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Subject: Re: [gentoo-user] Anyone running a hardened profile?
To: gentoo-user@lists.gentoo.org
References: <20150906131517.52e8d6a0@a6> <55ECB8D3.1080501@gentoo.org>
 <20150907191004.19395757@hal9000.localdomain>
From: Michael Orlitzky <mjo@gentoo.org>
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Date: Mon, 7 Sep 2015 14:27:38 -0400
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On 09/07/2015 01:10 PM, wabenbau@gmail.com wrote:
> Michael Orlitzky <mjo@gentoo.org> wrote:
> 
> I don't think so (but maybe I'm wrong). You have to compile your entire 
> system with a hardened toolchain to get full hardened support (SSP and
> maybe some other things). I think, to go back to a "normal state", you
> have to recompile everything again with a non hardened toolchain.
> 

GCC 4.8 already defaults to -fstack-protector, but you do need to
recompile to get -fstack-protector-all and you're right that you would
need to recompile again to make it go away. The full SSP is considered
safe though, and only slows things down a bit.

For PaX, the markings may exist on your filesystem, but if you switch to
a non-hardened kernel they cease to have any effect. Grsec just goes away.