fix: coverity issues

source/dnode/mgmt/mgmt_vnode/src/vmFile.c

@@ -94,6 +94,7 @@ int32_t vmGetVnodeListFromFile(SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t
     pCfgs = taosMemoryCalloc(vnodesNum, sizeof(SWrapperCfg));
     if (pCfgs == NULL) {
       dError("failed to read %s since out of memory", file);
+      code = TSDB_CODE_OUT_OF_MEMORY;
       goto _OVER;
     }
 
@@ -104,6 +105,7 @@ int32_t vmGetVnodeListFromFile(SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t
       cJSON *vgId = cJSON_GetObjectItem(vnode, "vgId");
       if (!vgId || vgId->type != cJSON_Number) {
         dError("failed to read %s since vgId not found", file);
+        taosMemoryFree(pCfgs);
         goto _OVER;
       }
       pCfg->vgId = vgId->valueint;
@@ -112,6 +114,7 @@ int32_t vmGetVnodeListFromFile(SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t
       cJSON *dropped = cJSON_GetObjectItem(vnode, "dropped");
       if (!dropped || dropped->type != cJSON_Number) {
         dError("failed to read %s since dropped not found", file);
+        taosMemoryFree(pCfgs);
         goto _OVER;
       }
       pCfg->dropped = dropped->valueint;
@@ -119,6 +122,7 @@ int32_t vmGetVnodeListFromFile(SVnodeMgmt *pMgmt, SWrapperCfg **ppCfgs, int32_t
       cJSON *vgVersion = cJSON_GetObjectItem(vnode, "vgVersion");
       if (!vgVersion || vgVersion->type != cJSON_Number) {
         dError("failed to read %s since vgVersion not found", file);
+        taosMemoryFree(pCfgs);
         goto _OVER;
       }
       pCfg->vgVersion = vgVersion->valueint;
@@ -135,7 +139,6 @@ _OVER:
   if (content != NULL) taosMemoryFree(content);
   if (root != NULL) cJSON_Delete(root);
   if (pFile != NULL) taosCloseFile(&pFile);
-  if (code != 0) taosMemoryFree(pCfgs);
 
   terrno = code;
   return code;
@@ -143,8 +146,8 @@ _OVER:
 
 int32_t vmWriteVnodeListToFile(SVnodeMgmt *pMgmt) {
   int32_t ret = 0;
-  char file[PATH_MAX] = {0};
-  char realfile[PATH_MAX] = {0};
+  char    file[PATH_MAX] = {0};
+  char    realfile[PATH_MAX] = {0};
   snprintf(file, sizeof(file), "%s%svnodes.json.bak", pMgmt->path, TD_DIRSEP);
   snprintf(realfile, sizeof(file), "%s%svnodes.json", pMgmt->path, TD_DIRSEP);
 

source/dnode/mgmt/node_mgmt/src/dmProc.c

@@ -57,6 +57,7 @@ static int32_t dmInitProcSem(SProcQueue *queue) {
 
 static SProcQueue *dmInitProcQueue(SProc *proc, char *ptr, int32_t size) {
   SProcQueue *queue = (SProcQueue *)(ptr);
+  memset(ptr, 0, size);
 
   int32_t bufSize = size - CEIL8(sizeof(SProcQueue));
   if (bufSize <= 1024) {
@@ -76,11 +77,11 @@ static SProcQueue *dmInitProcQueue(SProc *proc, char *ptr, int32_t size) {
     tstrncpy(queue->name, proc->name, sizeof(queue->name));
 
     taosThreadMutexLock(&queue->mutex);
-    queue->head = 0;
-    queue->tail = 0;
+    // queue->head = 0;
+    // queue->tail = 0;
     queue->total = bufSize;
     queue->avail = bufSize;
-    queue->items = 0;
+    // queue->items = 0;
     taosThreadMutexUnlock(&queue->mutex);
   }
 

source/dnode/mnode/impl/src/mndDnode.c

@@ -103,7 +103,7 @@ static int32_t mndCreateDefaultDnode(SMnode *pMnode) {
   dnodeObj.port = tsServerPort;
   tstrncpy(dnodeObj.fqdn, tsLocalFqdn, TSDB_FQDN_LEN);
   dnodeObj.fqdn[TSDB_FQDN_LEN - 1] = 0;
-  snprintf(dnodeObj.ep, TSDB_EP_LEN - 1, "%s:%u", dnodeObj.fqdn, dnodeObj.port);
+  snprintf(dnodeObj.ep, TSDB_EP_LEN - 1, "%s:%u", tsLocalFqdn, tsServerPort);
 
   pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_GLOBAL, NULL, "create-dnode");
   if (pTrans == NULL) goto _OVER;
@@ -490,7 +490,7 @@ static int32_t mndCreateDnode(SMnode *pMnode, SRpcMsg *pReq, SCreateDnodeReq *pC
   dnodeObj.updateTime = dnodeObj.createdTime;
   dnodeObj.port = pCreate->port;
   tstrncpy(dnodeObj.fqdn, pCreate->fqdn, TSDB_FQDN_LEN);
-  snprintf(dnodeObj.ep, TSDB_EP_LEN - 1, "%s:%u", dnodeObj.fqdn, dnodeObj.port);
+  snprintf(dnodeObj.ep, TSDB_EP_LEN - 1, "%s:%u", pCreate->fqdn, pCreate->port);
 
   pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_GLOBAL, pReq, "create-dnode");
   if (pTrans == NULL) goto _OVER;

source/util/src/tuuid.c

@@ -22,6 +22,8 @@ int32_t tGenIdPI32(void) {
   if (tUUIDHashId == 0) {
     char    uid[65] = {0};
     int32_t code = taosGetSystemUUID(uid, sizeof(uid));
+    uid[64] = 0;
+
     if (code != TSDB_CODE_SUCCESS) {
       terrno = TAOS_SYSTEM_ERROR(errno);
     } else {