[ 1.874244] ip (252) used greatest stack depth: 12136 bytes left [ 1.904872] ------------[ cut here ]------------ [ 1.904930] refcount_t: underflow; use-after-free. [ 1.904988] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.905063] Modules linked in: [ 1.905101] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.905175] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.905229] Workqueue: netns cleanup_net [ 1.905271] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.905314] Code: a3 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 15 a3 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 [ 1.905455] RSP: 0000:ffff9ae3c0067d50 EFLAGS: 00010286 [ 1.905509] RAX: 0000000000000000 RBX: ffff9ae3c0067d60 RCX: 00000000ffffdfff [ 1.905572] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.905635] RBP: ffff9ae3c0067858 R08: ffffffffa395ba28 R09: 00000000ffffdfff [ 1.905691] R10: ffffffffa387ba40 R11: ffffffffa392ba40 R12: dead000000000122 [ 1.905746] R13: 00000000fffb7313 R14: 0000000000000001 R15: ffff88c005d4a000 [ 1.905815] FS: 0000000000000000(0000) GS:ffff88c09ab91000(0000) knlGS:0000000000000000 [ 1.905882] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.905933] CR2: 00007f92c7a395e0 CR3: 0000000005c6e001 CR4: 0000000000772ef0 [ 1.905991] PKRU: 55555554 [ 1.906024] Call Trace: [ 1.906045] [ 1.906068] netdev_run_todo+0x21a/0x550 [ 1.906105] ops_undo_list+0x1e3/0x1f0 [ 1.906143] cleanup_net+0x1b7/0x300 [ 1.906177] process_one_work+0x162/0x380 [ 1.906217] worker_thread+0x299/0x3c0 [ 1.906252] ? rescuer_thread+0x4c0/0x4c0 [ 1.906285] kthread+0x101/0x1f0 [ 1.906319] ? kthreads_online_cpu+0x110/0x110 [ 1.906363] ? kthreads_online_cpu+0x110/0x110 [ 1.906407] ret_from_fork+0x11c/0x140 [ 1.906440] ? kthreads_online_cpu+0x110/0x110 [ 1.906483] ret_from_fork_asm+0x11/0x20 [ 1.906518] [ 1.906542] ---[ end trace 0000000000000000 ]---