[ 2.038575] ip (260) used greatest stack depth: 12168 bytes left [ 5.064265] ------------[ cut here ]------------ [ 5.064347] refcount_t: underflow; use-after-free. [ 5.064414] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 5.064514] Modules linked in: [ 5.064557] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 5.064657] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5.064724] Workqueue: netns cleanup_net [ 5.064773] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 5.064832] Code: ae 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 ae 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 [ 5.065021] RSP: 0000:ffffba1e80257d50 EFLAGS: 00010286 [ 5.065074] RAX: 0000000000000000 RBX: ffffba1e80257d60 RCX: 00000000ffffdfff [ 5.065155] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 5.065238] RBP: ffffba1e80257858 R08: ffffffffaf55ba28 R09: 00000000ffffdfff [ 5.065319] R10: ffffffffaf47ba40 R11: ffffffffaf52ba40 R12: dead000000000122 [ 5.065399] R13: 00000000fffb7f69 R14: 0000000000000001 R15: ffff9daec60bf000 [ 5.065482] FS: 0000000000000000(0000) GS:ffff9daf4ef91000(0000) knlGS:0000000000000000 [ 5.065572] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.065644] CR2: 00007f92cda19b00 CR3: 0000000004eb5002 CR4: 0000000000772ef0 [ 5.065725] PKRU: 55555554 [ 5.065750] Call Trace: [ 5.065779] [ 5.065805] netdev_run_todo+0x21a/0x550 [ 5.065847] ops_undo_list+0x1e3/0x1f0 [ 5.065894] cleanup_net+0x1b7/0x300 [ 5.065941] process_one_work+0x162/0x380 [ 5.065990] worker_thread+0x299/0x3c0 [ 5.066037] ? rescuer_thread+0x4c0/0x4c0 [ 5.066084] kthread+0x101/0x1f0 [ 5.066125] ? kthreads_online_cpu+0x110/0x110 [ 5.066179] ? kthreads_online_cpu+0x110/0x110 [ 5.066242] ret_from_fork+0x11c/0x140 [ 5.066292] ? kthreads_online_cpu+0x110/0x110 [ 5.066349] ret_from_fork_asm+0x11/0x20 [ 5.066402] [ 5.066428] ---[ end trace 0000000000000000 ]---