diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index 9f21ee007f..748bd6afcc 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -1902,7 +1902,7 @@ static FORCE_INLINE SMqRebInfo* tNewSMqRebSubscribe(const char* key) {
   if (pRebInfo == NULL) {
     return NULL;
   }
-  strcpy(pRebInfo->key, key);
+  tstrncpy(pRebInfo->key, key, sizeof(pRebInfo->key));
   pRebInfo->lostConsumers = taosArrayInit(0, sizeof(int64_t));
   if (pRebInfo->lostConsumers == NULL) {
     goto _err;
diff --git a/source/client/src/clientHb.c b/source/client/src/clientHb.c
index 096e2cdac8..3f24a08cf4 100644
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@@ -173,7 +173,7 @@ static int32_t hbQueryHbRspHandle(SAppHbMgr *pAppHbMgr, SClientHbRsp *pRsp) {
       pTscObj->pAppInfo->totalDnodes = pRsp->query->totalDnodes;
       pTscObj->pAppInfo->onlineDnodes = pRsp->query->onlineDnodes;
       pTscObj->connId = pRsp->query->connId;
-      tscTrace("conn %p hb rsp, dnodes %d/%d", pTscObj->connId, pTscObj->pAppInfo->onlineDnodes,
+      tscTrace("conn %u hb rsp, dnodes %d/%d", pTscObj->connId, pTscObj->pAppInfo->onlineDnodes,
                pTscObj->pAppInfo->totalDnodes);
 
       if (pRsp->query->killRid) {
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 940dd745c8..b494140da5 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -186,7 +186,7 @@ int32_t buildRequest(uint64_t connId, const char* sql, int sqlLen, void* param,
   STscObj* pTscObj = (*pRequest)->pTscObj;
   if (taosHashPut(pTscObj->pRequests, &(*pRequest)->self, sizeof((*pRequest)->self), &(*pRequest)->self,
                   sizeof((*pRequest)->self))) {
-    tscError("%d failed to add to request container, reqId:0x%" PRIx64 ", conn:%d, %s", (*pRequest)->self,
+    tscError("%" PRIx64 " failed to add to request container, reqId:0x%" PRIu64 ", conn:%" PRIx64 ", %s", (*pRequest)->self,
              (*pRequest)->requestId, pTscObj->id, sql);
 
     taosMemoryFree(param);
@@ -371,7 +371,7 @@ int32_t updateQnodeList(SAppInstInfo* pInfo, SArray* pNodeList) {
     pInfo->pQnodeList = taosArrayDup(pNodeList);
     taosArraySort(pInfo->pQnodeList, compareQueryNodeLoad);
     tscDebug("QnodeList updated in cluster 0x%" PRIx64 ", num:%d", pInfo->clusterId,
-             taosArrayGetSize(pInfo->pQnodeList));
+             (int)taosArrayGetSize(pInfo->pQnodeList));
   }
   taosThreadMutexUnlock(&pInfo->qnodeMutex);
 
diff --git a/source/client/src/clientRawBlockWrite.c b/source/client/src/clientRawBlockWrite.c
index a257335931..1dc319be94 100644
--- a/source/client/src/clientRawBlockWrite.c
+++ b/source/client/src/clientRawBlockWrite.c
@@ -410,6 +410,7 @@ static char* processAlterTable(SMqMetaRsp* metaRsp) {
   SDecoder     decoder = {0};
   SVAlterTbReq vAlterTbReq = {0};
   char*        string = NULL;
+  cJSON*       json   = NULL;
 
   // decode
   void*   data = POINTER_SHIFT(metaRsp->metaRsp, sizeof(SMsgHead));
@@ -419,7 +420,7 @@ static char* processAlterTable(SMqMetaRsp* metaRsp) {
     goto _exit;
   }
 
-  cJSON* json = cJSON_CreateObject();
+  json = cJSON_CreateObject();
   if (json == NULL) {
     goto _exit;
   }
@@ -524,6 +525,7 @@ static char* processDropSTable(SMqMetaRsp* metaRsp) {
   SDecoder     decoder = {0};
   SVDropStbReq req = {0};
   char*        string = NULL;
+  cJSON*       json   = NULL;
 
   // decode
   void*   data = POINTER_SHIFT(metaRsp->metaRsp, sizeof(SMsgHead));
@@ -533,7 +535,7 @@ static char* processDropSTable(SMqMetaRsp* metaRsp) {
     goto _exit;
   }
 
