On 10/15/2010 04:00 AM, Karsten Wemheuer wrote:

> I setup an asterisk system (asterisk 1.8-rc3, dahdi-linux-2.4.0 with
> dahdi-extra from Tzafrirs git, kernel 2.6.35.4). The hardware is an
> older pc system with Celeron CPU (2.5 GHz) with a Beronet BN4S0 ISDN
> card. The system starts without any errors.
> 
> I discovered a severe issue. The kernel panics on a very small load. The
> first call normally gets through. If I start the second or third call
> and sometimes when I terminate the first call, the system panics (Oops
> text on console).
> 
> After solving some difficulties (the relevant part of the Oops text
> scrolls out of the monitor, no serial interface), I get the text via
> netconsole. It seems to me, that the panic occurred in oslec (function
> "oslec_update"). But maybe I am wrong with this. In the oslec code there
> is a patch to enable MMX. After switching this off, the problem
> disappeared. AFAIK the cpu supports mmx.
> 
> Where should I address this issue to? Is it a known issue?
> 

Do you have CONFIG_DAHDI_MMX defined in include/dahdi/dahdi_config.h?

-- 
Shaun Ruffell
Digium, Inc. | Linux Kernel Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at: www.digium.com & www.asterisk.org

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