[ 2.203915] ip (259) used greatest stack depth: 12168 bytes left [ 6.045173] ------------[ cut here ]------------ [ 6.045247] refcount_t: underflow; use-after-free. [ 6.045322] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 6.045410] Modules linked in: [ 6.045450] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 6.045540] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 6.045604] Workqueue: netns cleanup_net [ 6.045656] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 6.045713] Code: 9d 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 9d 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 [ 6.045896] RSP: 0018:ffffc3844025fd50 EFLAGS: 00010286 [ 6.045953] RAX: 0000000000000000 RBX: ffffc3844025fd60 RCX: 00000000ffffdfff [ 6.046033] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 6.046129] RBP: ffffc3844025f858 R08: ffffffff9e75ba28 R09: 00000000ffffdfff [ 6.046216] R10: ffffffff9e67ba40 R11: ffffffff9e72ba40 R12: dead000000000122 [ 6.046294] R13: 00000000fffb833b R14: 0000000000000001 R15: ffffa0e145a2b000 [ 6.046376] FS: 0000000000000000(0000) GS:ffffa0e1dfd91000(0000) knlGS:0000000000000000 [ 6.046454] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.046519] CR2: 00007f8a3918840c CR3: 0000000003c69002 CR4: 0000000000772ef0 [ 6.046599] PKRU: 55555554 [ 6.046629] Call Trace: [ 6.046655] [ 6.046681] netdev_run_todo+0x21a/0x550 [ 6.046730] ops_undo_list+0x1e3/0x1f0 [ 6.046774] cleanup_net+0x1b7/0x300 [ 6.046819] process_one_work+0x162/0x380 [ 6.046872] worker_thread+0x299/0x3c0 [ 6.046917] ? rescuer_thread+0x4c0/0x4c0 [ 6.046961] kthread+0x101/0x1f0 [ 6.047009] ? kthreads_online_cpu+0x110/0x110 [ 6.047060] ? kthreads_online_cpu+0x110/0x110 [ 6.047124] ret_from_fork+0x11c/0x140 [ 6.047174] ? kthreads_online_cpu+0x110/0x110 [ 6.047226] ret_from_fork_asm+0x11/0x20 [ 6.047268] [ 6.047292] ---[ end trace 0000000000000000 ]---