GIT: unionfs2-2.6.27.y: fs/unionfs/: Check return value of d_path

[Erez Zadok]

commit 67d2bd9b72589bb94694c101cd7eef6e277143e8
Author: Josef 'Jeff' Sipek <jsipek at cs.sunysb.edu>
Date:   Tue Feb 27 14:27:25 2007 -0500

    fs/unionfs/: Check return value of d_path
    
    Signed-off-by: Josef 'Jeff' Sipek <jsipek at cs.sunysb.edu>

diff --git a/fs/unionfs/super.c b/fs/unionfs/super.c
index 38443c7..176cfb6 100644
--- a/fs/unionfs/super.c
+++ b/fs/unionfs/super.c
@@ -311,6 +311,11 @@ static int unionfs_show_options(struct seq_file *m, struct vfsmount *mnt)
 		path = d_path(unionfs_lower_dentry_idx(sb->s_root, bindex),
 			   unionfs_lower_mnt_idx(sb->s_root, bindex), tmp_page,
 			   PAGE_SIZE);
+		if (IS_ERR(path)) {
+			ret = PTR_ERR(path);
+			goto out;
+		}
+
 		perms = branchperms(sb, bindex);
 
 		seq_printf(m, "%s=%s", path,