linux-kernel - Re: [stable] x86: Remove STACKPROTECTOR

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Message-ID: <20091205195852.GC21172@kroah.com>
Date:	Sat, 5 Dec 2009 11:58:52 -0800
From:	Greg KH <greg@...ah.com>
To:	Thomas Backlund <tmb@...driva.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	stable@...nel.org
Subject: Re: [stable] x86: Remove STACKPROTECTOR_ALL

On Wed, Nov 11, 2009 at 12:23:16AM +0200, Thomas Backlund wrote:
> 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>

It doesn't really "fix" anything, so I'd prefer not too.

thanks,

greg k-h
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