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

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Message-ID: <20110702203323.03462aef@lxorguk.ukuu.org.uk>
Date:	Sat, 2 Jul 2011 20:33:23 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Solar Designer <solar@...nwall.com>
Cc:	kernel-hardening@...ts.openwall.com,
	Vasiliy Kulikov <segoon@...nwall.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	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: [PATCH v2] kernel: escape non-ASCII and control characters in
 printk()

> > Your syslog daemon appears to need improvement
> 
> syslogd definitely should (and does) perform escaping of control chars
> for logs written through it.
> 
> > and that would be the right fix for dmesg etc.
> 
> How?  We can't realistically expect everyone to stop invoking dmesg
> directly.  Moreover, this is sometimes useful, although someone who is

No but you could make "dmesg" do filtering.

Alan
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