[ 12.730044] ------------[ cut here ]------------ [ 12.730116] refcount_t: underflow; use-after-free. [ 12.730180] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 12.730254] Modules linked in: tcp_diag mptcp_diag inet_diag [ 12.730308] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 12.730390] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.730446] Workqueue: netns cleanup_net [ 12.730486] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 12.730532] Code: a1 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 b2 a1 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 [ 12.730687] RSP: 0018:ffffa0bf80067d50 EFLAGS: 00010286 [ 12.730731] RAX: 0000000000000000 RBX: ffffa0bf80067d60 RCX: 00000000ffffdfff [ 12.730802] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 12.730866] RBP: ffffa0bf80067878 R08: ffffffffa1f5ca28 R09: 00000000ffffdfff [ 12.730934] R10: ffffffffa1e7ca40 R11: ffffffffa1f2ca40 R12: dead000000000122 [ 12.730993] R13: 00000000fffb9d53 R14: 0000000000000001 R15: ffff958201c9c000 [ 12.731076] FS: 0000000000000000(0000) GS:ffff95829c5c0000(0000) knlGS:0000000000000000 [ 12.731148] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 12.731202] CR2: 0000563d5146a3b8 CR3: 0000000004b4b001 CR4: 0000000000772ef0 [ 12.731266] PKRU: 55555554 [ 12.731290] Call Trace: [ 12.731327] [ 12.731352] netdev_run_todo+0x21a/0x550 [ 12.731399] ops_undo_list+0x1e3/0x1f0 [ 12.731440] cleanup_net+0x1b7/0x2b0 [ 12.731476] process_one_work+0x162/0x380 [ 12.731514] worker_thread+0x299/0x3c0 [ 12.731550] ? rescuer_thread+0x4c0/0x4c0 [ 12.731586] kthread+0x101/0x1f0 [ 12.731628] ? kthreads_online_cpu+0x110/0x110 [ 12.731672] ? kthreads_online_cpu+0x110/0x110 [ 12.731717] ret_from_fork+0x11c/0x140 [ 12.731759] ? kthreads_online_cpu+0x110/0x110 [ 12.731805] ret_from_fork_asm+0x11/0x20 [ 12.731849] [ 12.731872] ---[ end trace 0000000000000000 ]---