diff --git a/source/dnode/vnode/src/meta/metaTable.c b/source/dnode/vnode/src/meta/metaTable.c
index c8a4ff945d0cc1771b0f074b91ee55887a24fe51..97b0be07c148b8b02c733a3a16a6b5fde290b21d 100644
--- a/source/dnode/vnode/src/meta/metaTable.c
+++ b/source/dnode/vnode/src/meta/metaTable.c
@@ -693,6 +693,7 @@ static int metaAlterTableColumn(SMeta *pMeta, int64_t version, SVAlterTbReq *pAl
     if (iCol >= pSchema->nCols) break;
     pColumn = &pSchema->pSchema[iCol];
 
+    ASSERT(pAlterTbReq->colName);
     if (strcmp(pColumn->name, pAlterTbReq->colName) == 0) break;
     iCol++;
   }
diff --git a/source/dnode/vnode/src/tsdb/tsdbFS.c b/source/dnode/vnode/src/tsdb/tsdbFS.c
index da410532f9383be35d670f76063b57148a1f8b3a..d08b743763b3938fd5c0ca2d2f8f9bf11f43f9d3 100644
--- a/source/dnode/vnode/src/tsdb/tsdbFS.c
+++ b/source/dnode/vnode/src/tsdb/tsdbFS.c
@@ -961,7 +961,7 @@ int32_t tsdbFSCommit2(STsdb *pTsdb, STsdbFS *pFSNew) {
     nRef = atomic_sub_fetch_32(&pSetOld->pHeadF->nRef, 1);
     if (nRef == 0) {
       tsdbHeadFileName(pTsdb, pSetOld->diskId, pSetOld->fid, pSetOld->pHeadF, fname);
-      taosRemoveFile(fname);
+      (void)taosRemoveFile(fname);
       taosMemoryFree(pSetOld->pHeadF);
     }
 
@@ -1114,7 +1114,7 @@ void tsdbFSUnref(STsdb *pTsdb, STsdbFS *pFS) {
     ASSERT(nRef >= 0);
     if (nRef == 0) {
       tsdbHeadFileName(pTsdb, pSet->diskId, pSet->fid, pSet->pHeadF, fname);
-      taosRemoveFile(fname);
+      (void)taosRemoveFile(fname);
       taosMemoryFree(pSet->pHeadF);
     }
 
diff --git a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
index 911bd6b02c76fa3c5820b081cc1ec5357e572b43..1bbb7cc1228c15d39b001f1310c3ee1eef836bd8 100644
--- a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
+++ b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
@@ -843,7 +843,8 @@ _err:
 // SDataFReader ====================================================
 int32_t tsdbDataFReaderOpen(SDataFReader **ppReader, STsdb *pTsdb, SDFileSet *pSet) {
   int32_t       code = 0;
-  SDataFReader *pReader;
+  int32_t       lino = 0;
+  SDataFReader *pReader = NULL;
   int32_t       szPage = pTsdb->pVnode->config.tsdbPageSize;
   char          fname[TSDB_FILENAME_LEN];
 
@@ -851,7 +852,7 @@ int32_t tsdbDataFReaderOpen(SDataFReader **ppReader, STsdb *pTsdb, SDFileSet *pS
   pReader = (SDataFReader *)taosMemoryCalloc(1, sizeof(*pReader));
   if (pReader == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
-    goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
   pReader->pTsdb = pTsdb;
   pReader->pSet = pSet;
@@ -859,31 +860,40 @@ int32_t tsdbDataFReaderOpen(SDataFReader **ppReader, STsdb *pTsdb, SDFileSet *pS
   // head
   tsdbHeadFileName(pTsdb, pSet->diskId, pSet->fid, pSet->pHeadF, fname);
   code = tsdbOpenFile(fname, szPage, TD_FILE_READ, &pReader->pHeadFD);
-  if (code) goto _err;
+  TSDB_CHECK_CODE(code, lino, _exit);
 
   // data
   tsdbDataFileName(pTsdb, pSet->diskId, pSet->fid, pSet->pDataF, fname);
   code = tsdbOpenFile(fname, szPage, TD_FILE_READ, &pReader->pDataFD);
-  if (code) goto _err;
+  TSDB_CHECK_CODE(code, lino, _exit);
 
