[ 1.698864] ------------[ cut here ]------------ [ 1.698940] refcount_t: underflow; use-after-free. [ 1.699003] WARNING: CPU: 3 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.699081] Modules linked in: veth [ 1.699118] CPU: 3 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.699194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.699251] Workqueue: netns cleanup_net [ 1.699290] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.699338] Code: b2 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 b1 b2 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 [ 1.699484] RSP: 0018:ffff9c02c0257d50 EFLAGS: 00010286 [ 1.699531] RAX: 0000000000000000 RBX: ffff9c02c0257d60 RCX: 00000000ffffdfff [ 1.699597] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.699656] RBP: ffff9c02c0257880 R08: ffffffffb2f56a28 R09: 00000000ffffdfff [ 1.699721] R10: ffffffffb2e76a40 R11: ffffffffb2f26a40 R12: dead000000000122 [ 1.699781] R13: 00000000fffb7244 R14: 0000000000000001 R15: ffff88fa078e9000 [ 1.699851] FS: 0000000000000000(0000) GS:ffff88fa8b762000(0000) knlGS:0000000000000000 [ 1.699920] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.699977] CR2: 00007f5ece7d4000 CR3: 00000000078cb006 CR4: 0000000000772ef0 [ 1.700045] PKRU: 55555554 [ 1.700069] Call Trace: [ 1.700090] [ 1.700116] netdev_run_todo+0x21a/0x550 [ 1.700154] ops_undo_list+0x1e3/0x1f0 [ 1.700189] cleanup_net+0x1b7/0x2b0 [ 1.700226] process_one_work+0x162/0x380 [ 1.700269] worker_thread+0x299/0x3c0 [ 1.700302] ? rescuer_thread+0x4c0/0x4c0 [ 1.700339] kthread+0x101/0x1f0 [ 1.700377] ? kthreads_online_cpu+0x110/0x110 [ 1.700422] ? kthreads_online_cpu+0x110/0x110 [ 1.700470] ret_from_fork+0x11c/0x140 [ 1.700508] ? kthreads_online_cpu+0x110/0x110 [ 1.700553] ret_from_fork_asm+0x11/0x20 [ 1.700592] [ 1.700618] ---[ end trace 0000000000000000 ]---