[ 1.948618] ------------[ cut here ]------------ [ 1.948744] refcount_t: underflow; use-after-free. [ 1.948813] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.948906] Modules linked in: veth [ 1.948944] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.949031] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.949097] Workqueue: netns cleanup_net [ 1.949142] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.949193] Code: aa 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 f1 aa 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 [ 1.949366] RSP: 0018:ffffa30700067d50 EFLAGS: 00010286 [ 1.949415] RAX: 0000000000000000 RBX: ffffa30700067d60 RCX: 00000000ffffdfff [ 1.949490] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.949561] RBP: ffffa30700067880 R08: ffffffffab356a28 R09: 00000000ffffdfff [ 1.949641] R10: ffffffffab276a40 R11: ffffffffab326a40 R12: dead000000000122 [ 1.949719] R13: 00000000fffb732c R14: 0000000000000001 R15: ffff924305569000 [ 1.949796] FS: 0000000000000000(0000) GS:ffff9243931e2000(0000) knlGS:0000000000000000 [ 1.949881] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.949946] CR2: 00007fb72be025c0 CR3: 0000000001bdc002 CR4: 0000000000772ef0 [ 1.950026] PKRU: 55555554 [ 1.950051] Call Trace: [ 1.950078] [ 1.950104] netdev_run_todo+0x21a/0x550 [ 1.950153] ops_undo_list+0x1e3/0x1f0 [ 1.950189] cleanup_net+0x1b7/0x2b0 [ 1.950228] process_one_work+0x162/0x380 [ 1.950275] worker_thread+0x299/0x3c0 [ 1.950314] ? rescuer_thread+0x4c0/0x4c0 [ 1.950353] kthread+0x101/0x1f0 [ 1.950392] ? kthreads_online_cpu+0x110/0x110 [ 1.950445] ? kthreads_online_cpu+0x110/0x110 [ 1.950498] ret_from_fork+0x11c/0x140 [ 1.950539] ? kthreads_online_cpu+0x110/0x110 [ 1.950594] ret_from_fork_asm+0x11/0x20 [ 1.950647] [ 1.950676] ---[ end trace 0000000000000000 ]---