diff --git a/components/bt/common/osi/fixed_queue.c b/components/bt/common/osi/fixed_queue.c
index b346d2d806..06ceef4391 100644
--- a/components/bt/common/osi/fixed_queue.c
+++ b/components/bt/common/osi/fixed_queue.c
@@ -129,6 +129,8 @@ size_t fixed_queue_capacity(fixed_queue_t *queue)
 
 bool fixed_queue_enqueue(fixed_queue_t *queue, void *data, uint32_t timeout)
 {
+    bool status=false; //Flag whether enqueued success
+
     assert(queue != NULL);
     assert(data != NULL);
 
@@ -137,13 +139,13 @@ bool fixed_queue_enqueue(fixed_queue_t *queue, void *data, uint32_t timeout)
     }
 
     osi_mutex_lock(&queue->lock, OSI_MUTEX_MAX_TIMEOUT);
-
-    list_append(queue->list, data);
+    status = list_append(queue->list, data); //Check whether enqueued success 
     osi_mutex_unlock(&queue->lock);
 
-    osi_sem_give(&queue->dequeue_sem);
+    if(status == true )
+        osi_sem_give(&queue->dequeue_sem);
 
-    return true;
+    return status;
 }
 
 void *fixed_queue_dequeue(fixed_queue_t *queue, uint32_t timeout)
diff --git a/components/bt/common/osi/list.c b/components/bt/common/osi/list.c
index 730fe4e97a..93db17fb38 100644
--- a/components/bt/common/osi/list.c
+++ b/components/bt/common/osi/list.c
@@ -102,6 +102,7 @@ bool list_insert_after(list_t *list, list_node_t *prev_node, void *data) {
     assert(data != NULL);
     list_node_t *node = (list_node_t *)osi_calloc(sizeof(list_node_t));
     if (!node) {
+        OSI_TRACE_ERROR("%s osi_calloc failed.\n", __FUNCTION__ );
         return false;
     }
     node->next = prev_node->next;
@@ -120,6 +121,7 @@ bool list_prepend(list_t *list, void *data)
     assert(data != NULL);
     list_node_t *node = (list_node_t *)osi_calloc(sizeof(list_node_t));
     if (!node) {
+        OSI_TRACE_ERROR("%s osi_calloc failed.\n", __FUNCTION__ );
         return false;
     }
     node->next = list->head;
@@ -138,6 +140,7 @@ bool list_append(list_t *list, void *data)
     assert(data != NULL);
     list_node_t *node = (list_node_t *)osi_calloc(sizeof(list_node_t));
     if (!node) {
+        OSI_TRACE_ERROR("%s osi_calloc failed.\n", __FUNCTION__ );
         return false;
     }
     node->next = NULL;