linux-kernel - Re: [PATCH 2/2] exit_notify: kill the wrong capable(CAP

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Message-Id: <20090225194140.D6F6EFC3DA@magilla.sf.frob.com>
Date:	Wed, 25 Feb 2009 11:41:40 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Chris Evans <scarybeasts@...il.com>,
	David Howells <dhowells@...hat.com>,
	Don Howard <dhoward@...hat.com>,
	Eugene Teo <eugene@...hat.com>,
	Michael Kerrisk <mtk.manpages@...glemail.com>,
	Tavis Ormandy <taviso@....lonestar.org>,
	Vitaly Mayatskikh <vmayatsk@...hat.com>, stable@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] exit_notify: kill the wrong capable(CAP_KILL) check

> I can't understand why exit_notify() checks capable(CAP_KILL), but this
> looks just wrong.

I don't know either why it's there.  My guess is that it was not actually
thought out specifically, just a "unless capable" exception added when the
security-motivated exclusions (exec_id stuff) were added.

I can't think of any reason not to drop this check.


Thanks,
Roland
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