diff --git a/source/dnode/vnode/src/tq/tqStreamStateSnap.c b/source/dnode/vnode/src/tq/tqStreamStateSnap.c
index 290266d94a..a2b9254db7 100644
--- a/source/dnode/vnode/src/tq/tqStreamStateSnap.c
+++ b/source/dnode/vnode/src/tq/tqStreamStateSnap.c
@@ -67,7 +67,7 @@ int32_t streamStateSnapReaderOpen(STQ* pTq, int64_t sver, int64_t ever, SStreamS
 
 _err:
   tqError("vgId:%d, vnode %s snapshot reader failed to open since %s", TD_VID(pTq->pVnode), STREAM_STATE_TRANSFER,
-          tstrerror(code));
+          tstrerror(terrno));
   *ppReader = NULL;
   return code;
 }
@@ -145,14 +145,15 @@ int32_t streamStateSnapWriterOpen(STQ* pTq, int64_t sver, int64_t ever, SStreamS
     goto _err;
   }
 
-  tqDebug("vgId:%d, vnode %s snapshot writer opened, path:%s", TD_VID(pTq->pVnode), STREAM_STATE_TRANSFER, pTq->pStreamMeta->path);
+  tqDebug("vgId:%d, vnode %s snapshot writer opened, path:%s", TD_VID(pTq->pVnode), STREAM_STATE_TRANSFER,
+          pTq->pStreamMeta->path);
   pWriter->pWriterImpl = pSnapWriter;
 
   *ppWriter = pWriter;
   return code;
 _err:
   tqError("vgId:%d, vnode %s snapshot writer failed to open since %s", TD_VID(pTq->pVnode), STREAM_STATE_TRANSFER,
-          tstrerror(code));
+          tstrerror(terrno));
   taosMemoryFree(pWriter);
   *ppWriter = NULL;
   return -1;
diff --git a/source/libs/stream/src/streamCheckpoint.c b/source/libs/stream/src/streamCheckpoint.c
index 69c2ead7d2..bc5067d4d6 100644
--- a/source/libs/stream/src/streamCheckpoint.c
+++ b/source/libs/stream/src/streamCheckpoint.c
@@ -813,6 +813,11 @@ void checkpointTriggerMonitorFn(void* param, void* tmrId) {
   SArray* pList = pTask->upstreamInfo.pList;
   ASSERT(pTask->info.taskLevel > TASK_LEVEL__SOURCE);
   SArray* pNotSendList = taosArrayInit(4, sizeof(SStreamUpstreamEpInfo));
+  if (pNotSendList == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    stDebug("s-task:%s start to triggerMonitor, reason:%s", id, tstrerror(terrno));
+    return;
+  }
 
   for (int32_t i = 0; i < taosArrayGetSize(pList); ++i) {
     SStreamUpstreamEpInfo* pInfo = taosArrayGetP(pList, i);
@@ -1057,6 +1062,7 @@ static int32_t uploadCheckpointToS3(const char* id, const char* path) {
     }
 
     if (s3PutObjectFromFile2(filename, object, 0) != 0) {
+      terrno = TAOS_SYSTEM_ERROR(errno);
       code = -1;
       stError("[s3] failed to upload checkpoint:%s", filename);
     } else {
@@ -1152,6 +1158,7 @@ int32_t streamTaskDownloadCheckpointData(const char* id, char* path) {
 
 int32_t deleteCheckpoint(const char* id) {
   if (id == NULL || strlen(id) == 0) {
+    terrno = TSDB_CODE_INVALID_PARA;
     stError("deleteCheckpoint parameters invalid");
     return -1;
   }
diff --git a/source/libs/stream/src/streamSnapshot.c b/source/libs/stream/src/streamSnapshot.c
index 868ff002bf..7ef4e8ec09 100644
--- a/source/libs/stream/src/streamSnapshot.c
+++ b/source/libs/stream/src/streamSnapshot.c
@@ -130,7 +130,7 @@ int32_t streamGetFileSize(char* path, char* name, int64_t* sz) {
   int32_t ret = 0;
 
   char* fullname = taosMemoryCalloc(1, strlen(path) + 32);
-   
+
   sprintf(fullname, "%s%s%s", path, TD_DIRSEP, name);
 
