From 32c24eedb87a247478327ea88170512e23c68356 Mon Sep 17 00:00:00 2001
From: Shengliang Guan <slguan@taosdata.com>
Date: Wed, 20 Apr 2022 19:05:00 +0800
Subject: [PATCH] fix: invalid comment len

---
 source/dnode/mnode/impl/src/mndStb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index d8b94f5ffe..6bdf4575a8 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -348,7 +348,7 @@ static int32_t mndStbActionUpdate(SSdb *pSdb, SStbObj *pOld, SStbObj *pNew) {
   memcpy(pOld->pColumns, pNew->pColumns, pOld->numOfColumns * sizeof(SSchema));
   memcpy(pOld->pTags, pNew->pTags, pOld->numOfTags * sizeof(SSchema));
   if (pNew->commentLen != 0) {
-    memcpy(pOld->comment, pNew->comment, TSDB_STB_COMMENT_LEN);
+    memcpy(pOld->comment, pNew->comment, pNew->commentLen);
   }
   if (pNew->ast1Len != 0) {
     memcpy(pOld->pAst1, pNew->pAst1, pNew->ast1Len);
-- 
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