From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Fri, 4 Nov 2016 06:47:53 +0000 (+0800)
Subject: os/bluestore: narrow boundary check for fiemap
X-Git-Tag: v11.1.0~404^2~3
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=4ebc5ab420f907e7752046e4900c95887b8544dd;p=ceph.git

os/bluestore: narrow boundary check for fiemap

By including off-by-one.

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
---

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index aa837b694884..d7f3c9e35e3f 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -5379,7 +5379,7 @@ int BlueStore::fiemap(
 	     << " size 0x" << o->onode.size << std::dec << dendl;
 
     boost::intrusive::set<Extent>::iterator ep, eend;
-    if (offset > o->onode.size)
+    if (offset >= o->onode.size)
       goto out;
 
     if (offset + length > o->onode.size) {