[ 13.942393] ------------[ cut here ]------------ [ 13.942463] refcount_t: underflow; use-after-free. [ 13.942528] WARNING: CPU: 3 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 13.942596] Modules linked in: [ 13.942635] CPU: 3 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 13.942724] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.942793] Workqueue: netns cleanup_net [ 13.942843] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 13.942899] Code: b4 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 b4 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 [ 13.943035] RSP: 0018:ffffb80840257d50 EFLAGS: 00010286 [ 13.943077] RAX: 0000000000000000 RBX: ffffb80840257d60 RCX: 00000000ffffdfff [ 13.943159] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 13.943227] RBP: ffffb80840257878 R08: ffffffffb535ca28 R09: 00000000ffffdfff [ 13.943277] R10: ffffffffb527ca40 R11: ffffffffb532ca40 R12: dead000000000122 [ 13.943332] R13: 00000000fffba213 R14: 0000000000000001 R15: ffff9094c4ab4000 [ 13.943391] FS: 0000000000000000(0000) GS:ffff909549340000(0000) knlGS:0000000000000000 [ 13.943458] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.943534] CR2: 0000563bacfa1dec CR3: 000000000a79c002 CR4: 0000000000772ef0 [ 13.943598] PKRU: 55555554 [ 13.943619] Call Trace: [ 13.943638] [ 13.943658] netdev_run_todo+0x21a/0x550 [ 13.943699] ops_undo_list+0x1e3/0x1f0 [ 13.943746] cleanup_net+0x1b7/0x2b0 [ 13.943790] process_one_work+0x162/0x380 [ 13.943828] worker_thread+0x299/0x3c0 [ 13.943862] ? rescuer_thread+0x4c0/0x4c0 [ 13.943891] kthread+0x101/0x1f0 [ 13.943922] ? kthreads_online_cpu+0x110/0x110 [ 13.943978] ? kthreads_online_cpu+0x110/0x110 [ 13.944028] ret_from_fork+0x11c/0x140 [ 13.944071] ? kthreads_online_cpu+0x110/0x110 [ 13.944125] ret_from_fork_asm+0x11/0x20 [ 13.944173] [ 13.944197] ---[ end trace 0000000000000000 ]---