Jakob Goldbach wrote:
> On Wed, 2008-01-09 at 11:55 +0300, Kirill Korotaev wrote:
> 
>>AFAIR it can be ignored.
> 
> 
> Great. 
> 
> 
> 
>>BTW, In 2.6.18 (what kernel are you running?) these lines are changed to:
>>         WARN_ON(__is_virtual_pid(pgrp));
>>         WARN_ON(__is_virtual_pid(session));
>>
> 
> 
> I am using 2.6.18 from Debian. They also distribute
> patch-026test015-combined.gz in kernel-patch-openvz.deb 
> It contains:

026test015? Maybe it's a misprint and you mean 028test015?
cause 026xxx series was for 2.6.16 kernels, not 2.6.18.

Regardless of this, it is more than outdated version, so please update
up to latests 028stab051 available.
For debian it can be found here:
http://download.openvz.org/debian-systs/

Thanks,
Kirill