[ 2.082633] ------------[ cut here ]------------ [ 2.082774] refcount_t: underflow; use-after-free. [ 2.082859] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.082965] Modules linked in: veth [ 2.083033] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.083137] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.083204] Workqueue: netns cleanup_net [ 2.083257] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.083314] Code: ab e8 f8 c3 ba ff 90 0f 0b 90 90 c3 80 3d 39 c1 eb 00 00 75 89 c6 05 30 c1 eb 00 01 90 48 c7 c7 30 a0 91 ab e8 d5 c3 ba ff 90 <0f> 0b 90 90 c3 80 3d 14 c1 eb 00 00 0f 85 62 ff ff ff c6 05 07 c1 [ 2.083516] RSP: 0018:ffffb80440067d50 EFLAGS: 00010286 [ 2.083577] RAX: 0000000000000000 RBX: ffffb80440067d60 RCX: 00000000ffffdfff [ 2.083670] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.083768] RBP: ffffb80440067880 R08: ffffffffabd56a28 R09: 00000000ffffdfff [ 2.083846] R10: ffffffffabc76a40 R11: ffffffffabd26a40 R12: dead000000000122 [ 2.083924] R13: 00000000fffb73b9 R14: 0000000000000001 R15: ffff8f0b05ce0000 [ 2.084007] FS: 0000000000000000(0000) GS:ffff8f0b927e2000(0000) knlGS:0000000000000000 [ 2.084094] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.084160] CR2: 00007f9b48ff0b20 CR3: 00000000031b8002 CR4: 0000000000772ef0 [ 2.084240] PKRU: 55555554 [ 2.084265] Call Trace: [ 2.084296] [ 2.084325] netdev_run_todo+0x21a/0x550 [ 2.084378] ops_undo_list+0x1e3/0x1f0 [ 2.084423] cleanup_net+0x1b7/0x2b0 [ 2.084470] process_one_work+0x162/0x380 [ 2.084525] worker_thread+0x299/0x3c0 [ 2.084578] ? rescuer_thread+0x4c0/0x4c0 [ 2.084626] kthread+0x101/0x1f0 [ 2.084669] ? kthreads_online_cpu+0x110/0x110 [ 2.084727] ? kthreads_online_cpu+0x110/0x110 [ 2.084786] ret_from_fork+0x11c/0x140 [ 2.084835] ? kthreads_online_cpu+0x110/0x110 [ 2.084893] ret_from_fork_asm+0x11/0x20 [ 2.084932] [ 2.084959] ---[ end trace 0000000000000000 ]---