-  cJSON* json = cJSON_CreateObject();
+  json = cJSON_CreateObject();
   if (json == NULL) {
     goto _exit;
   }
@@ -556,6 +558,7 @@ static char* processDropTable(SMqMetaRsp* metaRsp) {
   SDecoder         decoder = {0};
   SVDropTbBatchReq req = {0};
   char*            string = NULL;
+  cJSON*           json   = NULL;
 
   // decode
   void*   data = POINTER_SHIFT(metaRsp->metaRsp, sizeof(SMsgHead));
@@ -565,7 +568,7 @@ static char* processDropTable(SMqMetaRsp* metaRsp) {
     goto _exit;
   }
 
-  cJSON* json = cJSON_CreateObject();
+  json = cJSON_CreateObject();
   if (json == NULL) {
     goto _exit;
   }
@@ -684,7 +687,7 @@ end:
 
 static int32_t taosDropStb(TAOS* taos, void* meta, int32_t metaLen) {
   SVDropStbReq req = {0};
-  SDecoder     coder;
+  SDecoder     coder = {0};
   SMDropStbReq pReq = {0};
   int32_t      code = TSDB_CODE_SUCCESS;
   SRequestObj* pRequest = NULL;
@@ -1212,6 +1215,7 @@ int taos_write_raw_block(TAOS* taos, int rows, char* pData, const char* tbname)
   int32_t     code = TSDB_CODE_SUCCESS;
   STableMeta* pTableMeta = NULL;
   SQuery*     pQuery = NULL;
+  SSubmitReq* subReq = NULL;
 
   SRequestObj* pRequest = (SRequestObj*)createRequest(*(int64_t*)taos, TSDB_SQL_INSERT);
   if (!pRequest) {
@@ -1228,8 +1232,8 @@ int taos_write_raw_block(TAOS* taos, int rows, char* pData, const char* tbname)
   }
 
   SName pName = {TSDB_TABLE_NAME_T, pRequest->pTscObj->acctId, {0}, {0}};
-  strcpy(pName.dbname, pRequest->pDb);
-  strcpy(pName.tname, tbname);
+  tstrncpy(pName.dbname, pRequest->pDb, sizeof(pName.dbname));
+  tstrncpy(pName.tname, tbname, sizeof(pName.tname));
 
   struct SCatalog* pCatalog = NULL;
   code = catalogGetHandle(pRequest->pTscObj->pAppInfo->clusterId, &pCatalog);
@@ -1278,7 +1282,7 @@ int taos_write_raw_block(TAOS* taos, int rows, char* pData, const char* tbname)
   int32_t submitLen = sizeof(SSubmitBlk) + schemaLen + rows * extendedRowSize;
 
   int32_t     totalLen = sizeof(SSubmitReq) + submitLen;
-  SSubmitReq* subReq = taosMemoryCalloc(1, totalLen);
+  subReq = taosMemoryCalloc(1, totalLen);
   SSubmitBlk* blk = POINTER_SHIFT(subReq, sizeof(SSubmitReq));
   void*       blkSchema = POINTER_SHIFT(blk, sizeof(SSubmitBlk));
   STSRow*     rowData = POINTER_SHIFT(blkSchema, schemaLen);
@@ -1352,6 +1356,7 @@ int taos_write_raw_block(TAOS* taos, int rows, char* pData, const char* tbname)
   if (NULL == pQuery) {
     uError("create SQuery error");
     code = TSDB_CODE_OUT_OF_MEMORY;
+    taosMemoryFree(subReq);
     goto end;
   }
   pQuery->execMode = QUERY_EXEC_MODE_SCHEDULE;
@@ -1390,6 +1395,7 @@ int taos_write_raw_block(TAOS* taos, int rows, char* pData, const char* tbname)
 end:
   taosMemoryFreeClear(pTableMeta);
   qDestroyQuery(pQuery);
+  taosMemoryFree(subReq);
   return code;
 }
 
diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index 24da5f7b70..5c37822222 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -299,6 +299,7 @@ static int32_t smlCheckMeta(SSchema *schema, int32_t length, SArray *cols, bool
   for (; i < taosArrayGetSize(cols); i++) {
     SSmlKv *kv = (SSmlKv *)taosArrayGetP(cols, i);
     if (taosHashGet(hashTmp, kv->key, kv->keyLen) == NULL) {
+      taosHashCleanup(hashTmp);
       return -1;
     }
   }
@@ -430,7 +431,7 @@ static int32_t smlModifyDBSchemas(SSmlHandle *info) {
   STableMeta *pTableMeta = NULL;
 
