Return-Path: Received: from mx144.netapp.com ([216.240.21.25]:48679 "EHLO mx144.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754756AbdCBQDV (ORCPT ); Thu, 2 Mar 2017 11:03:21 -0500 From: Olga Kornievskaia To: CC: Subject: [RFC v1 01/19] fs: Don't copy beyond the end of the file Date: Thu, 2 Mar 2017 11:01:05 -0500 Message-ID: <20170302160123.30375-2-kolga@netapp.com> In-Reply-To: <20170302160123.30375-1-kolga@netapp.com> References: <20170302160123.30375-1-kolga@netapp.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-nfs-owner@vger.kernel.org List-ID: 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)) -- 1.8.3.1