mpd5/Netgraph issues after upgrading to 7.4

[Arnaud Lacombe]

Hi,

On Fri, Jun 15, 2012 at 7:50 AM, Eugene Grosbein <egrosbein at rdtc.ru> wrote:
> 15.06.2012 18:33, Przemyslaw Frasunek пишет:
>> Dear All,
>>
>> unfortunately, one of my mpd5 PPPoE access servers started panicing every few
>> hours.
>>
>> I'm running recent 8.3-STABLE (as of 23th May) with WITNESS, INVARIANTS and
>> DEBUG_MEMGUARD compiled. Unfortunately, I'm unable to catch crashdump. For some
>> reason, it is not saved on dumpdev.
>
> The reason is that 8-STABLE fails to stop scheduler on panic
> that breaks writing of crashdumps.
>
> 8.3-STABLE has new sysctl kern.stop_scheduler_on_panic.
> You should set it to 1 to get crashdumps saved.
>
Is there technical reason to have the scheduler still running after panic() ?

 - Arnaud

> One more: does your box has PS/2 keyboard or USB? It matters too.
> For systems having USB keyboard there is another patch needed to obtain
> crashdumps (by Andriy Gapon):
>
> http://www.kuzbass.ru/freebsd/patches/stop_scheduler_on_panic.usb.diff
>
> Eugene Grosbein
>
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