ocfs2: add handler_map array bounds checking

Make the handler_map array as large as the possible value range to avoid
a fencepost error.

[ Utilize alternate method -- Joel ]

Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index a9da45bbb9ed9797dad1311dfe4df66a1a7aaf28..e19980a71a3c418e8eb70f3ea3529762223dbf58 100644 (file)
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -78,7 +78,7 @@ struct xattr_handler *ocfs2_xattr_handlers[] = {
        NULL
 };
 
-static struct xattr_handler *ocfs2_xattr_handler_map[] = {
+static struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = {
        [OCFS2_XATTR_INDEX_USER]        = &ocfs2_xattr_user_handler,
        [OCFS2_XATTR_INDEX_TRUSTED]     = &ocfs2_xattr_trusted_handler,
 };