GIT: unionfs2-2.6.27.y: Unionfs: Check remount options for being NULL

[Erez Zadok]

commit c370a07145b3ea20be72cbf12b84d11f965f7a0d
Author: Adrian Brunyate <abrunyate at yahoo.com>
Date:   Thu Apr 26 18:51:16 2007 -0400

    Unionfs: Check remount options for being NULL
    
    Signed-off-by: Adrian Brunyate <abrunyate at yahoo.com>
    Signed-off-by: Josef 'Jeff' Sipek <jsipek at cs.sunysb.edu>

diff --git a/fs/unionfs/super.c b/fs/unionfs/super.c
index ee12d03..02c0cc8 100644
--- a/fs/unionfs/super.c
+++ b/fs/unionfs/super.c
@@ -442,7 +442,7 @@ static int unionfs_remount_fs(struct super_block *sb, int *flags,
 	 * the union to a "ro" or "rw" and the VFS took care of it.  So
 	 * nothing to do and we're done.
 	 */
-	if (options[0] == '\0')
+	if (!options || options[0] == '\0')
 		goto out_error;
 
 	/*