   SName pName = {TSDB_TABLE_NAME_T, info->taos->acctId, {0}, {0}};
-  strcpy(pName.dbname, info->pRequest->pDb);
+  tstrncpy(pName.dbname, info->pRequest->pDb, sizeof(pName.dbname));
 
   SRequestConnInfo conn = {0};
   conn.pTrans = info->taos->pAppInfo->pTransporter;
@@ -874,7 +875,8 @@ static int32_t smlParseTS(SSmlHandle *info, const char *data, int32_t len, SArra
   kv->i = ts;
   kv->type = TSDB_DATA_TYPE_TIMESTAMP;
   kv->length = (int16_t)tDataTypes[kv->type].bytes;
-  if (cols) taosArrayPush(cols, &kv);
+  taosArrayPush(cols, &kv);
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -1009,6 +1011,7 @@ static void smlParseTelnetElement(const char **sql, const char **data, int32_t *
 
 static int32_t smlParseTelnetTags(const char *data, SArray *cols, char *childTableName, SHashObj *dumplicateKey,
                                   SSmlMsgBuf *msg) {
+  if(!cols) return TSDB_CODE_OUT_OF_MEMORY;
   const char *sql = data;
   size_t      childTableNameLen = strlen(tsSmlChildTableName);
   while (*sql != '\0') {
@@ -1082,7 +1085,7 @@ static int32_t smlParseTelnetTags(const char *data, SArray *cols, char *childTab
     kv->length = valueLen;
     kv->type = TSDB_DATA_TYPE_NCHAR;
 
-    if (cols) taosArrayPush(cols, &kv);
+    taosArrayPush(cols, &kv);
   }
 
   return TSDB_CODE_SUCCESS;
@@ -1370,8 +1373,14 @@ static int32_t smlKvTimeHashCompare(const void *key1, const void *key2) {
   SHashObj *s2 = *(SHashObj **)key2;
   SSmlKv   *kv1 = *(SSmlKv **)taosHashGet(s1, TS, TS_LEN);
   SSmlKv   *kv2 = *(SSmlKv **)taosHashGet(s2, TS, TS_LEN);
-  ASSERT(kv1->type == TSDB_DATA_TYPE_TIMESTAMP);
-  ASSERT(kv2->type == TSDB_DATA_TYPE_TIMESTAMP);
+  if(!kv1 || kv1->type != TSDB_DATA_TYPE_TIMESTAMP){
+    uError("smlKvTimeHashCompare kv1");
+    return -1;
+  }
+  if(!kv2 || kv2->type != TSDB_DATA_TYPE_TIMESTAMP){
+    uError("smlKvTimeHashCompare kv2");
+    return -1;
+  }
   if (kv1->i < kv2->i) {
     return -1;
   } else if (kv1->i > kv2->i) {
@@ -1735,7 +1744,7 @@ static int32_t smlParseTSFromJSON(SSmlHandle *info, cJSON *root, SArray *cols) {
   kv->i = tsVal;
   kv->type = TSDB_DATA_TYPE_TIMESTAMP;
   kv->length = (int16_t)tDataTypes[kv->type].bytes;
-  if (cols) taosArrayPush(cols, &kv);
+  taosArrayPush(cols, &kv);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -1932,6 +1941,7 @@ static int32_t smlParseValueFromJSON(cJSON *root, SSmlKv *kv) {
 }
 
 static int32_t smlParseColsFromJSON(cJSON *root, SArray *cols) {
+  if(!cols) return TSDB_CODE_OUT_OF_MEMORY;
   cJSON *metricVal = cJSON_GetObjectItem(root, "value");
   if (metricVal == NULL) {
     return TSDB_CODE_TSC_INVALID_JSON;
@@ -1941,7 +1951,7 @@ static int32_t smlParseColsFromJSON(cJSON *root, SArray *cols) {
   if (!kv) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
-  if (cols) taosArrayPush(cols, &kv);
+  taosArrayPush(cols, &kv);
 
