linux-kernel - Re: [patch] printk: add KERN

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Message-ID: <Pine.LNX.4.64.0710021805280.7130@fbirervta.pbzchgretzou.qr>
Date:	Tue, 2 Oct 2007 18:07:01 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Joe Perches <joe@...ches.com>
cc:	Ingo Molnar <mingo@...e.hu>, Willy Tarreau <w@....eu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andy Whitcroft <apw@...dowen.org>, linux-kernel@...r.kernel.org
Subject: Re: [patch] printk: add KERN_CONT annotation

On Oct 2 2007 09:03, Joe Perches wrote:
>On Tue, 2007-10-02 at 17:45 +0200, Jan Engelhardt wrote:
>> always use printk("%s", var)
>
>You have to use indirect arguments to log something?

No, you do not have to.

>Don't you think that's a stupid rule?

Not at all. var may contain format specifiers, which poses a
certain security issue into people's hands. This is already
important in userspace, so is probably even more in the kernel,
even though user-supplied strings are less common.
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