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From: Philip Kizer <pckizer@nostrum.com>
Date: Thu, 27 Oct 2005 10:53:31 -0500
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Cc: Robert Watson <rwatson@freebsd.org>
Subject: Re: Problem remains with FreeBSD 6.0-RC1 as seen in RELENG_5
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On Oct 25, 2005, at 05:07, Robert Watson wrote:
> There are a couple of possible sources, so if this is reproduceable  
> and you don't mind trying some diagnostic patches, I've attached a  
> first one below.  This checks for the case where the looping in the  
> unp_gc() routine becomes unbounded due to a possible lack of  
> synchronization in the handling of marking and counting of  
> marking.  It needs INVARIANTS to be compiled in to work; if it  
> fires, this will suggest an avenue to explore.
>

On Oct 26, 2005, at 01:46, Philip Kizer wrote:
> OK, patch applied and it ran all day, finally hanging again.

And...I have another one, this one's unusual compared with the others  
(in that it looks like something in the aac driver noticed a problem;  
but, as you can see, the system kept running...I didn't get  
notification of services having a problem till hours after those  
messages started).

     http://www.nostrum.com/hang/hang.RELENG_6-trace-2005-10-27-0.txt


If you want some comparisons, I have two recent hangs from one of my  
RELENG_5 machines, too:

     http://www.nostrum.com/hang/hang.RELENG_5-trace-2005-10-26-0.txt
     http://www.nostrum.com/hang/hang.RELENG_5-trace-2005-10-27-0.txt

I'll respond to my original post in -stable with the RELENG_5 hangs  
if needed.


Thank you,
Philip