From: Yan, Zheng <zyan@redhat.com>
Date: Mon, 22 Dec 2014 02:28:27 +0000 (+0800)
Subject: mds: fix reference after free
X-Git-Tag: v0.93~87^2~21
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=ed422bed3931b246bc4dd2b7c1ba64b5d105c657;p=ceph.git

mds: fix reference after free

CDir::try_trim_snap_dentry() may free the dentry

Signed-off-by: Yan, Zheng <zyan@redhat.com>
---

diff --git a/src/mds/CDir.cc b/src/mds/CDir.cc
index a0d57072aa15..056b1af0826a 100644
--- a/src/mds/CDir.cc
+++ b/src/mds/CDir.cc
@@ -1909,7 +1909,7 @@ void CDir::_omap_commit(int op_prio)
 
     if (dn->last != CEPH_NOSNAP &&
 	snaps && try_trim_snap_dentry(dn, *snaps)) {
-      dout(10) << " rm " << dn->name << " " << *dn << dendl;
+      dout(10) << " rm " << key << dendl;
       write_size += key.length();
       to_remove.insert(key);
       continue;