[ 2.394129] ------------[ cut here ]------------ [ 2.394195] refcount_t: underflow; use-after-free. [ 2.394262] WARNING: CPU: 3 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.394354] Modules linked in: [ 2.394395] CPU: 3 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.394498] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.394563] Workqueue: netns cleanup_net [ 2.394611] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.394671] Code: a1 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 35 a1 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 [ 2.394862] RSP: 0018:ffffb4ea80257d50 EFLAGS: 00010286 [ 2.394915] RAX: 0000000000000000 RBX: ffffb4ea80257d60 RCX: 00000000ffffdfff [ 2.394993] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.395075] RBP: ffffb4ea80257858 R08: ffffffffa1b5ba28 R09: 00000000ffffdfff [ 2.395159] R10: ffffffffa1a7ba40 R11: ffffffffa1b2ba40 R12: dead000000000122 [ 2.395239] R13: 00000000fffb74e9 R14: 0000000000000001 R15: ffff8e23c5db5000 [ 2.395318] FS: 0000000000000000(0000) GS:ffff8e245cb11000(0000) knlGS:0000000000000000 [ 2.395412] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.395477] CR2: 00007fff60c2d968 CR3: 0000000005d25003 CR4: 0000000000772ef0 [ 2.395559] PKRU: 55555554 [ 2.395585] Call Trace: [ 2.395614] [ 2.395638] netdev_run_todo+0x21a/0x550 [ 2.395686] ops_undo_list+0x1e3/0x1f0 [ 2.395734] cleanup_net+0x1b7/0x300 [ 2.395782] process_one_work+0x162/0x380 [ 2.395831] worker_thread+0x299/0x3c0 [ 2.395871] ? rescuer_thread+0x4c0/0x4c0 [ 2.395909] kthread+0x101/0x1f0 [ 2.395950] ? kthreads_online_cpu+0x110/0x110 [ 2.396004] ? kthreads_online_cpu+0x110/0x110 [ 2.396058] ret_from_fork+0x11c/0x140 [ 2.396110] ? kthreads_online_cpu+0x110/0x110 [ 2.396169] ret_from_fork_asm+0x11/0x20 [ 2.396219] [ 2.396247] ---[ end trace 0000000000000000 ]---