linux-kernel - Re: what is the rationale for "TAINT

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Message-ID: <20071012122719.GB30350@atjola.homenet>
Date:	Fri, 12 Oct 2007 14:27:19 +0200
From:	Björn Steinbrink <B.Steinbrink@....de>
To:	"Robert P. J. Day" <rpjday@...dspring.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: what is the rationale for "TAINT_USER"?

On 2007.10.12 08:04:20 -0400, Robert P. J. Day wrote:
> 
>   i can see what the theoretical purpose for it is here:
> 
> http://kerneltrap.org/node/6656
> 
> but it's not clear how it can possibly be set from userland given
> that:
> 
> $ grep -r TAINT_USER *
> include/linux/kernel.h:#define TAINT_USER                       (1<<6)
> kernel/panic.c:                 tainted & TAINT_USER ? 'U' : ' ',
> $
> 
>   am i missing something screamingly obvious?

Grepping for "tainted" leads me to:

echo 32 > /proc/sys/kernel/tainted

Björn
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