linux-kernel - Re: x86: Remove STACKPROTECTOR

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Date:	Wed, 11 Nov 2009 00:23:16 +0200
From:	Thomas Backlund <tmb@...driva.org>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	stable@...nel.org
Subject: Re: x86: Remove STACKPROTECTOR_ALL

I think this one should go to 2.6.31.x too ...

> Gitweb:     http://git.kernel.org/linus/14a3f40aafacde1dfd6912327ae14df4baf10304
> Commit:     14a3f40aafacde1dfd6912327ae14df4baf10304
> Parent:     02dd0a0613e0d84c7dd8315e3fe6204d005b7c79
> Author:     Arjan van de Ven <arjan@...radead.org>
> AuthorDate: Fri Oct 23 07:31:01 2009 -0700
> Committer:  Ingo Molnar <mingo@...e.hu>
> CommitDate: Fri Oct 23 16:35:23 2009 +0200
> 
>     x86: Remove STACKPROTECTOR_ALL
>     
>     STACKPROTECTOR_ALL has a really high overhead (runtime and stack
>     footprint) and is not really worth it protection wise (the
>     normal STACKPROTECTOR is in effect for all functions with
>     buffers already), so lets just remove the option entirely.
>     
>     Reported-by: Dave Jones <davej@...hat.com>
>     Reported-by: Chuck Ebbert <cebbert@...hat.com>
>     Signed-off-by: Arjan van de Ven <arjan@...ux.intel.com>
>     Cc: Eric Sandeen <sandeen@...hat.com>
>     LKML-Reference: <20091023073101.3dce4ebb@...radead.org>
>     Signed-off-by: Ingo Molnar <mingo@...e.hu>
> ---
>  arch/x86/Kconfig  |    4 ----
>  arch/x86/Makefile |    1 -
>  2 files changed, 0 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 07e0114..72ace95 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -1443,12 +1443,8 @@ config SECCOMP
>  
>  	  If unsure, say Y. Only embedded should say N here.
>  
> -config CC_STACKPROTECTOR_ALL
> -	bool

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