Re: infinite spin in RT when booting with DHCP on

["Tim Sander" <tim.sander@hbm.com>]

Hi 

Am Donnerstag, 2. Februar 2012, 22:34:26 schrieb Steven Rostedt:
> On Thu, 2012-02-02 at 21:13 +0100, Uwe Kleine-König wrote:
> > enabled the ksoftirq is also running wild with 3.0-rt. This also happens
> > when I fail to reproduce that on a pcm043 machine using 3.0.18-rt34. Can
> > you provide me your config. Does the problem occur on every boot for
> > you? If not, how often do I need to reboot?
> 
> Note, you also said (on IRC) that you boot off this card via NFS root.
> I'm not sure Tim has the same setup, and that may be a big difference in
> how this bug comes about.

As i said, it is not to easy to trigger. I needed to start connmand and 
dhclient in parallel and then do "ifconfig eth0 up/down" to trigger it 
sometimes. It is easier to trigger when the ubifs background task is running. 
But that apears normal "behaviour" for a race condition like this.
 
> It's a race issue, and it may require enabling the network interface
> after the system is up and running.
Yep, it's "hard" to hit this error on the first time. We have this error for 
more than a year now, and it only came to my attention after we had our qa 
test rack up and running.

Best regards
Tim

Hottinger Baldwin Messtechnik GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany | www.hbm.com 

Registered as GmbH (German limited liability corporation) in the commercial register at the local court of Darmstadt, HRB 1147  
Company domiciled in Darmstadt | CEO: Andreas Huellhorst | Chairman of the board: James Charles Webster

Als Gesellschaft mit beschraenkter Haftung eingetragen im Handelsregister des Amtsgerichts Darmstadt unter HRB 1147 
Sitz der Gesellschaft: Darmstadt | Geschaeftsfuehrung: Andreas Huellhorst | Aufsichtsratsvorsitzender: James Charles Webster

The information in this email is confidential. It is intended solely for the addressee. If you are not the intended recipient, please let me know and delete this email.

Die in dieser E-Mail enthaltene Information ist vertraulich und lediglich für den Empfaenger bestimmt. Sollten Sie nicht der eigentliche Empfaenger sein, informieren Sie mich bitte kurz und loeschen diese E-Mail.
--
To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html