[ 2.266265] ip (263) used greatest stack depth: 12136 bytes left [ 5.091363] ------------[ cut here ]------------ [ 5.091460] refcount_t: underflow; use-after-free. [ 5.091529] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 5.091631] Modules linked in: [ 5.091685] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 5.091784] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5.091851] Workqueue: netns cleanup_net [ 5.091906] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 5.091964] Code: 82 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 d5 82 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 [ 5.092151] RSP: 0018:ffffa1980025fd50 EFLAGS: 00010286 [ 5.092211] RAX: 0000000000000000 RBX: ffffa1980025fd60 RCX: 00000000ffffdfff [ 5.092300] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 5.092377] RBP: ffffa1980025f858 R08: ffffffff8355ba28 R09: 00000000ffffdfff [ 5.092453] R10: ffffffff8347ba40 R11: ffffffff8352ba40 R12: dead000000000122 [ 5.092534] R13: 00000000fffb7f82 R14: 0000000000000001 R15: ffff913f448be000 [ 5.092633] FS: 0000000000000000(0000) GS:ffff913ffaf91000(0000) knlGS:0000000000000000 [ 5.092717] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.092783] CR2: 00007fc153fbe658 CR3: 0000000004a32004 CR4: 0000000000772ef0 [ 5.092861] PKRU: 55555554 [ 5.092888] Call Trace: [ 5.092916] [ 5.092949] netdev_run_todo+0x21a/0x550 [ 5.092996] ops_undo_list+0x1e3/0x1f0 [ 5.093048] cleanup_net+0x1b7/0x300 [ 5.093094] process_one_work+0x162/0x380 [ 5.093147] worker_thread+0x299/0x3c0 [ 5.093195] ? rescuer_thread+0x4c0/0x4c0 [ 5.093240] kthread+0x101/0x1f0 [ 5.093293] ? kthreads_online_cpu+0x110/0x110 [ 5.093354] ? kthreads_online_cpu+0x110/0x110 [ 5.093411] ret_from_fork+0x11c/0x140 [ 5.093463] ? kthreads_online_cpu+0x110/0x110 [ 5.093523] ret_from_fork_asm+0x11/0x20 [ 5.093568] [ 5.093599] ---[ end trace 0000000000000000 ]---