linux-kernel - Re: [patch 2/5] Add the Kconfig option for the stackprotector feature

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Message-Id: <200607281913.37889.pluto@agmk.net>
Date:	Fri, 28 Jul 2006 19:13:37 +0200
From:	Paweł Sikora <pluto@...k.net>
To:	linux-kernel@...r.kernel.org
Subject: Re: [patch 2/5] Add the Kconfig option for the stackprotector feature

On Friday 28 July 2006 18:24, Daniel Walker wrote:
> On Fri, 2006-07-28 at 18:03 +0200, Arjan van de Ven wrote:
> > ---
> >  arch/x86_64/Kconfig |   25 +++++++++++++++++++++++++
> >  1 file changed, 25 insertions(+)
>
> Could this be supported on more than just x86_64, it seems fairly
> generic ?

yes, it could.

gcc supports stack protection at so called tree-level (it means
it's architecture-independent). i've just tested a simple userland-code:

#include <stdlib.h>
#include <string.h>
int main()
{
	char c;
	memset( &c, 0, 512 );
	return 0;
}

and stack protection works fine on {ix86,x86-64,powerpc}-linux.
i can test it on {alpha,sparc}-linux later but i'm pretty sure
it'll work too on these archs.
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