[ 5.359791] ------------[ cut here ]------------ [ 5.359863] refcount_t: underflow; use-after-free. [ 5.359933] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 5.360022] Modules linked in: [ 5.360066] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 5.360160] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5.360224] Workqueue: netns cleanup_net [ 5.360279] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 5.360334] Code: 96 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 95 96 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 [ 5.360508] RSP: 0018:ffffb26000067d50 EFLAGS: 00010286 [ 5.360558] RAX: 0000000000000000 RBX: ffffb26000067d60 RCX: 00000000ffffdfff [ 5.360634] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 5.360715] RBP: ffffb26000067858 R08: ffffffff9715ba28 R09: 00000000ffffdfff [ 5.360791] R10: ffffffff9707ba40 R11: ffffffff9712ba40 R12: dead000000000122 [ 5.360849] R13: 00000000fffb8087 R14: 0000000000000001 R15: ffff95e1c4dd5000 [ 5.360901] FS: 0000000000000000(0000) GS:ffff95e267391000(0000) knlGS:0000000000000000 [ 5.360957] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.361022] CR2: 00007ff414af3800 CR3: 0000000003332006 CR4: 0000000000772ef0 [ 5.361083] PKRU: 55555554 [ 5.361099] Call Trace: [ 5.361118] [ 5.361138] netdev_run_todo+0x21a/0x550 [ 5.361172] ops_undo_list+0x1e3/0x1f0 [ 5.361206] cleanup_net+0x1b7/0x300 [ 5.361248] process_one_work+0x162/0x380 [ 5.361296] worker_thread+0x299/0x3c0 [ 5.361324] ? rescuer_thread+0x4c0/0x4c0 [ 5.361355] kthread+0x101/0x1f0 [ 5.361386] ? kthreads_online_cpu+0x110/0x110 [ 5.361424] ? kthreads_online_cpu+0x110/0x110 [ 5.361480] ret_from_fork+0x11c/0x140 [ 5.361525] ? kthreads_online_cpu+0x110/0x110 [ 5.361569] ret_from_fork_asm+0x11/0x20 [ 5.361602] [ 5.361623] ---[ end trace 0000000000000000 ]---