commit aaaf68c5629108f6078ab458d34a661143ea6857
author Andrew Price <anprice@redhat.com> Fri Oct 12 16:45:08 2012 +0100
committer Steven Whitehouse <swhiteho@redhat.com> Wed Nov 07 09:40:05 2012 +0000
tree 9a5e5a44d4aee71d25af98fac75cd689db41e6ff
parent ddffeb8c4d0331609ef2581d84de4d763607bd37

GFS2: Fix an unchecked error from gfs2_rs_alloc

Check the return value of gfs2_rs_alloc(ip) and avoid a possible null
pointer dereference.

Signed-off-by: Andrew Price <anprice@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/quota.c

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 40c4b0d..c5af8e1 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -497,8 +497,11 @@
 	struct gfs2_quota_data **qd;
 	int error;
 
-	if (ip->i_res == NULL)
-		gfs2_rs_alloc(ip);
+	if (ip->i_res == NULL) {
+		error = gfs2_rs_alloc(ip);
+		if (error)
+			return error;
+	}
 
 	qd = ip->i_res->rs_qa_qd;