From 89da3e1479974f3fc72f0d586c2e8db2adf26e49 Mon Sep 17 00:00:00 2001
From: freemine <freemine@yeah.net>
Date: Wed, 27 May 2020 11:53:57 +0800
Subject: [PATCH] bugfix: alloc space for holding null-terminator

---
 src/query/src/qExecutor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 47ad633e34..72d018d315 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -5298,7 +5298,7 @@ static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList,
       if (pColFilter->filterstr) {
         pColFilter->len = htobe64(pFilterMsg->len);
 
-        pColFilter->pz = (int64_t) calloc(1, pColFilter->len);
+        pColFilter->pz = (int64_t) calloc(1, pColFilter->len + 1 * TSDB_NCHAR_SIZE); // note: null-terminator
         memcpy((void *)pColFilter->pz, pMsg, pColFilter->len);
         pMsg += (pColFilter->len + 1);
       } else {
-- 
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