   kv->key = VALUE;
   kv->keyLen = VALUE_LEN;
@@ -1955,7 +1965,9 @@ static int32_t smlParseColsFromJSON(cJSON *root, SArray *cols) {
 static int32_t smlParseTagsFromJSON(cJSON *root, SArray *pKVs, char *childTableName, SHashObj *dumplicateKey,
                                     SSmlMsgBuf *msg) {
   int32_t ret = TSDB_CODE_SUCCESS;
-
+  if (!pKVs){
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
   cJSON *tags = cJSON_GetObjectItem(root, "tags");
   if (tags == NULL || tags->type != cJSON_Object) {
     return TSDB_CODE_TSC_INVALID_JSON;
@@ -1985,14 +1997,14 @@ static int32_t smlParseTagsFromJSON(cJSON *root, SArray *pKVs, char *childTableN
         return TSDB_CODE_TSC_INVALID_JSON;
       }
       memset(childTableName, 0, TSDB_TABLE_NAME_LEN);
-      strncpy(childTableName, tag->valuestring, TSDB_TABLE_NAME_LEN);
+      tstrncpy(childTableName, tag->valuestring, TSDB_TABLE_NAME_LEN);
       continue;
     }
 
     // add kv to SSmlKv
     SSmlKv *kv = (SSmlKv *)taosMemoryCalloc(sizeof(SSmlKv), 1);
     if (!kv) return TSDB_CODE_OUT_OF_MEMORY;
-    if (pKVs) taosArrayPush(pKVs, &kv);
+    taosArrayPush(pKVs, &kv);
 
     // key
     kv->keyLen = keyLen;
@@ -2103,6 +2115,8 @@ static int32_t smlParseInfluxLine(SSmlHandle *info, const char *sql) {
   if (!oneTable) {
     tinfo = smlBuildTableInfo();
     if (!tinfo) {
+      smlDestroyCols(cols);
+      if (info->dataFormat) taosArrayDestroy(cols);
       return TSDB_CODE_TSC_OUT_OF_MEMORY;
     }
     taosHashPut(info->childTables, elements.measure, elements.measureTagsLen, &tinfo, POINTER_BYTES);
@@ -2295,7 +2309,7 @@ static int32_t smlInsertData(SSmlHandle *info) {
     SSmlTableInfo *tableData = *oneTable;
 
     SName pName = {TSDB_TABLE_NAME_T, info->taos->acctId, {0}, {0}};
-    strcpy(pName.dbname, info->pRequest->pDb);
+    tstrncpy(pName.dbname, info->pRequest->pDb, sizeof(pName.dbname));
     memcpy(pName.tname, tableData->childTableName, strlen(tableData->childTableName));
 
     SRequestConnInfo conn = {0};
diff --git a/source/client/src/clientStmt.c b/source/client/src/clientStmt.c
index 7a800bd334..bf3fd00f14 100644
--- a/source/client/src/clientStmt.c
+++ b/source/client/src/clientStmt.c
@@ -201,6 +201,9 @@ int32_t stmtCacheBlock(STscStmt* pStmt) {
   }
 
   STableDataBlocks** pSrc = taosHashGet(pStmt->exec.pBlockHash, pStmt->bInfo.tbFName, strlen(pStmt->bInfo.tbFName));
+  if(!pSrc){
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
   STableDataBlocks*  pDst = NULL;
 
   STMT_ERR_RET(qCloneStmtDataBlock(&pDst, *pSrc));
diff --git a/source/client/src/clientTmq.c b/source/client/src/clientTmq.c
index 51005e3c30..02aa7b806c 100644
--- a/source/client/src/clientTmq.c
+++ b/source/client/src/clientTmq.c
@@ -871,8 +871,7 @@ tmq_t* tmq_consumer_new(tmq_conf_t* conf, char* errstr, int32_t errstrLen) {
   tmq_t* pTmq = taosMemoryCalloc(1, sizeof(tmq_t));
   if (pTmq == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
-    tscError("consumer %" PRId64 " setup failed since %s, consumer group %s", pTmq->consumerId, terrstr(),
-             pTmq->groupId);
+    tscError("consumer setup failed since %s", terrstr());
     return NULL;
   }
 
diff --git a/source/common/src/tdataformat.c b/source/common/src/tdataformat.c
index ad5772e0fe..269e72f151 100644
--- a/source/common/src/tdataformat.c
+++ b/source/common/src/tdataformat.c
@@ -916,6 +916,10 @@ char *tTagValToData(const STagVal *value, bool isJson) {
 }
 
