diff --git a/src/benchCommandOpt.c b/src/benchCommandOpt.c
index cfff986c..43b3dbe5 100644
--- a/src/benchCommandOpt.c
+++ b/src/benchCommandOpt.c
@@ -28,10 +28,6 @@ extern char      g_configDir[MAX_PATH_LEN];
 #define TAOSBENCHMARK_STATUS "unknown"
 #endif
 
-#ifndef TD_PRODUCT_NAME
-#define TD_PRODUCT_NAME "TDengine"
-#endif
-
 // libtaos.so
 extern char buildinfo[];
 
@@ -52,7 +48,7 @@ void printVersion() {
     char taosBenchmark_status[] = TAOSBENCHMARK_STATUS;
 
     // version
-    printf("%s\ntaosBenchmark version: %s\ngit: %s\n", TD_PRODUCT_NAME, taosBenchmark_ver, taosBenchmark_commit);
+    printf("taosBenchmark version: %s\ngit: %s\n", taosBenchmark_ver, taosBenchmark_commit);
 #ifdef LINUX
     printf("build: %s\n ", buildinfo);
 #endif
diff --git a/src/benchData.c b/src/benchData.c
index 0cf5f26d..890ba1f5 100644
--- a/src/benchData.c
+++ b/src/benchData.c
@@ -323,8 +323,17 @@ static int generateSampleFromCsv(char *buffer, char* file, FILE* fp, int32_t len
             continue;
         }
 
-        if (('\r' == line[readLen - 1]) || ('\n' == line[readLen - 1])) {
-            line[--readLen] = 0;
+        int32_t pos = (int32_t)(readLen - 1);
+        if(pos > 0) {
+            if (('\r' == line[pos]) || ('\n' == line[pos])) {
+                line[pos] = 0;
+            }
+        }
+        pos = (int32_t)(readLen - 2);
+        if(pos > 0) {
+            if (('\r' == line[pos]) || ('\n' == line[pos])) {
+                line[pos] = 0;
+            }
         }
 
         if (readLen == 0) {
@@ -339,7 +348,7 @@ static int generateSampleFromCsv(char *buffer, char* file, FILE* fp, int32_t len
             continue;
         }
 
-        memcpy(buffer + getRows * length, line, readLen);
+        memcpy(buffer + getRows * length, line, readLen + 1);
         getRows++;
 
         if (getRows == size) {
diff --git a/src/benchInsert.c b/src/benchInsert.c
index e2f9853d..32f01a97 100644
--- a/src/benchInsert.c
+++ b/src/benchInsert.c
@@ -984,6 +984,7 @@ static void *createTable(void *sarg) {
 
         pThreadInfo->tables_created += batchNum;
         batchNum = 0;
+        memset(pThreadInfo->buffer, 0, TSDB_MAX_ALLOWED_SQL_LEN);
         uint64_t currentPrintTime = toolsGetTimestampMs();
         if (currentPrintTime - lastPrintTime > PRINT_STAT_INTERVAL) {
             infoPrint(
diff --git a/src/taosdump.c b/src/taosdump.c
index 334f76d7..3c14c405 100644
--- a/src/taosdump.c
+++ b/src/taosdump.c
@@ -82,10 +82,6 @@
 #define TAOSDUMP_STATUS "unknown"
 #endif
 
-#ifndef TD_PRODUCT_NAME
-#define TD_PRODUCT_NAME "TDengine"
-#endif
-
 // use 256 as normal buffer length
 #define BUFFER_LEN              256
 
@@ -673,7 +669,7 @@ static void printVersion(FILE *file) {
 
     char taosdump_commit[] = TAOSDUMP_COMMIT_SHA1;
 
-    fprintf(file,"%s\ntaosdump version: %s\ngit: %s\n", TD_PRODUCT_NAME, taostools_ver, taosdump_commit);
+    fprintf(file,"taosdump version: %s\ngit: %s\n", taostools_ver, taosdump_commit);
 #ifdef LINUX
     printf("build: %s\n ", buildinfo);
 #endif
@@ -2181,7 +2177,6 @@ static int64_t getTbCountOfStbNative(const char *dbName, const char *stbName) {
     int32_t code = taos_errno(res);
     if (code != 0) {
         cleanIfQueryFailed(__func__, __LINE__, command, res);
-        free(command);
         taos_close(taos);
         return -1;
     }
@@ -9980,7 +9975,7 @@ int readNextTableDesWS(void* ws_res, TableDes* tbDes, int *idx, int *cnt) {
 // read next table tags to tbDes
 int readNextTableDesNative(void* res, TableDes* tbDes) {
     // tbname, tagName , tagValue
-    TAOS_ROW row;
+    TAOS_ROW row = NULL;
     int index = 0;
     while( index < tbDes->tags && NULL != (row = taos_fetch_row(res))) {
         // tbname changed check