From: Sage Weil <sage@newdream.net>
Date: Tue, 16 Mar 2010 04:56:49 +0000 (-0700)
Subject: mds: add array bounds check for null dentry lease
X-Git-Tag: v0.20~275^2~9
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=3ac3e896d829c214ffe995347ebabbf91c323200;p=ceph.git

mds: add array bounds check for null dentry lease
---

diff --git a/src/mds/Server.cc b/src/mds/Server.cc
index efe5da438b3d..011d99a12bbd 100644
--- a/src/mds/Server.cc
+++ b/src/mds/Server.cc
@@ -1696,7 +1696,7 @@ CInode* Server::rdlock_path_pin_ref(MDRequest *mdr, int n,
   int r = mdcache->path_traverse(mdr, 0, refpath, &mdr->dn[n], &mdr->in[n], MDS_TRAVERSE_FORWARD);
   if (r > 0) return false; // delayed
   if (r < 0) {  // error
-    if (r == -ENOENT && n == 0) {
+    if (r == -ENOENT && n == 0 && mdr->dn[n].size()) {
       reply_request(mdr, r, NULL, mdr->dn[n][mdr->dn[n].size()-1]);
     } else {
       reply_request(mdr, r);