[ 1.971564] ip (260) used greatest stack depth: 12136 bytes left [ 2.310193] ------------[ cut here ]------------ [ 2.310262] refcount_t: underflow; use-after-free. [ 2.310311] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.310371] Modules linked in: [ 2.310400] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.310467] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.310510] Workqueue: netns cleanup_net [ 2.310545] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.310585] Code: a4 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 b5 a4 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 [ 2.310722] RSP: 0018:ffffa3f680257d50 EFLAGS: 00010286 [ 2.310756] RAX: 0000000000000000 RBX: ffffa3f680257d60 RCX: 00000000ffffdfff [ 2.310806] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.310864] RBP: ffffa3f680257858 R08: ffffffffa535ba28 R09: 00000000ffffdfff [ 2.310920] R10: ffffffffa527ba40 R11: ffffffffa532ba40 R12: dead000000000122 [ 2.310973] R13: 00000000fffb74a8 R14: 0000000000000001 R15: ffff96a20602a000 [ 2.311025] FS: 0000000000000000(0000) GS:ffff96a299191000(0000) knlGS:0000000000000000 [ 2.311081] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.311147] CR2: 0000558e0cebfdec CR3: 000000000309b001 CR4: 0000000000772ef0 [ 2.311206] PKRU: 55555554 [ 2.311229] Call Trace: [ 2.311247] [ 2.311269] netdev_run_todo+0x21a/0x550 [ 2.311301] ops_undo_list+0x1e3/0x1f0 [ 2.311332] cleanup_net+0x1b7/0x300 [ 2.311362] process_one_work+0x162/0x380 [ 2.311398] worker_thread+0x299/0x3c0 [ 2.311429] ? rescuer_thread+0x4c0/0x4c0 [ 2.311460] kthread+0x101/0x1f0 [ 2.311491] ? kthreads_online_cpu+0x110/0x110 [ 2.311531] ? kthreads_online_cpu+0x110/0x110 [ 2.311579] ret_from_fork+0x11c/0x140 [ 2.311624] ? kthreads_online_cpu+0x110/0x110 [ 2.311660] ret_from_fork_asm+0x11/0x20 [ 2.311699] [ 2.311717] ---[ end trace 0000000000000000 ]---