From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Mon, 4 Jan 2016 07:09:59 +0000 (+0800)
Subject: os: fix potential null pointer access
X-Git-Tag: v10.0.3~131^2~5
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=3d0b479bfb909d30703c126f7f90c4dc984875af;p=ceph.git

os: fix potential null pointer access

Fixes: #14204
Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
---

diff --git a/src/os/kstore/KStore.cc b/src/os/kstore/KStore.cc
index 039f06981e95..5d05fa15d12b 100644
--- a/src/os/kstore/KStore.cc
+++ b/src/os/kstore/KStore.cc
@@ -3127,7 +3127,7 @@ int KStore::_truncate(TransContext *txc,
 
   RWLock::WLocker l(c->lock);
   OnodeRef o = c->get_onode(oid, false);
-  if (!o->exists) {
+  if (!o || !o->exists) {
     r = -ENOENT;
     goto out;
   }