Re: [vserver] Patch for 2.6.38.4 vserver + GR Security

From: Sandino Araico Sánchez <sandino_at_sandino.net>
Date: Sat 14 May 2011 - 09:01:12 BST
Message-ID: <4DCE36C8.80309@sandino.net>

After the refcount fix (thanks Rik for your advice) I have the new
kernel running for more than 23 hours with no visible failure.

The vserver patch against a grsec-patched kernel:
http://sandino.araico.net/parches/vserver/patch-2.6.38.4-vs2.3.0.37-rc15-against-grsec-2.2.2-201104232142-KB2-unstable.diff

The combined patch against 2.6.38.4 vanilla:
http://sandino.araico.net/parches/vserver/patch-2.6.38.4-vs2.3.0.37-rc15-grsec-2.2.2-201104232142-KB2-unstable.diff

On 12/05/11 06:33, Sandino Araico Sánchez wrote:
> On 12/05/11 05:34, Rik Bobbaers wrote:
>> this is the refcount overflow i was talking about.
> I have found your refcount patch.
> Most of the rejects happened because the hunk was already applied.
> The new patch is
> http://sandino.araico.net/parches/vserver/patch-2.6.38.4-vs2.3.0.37-rc15-against-grsec-2.2.2-201104232142-KB2-unstable.diff
> As Herbert asked, the patch is vserver against a grsec-patched kernel.
>
> I have to go to sleep. I will try the new patch tomorrow.
>> I'll try to spin a new kernel this evening...
>>
>> (ps. what system calls are you talking about? i haven't done any 2.6.38
>> kernel yet, so it would be nice to know and not have to look ;)
> Merging parameters in function calls like 'var =
> func(vx_xxx(foo,grsec_yyy(bar)));'
> A couple of those; the rest of the rejects are cleaner.
> Not too complicated.
>> KR
>>
>> Rik Bobbaers
>>
>> -- http://harry.enzoverder.be
>>
>>> I checked all the rejects and applied them manually. I had to merge a
>>> couple of function calls manually either because both vserver and grsec
>>> patches modified the same line.
>>>
>>> The kernel compiles and boots without crashing but I have found some
>>> functionality missing like the old token bucket sched, having to remove
>>> the sched directory from /etc/vservers/myvserver/sched
>>>
>>> Running the cherokee webserver inside a vserver with ~40 requests per
>>> second makes the kernel crash but I haven't had the time to try to
>>> reproduce the crash. The same webserver running inside a simple chroot
>>> does not crash the kernel.
>
>
> --
> Sandino Araico Sánchez
> http://sandino.net

-- 
Sandino Araico Sánchez
http://sandino.net
Received on Sat May 14 09:00:56 2011
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