From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kees Cook <keescook@chromium.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>
Cc: Kees Cook <keescook@chromium.org>,
        Russell King <linux@arm.linux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        Ralf Baechle <ralf@linux-mips.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Martin Schwidefsky <schwidefsky@de.ibm.com>,
        Heiko Carstens <heiko.carstens@de.ibm.com>,
        linux390@de.ibm.com, x86@kernel.org,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Oleg Nesterov <oleg@redhat.com>,
        Andy Lutomirski <luto@amacapital.net>,
        "David A. Long" <dave.long@linaro.org>,
        Andrey Ryabinin <a.ryabinin@samsung.com>,
        Arun Chandran <achandran@mvista.com>,
        Yann Droneaud <ydroneaud@opteya.com>,
        Min-Hua Chen <orca.chen@gmail.com>,
To: akpm@linux-foundation.org
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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