From 096b624340babe5bf5d03ce8d118b356395ca3b9 Mon Sep 17 00:00:00 2001
From: Shengliang Guan <slguan@taosdata.com>
Date: Tue, 30 Jun 2020 15:20:27 +0000
Subject: [PATCH] crash while calc tagLen

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

diff --git a/src/mnode/src/mnodeTable.c b/src/mnode/src/mnodeTable.c
index 23b62f1aa3..5ebfb164df 100644
--- a/src/mnode/src/mnodeTable.c
+++ b/src/mnode/src/mnodeTable.c
@@ -1987,7 +1987,7 @@ static int32_t mnodeAutoCreateChildTable(SMnodeMsg *pMsg) {
   pCreateMsg->getMeta = 1;
   pCreateMsg->contLen = htonl(contLen);
 
-  memcpy(pCreateMsg->schema, pTags, contLen);
+  memcpy(pCreateMsg->schema, pTags, contLen - sizeof(SCMCreateTableMsg));
   mDebug("app:%p:%p, table:%s, start to create on demand, tagLen:%d stable:%s",
          pMsg->rpcMsg.ahandle, pMsg, pInfo->tableId, tagLen, pTags->name);
 
-- 
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