linux-kernel - Re: [PATCH] staging: dgnc: fix potential format string flaw

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Message-ID: <20130911192821.GG25896@mwanda>
Date:	Wed, 11 Sep 2013 22:28:21 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Kees Cook <keescook@...omium.org>, devel@...verdev.osuosl.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Lidza Louina <lidza.louina@...il.com>,
	Tushar Behera <tushar.behera@...aro.org>
Subject: Re: [PATCH] staging: dgnc: fix potential format string flaw

>  * %n is ignored

Really it should trigger a WARN_ON_ONCE().  There is code like
show_console_dev() which relies on it to work.  If we ignore %n it
causes another bug.

regards,
dan carpenter

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