diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index e01d52cb668c..d8badb2a28cd 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1393,18 +1393,20 @@ void hci_conn_failed(struct hci_conn *conn, u8 status);
 
 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
 {
+	BT_DBG("hcon %p orig kobj.refcount %d", conn, kref_read(&conn->dev.kobj.kref));
 	get_device(&conn->dev);
 	return conn;
 }
 
 static inline void hci_conn_put(struct hci_conn *conn)
 {
+	BT_DBG("hcon %p orig kobj.refcount %d", conn, kref_read(&conn->dev.kobj.kref));
 	put_device(&conn->dev);
 }
 
 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
 {
-	BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
+	BT_DBG("hcon %p orig conn->refcnt %d", conn, atomic_read(&conn->refcnt));
 
 	atomic_inc(&conn->refcnt);
 	cancel_delayed_work(&conn->disc_work);
@@ -1414,7 +1416,7 @@ static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
 
 static inline void hci_conn_drop(struct hci_conn *conn)
 {
-	BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
+	BT_DBG("hcon %p orig conn->refcnt %d", conn, atomic_read(&conn->refcnt));
 
 	if (atomic_dec_and_test(&conn->refcnt)) {
 		unsigned long timeo;
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 76222565e2df..23e635600717 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -143,6 +143,8 @@ static void hci_conn_cleanup(struct hci_conn *conn)
 {
 	struct hci_dev *hdev = conn->hdev;
 
+	BT_DBG("%s hcon %p", hdev->name, conn);
+
 	if (test_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags))
 		hci_conn_params_del(conn->hdev, &conn->dst, conn->dst_type);
 
@@ -994,6 +996,8 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 	if (!conn)
 		return NULL;
 
+	BT_DBG("hcon %p=kzalloc()", conn);
+
 	bacpy(&conn->dst, dst);
 	bacpy(&conn->src, &hdev->bdaddr);
 	conn->handle = HCI_CONN_HANDLE_UNSET;
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 15b33579007c..fc297b651881 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -13,6 +13,9 @@ static const struct class bt_class = {
 static void bt_link_release(struct device *dev)
 {
 	struct hci_conn *conn = to_hci_conn(dev);
+
+	BT_DBG("kfree(conn %p)", conn);
+
 	kfree(conn);
 }
 
@@ -67,6 +70,8 @@ void hci_conn_del_sysfs(struct hci_conn *conn)
 {
 	struct hci_dev *hdev = conn->hdev;
 
+	BT_DBG("conn %p", conn);
+
 	if (!device_is_registered(&conn->dev))
 		return;
 
@@ -80,6 +85,7 @@ void hci_conn_del_sysfs(struct hci_conn *conn)
 		put_device(dev);
 	}
 
+	BT_DBG("calling device_del %p", conn);
 	device_del(&conn->dev);
 
 	hci_dev_put(hdev);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 17ca13e8c044..c749b434df97 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1945,12 +1945,16 @@ static void l2cap_conn_free(struct kref *ref)
 {
 	struct l2cap_conn *conn = container_of(ref, struct l2cap_conn, ref);
 
+	BT_DBG("kfree(conn) %p", conn);
+
 	hci_conn_put(conn->hcon);
 	kfree(conn);
 }
 
 struct l2cap_conn *l2cap_conn_get(struct l2cap_conn *conn)
 {
+	BT_DBG("conn %p, refcount %d", conn, kref_read(&conn->ref));
+
 	kref_get(&conn->ref);
 	return conn;
 }
@@ -1958,6 +1962,8 @@ EXPORT_SYMBOL(l2cap_conn_get);
 
 void l2cap_conn_put(struct l2cap_conn *conn)
 {
+	BT_DBG("conn %p, refcount %d", conn, kref_read(&conn->ref));
+
 	kref_put(&conn->ref, l2cap_conn_free);
 }
 EXPORT_SYMBOL(l2cap_conn_put);
@@ -7835,8 +7841,10 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon)
 	struct l2cap_conn *conn = hcon->l2cap_data;
 	struct hci_chan *hchan;
 
-	if (conn)
+	if (conn) {
+		BT_DBG("hcon %p reuse conn %p", hcon, conn);
 		return conn;
+	}
 
 	hchan = hci_chan_create(hcon);
 	if (!hchan)
@@ -7853,7 +7861,7 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon)
 	conn->hcon = hci_conn_get(hcon);
 	conn->hchan = hchan;
 
-	BT_DBG("hcon %p conn %p hchan %p", hcon, conn, hchan);
+	BT_DBG("hcon %p conn %p=kzalloc() hchan %p", hcon, conn, hchan);
 
 	switch (hcon->type) {
 	case LE_LINK:
