linux-kernel - Re: [PATCH] pid: change task

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Message-ID: <20131220044826.GF14944@madcap2.tricolour.ca>
Date:	Thu, 19 Dec 2013 23:48:26 -0500
From:	Richard Guy Briggs <rgb@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH] pid: change task_struct::pid to read-only

On 13/12/17, Peter Zijlstra wrote:
> On Mon, Dec 16, 2013 at 04:03:38PM -0500, Richard Guy Briggs wrote:
> > task->pid is only ever assigned once (well ok, twice).  For system health and
> > secure logging confidence, make it const to make it much more intentional when
> > it is being changed.
> > ---
> > 
> > Peter, as you had suggested, does this approach work for you in terms of making
> > task_struct::pid a lot more difficult to accidentally change to try to preserve
> > its integrity?
> 
> Yeah, looks good to me.

Ok, who would carry this patch?  You?  AKPM?  Me?

Any opinions about Oleg's macro idea?

- RGB

--
Richard Guy Briggs <rbriggs@...hat.com>
Senior Software Engineer, Kernel Security, AMER ENG Base Operating Systems, Red Hat
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