From 22903b3dffc91b39ff31f026ef39c27ffb59da8a Mon Sep 17 00:00:00 2001
From: wangmm0220 <wangmm0220@gmail.com>
Date: Sat, 16 Jul 2022 16:34:56 +0800
Subject: [PATCH] fix:nchar is too long

---
 source/client/src/clientSml.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index e1230abbce..83f2cf9307 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -1047,6 +1047,10 @@ static int32_t smlParseTelnetTags(const char *data, SArray *cols, char *childTab
       continue;
     }
 
+    if(valueLen > (TSDB_MAX_NCHAR_LEN - VARSTR_HEADER_SIZE) / TSDB_NCHAR_SIZE){
+      return TSDB_CODE_PAR_INVALID_VAR_COLUMN_LEN;
+    }
+
     // add kv to SSmlKv
     SSmlKv *kv = (SSmlKv *)taosMemoryCalloc(sizeof(SSmlKv), 1);
     if (!kv) return TSDB_CODE_OUT_OF_MEMORY;
-- 
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