diff --git a/src/tsdb/src/tsdbMeta.c b/src/tsdb/src/tsdbMeta.c
index b4dfe481902b25576439fd8d531539510694868b..f22a2c093fcd673d5bfb025266375b8e6f1a02b9 100644
--- a/src/tsdb/src/tsdbMeta.c
+++ b/src/tsdb/src/tsdbMeta.c
@@ -415,6 +415,7 @@ int tsdbCloseMeta(STsdbRepo *pRepo) {
   while ((pNode = tdListPopHead(pMeta->superList)) != NULL) {
     tdListNodeGetData(pMeta->superList, pNode, (void *)(&pTable));
     tsdbFreeTable(pTable);
+    listNodeFree(pNode);
   }
 
   tsdbTrace("vgId:%d TSDB meta is closed", REPO_ID(pRepo));
diff --git a/src/util/src/tlist.c b/src/util/src/tlist.c
index 9e90815f611c8b09f8729b6453d639f30c0f321a..f402c2307e68cee6100a28e53dce1935af44fb3f 100644
--- a/src/util/src/tlist.c
+++ b/src/util/src/tlist.c
@@ -83,7 +83,7 @@ int tdListPrepend(SList *list, void *data) {
 }
 
 int tdListAppend(SList *list, void *data) {
-  SListNode *node = (SListNode *)malloc(sizeof(SListNode) + list->eleSize);
+  SListNode *node = (SListNode *)calloc(1, sizeof(SListNode) + list->eleSize);
   if (node == NULL) return -1;
 
   memcpy((void *)(node->data), data, list->eleSize);