From: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
Date: Fri, 10 May 2013 13:19:55 +0000 (+0200)
Subject: mds/MDCache.cc: add NULL pointer check
X-Git-Tag: v0.63~41^2~9
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=d258df4da31cb7411198f8e52ee76ec161ebb92d;p=ceph.git

mds/MDCache.cc: add NULL pointer check

Check for result of get_inode() for NULL before use the pointer.

716990 Dereference null return value (CWE-476)

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
---

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index e69d37ee256f..55ddf874776a 100644
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -9195,7 +9195,7 @@ void MDCache::handle_discover(MDiscover *dis)
     cur = get_inode(dis->get_base_ino(), snapid);
     if (!cur && snapid != CEPH_NOSNAP) {
       cur = get_inode(dis->get_base_ino());
-      if (!cur->is_multiversion())
+      if (cur && !cur->is_multiversion())
 	cur = NULL;  // nope!
     }