From e295516e07da605282b78ad7a7f4aaa898b473c0 Mon Sep 17 00:00:00 2001
From: slguan <slguan@taosdata.com>
Date: Mon, 23 Sep 2019 15:58:50 +0800
Subject: [PATCH] Add some security checks

---
 src/system/src/vnodeMeter.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/system/src/vnodeMeter.c b/src/system/src/vnodeMeter.c
index 9be2873086..bba17327a2 100644
--- a/src/system/src/vnodeMeter.c
+++ b/src/system/src/vnodeMeter.c
@@ -636,7 +636,9 @@ _over:
 
 void vnodeProcessUpdateSchemaTimer(void *param, void *tmrId) {
   SMeterObj * pObj = (SMeterObj *)param;
+  if (pObj->vnode >= TSDB_MAX_VNODES) return;
   SVnodeObj * pVnode = vnodeList + pObj->vnode;
+  if (pVnode == NULL) return;
   if (pVnode->meterList == NULL) {
     dTrace("vnode is deleted, abort update schema");
     return;
-- 
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