From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754683AbbB0DOB (ORCPT ); Thu, 26 Feb 2015 22:14:01 -0500 Received: from smtp.outflux.net ([198.145.64.163]:34732 "EHLO smtp.outflux.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753244AbbB0DN7 (ORCPT ); Thu, 26 Feb 2015 22:13:59 -0500 From: Kees Cook To: akpm@linux-foundation.org Cc: Kees Cook , Russell King , Catalin Marinas , Will Deacon , Ralf Baechle , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Martin Schwidefsky , Heiko Carstens , linux390@de.ibm.com, x86@kernel.org, Alexander Viro , Oleg Nesterov , Andy Lutomirski , "David A. Long" , Andrey Ryabinin , Arun Chandran , Yann Droneaud , Min-Hua Chen , Paul Burton , Alex Smith , Markos Chandras , Vineeth Vijayan , Jeff Bailey , Michael Holzheu , Ben Hutchings , Behan Webster , Ismael Ripoll , Hector Marco-Gisbert , =?UTF-8?q?Jan-Simon=20M=C3=B6ller?= , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 0/5] split ET_DYN ASLR from mmap ASLR Date: Thu, 26 Feb 2015 19:07:09 -0800 Message-Id: <1425006434-3106-1-git-send-email-keescook@chromium.org> X-Mailer: git-send-email 1.9.1 X-HELO: www.outflux.net Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This separates ET_DYN ASLR from mmap ASLR, as already done on s390. The various architectures that are already randomizing mmap (arm, arm64, mips, powerpc, s390, and x86), have their various forms of arch_mmap_rnd() made available via the new CONFIG_ARCH_HAS_ELF_RANDOMIZE. For these architectures, arch_randomize_brk() is collapsed as well. This is an alternative to the solutions in: https://lkml.org/lkml/2015/2/23/442 Thanks! -Kees