From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751879AbcA2BTz (ORCPT ); Thu, 28 Jan 2016 20:19:55 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:60748 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751065AbcA2BTu (ORCPT ); Thu, 28 Jan 2016 20:19:50 -0500 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Miklos Szeredi , Kamal Mostafa Subject: [PATCH 3.19.y-ckt 004/210] ovl: allow zero size xattr Date: Thu, 28 Jan 2016 17:15:42 -0800 Message-Id: <1454030348-17736-5-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1454030348-17736-1-git-send-email-kamal@canonical.com> References: <1454030348-17736-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.19 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.19.8-ckt14 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Miklos Szeredi 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 Signed-off-by: Kamal Mostafa --- 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 319c487..37b1b9e 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