[ 1.732503] ip (257) used greatest stack depth: 12200 bytes left [ 1.967045] ------------[ cut here ]------------ [ 1.967104] refcount_t: underflow; use-after-free. [ 1.967157] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.967218] Modules linked in: [ 1.967250] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.967311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.967353] Workqueue: netns cleanup_net [ 1.967385] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.967423] Code: 9b 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 55 9b 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 [ 1.967540] RSP: 0000:ffffafdd00257d50 EFLAGS: 00010286 [ 1.967579] RAX: 0000000000000000 RBX: ffffafdd00257d60 RCX: 00000000ffffdfff [ 1.967628] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.967679] RBP: ffffafdd00257858 R08: ffffffff9bd5ba28 R09: 00000000ffffdfff [ 1.967735] R10: ffffffff9bc7ba40 R11: ffffffff9bd2ba40 R12: dead000000000122 [ 1.967784] R13: 00000000fffb7351 R14: 0000000000000001 R15: ffff904ac606a000 [ 1.967835] FS: 0000000000000000(0000) GS:ffff904b62791000(0000) knlGS:0000000000000000 [ 1.967890] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.967936] CR2: 00007f37b45ad888 CR3: 0000000004bfc002 CR4: 0000000000772ef0 [ 1.967995] PKRU: 55555554 [ 1.968018] Call Trace: [ 1.968035] [ 1.968050] netdev_run_todo+0x21a/0x550 [ 1.968078] ops_undo_list+0x1e3/0x1f0 [ 1.968106] cleanup_net+0x1b7/0x300 [ 1.968137] process_one_work+0x162/0x380 [ 1.968172] worker_thread+0x299/0x3c0 [ 1.968201] ? rescuer_thread+0x4c0/0x4c0 [ 1.968232] kthread+0x101/0x1f0 [ 1.968262] ? kthreads_online_cpu+0x110/0x110 [ 1.968301] ? kthreads_online_cpu+0x110/0x110 [ 1.968339] ret_from_fork+0x11c/0x140 [ 1.968370] ? kthreads_online_cpu+0x110/0x110 [ 1.968407] ret_from_fork_asm+0x11/0x20 [ 1.968439] [ 1.968455] ---[ end trace 0000000000000000 ]---