diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 89ecf0a80aa1..d12e27f846a2 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1029,6 +1029,9 @@ static inline void hci_dev_put(struct hci_dev *d)
 {
 	BT_DBG("%s orig refcnt %d", d->name,
 	       kref_read(&d->dev.kobj.kref));
+	printk("%s orig refcnt %d, %s\n", d->name,
+	       kref_read(&d->dev.kobj.kref), __func__);
+	show_stack(NULL, NULL);
 
 	put_device(&d->dev);
 }
@@ -1037,6 +1040,9 @@ static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 {
 	BT_DBG("%s orig refcnt %d", d->name,
 	       kref_read(&d->dev.kobj.kref));
+	printk("%s orig refcnt %d, %s\n", d->name,
+	       kref_read(&d->dev.kobj.kref), __func__);
+	show_stack(NULL, NULL);
 
 	get_device(&d->dev);
 	return d;