[ 2.228568] ip (255) used greatest stack depth: 12136 bytes left [ 4.827621] ------------[ cut here ]------------ [ 4.827722] refcount_t: underflow; use-after-free. [ 4.827796] WARNING: CPU: 1 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 4.827886] Modules linked in: [ 4.827931] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 4.828022] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4.828104] Workqueue: netns cleanup_net [ 4.828151] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 4.828210] Code: a6 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 75 a6 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 [ 4.828381] RSP: 0018:ffffa3450024fd50 EFLAGS: 00010286 [ 4.828432] RAX: 0000000000000000 RBX: ffffa3450024fd60 RCX: 00000000ffffdfff [ 4.828512] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 4.828593] RBP: ffffa3450024f858 R08: ffffffffa6f5ba28 R09: 00000000ffffdfff [ 4.828675] R10: ffffffffa6e7ba40 R11: ffffffffa6f2ba40 R12: dead000000000122 [ 4.828757] R13: 00000000fffb7e79 R14: 0000000000000001 R15: ffff8904c6c3d000 [ 4.828837] FS: 0000000000000000(0000) GS:ffff890557611000(0000) knlGS:0000000000000000 [ 4.828919] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.828984] CR2: 00005616eaab5440 CR3: 000000002d646004 CR4: 0000000000772ef0 [ 4.829041] PKRU: 55555554 [ 4.829062] Call Trace: [ 4.829081] [ 4.829109] netdev_run_todo+0x21a/0x550 [ 4.829153] ops_undo_list+0x1e3/0x1f0 [ 4.829196] cleanup_net+0x1b7/0x300 [ 4.829242] process_one_work+0x162/0x380 [ 4.829294] worker_thread+0x299/0x3c0 [ 4.829328] ? rescuer_thread+0x4c0/0x4c0 [ 4.829366] kthread+0x101/0x1f0 [ 4.829410] ? kthreads_online_cpu+0x110/0x110 [ 4.829461] ? kthreads_online_cpu+0x110/0x110 [ 4.829518] ret_from_fork+0x11c/0x140 [ 4.829586] ? kthreads_online_cpu+0x110/0x110 [ 4.829650] ret_from_fork_asm+0x11/0x20 [ 4.829698] [ 4.829719] ---[ end trace 0000000000000000 ]---