[ 7.989682] ------------[ cut here ]------------ [ 7.989760] refcount_t: underflow; use-after-free. [ 7.989826] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 7.989907] Modules linked in: cls_bpf sch_ingress [ 7.989963] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 7.990035] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 7.990081] Workqueue: netns cleanup_net [ 7.990121] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 7.990160] Code: 9a 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 35 9a 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 [ 7.990282] RSP: 0018:ffffada640067d50 EFLAGS: 00010286 [ 7.990323] RAX: 0000000000000000 RBX: ffffada640067d60 RCX: 00000000ffffdfff [ 7.990378] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 7.990436] RBP: ffffada640067858 R08: ffffffff9ab5ba28 R09: 00000000ffffdfff [ 7.990486] R10: ffffffff9aa7ba40 R11: ffffffff9ab2ba40 R12: dead000000000122 [ 7.990536] R13: 00000000fffb8ad4 R14: 0000000000000001 R15: ffff926dc6575000 [ 7.990598] FS: 0000000000000000(0000) GS:ffff926e63991000(0000) knlGS:0000000000000000 [ 7.990657] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.990705] CR2: 00007fc8c8ac240c CR3: 0000000002f95004 CR4: 0000000000772ef0 [ 7.990755] PKRU: 55555554 [ 7.990777] Call Trace: [ 7.990796] [ 7.990817] netdev_run_todo+0x21a/0x550 [ 7.990851] ops_undo_list+0x1e3/0x1f0 [ 7.990900] cleanup_net+0x1b7/0x300 [ 7.990943] process_one_work+0x162/0x380 [ 7.990983] worker_thread+0x299/0x3c0 [ 7.991024] ? rescuer_thread+0x4c0/0x4c0 [ 7.991058] kthread+0x101/0x1f0 [ 7.991090] ? kthreads_online_cpu+0x110/0x110 [ 7.991130] ? kthreads_online_cpu+0x110/0x110 [ 7.991164] ret_from_fork+0x11c/0x140 [ 7.991200] ? kthreads_online_cpu+0x110/0x110 [ 7.991240] ret_from_fork_asm+0x11/0x20 [ 7.991276] [ 7.991300] ---[ end trace 0000000000000000 ]---