From 45a625f2dc3e167677d868b2131619390b449230 Mon Sep 17 00:00:00 2001
From: kailixu <klxu@taosdata.com>
Date: Sat, 18 Mar 2023 12:50:37 +0800
Subject: [PATCH] fix: add mem check

---
 source/libs/executor/src/sysscanoperator.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/source/libs/executor/src/sysscanoperator.c b/source/libs/executor/src/sysscanoperator.c
index 59cb0d8426..2862d96c60 100644
--- a/source/libs/executor/src/sysscanoperator.c
+++ b/source/libs/executor/src/sysscanoperator.c
@@ -521,6 +521,14 @@ static SSDataBlock* sysTableScanUserCols(SOperatorInfo* pOperator) {
     taosHashSetFreeFp(pInfo->pSchema, tDeleteSSchemaWrapperForHash);
   }
 
+  if (!pInfo->pCur || !pInfo->pSchema) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    qError("sysTableScanUserCols failed since %s", terrstr(terrno));
+    blockDataDestroy(dataBlock);
+    pInfo->loadInfo.totalRows = 0;
+    return NULL;
+  }
+
   int32_t resume = pInfo->resume;
   pInfo->resume = false;
   while (resume || ((ret = metaTbCursorNext(pInfo->pCur, TSDB_TABLE_MAX)) == 0)) {
-- 
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