4.2.8-ckt3 -stable review patch.  If anyone has any objections, please let me 
know.

---8<------------------------------------------------------------

From: Miklos Szeredi <[email protected]>

commit 97daf8b97ad6f913a34c82515be64dc9ac08d63e upstream.

When ovl_copy_xattr() encountered a zero size xattr no more xattrs were
copied and the function returned success.  This is clearly not the desired
behavior.

Signed-off-by: Miklos Szeredi <[email protected]>
Signed-off-by: Kamal Mostafa <[email protected]>
---
 fs/overlayfs/copy_up.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index 871fcb6..394e87f 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -54,7 +54,7 @@ int ovl_copy_xattr(struct dentry *old, struct dentry *new)
 
        for (name = buf; name < (buf + list_size); name += strlen(name) + 1) {
                size = vfs_getxattr(old, name, value, XATTR_SIZE_MAX);
-               if (size <= 0) {
+               if (size < 0) {
                        error = size;
                        goto out_free_value;
                }
-- 
1.9.1

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