[ 1.882501] ------------[ cut here ]------------ [ 1.882588] refcount_t: underflow; use-after-free. [ 1.882651] WARNING: CPU: 2 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.882724] Modules linked in: veth [ 1.882764] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.882840] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.882892] Workqueue: netns cleanup_net [ 1.882930] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.882978] Code: 83 e8 f8 c3 ba ff 90 0f 0b 90 90 c3 80 3d 39 c1 eb 00 00 75 89 c6 05 30 c1 eb 00 01 90 48 c7 c7 30 a0 11 83 e8 d5 c3 ba ff 90 <0f> 0b 90 90 c3 80 3d 14 c1 eb 00 00 0f 85 62 ff ff ff c6 05 07 c1 [ 1.883127] RSP: 0018:ffffaba180257d50 EFLAGS: 00010286 [ 1.883179] RAX: 0000000000000000 RBX: ffffaba180257d60 RCX: 00000000ffffdfff [ 1.883246] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.883314] RBP: ffffaba180257880 R08: ffffffff83556a28 R09: 00000000ffffdfff [ 1.883376] R10: ffffffff83476a40 R11: ffffffff83526a40 R12: dead000000000122 [ 1.883443] R13: 00000000fffb72de R14: 0000000000000001 R15: ffff9ad305829000 [ 1.883512] FS: 0000000000000000(0000) GS:ffff9ad3bb0e2000(0000) knlGS:0000000000000000 [ 1.883582] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.883638] CR2: 0000000025a24688 CR3: 0000000003f1b001 CR4: 0000000000772ef0 [ 1.883701] PKRU: 55555554 [ 1.883727] Call Trace: [ 1.883750] [ 1.883775] netdev_run_todo+0x21a/0x550 [ 1.883816] ops_undo_list+0x1e3/0x1f0 [ 1.883851] cleanup_net+0x1b7/0x2b0 [ 1.883889] process_one_work+0x162/0x380 [ 1.883933] worker_thread+0x299/0x3c0 [ 1.883970] ? rescuer_thread+0x4c0/0x4c0 [ 1.884008] kthread+0x101/0x1f0 [ 1.884046] ? kthreads_online_cpu+0x110/0x110 [ 1.884093] ? kthreads_online_cpu+0x110/0x110 [ 1.884141] ret_from_fork+0x11c/0x140 [ 1.884179] ? kthreads_online_cpu+0x110/0x110 [ 1.884227] ret_from_fork_asm+0x11/0x20 [ 1.884266] [ 1.884292] ---[ end trace 0000000000000000 ]---