From: Sage Weil <sage@newdream.net>
Date: Thu, 11 Nov 2010 23:24:06 +0000 (-0800)
Subject: ceph: fix dangling pointer
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=a1629c3b24f26ec1b0f534874af674a6b4c1540b;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

ceph: fix dangling pointer

Clear fi->last_name when it's freed.  The only caller is rewinddir() (or
equivalent lseek).

Signed-off-by: Sage Weil <sage@newdream.net>
---

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index e0a2dc6fcafc..1e11ed716f85 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -414,6 +414,7 @@ static void reset_readdir(struct ceph_file_info *fi)
 		fi->last_readdir = NULL;
 	}
 	kfree(fi->last_name);
+	fi->last_name = NULL;
 	fi->next_offset = 2;  /* compensate for . and .. */
 	if (fi->dentry) {
 		dput(fi->dentry);