From 4dc1235d051d89a48fc9c50880a6a47ac69eb57f Mon Sep 17 00:00:00 2001
From: yihaoDeng <yhdeng@taosdata.com>
Date: Thu, 29 Oct 2020 03:32:49 +0000
Subject: [PATCH] TD-1812

---
 src/client/src/tscAsync.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/client/src/tscAsync.c b/src/client/src/tscAsync.c
index c996bb2a76..64ba0dbf32 100644
--- a/src/client/src/tscAsync.c
+++ b/src/client/src/tscAsync.c
@@ -427,8 +427,11 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
       } else {
         assert(code == TSDB_CODE_SUCCESS);      
       }
-     
-      assert((tscGetNumOfTags(pTableMetaInfo->pTableMeta) != 0) && pSql->param != NULL);
+      // param already freed by other routine and pSql in tscCache when ctrl + c 
+      if (atomic_load_ptr(&pSql->param) == NULL) {
+        return;
+      }
+      assert((tscGetNumOfTags(pTableMetaInfo->pTableMeta) != 0));
 
       SRetrieveSupport *trs = (SRetrieveSupport *)pSql->param;
       SSqlObj *         pParObj = trs->pParentSql;
-- 
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