 bool tTagGet(const STag *pTag, STagVal *pTagVal) {
+  if(!pTag || !pTagVal){
+    return false;
+  }
+
   int16_t  lidx = 0;
   int16_t  ridx = pTag->nTag - 1;
   int16_t  midx;
diff --git a/tools/taosws-rs b/tools/taosws-rs
new file mode 160000
index 0000000000..7a94ffab45
--- /dev/null
+++ b/tools/taosws-rs
@@ -0,0 +1 @@
+Subproject commit 7a94ffab45f08e16f09b3f430fe75d717054adb6
diff --git a/utils/test/c/sml_test.c b/utils/test/c/sml_test.c
index 56ba622a9c..b6d8d75ba0 100644
--- a/utils/test/c/sml_test.c
+++ b/utils/test/c/sml_test.c
@@ -119,7 +119,7 @@ int smlProcess_json1_Test() {
       "           \"dc\": \"lga\""
       "        }"
       "    }"
-      "]"};
+      "]",};
   pRes = taos_schemaless_insert(taos, (char **)sql, sizeof(sql) / sizeof(sql[0]), TSDB_SML_JSON_PROTOCOL,
                                 TSDB_SML_TIMESTAMP_NANO_SECONDS);
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
@@ -159,7 +159,7 @@ int smlProcess_json2_Test() {
       "       },"
       "       \"id\": \"d1001\""
       "    }"
-      "}"};
+      "}",};
   pRes = taos_schemaless_insert(taos, (char **)sql, sizeof(sql) / sizeof(sql[0]), TSDB_SML_JSON_PROTOCOL,
                                 TSDB_SML_TIMESTAMP_NANO_SECONDS);
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
@@ -227,7 +227,7 @@ int smlProcess_json3_Test() {
       "       },"
       "       \"id\": \"d1001\""
       "    }"
-      "}"};
+      "}",};
   pRes = taos_schemaless_insert(taos, (char **)sql, sizeof(sql) / sizeof(sql[0]), TSDB_SML_JSON_PROTOCOL,
                                 TSDB_SML_TIMESTAMP_NANO_SECONDS);
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
@@ -286,7 +286,7 @@ int smlProcess_json4_Test() {
       "       \"t9\": false,"
       "       \"id\": \"d1001\""
       "    }"
-      "}"};
+      "}",};
   pRes = taos_schemaless_insert(taos, (char **)sql, sizeof(sql) / sizeof(sql[0]), TSDB_SML_JSON_PROTOCOL,
                                 TSDB_SML_TIMESTAMP_NANO_SECONDS);
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
diff --git a/utils/test/c/tmqSim.c b/utils/test/c/tmqSim.c
index a043aa7a6d..d36fe0855a 100644
--- a/utils/test/c/tmqSim.c
+++ b/utils/test/c/tmqSim.c
@@ -155,7 +155,7 @@ static void printHelp() {
 
 
   printf("%s%s\n", indent, "-l");
-  printf("%s%s%s\n", indent, indent, "run duration unit is minutes, default is ", g_stConfInfo.runDurationMinutes);
+  printf("%s%s%s%d\n", indent, indent, "run duration unit is minutes, default is ", g_stConfInfo.runDurationMinutes);
   printf("%s%s\n", indent, "-p");
   printf("%s%s%s\n", indent, indent, "producer thread number, default is 0");
   printf("%s%s\n", indent, "-b");
@@ -238,7 +238,7 @@ void saveConfigToLogFile() {
       taosFprintfFile(g_fp, "%s:%s, ", g_stConfInfo.stThreads[i].key[k], g_stConfInfo.stThreads[i].value[k]);
     }
     taosFprintfFile(g_fp, "\n");
-    taosFprintfFile(g_fp, "  expect rows: %d\n", g_stConfInfo.stThreads[i].expectMsgCnt);
+    taosFprintfFile(g_fp, "  expect rows: %" PRIx64 "\n", g_stConfInfo.stThreads[i].expectMsgCnt);
   }
 
