On Sat, 28 Apr 2007, Andrew Doran wrote:
>>> That should not happen unless there is a bug somewhere. How many CPUs does
>>> the machine have? If it happens again, could you ask the custy to do a:
>>>
>>> mach cpu 0
>>> tr
>>> mach cpu 1
>>> tr
>>> mach cpu ...
>>> tr
>>>
>>> A dump of the held simplelocks would be good to get too
>>
>> And to follow up my last mail which linked to:
>>
>> http://projects.precedence.co.uk/netbsd/ddb2.jpg
[snip]
>> In common with the first panic, this seems to be on process exit in
>> pmap_destroy.
>
> Hrm. I don't think there is a lock ordering problem now - I think that
> something is forgetting to release the pmap lock. Is this system a Pentium
> Pro by any chance?

And another, this time at the customer's (Dual core P4 IBM x3250):

http://projects.precedence.co.uk/netbsd/ddb3/

The failure mode is same each time.

-- 
Stephen