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 e69d37ee256f656ddfbfd70fd627e3d3584d0ba1..55ddf874776a4ce3d41a65d7ed2dd57edfb570a2 100644 (file)
--- 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!
     }