   char tmpString[128];
@@ -263,11 +263,11 @@ void parseArgument(int32_t argc, char* argv[]) {
       printHelp();
       exit(0);
     } else if (strcmp(argv[i], "-d") == 0) {
-      strcpy(g_stConfInfo.dbName, argv[++i]);
+      tstrncpy(g_stConfInfo.dbName, argv[++i], sizeof(g_stConfInfo.dbName));
     } else if (strcmp(argv[i], "-w") == 0) {
-      strcpy(g_stConfInfo.cdbName, argv[++i]);
+      tstrncpy(g_stConfInfo.cdbName, argv[++i], sizeof(g_stConfInfo.cdbName));
     } else if (strcmp(argv[i], "-c") == 0) {
-      strcpy(configDir, argv[++i]);
+      tstrncpy(configDir, argv[++i], PATH_MAX);
     } else if (strcmp(argv[i], "-g") == 0) {
       g_stConfInfo.showMsgFlag = atol(argv[++i]);
     } else if (strcmp(argv[i], "-r") == 0) {
@@ -279,9 +279,9 @@ void parseArgument(int32_t argc, char* argv[]) {
     } else if (strcmp(argv[i], "-e") == 0) {
       g_stConfInfo.useSnapshot = atol(argv[++i]);
     } else if (strcmp(argv[i], "-t") == 0) {
-	  char tmpBuf[56];
-      strcpy(tmpBuf, argv[++i]);
-	  sprintf(g_stConfInfo.topic, "`%s`", tmpBuf);
+      char tmpBuf[56] = {0};
+      tstrncpy(tmpBuf, argv[++i], sizeof(tmpBuf));
+      sprintf(g_stConfInfo.topic, "`%s`", tmpBuf);
     } else if (strcmp(argv[i], "-x") == 0) {
       g_stConfInfo.numOfThread = atol(argv[++i]);
     } else if (strcmp(argv[i], "-l") == 0) {
@@ -294,6 +294,10 @@ void parseArgument(int32_t argc, char* argv[]) {
       g_stConfInfo.producerRate = atol(argv[++i]);
     } else if (strcmp(argv[i], "-n") == 0) {
       g_stConfInfo.payloadLen = atol(argv[++i]);
+      if(g_stConfInfo.payloadLen <= 0 || g_stConfInfo.payloadLen > 1024 * 1024 * 1024){
+        pError("%s calloc size is too large: %s %s", GREEN, argv[++i], NC);
+        exit(-1);
+      }
     } else {
       pError("%s unknow para: %s %s", GREEN, argv[++i], NC);
       exit(-1);
@@ -354,8 +358,8 @@ void ltrim(char* str) {
 
 int queryDB(TAOS* taos, char* command) {
   int        retryCnt = 10;
-  int        code;
-  TAOS_RES*  pRes;
+  int        code = 0;
+  TAOS_RES*  pRes = NULL;
 
   while (retryCnt--) {
     pRes = taos_query(taos, command);
@@ -363,10 +367,11 @@ int queryDB(TAOS* taos, char* command) {
     if (code != 0) {
       taosSsleep(1);
       taos_free_result(pRes);
+      pRes = NULL;
       continue;
     }
     taos_free_result(pRes);
-	return 0;
+    return 0;
   }
 
   pError("failed to reason:%s, sql: %s", tstrerror(code), command);
@@ -418,7 +423,7 @@ int32_t saveConsumeContentToTbl(SThreadInfo* pInfo, char* buf) {
   char sqlStr[1100] = {0};
 
   if (strlen(buf) > 1024) {
-    taosFprintfFile(g_fp, "The length of one row[%d] is overflow 1024\n", strlen(buf));
+    taosFprintfFile(g_fp, "The length of one row[%d] is overflow 1024\n", (int)strlen(buf));
     taosCloseFile(&g_fp);
     return -1;
   }
@@ -592,7 +597,7 @@ static int32_t data_msg_process(TAOS_RES* msg, SThreadInfo* pInfo, int32_t msgIn
   int32_t     vgroupId = tmq_get_vgroup_id(msg);
   const char* dbName = tmq_get_db_name(msg);
 
-  taosFprintfFile(g_fp, "consumerId: %d, msg index:%" PRId64 "\n", pInfo->consumerId, msgIndex);
+  taosFprintfFile(g_fp, "consumerId: %d, msg index:%d\n", pInfo->consumerId, msgIndex);
   taosFprintfFile(g_fp, "dbName: %s, topic: %s, vgroupId: %d\n", dbName != NULL ? dbName : "invalid table",
                   tmq_get_topic_name(msg), vgroupId);
 
@@ -644,7 +649,7 @@ static int32_t meta_msg_process(TAOS_RES* msg, SThreadInfo* pInfo, int32_t msgIn
   int32_t     vgroupId = tmq_get_vgroup_id(msg);
   const char* dbName = tmq_get_db_name(msg);
 
