[TD-4987]<fix>: issues memory sanitizier detected. (#6675)

src/client/src/tscServer.c

@@ -460,8 +460,8 @@ void tscProcessMsgFromServer(SRpcMsg *rpcMsg, SRpcEpSet *pEpSet) {
   
 
   if (shouldFree) { // in case of table-meta/vgrouplist query, automatically free it
-    taosRemoveRef(tscObjRef, handle);
     tscDebug("0x%"PRIx64" sqlObj is automatically freed", pSql->self);
+    taosRemoveRef(tscObjRef, handle);
   }
 
   taosReleaseRef(tscObjRef, handle);

src/kit/taosdemo/taosdemo.c

@@ -636,6 +636,9 @@ static FILE *          g_fpOfInsertResult = NULL;
 #define errorPrint(fmt, ...) \
     do { fprintf(stderr, "ERROR: "fmt, __VA_ARGS__); } while(0)
 
+// for strncpy buffer overflow
+#define min(a, b) (((a) < (b)) ? (a) : (b))
+
 
 ///////////////////////////////////////////////////
 
@@ -2570,7 +2573,7 @@ static int getSuperTableFromServer(TAOS * taos, char* dbName,
               fields[TSDB_DESCRIBE_METRIC_FIELD_INDEX].bytes);
       tstrncpy(superTbls->tags[tagIndex].dataType,
               (char *)row[TSDB_DESCRIBE_METRIC_TYPE_INDEX],
-              fields[TSDB_DESCRIBE_METRIC_TYPE_INDEX].bytes);
+              min(15, fields[TSDB_DESCRIBE_METRIC_TYPE_INDEX].bytes));
       superTbls->tags[tagIndex].dataLen =
           *((int *)row[TSDB_DESCRIBE_METRIC_LENGTH_INDEX]);
       tstrncpy(superTbls->tags[tagIndex].note,
@@ -2583,7 +2586,7 @@ static int getSuperTableFromServer(TAOS * taos, char* dbName,
               fields[TSDB_DESCRIBE_METRIC_FIELD_INDEX].bytes);
       tstrncpy(superTbls->columns[columnIndex].dataType,
               (char *)row[TSDB_DESCRIBE_METRIC_TYPE_INDEX],
-              fields[TSDB_DESCRIBE_METRIC_TYPE_INDEX].bytes);
+              min(15, fields[TSDB_DESCRIBE_METRIC_TYPE_INDEX].bytes));
       superTbls->columns[columnIndex].dataLen =
           *((int *)row[TSDB_DESCRIBE_METRIC_LENGTH_INDEX]);
       tstrncpy(superTbls->columns[columnIndex].note,

src/mnode/src/mnodeTable.c

@@ -1060,7 +1060,9 @@ static int32_t mnodeProcessCreateSuperTableMsg(SMnodeMsg *pMsg) {
   pStable->info.tableId = strdup(pCreate->tableName);
   pStable->info.type    = TSDB_SUPER_TABLE;
   pStable->createdTime  = taosGetTimestampMs();
-  pStable->uid          = (us << 24) + ((sdbGetVersion() & ((1ul << 16) - 1ul)) << 8) + (taosRand() & ((1ul << 8) - 1ul));
+  int64_t x = (us&0x000000FFFFFFFFFF);
+  x = x<<24;
+  pStable->uid          = x + ((sdbGetVersion() & ((1ul << 16) - 1ul)) << 8) + (taosRand() & ((1ul << 8) - 1ul));
   pStable->sversion     = 0;
   pStable->tversion     = 0;
   pStable->numOfColumns = numOfColumns;