[ 3.141589] ------------[ cut here ]------------ [ 3.141657] refcount_t: underflow; use-after-free. [ 3.141711] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 3.141780] Modules linked in: [ 3.141815] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 3.141884] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.141931] Workqueue: netns cleanup_net [ 3.141969] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 3.142012] Code: 8c 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 8c 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 [ 3.142150] RSP: 0018:ffffbaac00067d50 EFLAGS: 00010286 [ 3.142193] RAX: 0000000000000000 RBX: ffffbaac00067d60 RCX: 00000000ffffdfff [ 3.142253] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 3.142314] RBP: ffffbaac00067858 R08: ffffffff8d75ba28 R09: 00000000ffffdfff [ 3.142381] R10: ffffffff8d67ba40 R11: ffffffff8d72ba40 R12: dead000000000122 [ 3.142435] R13: 00000000fffb77e7 R14: 0000000000000001 R15: ffff9654c54bd000 [ 3.142490] FS: 0000000000000000(0000) GS:ffff965570d91000(0000) knlGS:0000000000000000 [ 3.142562] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.142614] CR2: 00005603109bf6a8 CR3: 000000000718f005 CR4: 0000000000772ef0 [ 3.142669] PKRU: 55555554 [ 3.142693] Call Trace: [ 3.142719] [ 3.142741] netdev_run_todo+0x21a/0x550 [ 3.142785] ops_undo_list+0x1e3/0x1f0 [ 3.142835] cleanup_net+0x1b7/0x300 [ 3.142881] process_one_work+0x162/0x380 [ 3.142919] worker_thread+0x299/0x3c0 [ 3.142953] ? rescuer_thread+0x4c0/0x4c0 [ 3.142986] kthread+0x101/0x1f0 [ 3.143020] ? kthreads_online_cpu+0x110/0x110 [ 3.143062] ? kthreads_online_cpu+0x110/0x110 [ 3.143105] ret_from_fork+0x11c/0x140 [ 3.143138] ? kthreads_online_cpu+0x110/0x110 [ 3.143180] ret_from_fork_asm+0x11/0x20 [ 3.143214] [ 3.143237] ---[ end trace 0000000000000000 ]---