linux-kernel - Re: [tip:x86/mm] x86/mm: Warn on W^X mappings

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Message-ID: <20151008181124.GA18423@gmail.com>
Date:	Thu, 8 Oct 2015 20:11:24 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Arjan van de Ven <arjan@...ux.intel.com>, luto@...capital.net,
	peterz@...radead.org, sds@...ho.nsa.gov, keescook@...omium.org,
	torvalds@...ux-foundation.org, efault@....de,
	linux-kernel@...r.kernel.org, hpa@...or.com, tglx@...utronix.de,
	brgerst@...il.com, dvlasenk@...hat.com,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/mm] x86/mm: Warn on W^X mappings


* Borislav Petkov <bp@...en8.de> wrote:

> On Thu, Oct 08, 2015 at 08:00:24AM -0700, Arjan van de Ven wrote:
> > I would like the success message to be there.
> > From an automated testing perspective (for the distro I work on for example),
> 
> Is that particular success message important? I mean, if we started
> issuing success messages for *everything*, we'll flood dmesg with bunch
> of useless jibber-jabber. And we don't want that either.

For security related checks it's important, yes - we had cases of security tests 
being broken by init code reordering: the security test was not ran at all, and 
nobody noticed!

Thanks,

	Ingo
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