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Date: Mon, 08 Oct 2007 22:12:26 +0200
From: Kris Kennaway <kris@FreeBSD.org>
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To: Per olof Ljungmark <peo@intersonic.se>
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Cc: freebsd-questions@freebsd.org
Subject: Re: freezing, hard locking, and debug.mpsafenet=0
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Per olof Ljungmark wrote:
> Kris Kennaway wrote:
>> Per olof Ljungmark wrote:
>>> Kris Kennaway wrote:
>>>> Per olof Ljungmark wrote:
>>>>> Elvar wrote:
>>>>>> Hi there,
>>>>> <snip>
>>> <snip>
>>>>>
>>>>> Could someone familiar with -CURRENT perhaps explain why this 
>>>>> option (debug.mpsafenet=0) is gone?
>>>>
>>>> Because it was an obsolete option that was complicating the code and 
>>>> holding back further development.
>>>>
>>>> If you are seeing bugs, you need to follow through with obtaining 
>>>> the necessary debugging (see the developers handbook), then submit a 
>>>> PR. Note that if you don't do this then you cannot reasonably expect 
>>>> anyone to fix your problems.
>>>
>>> Kris, if a system locks up completely (does not take any input, no 
>>> dumps, just stop) is there anything one can do in terms of debugging?
>>  >
>>  > I would post more information if I knew how to get it.
>>
>> Of course, and it's documented in the above place.  Did you read it yet?
> 
> I've used that information on other occasions but then at least the 
> keyboard was functional. Not sure how to interpret what is says in a 
> proper fashion, I could guess of course: What I see is termed a 
> "deadlock"? I'll definitely try that one on this little bugger then.

Yes.  Break to DDB, then proceed.

Kris