[ 1.816398] ------------[ cut here ]------------ [ 1.816460] refcount_t: underflow; use-after-free. [ 1.816519] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.816584] Modules linked in: [ 1.816615] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.816675] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.816717] Workqueue: netns cleanup_net [ 1.816753] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.816792] Code: a0 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 95 a0 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 [ 1.816906] RSP: 0018:ffffb0fb80067d50 EFLAGS: 00010286 [ 1.816939] RAX: 0000000000000000 RBX: ffffb0fb80067d60 RCX: 00000000ffffdfff [ 1.816994] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.817043] RBP: ffffb0fb80067858 R08: ffffffffa115ba28 R09: 00000000ffffdfff [ 1.817092] R10: ffffffffa107ba40 R11: ffffffffa112ba40 R12: dead000000000122 [ 1.817141] R13: 00000000fffb72bb R14: 0000000000000001 R15: ffff9ccac603a000 [ 1.817193] FS: 0000000000000000(0000) GS:ffff9ccb5d391000(0000) knlGS:0000000000000000 [ 1.817248] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.817294] CR2: 0000555595409798 CR3: 0000000033c46006 CR4: 0000000000772ef0 [ 1.817345] PKRU: 55555554 [ 1.817367] Call Trace: [ 1.817389] [ 1.817410] netdev_run_todo+0x21a/0x550 [ 1.817444] ops_undo_list+0x1e3/0x1f0 [ 1.817476] cleanup_net+0x1b7/0x300 [ 1.817511] process_one_work+0x162/0x380 [ 1.817548] worker_thread+0x299/0x3c0 [ 1.817577] ? rescuer_thread+0x4c0/0x4c0 [ 1.817608] kthread+0x101/0x1f0 [ 1.817638] ? kthreads_online_cpu+0x110/0x110 [ 1.817676] ? kthreads_online_cpu+0x110/0x110 [ 1.817709] ret_from_fork+0x11c/0x140 [ 1.817743] ? kthreads_online_cpu+0x110/0x110 [ 1.817783] ret_from_fork_asm+0x11/0x20 [ 1.817817] [ 1.817837] ---[ end trace 0000000000000000 ]---