Re: Dumping kernel in SMP env

From: Ivan Voras <ivoras_at_freebsd.org>
Date: Wed, 22 Oct 2008 11:13:31 +0200
Willem Jan Withagen wrote:
> Ivan Voras wrote:
>> Willem Jan Withagen wrote:
>>> Hi,
>>>
>>> Once again trying to get a little further with the freezes and lockups.
>>> But panic-ing the kernel from the debugger only works with one
>>> processor. Doing it with both processors active just generates 2
>>> backtraces, but no dump.
>>
>> If you're asking if kernel dumps work on 8-CURRENT on SMP then the
>> answer is yes - I made a couple of them the day before yesterday.
>>
>>> Is this a known fact? There was a similar question beginning of the
>>> month asking about 'call doadump' not working, without an answer.
>>> If it should work, I'll try and recreate the traceback.
>>
>> Both automatic and doadump work for me.
> 
> Right, that was the question.
> 
> So then I have a problem there that needs to be fixed first.
> I'll try to get a serial console working and capture the trace and or
> any other stuff that can help.
> 
> Suggestions for things to look at are welcome

Your problem might be caused by bad hardware. I don't have anything
specific to suggest, except looking at
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html



Received on Wed Oct 22 2008 - 07:13:20 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:39:36 UTC