[ 14.537718] ------------[ cut here ]------------ [ 14.537807] refcount_t: underflow; use-after-free. [ 14.537869] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 14.537942] Modules linked in: [ 14.537980] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 14.538048] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.538102] Workqueue: netns cleanup_net [ 14.538142] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 14.538206] Code: b1 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 f2 b1 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 [ 14.538338] RSP: 0018:ffffac2f40257d50 EFLAGS: 00010286 [ 14.538376] RAX: 0000000000000000 RBX: ffffac2f40257d60 RCX: 00000000ffffdfff [ 14.538447] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 14.538505] RBP: ffffac2f40257878 R08: ffffffffb235ca28 R09: 00000000ffffdfff [ 14.538577] R10: ffffffffb227ca40 R11: ffffffffb232ca40 R12: dead000000000122 [ 14.538644] R13: 00000000fffba464 R14: 0000000000000001 R15: ffff8909c5592000 [ 14.538727] FS: 0000000000000000(0000) GS:ffff890a4c1c0000(0000) knlGS:0000000000000000 [ 14.538802] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 14.538847] CR2: 00007ffcafccb728 CR3: 000000000545b001 CR4: 0000000000772ef0 [ 14.538905] PKRU: 55555554 [ 14.538929] Call Trace: [ 14.538956] [ 14.538979] netdev_run_todo+0x21a/0x550 [ 14.539018] ops_undo_list+0x1e3/0x1f0 [ 14.539055] cleanup_net+0x1b7/0x2b0 [ 14.539100] process_one_work+0x162/0x380 [ 14.539141] worker_thread+0x299/0x3c0 [ 14.539177] ? rescuer_thread+0x4c0/0x4c0 [ 14.539212] kthread+0x101/0x1f0 [ 14.539246] ? kthreads_online_cpu+0x110/0x110 [ 14.539290] ? kthreads_online_cpu+0x110/0x110 [ 14.539330] ret_from_fork+0x11c/0x140 [ 14.539367] ? kthreads_online_cpu+0x110/0x110 [ 14.539413] ret_from_fork_asm+0x11/0x20 [ 14.539458] [ 14.539478] ---[ end trace 0000000000000000 ]---