diff --git a/src/kit/taosdump/taosdump.c b/src/kit/taosdump/taosdump.c
index 678de7daa78ea5d3963bb97a5fde42b8f214ac7b..63cdf259d642fb47a33e2022cb8141f246aafc96 100644
--- a/src/kit/taosdump/taosdump.c
+++ b/src/kit/taosdump/taosdump.c
@@ -644,14 +644,15 @@ int taosDumpDb(SDbInfo *dbInfo, SDumpArguments *arguments, FILE *fp) {
 
   (void)lseek(fd, 0, SEEK_SET);
 
+  STableRecord tableInfo;
   while (1) {
-    memset(&tableRecord, 0, sizeof(STableRecord));
-    ssize_t ret = read(fd, &tableRecord, sizeof(STableRecord));
+    memset(&tableInfo, 0, sizeof(STableRecord));
+    ssize_t ret = read(fd, &tableInfo, sizeof(STableRecord));
     if (ret <= 0) break;
     
-    tableRecord.name[sizeof(tableRecord.name) - 1] = 0;
-    tableRecord.metric[sizeof(tableRecord.metric) - 1] = 0;
-    taosDumpTable(tableRecord.name, tableRecord.metric, arguments, fp);
+    tableInfo.name[sizeof(tableInfo.name) - 1] = 0;
+    tableInfo.metric[sizeof(tableInfo.metric) - 1] = 0;
+    taosDumpTable(tableInfo.name, tableInfo.metric, arguments, fp);
   }
 
   close(fd);
@@ -910,14 +911,22 @@ int32_t taosDumpMetric(char *metric, SDumpArguments *arguments, FILE *fp) {
 
   (void)lseek(fd, 0, SEEK_SET);
 
+  STableRecord tableInfo;
+  char tableName[TSDB_TABLE_NAME_LEN] ;
+  char metricName[TSDB_TABLE_NAME_LEN];
   while (1) {    
-    memset(&tableRecord, 0, sizeof(STableRecord));
-    ssize_t ret = read(fd, &tableRecord, sizeof(STableRecord));
+    memset(&tableInfo, 0, sizeof(STableRecord));      
+    memset(tableName, 0, TSDB_TABLE_NAME_LEN);    
+    memset(metricName, 0, TSDB_TABLE_NAME_LEN);
+    ssize_t ret = read(fd, &tableInfo, sizeof(STableRecord));
     if (ret <= 0) break;
     
-    tableRecord.name[sizeof(tableRecord.name) - 1] = 0;
-    tableRecord.metric[sizeof(tableRecord.metric) - 1] = 0;
-    taosDumpTable(tableRecord.name, tableRecord.metric, arguments, fp);
+    //tableInfo.name[sizeof(tableInfo.name) - 1] = 0;
+    //tableInfo.metric[sizeof(tableInfo.metric) - 1] = 0;    
+    //taosDumpTable(tableInfo.name, tableInfo.metric, arguments, fp);
+    tstrncpy(tableName, tableInfo.name, TSDB_TABLE_NAME_LEN-1);
+    tstrncpy(metricName, tableInfo.metric, TSDB_TABLE_NAME_LEN-1);
+    taosDumpTable(tableName, metricName, arguments, fp);
   }
 
   close(fd);
diff --git a/src/util/src/tconfig.c b/src/util/src/tconfig.c
index bcea8d16543cb26e6b2c951c83382794f7cf291d..76772db4e081d70d0cb2e2257d7becc3063e17f9 100644
--- a/src/util/src/tconfig.c
+++ b/src/util/src/tconfig.c
@@ -111,21 +111,18 @@ static void taosReadDirectoryConfig(SGlobalCfg *cfg, char *input_value) {
         wordfree(&full_path);
         return;
       }
+      
       if (full_path.we_wordv != NULL && full_path.we_wordv[0] != NULL) {
         strcpy(option, full_path.we_wordv[0]);
       }
+      
       wordfree(&full_path);
 
-      struct stat dirstat;
-      if (stat(option, &dirstat) < 0) {
-        int code = mkdir(option, 0755);
-        if (code < 0) {
-          uError("config option:%s, input value:%s, directory not exist, create fail with return code:%d",
-               cfg->option, input_value, code); 
-        } else {
-          uPrint("config option:%s, input value:%s, directory not exist, create with return code:%d",
-               cfg->option, input_value, code); 
-        }
+      int code = tmkdir(option, 0755);
+      if (code != 0) {
+        terrno = TAOS_SYSTEM_ERROR(errno);
+        uError("config option:%s, input value:%s, directory not exist, create fail:%s",
+             cfg->option, input_value, strerror(errno)); 
       }
       cfg->cfgStatus = TAOS_CFG_CSTATUS_FILE;
     } else {
diff --git a/src/util/src/tlog.c b/src/util/src/tlog.c
index 50dae7b1779bbc735749db220b306238480d56fa..581c4e2e9fac520e1dbd9b3fa8f9164de50c5a96 100644
--- a/src/util/src/tlog.c
+++ b/src/util/src/tlog.c
@@ -276,14 +276,15 @@ static int32_t taosOpenLogFile(char *fn, int32_t maxLines, int32_t maxFileNum) {
     }
   }
 
-  sprintf(name, "%s.%d", tsLogObj.logName, tsLogObj.flag);
+  char fileName[LOG_FILE_NAME_LEN + 50] = "\0";
+  sprintf(fileName, "%s.%d", tsLogObj.logName, tsLogObj.flag);
   pthread_mutex_init(&tsLogObj.logMutex, NULL);
 
   umask(0);
-  tsLogObj.logHandle->fd = open(name, O_WRONLY | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
+  tsLogObj.logHandle->fd = open(fileName, O_WRONLY | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
 
   if (tsLogObj.logHandle->fd < 0) {
-    printf("\nfailed to open log file:%s, reason:%s\n", name, strerror(errno));
+    printf("\nfailed to open log file:%s, reason:%s\n", fileName, strerror(errno));
     return -1;
   }
   taosLockFile(tsLogObj.logHandle->fd);
@@ -291,7 +292,7 @@ static int32_t taosOpenLogFile(char *fn, int32_t maxLines, int32_t maxFileNum) {
   // only an estimate for number of lines
   struct stat filestat;
   if (fstat(tsLogObj.logHandle->fd, &filestat) < 0) {
-    printf("\nfailed to fstat log file:%s, reason:%s\n", name, strerror(errno));
+    printf("\nfailed to fstat log file:%s, reason:%s\n", fileName, strerror(errno));
     return -1;
   }
   size = (int32_t)filestat.st_size;
diff --git a/src/util/src/ttime.c b/src/util/src/ttime.c
index 02d72dd1f4539a012bf50b46f94b4a7647d73675..5feda312b1e3c51c45f728d0811614b219e9055f 100644
--- a/src/util/src/ttime.c
+++ b/src/util/src/ttime.c
@@ -56,7 +56,7 @@ int64_t user_mktime64(const unsigned int year0, const unsigned int mon0,
 		year -= 1;
 	}
 
-  int64_t res = (((((int64_t) (year/4 - year/100 + year/400 + 367*mon/12 + day) +
+  int64_t res = (((((int64_t) (year/4 - year/100 + year/400 + (int64_t)(367*mon)/12 + day) +
 		  year*365 - 719499)*24 + hour)*60 + min)*60 + sec);
 
 	return (res + timezone);