From 5ff8bb5bc0b8af92bd0c62b53646b50ac60cb145 Mon Sep 17 00:00:00 2001
From: yihaoDeng <luomoxyz@126.com>
Date: Mon, 17 Oct 2022 19:56:59 +0800
Subject: [PATCH] fix invalid packet

---
 source/libs/transport/src/transComm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/libs/transport/src/transComm.c b/source/libs/transport/src/transComm.c
index f843c8559c..4ae1a1083a 100644
--- a/source/libs/transport/src/transComm.c
+++ b/source/libs/transport/src/transComm.c
@@ -128,10 +128,10 @@ int transDumpFromBuffer(SConnBuffer* connBuf, char** buf) {
   static const int HEADSIZE = sizeof(STransMsgHead);
 
   SConnBuffer* p = connBuf;
-  if (p->left != 0) {
+  if (p->left != 0 || p->total <= 0) {
     return -1;
   }
-  int total = connBuf->total;
+  int total = p->total;
   if (total >= HEADSIZE && !p->invalid) {
     *buf = taosMemoryCalloc(1, total);
     memcpy(*buf, p->buf, total);