linux-kernel - Re: A system for rebootless kernel security updates

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Message-ID: <alpine.DEB.1.00.0804241306260.21001@vinegar-pot.mit.edu>
Date:	Thu, 24 Apr 2008 14:13:13 -0400 (EDT)
From:	Jeff Arnold <jbarnold@....EDU>
To:	Christian Hesse <mail@...thworm.de>
cc:	linux-kernel@...r.kernel.org
Subject: Re: A system for rebootless kernel security updates

> I just wanted to test on my Gentoo system with kernel 2.6.25. The 
> tarball creation works, but applying the change brings an error to 
> syslog

Sorry.  (In 2.6.25, init_mm is marked as an unused symbol, and so whether 
it is exported depends on whether CONFIG_UNUSED_SYMBOLS is enabled).

I've committed a change which should fix this problem.  You can get get 
the new version (0.8.1) from http://web.mit.edu/ksplice/dist/ or from Git. 
(I haven't yet made the new version the default, so you won't receive it 
from the main Ksplice page).

Jeff Arnold
jbarnold@....edu

On Thu, 24 Apr 2008, Christian Hesse wrote:

> On Wednesday 23 April 2008, Jeff Arnold wrote:
>> Hello,
>>
>> I've put together an automatic system for applying kernel security patches
>> to the Linux kernel without rebooting it, and I wanted to share this
>> system with the community in case others find it useful or interesting.
>
> This sounds really interesting. I just wanted to test on my Gentoo system with
> kernel 2.6.25. The tarball creation works, but applying the change brings an
> error to syslog:
>
> ksplice_242e9pfc_helper: Unknown symbol init_mm
>
> Any chance to get a fix for that?
> --
> Regards,
> Chris
>
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