linux-kernel - Re: [PATCH] module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree

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Message-ID: <1319558749.11727.6.camel@deadeye>
Date:	Tue, 25 Oct 2011 18:05:49 +0200
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Nick Bowler <nbowler@...iptictech.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Randy Dunlap <rdunlap@...otime.net>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>, Greg KH <greg@...ah.com>,
	Debian kernel maintainers <debian-kernel@...ts.debian.org>
Subject: Re: [PATCH] module,bug: Add TAINT_OOT_MODULE flag for modules not
 built in-tree

On Tue, 2011-10-25 at 11:38 -0400, Nick Bowler wrote:
> On 2011-10-25 14:26 +1030, Rusty Russell wrote:
> > From: Ben Hutchings <ben@...adent.org.uk>
> > Subject: module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree
> > Date: Mon, 24 Oct 2011 15:12:28 +0200
> > 
> > Use of the GPL or a compatible licence doesn't necessarily make the code
> > any good.  We already consider staging modules to be suspect, and this
> > should also be true for out-of-tree modules which may receive very
> > little review.
> > 
> > Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
> > Reviewed-by: Dave Jones <davej@...hat.com>
> > Acked-by: Greg Kroah-Hartman <gregkh@...e.de>
> > Signed-off-by: Rusty Russell <rusty@...tcorp.com.au> (patched oops-tracing.txt)
> > ---
> >  Documentation/oops-tracing.txt |    2 ++
> >  include/linux/kernel.h         |    1 +
> >  kernel/module.c                |    5 +++++
> >  kernel/panic.c                 |    2 ++
> >  scripts/mod/modpost.c          |    7 +++++++
> >  5 files changed, 17 insertions(+)
> 
> This patch prevents the use of lockdep for debugging out of tree
> modules, which is rather mean.

It was already disabled for staging modules, which seems equally
unhelpful.  Maybe it should print taint flags at the top of its warnings
instead.

Ben.

-- 
Ben Hutchings
DNRC Motto:  I can please only one person per day.
Today is not your day.  Tomorrow isn't looking good either.

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