From patchwork Thu Mar 2 16:02:09 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olga Kornievskaia X-Patchwork-Id: 9600859 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4E80C60414 for ; Thu, 2 Mar 2017 16:10:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3EE5F285E5 for ; Thu, 2 Mar 2017 16:10:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3D2B1285EA; Thu, 2 Mar 2017 16:10:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9C29F285DB for ; Thu, 2 Mar 2017 16:10:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752242AbdCBQK2 (ORCPT ); Thu, 2 Mar 2017 11:10:28 -0500 Received: from mx141.netapp.com ([216.240.21.12]:17448 "EHLO mx141.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752736AbdCBQIg (ORCPT ); Thu, 2 Mar 2017 11:08:36 -0500 X-IronPort-AV: E=Sophos;i="5.35,232,1484035200"; d="scan'208";a="186942320" Received: from vmwexchts04-prd.hq.netapp.com ([10.122.105.32]) by mx141-out.netapp.com with ESMTP; 02 Mar 2017 07:53:35 -0800 Received: from smtp2.corp.netapp.com (10.57.159.114) by VMWEXCHTS04-PRD.hq.netapp.com (10.122.105.32) with Microsoft SMTP Server id 15.0.1210.3; Thu, 2 Mar 2017 08:02:08 -0800 Received: from localhost.localdomain ([10.63.239.5]) by smtp2.corp.netapp.com (8.13.1/8.13.1/NTAP-1.6) with ESMTP id v22G28O7017740; Thu, 2 Mar 2017 08:02:09 -0800 (PST) From: Olga Kornievskaia To: CC: , Subject: [PATCH v1 1/3] fs: Don't copy beyond the end of the file Date: Thu, 2 Mar 2017 11:02:09 -0500 Message-ID: <20170302160211.30451-2-kolga@netapp.com> X-Mailer: git-send-email 2.10.1 (Apple Git-78) In-Reply-To: <20170302160211.30451-1-kolga@netapp.com> References: <20170302160211.30451-1-kolga@netapp.com> MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Anna Schumaker Signed-off-by: Anna Schumaker --- fs/read_write.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/read_write.c b/fs/read_write.c index 5816d4c..1d9e305 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1526,6 +1526,9 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in, if (unlikely(ret)) return ret; + if (pos_in >= i_size_read(inode_in)) + return -EINVAL; + if (!(file_in->f_mode & FMODE_READ) || !(file_out->f_mode & FMODE_WRITE) || (file_out->f_flags & O_APPEND))