linux-kernel - Re: lvcreate on 2.6.22.1: kernel tried to execute NX-protected page

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Date:	Sun, 05 Aug 2007 21:52:25 +0200
From:	Juergen Kreileder <jk@...ckdown.de>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	linux-kernel@...r.kernel.org, dm-devel@...hat.com
Subject: Re: lvcreate on 2.6.22.1: kernel tried to execute NX-protected page

Arjan van de Ven wrote:
> On Sun, 2007-08-05 at 21:03 +0200, Juergen Kreileder wrote:
>> I've upgraded devmapper to 1.02.20 and lvm2 to 2.02.26.  Didn't help much,
>> I just got a the same BUG again:
>>
>> kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
>> BUG: unable to handle kernel paging request at virtual address f492c1f8
> 
> 
> I suspect this is a module that got unloaded but still had some function
> pointer registered somewhere.....
> 
> do you know if/which module that could be?
> (one trick is to compile the kernel such that you don't allow modules to
> be unloaded at all; if that makes it work it's clearly the type of bug I
> described above)

It's a static kernel, no modules.  I've attached the config.


	Juergen



Download attachment "config-2.6.22.1-jk1-exec-shield.gz" of type "application/x-gzip" (8526 bytes)