[ 1.971240] ------------[ cut here ]------------ [ 1.971333] refcount_t: underflow; use-after-free. [ 1.971395] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.971477] Modules linked in: veth [ 1.971518] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.971598] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.971655] Workqueue: netns cleanup_net [ 1.971700] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.971752] Code: b8 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 31 b8 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 [ 1.971910] RSP: 0018:ffffb5a38024fd50 EFLAGS: 00010286 [ 1.971952] RAX: 0000000000000000 RBX: ffffb5a38024fd60 RCX: 00000000ffffdfff [ 1.972017] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.972082] RBP: ffffb5a38024f880 R08: ffffffffb8756a28 R09: 00000000ffffdfff [ 1.972148] R10: ffffffffb8676a40 R11: ffffffffb8726a40 R12: dead000000000122 [ 1.972229] R13: 00000000fffb734a R14: 0000000000000001 R15: ffff9fb9067c1000 [ 1.972303] FS: 0000000000000000(0000) GS:ffff9fb985de2000(0000) knlGS:0000000000000000 [ 1.972375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.972435] CR2: 00007f55a6ef8000 CR3: 0000000006708005 CR4: 0000000000772ef0 [ 1.972518] PKRU: 55555554 [ 1.972547] Call Trace: [ 1.972571] [ 1.972593] netdev_run_todo+0x21a/0x550 [ 1.972634] ops_undo_list+0x1e3/0x1f0 [ 1.972674] cleanup_net+0x1b7/0x2b0 [ 1.972713] process_one_work+0x162/0x380 [ 1.972758] worker_thread+0x299/0x3c0 [ 1.972799] ? rescuer_thread+0x4c0/0x4c0 [ 1.972837] kthread+0x101/0x1f0 [ 1.972878] ? kthreads_online_cpu+0x110/0x110 [ 1.972927] ? kthreads_online_cpu+0x110/0x110 [ 1.972970] ret_from_fork+0x11c/0x140 [ 1.973009] ? kthreads_online_cpu+0x110/0x110 [ 1.973058] ret_from_fork_asm+0x11/0x20 [ 1.973100] [ 1.973120] ---[ end trace 0000000000000000 ]---