[ 2.303137] ------------[ cut here ]------------ [ 2.303230] refcount_t: underflow; use-after-free. [ 2.303296] WARNING: CPU: 3 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.303394] Modules linked in: [ 2.303437] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.303538] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.303607] Workqueue: netns cleanup_net [ 2.303655] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.303719] Code: 8d e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 b5 8d e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5 [ 2.303906] RSP: 0018:ffffb6a0c024fd50 EFLAGS: 00010286 [ 2.303959] RAX: 0000000000000000 RBX: ffffb6a0c024fd60 RCX: 00000000ffffdfff [ 2.304045] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.304133] RBP: ffffb6a0c024f858 R08: ffffffff8e35ba28 R09: 00000000ffffdfff [ 2.304213] R10: ffffffff8e27ba40 R11: ffffffff8e32ba40 R12: dead000000000122 [ 2.304294] R13: 00000000fffb7486 R14: 0000000000000001 R15: ffff91adc569d000 [ 2.304378] FS: 0000000000000000(0000) GS:ffff91ae70311000(0000) knlGS:0000000000000000 [ 2.304466] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.304541] CR2: 00007f683add71b4 CR3: 0000000019246003 CR4: 0000000000772ef0 [ 2.304622] PKRU: 55555554 [ 2.304654] Call Trace: [ 2.304683] [ 2.304708] netdev_run_todo+0x21a/0x550 [ 2.304752] ops_undo_list+0x1e3/0x1f0 [ 2.304798] cleanup_net+0x1b7/0x300 [ 2.304848] process_one_work+0x162/0x380 [ 2.304901] worker_thread+0x299/0x3c0 [ 2.304948] ? rescuer_thread+0x4c0/0x4c0 [ 2.304988] kthread+0x101/0x1f0 [ 2.305041] ? kthreads_online_cpu+0x110/0x110 [ 2.305103] ? kthreads_online_cpu+0x110/0x110 [ 2.305165] ret_from_fork+0x11c/0x140 [ 2.305214] ? kthreads_online_cpu+0x110/0x110 [ 2.305274] ret_from_fork_asm+0x11/0x20 [ 2.305324] [ 2.305358] ---[ end trace 0000000000000000 ]---