From: Andi Kleen <andi@firstfloor.org>
To: pageexec@freemail.hu
Cc: Ingo Molnar <mingo@elte.hu>, Andi Kleen <andi@firstfloor.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Arjan van de Ven <arjan@infradead.org>,
linux-kernel@vger.kernel.org, tglx@tglx.de, hpa@zytor.com
Subject: Re: [patch] Add basic sanity checks to the syscall execution patch
Date: Fri, 5 Sep 2008 22:48:30 +0200 [thread overview]
Message-ID: <20080905204830.GB18288@one.firstfloor.org> (raw)
In-Reply-To: <48C18BB8.13126.4E8982B@pageexec.freemail.hu>
On Fri, Sep 05, 2008 at 09:42:48PM +0200, pageexec@freemail.hu wrote:
> On 5 Sep 2008 at 19:26, Andi Kleen wrote:
>
> >
> > First such checkers already exist -- they are called root kit checkers.
> > There are various around.
> > Usually operate from user space. You could run them in a cron job.
>
> how trivial do you think it is for *kernel* code to evade *userland*
> checking it? ;) otherwise agreed with rest.
It depends on where the userland runs. e.g. if it's under a hypervisor
and in a separate domain it should be reasonably safe.
And then I don't think it is much difference between Ingo's kernel
checker and a user land checker. Both can be disabled it you know
about them.
-Andi
--
ak@linux.intel.com
next prev parent reply other threads:[~2008-09-05 20:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-04 2:51 Arjan van de Ven
2008-09-04 12:01 ` Andi Kleen
2008-09-04 12:34 ` Alan Cox
2008-09-04 13:06 ` Andi Kleen
2008-09-04 12:44 ` Arjan van de Ven
2008-09-05 9:43 ` pageexec
2008-09-05 10:14 ` Benjamin Herrenschmidt
2008-09-05 10:49 ` pageexec
2008-09-05 10:57 ` Benjamin Herrenschmidt
2008-09-05 11:42 ` Ingo Molnar
2008-09-05 12:00 ` pageexec
2008-09-05 15:42 ` Ingo Molnar
2008-09-05 16:23 ` pageexec
2008-09-05 16:52 ` Ingo Molnar
2008-09-05 17:26 ` Andi Kleen
2008-09-05 19:42 ` pageexec
2008-09-05 20:48 ` Andi Kleen [this message]
2008-09-05 19:37 ` pageexec
2008-09-06 15:42 ` Ingo Molnar
2008-09-07 0:17 ` pageexec
2008-09-05 12:01 ` Andi Kleen
2008-09-05 20:41 ` Willy Tarreau
2008-09-06 15:45 ` Ingo Molnar
2008-09-06 16:34 ` Jeroen van Rijn
2008-09-07 12:53 ` Pavel Machek
2008-09-05 16:05 ` Arjan van de Ven
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