-  taosFprintfFile(g_fp, "consumerId: %d, msg index:%" PRId64 "\n", pInfo->consumerId, msgIndex);
+  taosFprintfFile(g_fp, "consumerId: %d, msg index:%d\n", pInfo->consumerId, msgIndex);
   taosFprintfFile(g_fp, "dbName: %s, topic: %s, vgroupId: %d\n", dbName != NULL ? dbName : "invalid table",
                   tmq_get_topic_name(msg), vgroupId);
 
@@ -960,7 +965,7 @@ void parseConsumeInfo() {
         ltrim(pstr);
         char* ret = strchr(pstr, ch);
         memcpy(g_stConfInfo.stThreads[i].key[g_stConfInfo.stThreads[i].numOfKey], pstr, ret - pstr);
-        strcpy(g_stConfInfo.stThreads[i].value[g_stConfInfo.stThreads[i].numOfKey], ret + 1);
+        tstrncpy(g_stConfInfo.stThreads[i].value[g_stConfInfo.stThreads[i].numOfKey], ret + 1, sizeof(g_stConfInfo.stThreads[i].value[g_stConfInfo.stThreads[i].numOfKey]));
         // printf("key: %s, value: %s\n", g_stConfInfo.key[g_stConfInfo.numOfKey],
         // g_stConfInfo.value[g_stConfInfo.numOfKey]);
         g_stConfInfo.stThreads[i].numOfKey++;
@@ -1268,25 +1273,26 @@ void* ombProduceThreadFunc(void* param) {
     for (int i = 0; i < batchPerTblTimes; ++i) {
 	  uint32_t  msgsOfSql = g_stConfInfo.batchSize;
 	  if ((i == batchPerTblTimes - 1) && (0 != remainder)) {
-        msgsOfSql = remainder;
+            msgsOfSql = remainder;
 	  }
       int len = 0;
 	  len += snprintf(sqlBuf+len, MAX_SQL_LEN - len, "insert into %s values ", ctbName);
       for (int j = 0; j < msgsOfSql; j++) {
- 		int64_t timeStamp = taosGetTimestampNs();
-		len += snprintf(sqlBuf+len, MAX_SQL_LEN - len, "(%" PRId64 ", \"%s\")", timeStamp, g_payload);
+            int64_t timeStamp = taosGetTimestampNs();
+            len += snprintf(sqlBuf+len, MAX_SQL_LEN - len, "(%" PRId64 ", \"%s\")", timeStamp, g_payload);
 	    sendMsgs++;
 	    pInfo->totalProduceMsgs++;
 	  }
 
-      totalMsgLen += len;
+          totalMsgLen += len;
 	  pInfo->totalMsgsLen += len;
 	  
-      int64_t affectedRows = queryDbExec(pInfo->taos, sqlBuf, INSERT_TYPE);
+          int64_t affectedRows = queryDbExec(pInfo->taos, sqlBuf, INSERT_TYPE);
 	  if (affectedRows < 0) {
 	    taos_close(pInfo->taos);
-        pInfo->taos = NULL;
-        return NULL;
+            pInfo->taos = NULL;
+            taosMemoryFree(sqlBuf);
+            return NULL;
 	  }
 
 	  affectedRowsTotal += affectedRows;
@@ -1322,6 +1328,7 @@ void* ombProduceThreadFunc(void* param) {
   printf("affectedRowsTotal: %"PRId64"\n", affectedRowsTotal);
   taos_close(pInfo->taos);
   pInfo->taos = NULL;
+  taosMemoryFree(sqlBuf);
   return NULL;
 }
 
diff --git a/utils/test/c/tmq_taosx_ci.c b/utils/test/c/tmq_taosx_ci.c
index 3a598ba98b..6540fdac4c 100644
--- a/utils/test/c/tmq_taosx_ci.c
+++ b/utils/test/c/tmq_taosx_ci.c
@@ -663,7 +663,7 @@ void initLogFile() {
 int main(int argc, char* argv[]) {
   for (int32_t i = 1; i < argc; i++) {
     if(strcmp(argv[i], "-c") == 0){
-      strcpy(g_conf.dir, argv[++i]);
+      tstrncpy(g_conf.dir, argv[++i], sizeof(g_conf.dir));
     }else if(strcmp(argv[i], "-s") == 0){
       g_conf.snapShot = true;
     }else if(strcmp(argv[i], "-d") == 0){