[ 1.907251] ------------[ cut here ]------------ [ 1.907363] refcount_t: underflow; use-after-free. [ 1.907435] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.907522] Modules linked in: veth [ 1.907574] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.907673] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.907741] Workqueue: netns cleanup_net [ 1.907794] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.907847] Code: 99 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 d1 99 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 [ 1.908040] RSP: 0018:ffff9fc440067d50 EFLAGS: 00010286 [ 1.908101] RAX: 0000000000000000 RBX: ffff9fc440067d60 RCX: 00000000ffffdfff [ 1.908181] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.908268] RBP: ffff9fc440067880 R08: ffffffff9a156a28 R09: 00000000ffffdfff [ 1.908351] R10: ffffffff9a076a40 R11: ffffffff9a126a40 R12: dead000000000122 [ 1.908430] R13: 00000000fffb72f8 R14: 0000000000000001 R15: ffff8fa504af1000 [ 1.908513] FS: 0000000000000000(0000) GS:ffff8fa5a43e2000(0000) knlGS:0000000000000000 [ 1.908600] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.908669] CR2: 00007f4f33d505c0 CR3: 0000000001b53005 CR4: 0000000000772ef0 [ 1.908748] PKRU: 55555554 [ 1.908774] Call Trace: [ 1.908804] [ 1.908836] netdev_run_todo+0x21a/0x550 [ 1.908892] ops_undo_list+0x1e3/0x1f0 [ 1.908937] cleanup_net+0x1b7/0x2b0 [ 1.908986] process_one_work+0x162/0x380 [ 1.909038] worker_thread+0x299/0x3c0 [ 1.909086] ? rescuer_thread+0x4c0/0x4c0 [ 1.909134] kthread+0x101/0x1f0 [ 1.909182] ? kthreads_online_cpu+0x110/0x110 [ 1.909240] ? kthreads_online_cpu+0x110/0x110 [ 1.909302] ret_from_fork+0x11c/0x140 [ 1.909351] ? kthreads_online_cpu+0x110/0x110 [ 1.909405] ret_from_fork_asm+0x11/0x20 [ 1.909455] [ 1.909486] ---[ end trace 0000000000000000 ]---