[ 2.224855] ip (254) used greatest stack depth: 12376 bytes left [ 2.305331] ------------[ cut here ]------------ [ 2.305426] refcount_t: underflow; use-after-free. [ 2.305500] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.305594] Modules linked in: [ 2.305637] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.305740] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.305806] Workqueue: netns cleanup_net [ 2.305862] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.305923] Code: 89 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 89 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 [ 2.306111] RSP: 0018:ffffb95880067d50 EFLAGS: 00010286 [ 2.306167] RAX: 0000000000000000 RBX: ffffb95880067d60 RCX: 00000000ffffdfff [ 2.306248] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.306335] RBP: ffffb95880067858 R08: ffffffff8a15ba28 R09: 00000000ffffdfff [ 2.306420] R10: ffffffff8a07ba40 R11: ffffffff8a12ba40 R12: dead000000000122 [ 2.306499] R13: 00000000fffb749f R14: 0000000000000001 R15: ffff9d5343bfa000 [ 2.306581] FS: 0000000000000000(0000) GS:ffff9d53f4391000(0000) knlGS:0000000000000000 [ 2.306673] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.306746] CR2: 000055e562761dec CR3: 0000000003a3d005 CR4: 0000000000772ef0 [ 2.306829] PKRU: 55555554 [ 2.306855] Call Trace: [ 2.306884] [ 2.306916] netdev_run_todo+0x21a/0x550 [ 2.306967] ops_undo_list+0x1e3/0x1f0 [ 2.307013] cleanup_net+0x1b7/0x300 [ 2.307057] process_one_work+0x162/0x380 [ 2.307109] worker_thread+0x299/0x3c0 [ 2.307154] ? rescuer_thread+0x4c0/0x4c0 [ 2.307202] kthread+0x101/0x1f0 [ 2.307249] ? kthreads_online_cpu+0x110/0x110 [ 2.307314] ? kthreads_online_cpu+0x110/0x110 [ 2.307371] ret_from_fork+0x11c/0x140 [ 2.307418] ? kthreads_online_cpu+0x110/0x110 [ 2.307476] ret_from_fork_asm+0x11/0x20 [ 2.307524] [ 2.307554] ---[ end trace 0000000000000000 ]---