[ 1.804583] ------------[ cut here ]------------ [ 1.804677] refcount_t: underflow; use-after-free. [ 1.804743] WARNING: CPU: 1 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.804812] Modules linked in: veth [ 1.804852] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.804935] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.804976] Workqueue: netns cleanup_net [ 1.805019] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.805061] Code: 93 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 93 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 [ 1.805209] RSP: 0018:ffffb31d8024bd50 EFLAGS: 00010286 [ 1.805248] RAX: 0000000000000000 RBX: ffffb31d8024bd60 RCX: 00000000ffffdfff [ 1.805303] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.805352] RBP: ffffb31d8024b880 R08: ffffffff93f56a28 R09: 00000000ffffdfff [ 1.805410] R10: ffffffff93e76a40 R11: ffffffff93f26a40 R12: dead000000000122 [ 1.805460] R13: 00000000fffb72b0 R14: 0000000000000001 R15: ffff8ff6846e9000 [ 1.805523] FS: 0000000000000000(0000) GS:ffff8ff72a662000(0000) knlGS:0000000000000000 [ 1.805585] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.805631] CR2: 00007fe534771f70 CR3: 0000000036841003 CR4: 0000000000772ef0 [ 1.805682] PKRU: 55555554 [ 1.805703] Call Trace: [ 1.805722] [ 1.805745] netdev_run_todo+0x21a/0x550 [ 1.805779] ops_undo_list+0x1e3/0x1f0 [ 1.805813] cleanup_net+0x1b7/0x2b0 [ 1.805846] process_one_work+0x162/0x380 [ 1.805883] worker_thread+0x299/0x3c0 [ 1.805917] ? rescuer_thread+0x4c0/0x4c0 [ 1.805948] kthread+0x101/0x1f0 [ 1.805981] ? kthreads_online_cpu+0x110/0x110 [ 1.806026] ? kthreads_online_cpu+0x110/0x110 [ 1.806066] ret_from_fork+0x11c/0x140 [ 1.806101] ? kthreads_online_cpu+0x110/0x110 [ 1.806156] ret_from_fork_asm+0x11/0x20 [ 1.806205] [ 1.806220] ---[ end trace 0000000000000000 ]---