[ 1.807725] ------------[ cut here ]------------ [ 1.807792] refcount_t: underflow; use-after-free. [ 1.807838] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.807902] Modules linked in: veth [ 1.807935] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.808006] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.808053] Workqueue: netns cleanup_net [ 1.808087] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.808124] Code: 89 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 f1 89 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 [ 1.808241] RSP: 0018:ffffb363c0257d50 EFLAGS: 00010286 [ 1.808273] RAX: 0000000000000000 RBX: ffffb363c0257d60 RCX: 00000000ffffdfff [ 1.808326] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.808379] RBP: ffffb363c0257880 R08: ffffffff8a356a28 R09: 00000000ffffdfff [ 1.808426] R10: ffffffff8a276a40 R11: ffffffff8a326a40 R12: dead000000000122 [ 1.808474] R13: 00000000fffb72ac R14: 0000000000000001 R15: ffff95ad84bb1000 [ 1.808532] FS: 0000000000000000(0000) GS:ffff95ae341e2000(0000) knlGS:0000000000000000 [ 1.808588] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.808632] CR2: 00007f37f0760000 CR3: 0000000004b4a004 CR4: 0000000000772ef0 [ 1.808681] PKRU: 55555554 [ 1.808716] Call Trace: [ 1.808735] [ 1.808756] netdev_run_todo+0x21a/0x550 [ 1.808789] ops_undo_list+0x1e3/0x1f0 [ 1.808821] cleanup_net+0x1b7/0x2b0 [ 1.808851] process_one_work+0x162/0x380 [ 1.808886] worker_thread+0x299/0x3c0 [ 1.808925] ? rescuer_thread+0x4c0/0x4c0 [ 1.808955] kthread+0x101/0x1f0 [ 1.808985] ? kthreads_online_cpu+0x110/0x110 [ 1.809023] ? kthreads_online_cpu+0x110/0x110 [ 1.809062] ret_from_fork+0x11c/0x140 [ 1.809098] ? kthreads_online_cpu+0x110/0x110 [ 1.809137] ret_from_fork_asm+0x11/0x20 [ 1.809168] [ 1.809189] ---[ end trace 0000000000000000 ]---