[ 2.046310] ip (266) used greatest stack depth: 12168 bytes left [ 2.189469] ------------[ cut here ]------------ [ 2.189552] refcount_t: underflow; use-after-free. [ 2.189618] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.189714] Modules linked in: [ 2.189753] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.189848] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.189912] Workqueue: netns cleanup_net [ 2.189960] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.190019] Code: 86 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 86 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 [ 2.190208] RSP: 0018:ffffa5c380257d50 EFLAGS: 00010286 [ 2.190254] RAX: 0000000000000000 RBX: ffffa5c380257d60 RCX: 00000000ffffdfff [ 2.190309] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.190364] RBP: ffffa5c380257858 R08: ffffffff86f5ba28 R09: 00000000ffffdfff [ 2.190420] R10: ffffffff86e7ba40 R11: ffffffff86f2ba40 R12: dead000000000122 [ 2.190474] R13: 00000000fffb7427 R14: 0000000000000001 R15: ffff925c45e1d000 [ 2.190532] FS: 0000000000000000(0000) GS:ffff925cf7591000(0000) knlGS:0000000000000000 [ 2.190590] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.190636] CR2: 00007fffd022f828 CR3: 0000000001b66002 CR4: 0000000000772ef0 [ 2.190691] PKRU: 55555554 [ 2.190712] Call Trace: [ 2.190730] [ 2.190751] netdev_run_todo+0x21a/0x550 [ 2.190783] ops_undo_list+0x1e3/0x1f0 [ 2.190819] cleanup_net+0x1b7/0x300 [ 2.190852] process_one_work+0x162/0x380 [ 2.190886] worker_thread+0x299/0x3c0 [ 2.190916] ? rescuer_thread+0x4c0/0x4c0 [ 2.190949] kthread+0x101/0x1f0 [ 2.190979] ? kthreads_online_cpu+0x110/0x110 [ 2.191016] ? kthreads_online_cpu+0x110/0x110 [ 2.191055] ret_from_fork+0x11c/0x140 [ 2.191090] ? kthreads_online_cpu+0x110/0x110 [ 2.191127] ret_from_fork_asm+0x11/0x20 [ 2.191162] [ 2.191182] ---[ end trace 0000000000000000 ]---