diff --git a/source/libs/stream/src/streamBackendRocksdb.c b/source/libs/stream/src/streamBackendRocksdb.c
index 231fc2ce5b..8b87019ee0 100644
--- a/source/libs/stream/src/streamBackendRocksdb.c
+++ b/source/libs/stream/src/streamBackendRocksdb.c
@@ -475,6 +475,7 @@ int32_t rebuildDataFromS3(char* chkpPath, int64_t chkpId) {
     taosMemoryFree(pMeta);
     return code;
   }
+  taosMemoryFree(pMeta);
 
   return chkpAddExtraInfo(chkpPath, chkpId, pMeta->processId);
 }
@@ -2648,6 +2649,7 @@ int32_t taskDbGenChkpUploadData__rsync(STaskDbWrapper* pDb, int64_t chkpId, char
 
   char* buf = taosMemoryCalloc(1, cap);
   if (buf == NULL) {
+    taosReleaseRef(taskDbWrapperId, refId);
     return TSDB_CODE_OUT_OF_MEMORY;
   }
 
@@ -2655,6 +2657,7 @@ int32_t taskDbGenChkpUploadData__rsync(STaskDbWrapper* pDb, int64_t chkpId, char
       snprintf(buf, cap, "%s%s%s%s%s%" PRId64 "", pDb->path, TD_DIRSEP, "checkpoints", TD_DIRSEP, "checkpoint", chkpId);
   if (nBytes <= 0 || nBytes >= cap) {
     taosMemoryFree(buf);
+    taosReleaseRef(taskDbWrapperId, refId);
     return TSDB_CODE_OUT_OF_RANGE;
   }
 
@@ -4716,19 +4719,22 @@ int32_t dbChkpInit(SDbChkp* p) {
 int32_t dbChkpDumpTo(SDbChkp* p, char* dname, SArray* list) {
   static char* chkpMeta = "META";
   int32_t      code = 0;
-  int32_t      cap = p->len + 128;
 
   taosThreadRwlockRdlock(&p->rwLock);
 
-  char* srcBuf = taosMemoryCalloc(1, cap);
-  char* dstBuf = taosMemoryCalloc(1, cap);
-  char* srcDir = taosMemoryCalloc(1, cap);
-  char* dstDir = taosMemoryCalloc(1, cap);
-  if (srcBuf == NULL || dstBuf == NULL || srcDir == NULL || dstDir == NULL) {
+  int32_t cap = p->len + 128;
+
+  char* buffer = taosMemoryCalloc(4, cap);
+  if (buffer == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
     goto _ERROR;
   }
 
+  char* srcBuf = buffer;
+  char* dstBuf = &srcBuf[cap];
+  char* srcDir = &dstBuf[cap];
+  char* dstDir = &srcDir[cap];
+
   int nBytes = snprintf(srcDir, cap, "%s%s%s%s%s%" PRId64 "", p->path, TD_DIRSEP, "checkpoints", TD_DIRSEP,
                         "checkpoint", p->curChkpId);
   if (nBytes <= 0 || nBytes >= cap) {
@@ -4872,12 +4878,8 @@ int32_t dbChkpDumpTo(SDbChkp* p, char* dname, SArray* list) {
   code = 0;
 
 _ERROR:
+  taosMemoryFree(buffer);
   taosThreadRwlockUnlock(&p->rwLock);
-  taosMemoryFree(srcBuf);
-  taosMemoryFree(dstBuf);
-  taosMemoryFree(srcDir);
-  taosMemoryFree(dstDir);
-
   return code;
 }
 
diff --git a/source/libs/stream/src/streamCheckpoint.c b/source/libs/stream/src/streamCheckpoint.c
index a66c7a7cfa..731b6e9586 100644
--- a/source/libs/stream/src/streamCheckpoint.c
+++ b/source/libs/stream/src/streamCheckpoint.c
@@ -541,10 +541,8 @@ void streamTaskSetFailedCheckpointId(SStreamTask* pTask) {
 }
 
 static int32_t getCheckpointDataMeta(const char* id, const char* path, SArray* list) {
-  TdFilePtr pFile = NULL;
-  int32_t   cap = strlen(path) + 64;
-  char      buf[128] = {0};
-  int32_t   code = 0;
+  int32_t code = 0;
+  int32_t cap = strlen(path) + 64;
 
   char* filePath = taosMemoryCalloc(1, cap);
   if (filePath == NULL) {
@@ -603,7 +601,7 @@ int32_t uploadCheckpointData(SStreamTask* pTask, int64_t checkpointId, int64_t d
       stDebug("s-task:%s upload checkpointId:%" PRId64 " to remote succ", idStr, checkpointId);
     } else {
       stError("s-task:%s failed to upload checkpointId:%" PRId64 " path:%s,reason:%s", idStr, checkpointId, path,
-              tstrerror(errno));
+              tstrerror(code));
     }
   }
 
@@ -1080,13 +1078,17 @@ ECHECKPOINT_BACKUP_TYPE streamGetCheckpointBackupType() {
 }
 
 int32_t streamTaskUploadCheckpoint(const char* id, const char* path) {
+  int32_t code = 0;
   if (id == NULL || path == NULL || strlen(id) == 0 || strlen(path) == 0 || strlen(path) >= PATH_MAX) {
     stError("invalid parameters in upload checkpoint, %s", id);
-    return -1;
+    return TSDB_CODE_INVALID_CFG;
   }
 
   if (strlen(tsSnodeAddress) != 0) {
-    return uploadByRsync(id, path);
+    code = uploadByRsync(id, path);
+    if (code != 0) {
+      return TAOS_SYSTEM_ERROR(errno);
+    }
   } else if (tsS3StreamEnabled) {
     return uploadCheckpointToS3(id, path);
   }