From f570d61d48a84f6d26170763a93ffe1ce92315ae Mon Sep 17 00:00:00 2001
From: Minglei Jin <mljin@taosdata.com>
Date: Thu, 24 Nov 2022 19:24:44 +0800
Subject: [PATCH] fix(meta): return invalid message if cannot getting value
 from uididx

---
 source/dnode/vnode/src/meta/metaTable.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/source/dnode/vnode/src/meta/metaTable.c b/source/dnode/vnode/src/meta/metaTable.c
index 8250d68ae1..841999ef9f 100644
--- a/source/dnode/vnode/src/meta/metaTable.c
+++ b/source/dnode/vnode/src/meta/metaTable.c
@@ -981,6 +981,11 @@ static int metaUpdateTableTagVal(SMeta *pMeta, int64_t version, SVAlterTbReq *pA
 
   /* get stbEntry*/
   tdbTbGet(pMeta->pUidIdx, &ctbEntry.ctbEntry.suid, sizeof(tb_uid_t), &pVal, &nVal);
+  if (!pVal) {
+    terrno = TSDB_CODE_INVALID_MSG;
+    goto _err;
+  }
+
   tdbTbGet(pMeta->pTbDb, &((STbDbKey){.uid = ctbEntry.ctbEntry.suid, .version = ((SUidIdxVal *)pVal)[0].version}),
            sizeof(STbDbKey), (void **)&stbEntry.pBuf, &nVal);
   tdbFree(pVal);