diff --git a/src/util/src/tcache.c b/src/util/src/tcache.c
index 2b6083a91c..76fd946ee7 100644
--- a/src/util/src/tcache.c
+++ b/src/util/src/tcache.c
@@ -433,7 +433,6 @@ void taosCacheEmpty(SCacheObj *pCacheObj) {
   __cache_wr_lock(pCacheObj);
   while (taosHashIterNext(pIter)) {
     if (pCacheObj->deleting == 1) {
-      taosHashDestroyIter(pIter);
       break;
     }
     
diff --git a/src/util/src/tcompression.c b/src/util/src/tcompression.c
index e3b3d65052..b085e26e07 100644
--- a/src/util/src/tcompression.c
+++ b/src/util/src/tcompression.c
@@ -551,7 +551,7 @@ int tsDecompressTimestampImp(const char *const input, const int nelements, char
         delta_of_delta = 0;
       } else {
         if (is_bigendian()) {
-          memcpy(&dd1 + LONG_BYTES - nbytes, input + ipos, nbytes);
+          memcpy(((char *)(&dd1)) + LONG_BYTES - nbytes, input + ipos, nbytes);
         } else {
           memcpy(&dd1, input + ipos, nbytes);
         }
@@ -576,7 +576,7 @@ int tsDecompressTimestampImp(const char *const input, const int nelements, char
         delta_of_delta = 0;
       } else {
         if (is_bigendian()) {
-          memcpy(&dd2 + LONG_BYTES - nbytes, input + ipos, nbytes);
+          memcpy(((char *)(&dd2)) + LONG_BYTES - nbytes, input + ipos, nbytes);
         } else {
           memcpy(&dd2, input + ipos, nbytes);
         }
diff --git a/src/util/src/tkvstore.c b/src/util/src/tkvstore.c
index 88cd446349..cf5228c072 100644
--- a/src/util/src/tkvstore.c
+++ b/src/util/src/tkvstore.c
@@ -537,5 +537,6 @@ static int tdRestoreKVStore(SKVStore *pStore) {
 
 _err:
   tfree(buf);
+  taosHashDestroyIter(pIter);
   return -1;
 }
\ No newline at end of file
diff --git a/src/util/src/tnote.c b/src/util/src/tnote.c
index 31ed6e2f7b..7c0041e2bb 100644
--- a/src/util/src/tnote.c
+++ b/src/util/src/tnote.c
@@ -226,7 +226,7 @@ int taosOpenNoteWithMaxLines(char *fn, int maxLines, int maxNoteNum, taosNoteInf
 void taosNotePrint(taosNoteInfo * pNote, const char * const format, ...)
 {
     va_list argpointer;
-    char    buffer[MAX_NOTE_LINE_SIZE];
+    char    buffer[MAX_NOTE_LINE_SIZE+2];
     int     len;
     struct  tm      Tm, *ptm;
     struct  timeval timeSecs;
diff --git a/src/util/src/tsocket.c b/src/util/src/tsocket.c
index 1f4d57115b..98ed8d1ed7 100644
--- a/src/util/src/tsocket.c
+++ b/src/util/src/tsocket.c
@@ -278,7 +278,7 @@ int taosOpenUdpSocket(uint32_t ip, uint16_t port) {
   /* bind socket to local address */
   if (bind(sockFd, (struct sockaddr *)&localAddr, sizeof(localAddr)) < 0) {
     uError("failed to bind udp socket: %d (%s), 0x%x:%hu", errno, strerror(errno), ip, port);
-    taosCloseSocket(sockFd);
+    close(sockFd);
     return -1;
   }
 
@@ -321,7 +321,7 @@ int taosOpenTcpClientSocket(uint32_t destIp, uint16_t destPort, uint32_t clientI
 
   if (ret != 0) {
     //uError("failed to connect socket, ip:0x%x, port:%hu(%s)", destIp, destPort, strerror(errno));
-    taosCloseSocket(sockFd);
+    close(sockFd);
     sockFd = -1;
   }
 
diff --git a/src/util/src/ttimer.c b/src/util/src/ttimer.c
index cdb2c6c0be..940c035b80 100644
--- a/src/util/src/ttimer.c
+++ b/src/util/src/ttimer.c
@@ -290,6 +290,7 @@ static void addToExpired(tmr_obj_t* head) {
     SSchedMsg  schedMsg;
     schedMsg.fp = NULL;
     schedMsg.tfp = processExpiredTimer;
+    schedMsg.msg = NULL;
     schedMsg.ahandle = head;
     schedMsg.thandle = NULL;
     taosScheduleTask(tmrQhandle, &schedMsg);
diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index 9209117415..4ac034da98 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -557,7 +557,7 @@ bool taosGetVersionNumber(char *versionStr, int *versionNubmer) {
     return false;
   }
 
-  int versionNumberPos[4] = {0};
+  int versionNumberPos[5] = {0};
   int len = strlen(versionStr);
   int dot = 0;
   for (int pos = 0; pos < len && dot < 4; ++pos) {