   ret = taosStatFile(fullname, sz, NULL, NULL);
@@ -259,17 +259,33 @@ int32_t snapFileReadMeta(SBackendSnapFile2* pSnapFile) {
 }
 int32_t streamBackendSnapInitFile(char* metaPath, SStreamTaskSnap* pSnap, SBackendSnapFile2* pSnapFile) {
   int32_t code = -1;
+  int32_t nBytes = 0;
+  int32_t cap = strlen(pSnap->dbPrefixPath) + 256;
+
+  char* path = taosMemoryCalloc(1, cap);
+  if (path == NULL) {
+    return -1;
+  }
+
+  nBytes = snprintf(path, cap, "%s%s%s%s%s%" PRId64 "", pSnap->dbPrefixPath, TD_DIRSEP, "checkpoints", TD_DIRSEP,
+                    "checkpoint", pSnap->chkpId);
+  if (nBytes <= 0 || nBytes >= cap) {
+    terrno = TSDB_CODE_OUT_OF_RANGE;
+    goto _ERROR;
+  }
 
-  char* path = taosMemoryCalloc(1, strlen(pSnap->dbPrefixPath) + 256);
-  // char  idstr[64] = {0};
-  sprintf(path, "%s%s%s%s%s%" PRId64 "", pSnap->dbPrefixPath, TD_DIRSEP, "checkpoints", TD_DIRSEP, "checkpoint",
-          pSnap->chkpId);
   if (!taosIsDir(path)) {
+    terrno = TSDB_CODE_INVALID_MSG;
     goto _ERROR;
   }
 
   pSnapFile->pSst = taosArrayInit(16, sizeof(void*));
   pSnapFile->pFileList = taosArrayInit(64, sizeof(SBackendFileItem));
+  if (pSnapFile->pSst == NULL || pSnapFile->pFileList == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    goto _ERROR;
+  }
+
   pSnapFile->path = path;
   pSnapFile->snapInfo = *pSnap;
   if ((code = snapFileReadMeta(pSnapFile)) != 0) {
@@ -313,8 +329,15 @@ void snapFileDestroy(SBackendSnapFile2* pSnap) {
 }
 int32_t streamSnapHandleInit(SStreamSnapHandle* pHandle, char* path, void* pMeta) {
   // impl later
+  int32_t code = 0;
+
   SArray* pSnapInfoSet = taosArrayInit(4, sizeof(SStreamTaskSnap));
-  int32_t code = streamCreateTaskDbSnapInfo(pMeta, path, pSnapInfoSet);
+  if (pSnapInfoSet == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
+  }
+
+  code = streamCreateTaskDbSnapInfo(pMeta, path, pSnapInfoSet);
   if (code != 0) {
     stError("failed to do task db snap info, reason:%s", tstrerror(terrno));
     taosArrayDestroy(pSnapInfoSet);
@@ -322,6 +345,11 @@ int32_t streamSnapHandleInit(SStreamSnapHandle* pHandle, char* path, void* pMeta
   }
 
   SArray* pDbSnapSet = taosArrayInit(8, sizeof(SBackendSnapFile2));
+  if (pDbSnapSet == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    taosArrayDestroy(pSnapInfoSet);
+    return -1;
+  }
 
   for (int32_t i = 0; i < taosArrayGetSize(pSnapInfoSet); i++) {
     SStreamTaskSnap* pSnap = taosArrayGet(pSnapInfoSet, i);
@@ -369,7 +397,8 @@ int32_t streamSnapReaderOpen(void* pMeta, int64_t sver, int64_t chkpId, char* pa
   // impl later
   SStreamSnapReader* pReader = taosMemoryCalloc(1, sizeof(SStreamSnapReader));
   if (pReader == NULL) {
-    return TSDB_CODE_OUT_OF_MEMORY;
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
   }
 
   if (streamSnapHandleInit(&pReader->handle, (char*)path, pMeta) < 0) {
@@ -501,11 +530,27 @@ int32_t streamSnapWriterOpen(void* pMeta, int64_t sver, int64_t ever, char* path
 
   SStreamSnapHandle* pHandle = &pWriter->handle;
   pHandle->currIdx = 0;
+
   pHandle->metaPath = taosStrdup(path);
+  if (pHandle->metaPath == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    taosMemoryFree(pWriter);
+  }
+
   pHandle->pDbSnapSet = taosArrayInit(8, sizeof(SBackendSnapFile2));
+  if (pHandle->pDbSnapSet == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    taosMemoryFree(pHandle->metaPath);
+    taosMemoryFree(pWriter);
+    return -1;
+  }
 
   SBackendSnapFile2 snapFile = {0};
-  taosArrayPush(pHandle->pDbSnapSet, &snapFile);
+  if (taosArrayPush(pHandle->pDbSnapSet, &snapFile) == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    streamSnapWriterClose(pWriter, 0);
+    return -1;
+  }
 
   *ppWriter = pWriter;
   return 0;