Antony Mawer fbsd-current at
Fri Nov 19 01:00:23 PST 2004

On 19/11/2004 6:59 PM, Peter Holm wrote:
> On Mon, Nov 15, 2004 at 03:46:15PM -0500, John Baldwin wrote:
>>On Friday 12 November 2004 07:33 am, Peter Holm wrote:
>>>GENERIC HEAD from Nov 11 08:05 UTC
>>>The following stack traces etc. was done before my first
>>>cup of coffee, so it's not so informative as it could have been :-(
>>>The test box appeared to have been frozen for more than 6 hours,
>>>but was pingable.
>>A weak guess is that you have the system in some sort of livelock due to 
>>fork()?  Have you tried running with 'debug.mpsafevm=1' set from the loader?
> OK, I've got some more info:
> Looks like a spin in uma_zone_slab() when slab_zalloc() fails?

I thought that sounded vaguely familiar -- not sure if it's relevant but 
I did see that Lukas (le@) had pointed to freezes that looked to be in 
the similar area (going off the backtrace he posted). I haven't looked 
into it at all but thought it might be relevant to someone looking at 
the issue:


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