From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752784AbdJAAHj (ORCPT ); Sat, 30 Sep 2017 20:07:39 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:52911 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752748AbdJAAH2 (ORCPT ); Sat, 30 Sep 2017 20:07:28 -0400 X-ME-Sender: X-Sasl-enc: BQqRT4e0VU/a570Wuggd9ZiPnfHou8/wZSOgMgqPHDsM 1506816447 From: "Tobin C. Harding" To: Greg KH , Petr Mladek , Joe Perches , Ian Campbell , Sergey Senozhatsky Cc: "Tobin C. Harding" , kernel-hardening@lists.openwall.com, linux-kernel@vger.kernel.org, Catalin Marinas , Will Deacon , Steven Rostedt , William Roberts , Chris Fries , Dave Weinstein Subject: [kernel-hardening] [RFC V2 6/6] drivers: uio: un-restrict sysfs pointers for UIO Date: Sun, 1 Oct 2017 11:06:50 +1100 Message-Id: <1506816410-10230-7-git-send-email-me@tobin.cc> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1506816410-10230-1-git-send-email-me@tobin.cc> References: <1506816410-10230-1-git-send-email-me@tobin.cc> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The address and size on the UIO devices are required by userspace to function properly. Let's un-restrict these by adding the 'P' modifier to %pa. Signed-off-by: Tobin C. Harding --- drivers/uio/uio.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index ff04b7f..728ec8f 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -56,12 +56,12 @@ static ssize_t map_name_show(struct uio_mem *mem, char *buf) static ssize_t map_addr_show(struct uio_mem *mem, char *buf) { - return sprintf(buf, "%pa\n", &mem->addr); + return sprintf(buf, "%paP\n", &mem->addr); } static ssize_t map_size_show(struct uio_mem *mem, char *buf) { - return sprintf(buf, "%pa\n", &mem->size); + return sprintf(buf, "%paP\n", &mem->size); } static ssize_t map_offset_show(struct uio_mem *mem, char *buf) -- 2.7.4