linux-kernel - Re: [kernel-hardening] Re: [PATCH v2] kernel: escape non-ASCII and control characters in printk()

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Message-ID: <20110705174922.GA6419@albatros>
Date:	Tue, 5 Jul 2011 21:49:22 +0400
From:	Vasiliy Kulikov <segoon@...nwall.com>
To:	kernel-hardening@...ts.openwall.com
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	James Morris <jmorris@...ei.org>,
	Namhyung Kim <namhyung@...il.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [kernel-hardening] Re: [PATCH v2] kernel: escape non-ASCII and
 control characters in printk()

On Sun, Jul 03, 2011 at 10:42 -0700, Linus Torvalds wrote:
> So saying "%s is for pure 7-bit ASCII with no control codes" is
> annoying, but would really fix it.

Hmm..  It breaks usb UTF-8 strings for sure.  I see some printks in
debugging code.  There might be other users of UTF-8 strings fed to
printk().

-- 
Vasiliy Kulikov
http://www.openwall.com - bringing security into open computing environments
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