Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753581AbdLDOZN (ORCPT ); Mon, 4 Dec 2017 09:25:13 -0500 Received: from mail-pf0-f196.google.com ([209.85.192.196]:44580 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751558AbdLDOZH (ORCPT ); Mon, 4 Dec 2017 09:25:07 -0500 X-Google-Smtp-Source: AGs4zMY1yjqTkyEOBpiYIMKQ30edhzAQakh1o/eMX67EFs986QOvya3elkeeAdQpQ2SapyGPoXbbog== Date: Mon, 4 Dec 2017 23:24:58 +0900 From: Jinbum Park To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel-hardening@lists.openwall.com Cc: afzal.mohd.ma@gmail.com, mark.rutland@arm.com, labbott@redhat.com, linux@armlinux.org.uk, gregkh@linuxfoundation.org, keescook@chromium.org, vladimir.murzin@arm.com, arnd@arndb.de Subject: [kernel-hardening][PATCH v3 0/3] arm: Makes ptdump resuable and add WX page checking Message-ID: <20171204142458.GA3325@pjb1027-Latitude-E5410> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1138 Lines: 36 Hi, Page table dumping code for arm64-x86 is reusable, and they have function for WX page checking. But arm doesn't have that. This path series are to makes ptdump reusable, and add WX page checking for arm. This is heavily based on arm64 version. v2 : Fix a sender name of mail header, there was an mistake. (from "jinb.park" to Jinbum Park) Contents of patch-set are perfectly same. v3 : Take advantage of the existing pg_level and bits arrays to check ro, nx prot. jinb.park (3): arm: mm: dump: make page table dumping reusable arm: mm: dump: make the page table dumping seq_file optional arm: mm: dump: add checking for writable and executable pages arch/arm/Kconfig.debug | 33 +++++++++- arch/arm/include/asm/ptdump.h | 56 ++++++++++++++++ arch/arm/mm/Makefile | 3 +- arch/arm/mm/dump.c | 144 +++++++++++++++++++++++++++++------------- arch/arm/mm/init.c | 2 + arch/arm/mm/ptdump_debugfs.c | 34 ++++++++++ 6 files changed, 226 insertions(+), 46 deletions(-) create mode 100644 arch/arm/include/asm/ptdump.h create mode 100644 arch/arm/mm/ptdump_debugfs.c -- 1.9.1