From ca89dc0b2ed7dab0c73f6893b058a19837d61c8d Mon Sep 17 00:00:00 2001
From: Minglei Jin <mljin@taosdata.com>
Date: Mon, 11 Jan 2021 22:53:19 +0800
Subject: [PATCH] [TD-2693]<fix>: return TSDB_CODE_MND_TAG_NOT_EXIST if no tags
 when auto create child table

---
 src/mnode/src/mnodeTable.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mnode/src/mnodeTable.c b/src/mnode/src/mnodeTable.c
index a5d7729ec4..3ab21dbd12 100644
--- a/src/mnode/src/mnodeTable.c
+++ b/src/mnode/src/mnodeTable.c
@@ -2215,6 +2215,12 @@ static int32_t mnodeDoGetChildTableMeta(SMnodeMsg *pMsg, STableMetaMsg *pMeta) {
 static int32_t mnodeAutoCreateChildTable(SMnodeMsg *pMsg) {
   STableInfoMsg *pInfo = pMsg->rpcMsg.pCont;
 
+  if (pMsg->rpcMsg.contLen <= sizeof(*pInfo)) {
+    mError("msg:%p, app:%p table:%s, failed to auto create child table, tags not exist", pMsg, pMsg->rpcMsg.ahandle,
+           pInfo->tableId);
+    return TSDB_CODE_MND_TAG_NOT_EXIST;
+  }
+
   char* p = pInfo->tags;
   int32_t nameLen = htonl(*(int32_t*) p);
   p += sizeof(int32_t);
-- 
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