From 804e6e95f331ac437c77de32988d68cd15b0bebd Mon Sep 17 00:00:00 2001
From: Xiaoyu Wang <xiaoyuwang@taosdata.com>
Date: Mon, 20 Jun 2022 13:26:19 +0800
Subject: [PATCH] fix: a problem of tag condition double free

---
 source/libs/nodes/src/nodesUtilFuncs.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/source/libs/nodes/src/nodesUtilFuncs.c b/source/libs/nodes/src/nodesUtilFuncs.c
index b0c2aa7407..3561a7f8ea 100644
--- a/source/libs/nodes/src/nodesUtilFuncs.c
+++ b/source/libs/nodes/src/nodesUtilFuncs.c
@@ -1764,7 +1764,14 @@ int32_t nodesPartitionCond(SNode** pCondition, SNode** pPrimaryKeyCond, SNode**
         *pTagIndexCond = *pCondition;
       }
       if (NULL != pTagCond) {
-        *pTagCond = *pCondition;
+        SNode* pTempCond = *pCondition;
+        if (NULL != pTagIndexCond) {
+          pTempCond = nodesCloneNode(*pCondition);
+          if (NULL == pTempCond) {
+            return TSDB_CODE_OUT_OF_MEMORY;
+          }
+        }
+        *pTagCond = pTempCond;
       }
       break;
     case COND_TYPE_TAG:
-- 
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