linux-kernel - Re: [PATCH 5/5] mm: fold arch_randomize_brk into ARCH_HAS_ELF

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Date:	Mon, 9 Mar 2015 14:51:02 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Kees Cook <keescook@...omium.org>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	linux390@...ibm.com, x86@...nel.org,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Oleg Nesterov <oleg@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	"David A. Long" <dave.long@...aro.org>,
	Andrey Ryabinin <a.ryabinin@...sung.com>,
	Arun Chandran <achandran@...sta.com>,
	Yann Droneaud <ydroneaud@...eya.com>,
	Min-Hua Chen <orca.chen@...il.com>,
	Paul Burton <paul.burton@...tec.com>,
	Alex Smith <alex@...x-smith.me.uk>,
	Markos Chandras <markos.chandras@...tec.com>,
	Jeff Bailey <jeffbailey@...gle.com>,
	Vineeth Vijayan <vvijayan@...sta.com>,
	Michael Holzheu <holzheu@...ux.vnet.ibm.com>,
	Ben Hutchings <ben@...adent.org.uk>,
	Hector Marco-Gisbert <hecmargi@....es>,
	Borislav Petkov <bp@...e.de>,
	Jan-Simon Möller <dl9pf@....de>,
	linux-arm-kernel@...ts.infradead.org, linux-mips@...ux-mips.org,
	linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 5/5] mm: fold arch_randomize_brk into
 ARCH_HAS_ELF_RANDOMIZE

On Mon, Mar 02, 2015 at 04:19:48PM -0800, Kees Cook wrote:
> diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
> index afb9cafd3786..c1ff8ab12914 100644
> --- a/arch/arm/include/asm/elf.h
> +++ b/arch/arm/include/asm/elf.h
> @@ -125,10 +125,6 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
>  extern void elf_set_personality(const struct elf32_hdr *);
>  #define SET_PERSONALITY(ex)	elf_set_personality(&(ex))
>  
> -struct mm_struct;
> -extern unsigned long arch_randomize_brk(struct mm_struct *mm);
> -#define arch_randomize_brk arch_randomize_brk
> -
>  #ifdef CONFIG_MMU
>  #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
>  struct linux_binprm;

Acked-by: Russell King <rmk+kernel@....linux.org.uk>

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