   // sma
   tsdbSmaFileName(pTsdb, pSet->diskId, pSet->fid, pSet->pSmaF, fname);
   code = tsdbOpenFile(fname, szPage, TD_FILE_READ, &pReader->pSmaFD);
-  if (code) goto _err;
+  TSDB_CHECK_CODE(code, lino, _exit);
 
   // stt
   for (int32_t iStt = 0; iStt < pSet->nSttF; iStt++) {
     tsdbSttFileName(pTsdb, pSet->diskId, pSet->fid, pSet->aSttF[iStt], fname);
     code = tsdbOpenFile(fname, szPage, TD_FILE_READ, &pReader->aSttFD[iStt]);
-    if (code) goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
 
-  *ppReader = pReader;
-  return code;
-
-_err:
-  tsdbError("vgId:%d, tsdb data file reader open failed since %s", TD_VID(pTsdb->pVnode), tstrerror(code));
-  *ppReader = NULL;
+_exit:
+  if (code) {
+    *ppReader = NULL;
+    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pTsdb->pVnode), __func__, lino, tstrerror(code));
+
+    if (pReader) {
+      for (int32_t iStt = 0; iStt < pSet->nSttF; iStt++) tsdbCloseFile(&pReader->aSttFD[iStt]);
+      tsdbCloseFile(&pReader->pSmaFD);
+      tsdbCloseFile(&pReader->pDataFD);
+      tsdbCloseFile(&pReader->pHeadFD);
+      taosMemoryFree(pReader);
+    }
+  } else {
+    *ppReader = pReader;
+  }
   return code;
 }
 
diff --git a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
index 423ea2576e7ea96235e6f819aa8c2ec0cb2b492e..74c704598d891d5c50e0fd17766834401891e96d 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
@@ -445,13 +445,14 @@ _err:
 
 int32_t tsdbSnapReaderOpen(STsdb* pTsdb, int64_t sver, int64_t ever, int8_t type, STsdbSnapReader** ppReader) {
   int32_t          code = 0;
+  int32_t          lino = 0;
   STsdbSnapReader* pReader = NULL;
 
   // alloc
   pReader = (STsdbSnapReader*)taosMemoryCalloc(1, sizeof(*pReader));
   if (pReader == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
-    goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
   pReader->pTsdb = pTsdb;
   pReader->sver = sver;
@@ -461,19 +462,19 @@ int32_t tsdbSnapReaderOpen(STsdb* pTsdb, int64_t sver, int64_t ever, int8_t type
   code = taosThreadRwlockRdlock(&pTsdb->rwLock);
   if (code) {
     code = TAOS_SYSTEM_ERROR(code);
-    goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
 
   code = tsdbFSRef(pTsdb, &pReader->fs);
   if (code) {
     taosThreadRwlockUnlock(&pTsdb->rwLock);
-    goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
 
   code = taosThreadRwlockUnlock(&pTsdb->rwLock);
   if (code) {
     code = TAOS_SYSTEM_ERROR(code);
-    goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
 
   // data
@@ -485,43 +486,52 @@ int32_t tsdbSnapReaderOpen(STsdb* pTsdb, int64_t sver, int64_t ever, int8_t type
       pIter->aBlockIdx = taosArrayInit(0, sizeof(SBlockIdx));
       if (pIter->aBlockIdx == NULL) {
         code = TSDB_CODE_OUT_OF_MEMORY;
-        goto _err;
+        TSDB_CHECK_CODE(code, lino, _exit);
       }
     } else {
       pIter->aSttBlk = taosArrayInit(0, sizeof(SSttBlk));
       if (pIter->aSttBlk == NULL) {
         code = TSDB_CODE_OUT_OF_MEMORY;
-        goto _err;
+        TSDB_CHECK_CODE(code, lino, _exit);
       }
     }
 
     code = tBlockDataCreate(&pIter->bData);
-    if (code) goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
 
   code = tBlockDataCreate(&pReader->bData);
-  if (code) goto _err;
+  TSDB_CHECK_CODE(code, lino, _exit);
 
