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Date: Sun, 20 Apr 2008 12:20:34 +0200
From: "Antoine Brodin" <antoine@FreeBSD.org>
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To: "Ed Schouten" <ed@80386.nl>
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Cc: Jeremie Le Hen <jeremie@le-hen.org>, freebsd-arch@freebsd.org
Subject: Re: Integration of ProPolice in FreeBSD
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On Sun, Apr 20, 2008 at 11:59 AM, Ed Schouten <ed@80386.nl> wrote:
> * Jeremie Le Hen <jeremie@le-hen.org> wrote:
>
> > If you want to look at the patch, this is the last file.
>  >     http://tataz.chchile.org/~tataz/FreeBSD/SSP/fbsd8-ssp.diff
>
>  Couldn't __stack_chk_init() be implemented like this:
>
>  | static void
>  | __stack_chk_init(void *dummy __unused)
>  | {
>  |       arc4rand(__stack_chk_guard, sizeof(__stack_chk_guard), 0);
>  | }

Hi Ed,

You can't do this because arc4rand will be protected and the guard
won't be same when you return from arc4rand.

Cheers,

Antoine