[ 2.088706] ip (255) used greatest stack depth: 12136 bytes left [ 2.706077] ------------[ cut here ]------------ [ 2.706150] refcount_t: underflow; use-after-free. [ 2.706203] WARNING: CPU: 3 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.706279] Modules linked in: [ 2.706316] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.706393] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.706443] Workqueue: netns cleanup_net [ 2.706483] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.706522] Code: 9e 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 95 9e 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 [ 2.706662] RSP: 0018:ffff9bb68024fd50 EFLAGS: 00010286 [ 2.706700] RAX: 0000000000000000 RBX: ffff9bb68024fd60 RCX: 00000000ffffdfff [ 2.706767] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.706823] RBP: ffff9bb68024f858 R08: ffffffff9f15ba28 R09: 00000000ffffdfff [ 2.706894] R10: ffffffff9f07ba40 R11: ffffffff9f12ba40 R12: dead000000000122 [ 2.706957] R13: 00000000fffb7634 R14: 0000000000000001 R15: ffff8cbf8684d000 [ 2.707023] FS: 0000000000000000(0000) GS:ffff8cc01f511000(0000) knlGS:0000000000000000 [ 2.707098] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.707161] CR2: 00007f0ff6431000 CR3: 000000003a246004 CR4: 0000000000772ef0 [ 2.707222] PKRU: 55555554 [ 2.707246] Call Trace: [ 2.707268] [ 2.707291] netdev_run_todo+0x21a/0x550 [ 2.707329] ops_undo_list+0x1e3/0x1f0 [ 2.707369] cleanup_net+0x1b7/0x300 [ 2.707413] process_one_work+0x162/0x380 [ 2.707460] worker_thread+0x299/0x3c0 [ 2.707495] ? rescuer_thread+0x4c0/0x4c0 [ 2.707535] kthread+0x101/0x1f0 [ 2.707571] ? kthreads_online_cpu+0x110/0x110 [ 2.707618] ? kthreads_online_cpu+0x110/0x110 [ 2.707662] ret_from_fork+0x11c/0x140 [ 2.707715] ? kthreads_online_cpu+0x110/0x110 [ 2.707762] ret_from_fork_asm+0x11/0x20 [ 2.707811] [ 2.707835] ---[ end trace 0000000000000000 ]---