[ 13.206800] ------------[ cut here ]------------ [ 13.206878] refcount_t: underflow; use-after-free. [ 13.206937] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 13.207015] Modules linked in: tcp_diag mptcp_diag inet_diag [ 13.207078] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 13.207161] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.207215] Workqueue: netns cleanup_net [ 13.207258] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 13.207310] Code: 9f e8 48 df ba ff 90 0f 0b 90 90 c3 80 3d c9 50 ec 00 00 75 89 c6 05 c0 50 ec 00 01 90 48 c7 c7 c8 4a 92 9f e8 25 df ba ff 90 <0f> 0b 90 90 c3 80 3d a4 50 ec 00 00 0f 85 62 ff ff ff c6 05 97 50 [ 13.207465] RSP: 0018:ffffb79240067d50 EFLAGS: 00010286 [ 13.207514] RAX: 0000000000000000 RBX: ffffb79240067d60 RCX: 00000000ffffdfff [ 13.207585] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 13.207657] RBP: ffffb79240067878 R08: ffffffff9fd5ca28 R09: 00000000ffffdfff [ 13.207726] R10: ffffffff9fc7ca40 R11: ffffffff9fd2ca40 R12: dead000000000122 [ 13.207795] R13: 00000000fffb9f33 R14: 0000000000000001 R15: ffff9e28453d2000 [ 13.207870] FS: 0000000000000000(0000) GS:ffff9e28de7c0000(0000) knlGS:0000000000000000 [ 13.207938] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.207996] CR2: 000055d2af99d3a8 CR3: 00000000082a7004 CR4: 0000000000772ef0 [ 13.208064] PKRU: 55555554 [ 13.208091] Call Trace: [ 13.208122] [ 13.208153] netdev_run_todo+0x21a/0x550 [ 13.208201] ops_undo_list+0x1e3/0x1f0 [ 13.208241] cleanup_net+0x1b7/0x2b0 [ 13.208279] process_one_work+0x162/0x380 [ 13.208322] worker_thread+0x299/0x3c0 [ 13.208361] ? rescuer_thread+0x4c0/0x4c0 [ 13.208400] kthread+0x101/0x1f0 [ 13.208441] ? kthreads_online_cpu+0x110/0x110 [ 13.208491] ? kthreads_online_cpu+0x110/0x110 [ 13.208540] ret_from_fork+0x11c/0x140 [ 13.208582] ? kthreads_online_cpu+0x110/0x110 [ 13.208625] ret_from_fork_asm+0x11/0x20 [ 13.208671] [ 13.208698] ---[ end trace 0000000000000000 ]---