linux-kernel - Re: [PATCH] do_wait: do take security_task

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Message-ID: <alpine.LRH.2.00.0905010851270.28491@tundra.namei.org>
Date:	Fri, 1 May 2009 08:51:50 +1000 (EST)
From:	James Morris <jmorris@...ei.org>
To:	Oleg Nesterov <oleg@...hat.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Roland McGrath <roland@...hat.com>,
	linux-kernel@...r.kernel.org, David Howells <dhowells@...hat.com>,
	Eric Paris <eparis@...isplace.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH] do_wait: do take security_task_wait() into account

On Wed, 29 Apr 2009, Oleg Nesterov wrote:

> I was never able to understand what should we actually do when
> security_task_wait() fails, but the current code doesn't look right.
> 
> If ->task_wait() returns the error, we update *notask_error correctly.
> But then we either reap the child (despite the fact this was forbidden)
> or clear *notask_error (and hide the securiy policy problems).
> 
> This patch assumes that "stolen by ptrace" doesn't matter. If selinux
> denies the child we should ignore it but make sure we report -EACCESS
> instead of -ECHLD if there are no other eligible children.
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>

Applied to: 
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6#next


-- 
James Morris
<jmorris@...ei.org>
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