   // del
   pReader->aDelIdx = taosArrayInit(0, sizeof(SDelIdx));
   if (pReader->aDelIdx == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
-    goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
   pReader->aDelData = taosArrayInit(0, sizeof(SDelData));
   if (pReader->aDelData == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
-    goto _err;
+    TSDB_CHECK_CODE(code, lino, _exit);
   }
 
-  tsdbInfo("vgId:%d, vnode snapshot tsdb reader opened for %s", TD_VID(pTsdb->pVnode), pTsdb->path);
-  *ppReader = pReader;
-  return code;
-
-_err:
-  tsdbError("vgId:%d, vnode snapshot tsdb reader open for %s failed since %s", TD_VID(pTsdb->pVnode), pTsdb->path,
-            tstrerror(code));
-  *ppReader = NULL;
+_exit:
+  if (code) {
+    tsdbError("vgId:%d %s failed at line %d since %s, TSDB path: %s", TD_VID(pTsdb->pVnode), lino, tstrerror(code),
+              pTsdb->path);
+    *ppReader = NULL;
+
+    if (pReader) {
+      taosArrayDestroy(pReader->aDelData);
+      taosArrayDestroy(pReader->aDelIdx);
+      tBlockDataDestroy(&pReader->bData, 1);
+      tsdbFSDestroy(&pReader->fs);
+      taosMemoryFree(pReader);
+    }
+  } else {
+    *ppReader = pReader;
+    tsdbInfo("vgId:%d, vnode snapshot tsdb reader opened for %s", TD_VID(pTsdb->pVnode), pTsdb->path);
+  }
   return code;
 }
 
diff --git a/source/dnode/vnode/src/vnd/vnodeSvr.c b/source/dnode/vnode/src/vnd/vnodeSvr.c
index b83f790a3d44625f6361156eb30037131580339b..b531cf75746db62b8711892b8ed8514eb1472431 100644
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@@ -43,14 +43,23 @@ int32_t vnodePreProcessWriteMsg(SVnode *pVnode, SRpcMsg *pMsg) {
       tDecoderInit(&dc, (uint8_t *)pMsg->pCont + sizeof(SMsgHead), pMsg->contLen - sizeof(SMsgHead));
       tStartDecode(&dc);
 
-      tDecodeI32v(&dc, &nReqs);
+      if (tDecodeI32v(&dc, &nReqs) < 0) {
+        code = TSDB_CODE_INVALID_MSG;
+        goto _err;
+      }
       for (int32_t iReq = 0; iReq < nReqs; iReq++) {
         tb_uid_t uid = tGenIdPI64();
         char    *name = NULL;
         tStartDecode(&dc);
 
-        tDecodeI32v(&dc, NULL);
-        tDecodeCStr(&dc, &name);
+        if (tDecodeI32v(&dc, NULL) < 0) {
+          code = TSDB_CODE_INVALID_MSG;
+          return code;
+        }
+        if (tDecodeCStr(&dc, &name) < 0) {
+          code = TSDB_CODE_INVALID_MSG;
+          return code;
+        }
         *(int64_t *)(dc.data + dc.pos) = uid;
         *(int64_t *)(dc.data + dc.pos + 8) = ctime;
 
@@ -81,10 +90,19 @@ int32_t vnodePreProcessWriteMsg(SVnode *pVnode, SRpcMsg *pMsg) {
           char *name = NULL;
 
           tDecoderInit(&dc, pBlock->data, msgIter.schemaLen);
-          tStartDecode(&dc);
+          if (tStartDecode(&dc) < 0) {
+            code = TSDB_CODE_INVALID_MSG;
+            return code;
+          }
 
-          tDecodeI32v(&dc, NULL);
-          tDecodeCStr(&dc, &name);
+          if (tDecodeI32v(&dc, NULL) < 0) {
+            code = TSDB_CODE_INVALID_MSG;
+            return code;
+          }
+          if (tDecodeCStr(&dc, &name) < 0) {
+            code = TSDB_CODE_INVALID_MSG;
+            return code;
+          }
 
           uid = metaGetTableEntryUidByName(pVnode->pMeta, name);
           if (uid == 0) {