fix: fix crash issue

source/libs/scheduler/src/schRemote.c

@@ -509,7 +509,7 @@ int32_t schGenerateCallBackInfo(SSchJob *pJob, SSchTask *pTask, void *msg, uint3
   SMsgSendInfo *msgSendInfo = taosMemoryCalloc(1, sizeof(SMsgSendInfo));
   if (NULL == msgSendInfo) {
     SCH_TASK_ELOG("calloc %d failed", (int32_t)sizeof(SMsgSendInfo));
-    SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+    SCH_ERR_JRET(TSDB_CODE_QRY_OUT_OF_MEMORY);
   }
 
   msgSendInfo->paramFreeFp = taosMemoryFree;      
@@ -535,7 +535,11 @@ int32_t schGenerateCallBackInfo(SSchJob *pJob, SSchTask *pTask, void *msg, uint3
 
 _return:
 
+  if (msgSendInfo) {
     destroySendMsgInfo(msgSendInfo);
+  }
+
+  taosMemoryFree(msg);
   
   SCH_RET(code);
 }
@@ -555,7 +559,7 @@ int32_t schGetCallbackFp(int32_t msgType, __async_send_cb_fn_t *fp) {
       *fp = schHandleCallback;
       break;
     case TDMT_SCH_DROP_TASK:
-      //*fp = schHandleDropCallback;
+      *fp = schHandleDropCallback;
       break;
     case TDMT_SCH_QUERY_HEARTBEAT:
       *fp = schHandleHbCallback;
@@ -843,6 +847,7 @@ int32_t schAsyncSendMsg(SSchJob *pJob, SSchTask *pTask, SSchTrans *trans, SQuery
 
   int64_t transporterId = 0;
   code = asyncSendMsgToServerExt(trans->pTrans, epSet, &transporterId, pMsgSendInfo, persistHandle, ctx);
+  pMsgSendInfo = NULL;
   if (code) {
     SCH_ERR_JRET(code);
   }
@@ -919,7 +924,9 @@ int32_t schBuildAndSendHbMsg(SQueryNodeEpId *nodeEpId, SArray *taskAction) {
   addr.epSet.numOfEps = 1;
   memcpy(&addr.epSet.eps[0], &nodeEpId->ep, sizeof(nodeEpId->ep));
 
-  SCH_ERR_JRET(schAsyncSendMsg(NULL, NULL, &trans, &addr, msgType, msg, msgSize, true, &rpcCtx));
+  code = schAsyncSendMsg(NULL, NULL, &trans, &addr, msgType, msg, msgSize, true, &rpcCtx);
+  msg = NULL;
+  SCH_ERR_JRET(code);
 
   return TSDB_CODE_SUCCESS;
 
@@ -1087,8 +1094,9 @@ int32_t schBuildAndSendMsg(SSchJob *pJob, SSchTask *pTask, SQueryNodeAddr *addr,
   }
 
   SSchTrans trans = {.pTrans = pJob->conn.pTrans, .pHandle = SCH_GET_TASK_HANDLE(pTask)};
-  SCH_ERR_JRET(
-      schAsyncSendMsg(pJob, pTask, &trans, addr, msgType, msg, msgSize, persistHandle, (rpcCtx.args ? &rpcCtx : NULL)));
+  schAsyncSendMsg(pJob, pTask, &trans, addr, msgType, msg, msgSize, persistHandle, (rpcCtx.args ? &rpcCtx : NULL));
+  msg = NULL;
+  SCH_ERR_JRET(code);
   
   if (msgType == TDMT_SCH_QUERY || msgType == TDMT_SCH_MERGE_QUERY) {
     SCH_ERR_RET(schAppendTaskExecNode(pJob, pTask, addr, pTask->execId));