[ 1.859568] ------------[ cut here ]------------ [ 1.859691] refcount_t: underflow; use-after-free. [ 1.859792] WARNING: CPU: 1 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.859871] Modules linked in: veth [ 1.859908] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.859976] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.860025] Workqueue: netns cleanup_net [ 1.860067] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.860112] Code: 86 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 91 86 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 [ 1.860266] RSP: 0018:ffffac1e8024bd50 EFLAGS: 00010286 [ 1.860309] RAX: 0000000000000000 RBX: ffffac1e8024bd60 RCX: 00000000ffffdfff [ 1.860373] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.860429] RBP: ffffac1e8024b880 R08: ffffffff86d56a28 R09: 00000000ffffdfff [ 1.860484] R10: ffffffff86c76a40 R11: ffffffff86d26a40 R12: dead000000000122 [ 1.860559] R13: 00000000fffb72d6 R14: 0000000000000001 R15: ffff957642fdc000 [ 1.860625] FS: 0000000000000000(0000) GS:ffff9576f7862000(0000) knlGS:0000000000000000 [ 1.860691] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.860747] CR2: 00007f2fddf86f20 CR3: 0000000013441001 CR4: 0000000000772ef0 [ 1.860815] PKRU: 55555554 [ 1.860840] Call Trace: [ 1.860860] [ 1.860884] netdev_run_todo+0x21a/0x550 [ 1.860931] ops_undo_list+0x1e3/0x1f0 [ 1.860972] cleanup_net+0x1b7/0x2b0 [ 1.861007] process_one_work+0x162/0x380 [ 1.861053] worker_thread+0x299/0x3c0 [ 1.861091] ? rescuer_thread+0x4c0/0x4c0 [ 1.861136] kthread+0x101/0x1f0 [ 1.861178] ? kthreads_online_cpu+0x110/0x110 [ 1.861232] ? kthreads_online_cpu+0x110/0x110 [ 1.861285] ret_from_fork+0x11c/0x140 [ 1.861324] ? kthreads_online_cpu+0x110/0x110 [ 1.861366] ret_from_fork_asm+0x11/0x20 [ 1.861406] [ 1.861429] ---[ end trace 0000000000000000 ]---