fork_asm+0x11/0x20
[    7.511868]  </TASK>
[    7.511888] ---[ end trace 0000000000000000 ]---