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Date:      Mon, 10 May 1999 18:27:01 -0700 (PDT)
From:      Cliff Skolnick <cliff@steam.com>
To:        David Greenman <dg@root.com>
Cc:        freebsd-stable@FreeBSD.ORG, luoqi@FreeBSD.ORG
Subject:   Re: vm_fault deadlock and PR 8416 (was Re: Strange reboot saga ) 
Message-ID:  <Pine.BSF.4.10.9905101826450.453-100000@lazlo.internal.steam.com>
In-Reply-To: <199905110116.SAA00175@implode.root.com>

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I'm using the later patch, the one patching kern_lock.c.

Cliff

On Mon, 10 May 1999, David Greenman wrote:

> >
> >After removing the patch from my system, poof - deadlock.
> >
> >I did the ctl-printscrean thing, and everything looked ok.  There were a
> >bunch of locks, shared, but I could not make much sense beyond the "ps" and
> >doing a trace which did not give me much info since I could not figure out
> >how to trace a specific process.  :(
> >
> >Anyways this is a production email and dns system, so I can't futz with it
> >too much.  I've added the patch in and expect my system will run again until
> >*I* take it down.  Usually it locks up within 24 hours without the patch,
> >and it has run 4+ days with no lockup with the patch.  After 4 days I took
> >the system down to remote the patch and add debugging to my kernel, monday
> >rolls around and poof - locked up.
> >
> >I would urge someone who has more of a clue about the locking issues to take
> >a look at this.
> 
>    There are two patches mentioned in PR 8416...which one are you using?
> 
> -DG
> 
> David Greenman
> Co-founder/Principal Architect, The FreeBSD Project - http://www.freebsd.org
> Creator of high-performance Internet servers - http://www.terasolutions.com
> 

--
Cliff Skolnick          | "They that can give up essential liberty to obtain
Steam Tunnel Operations |  a little temporary safety deserve neither liberty
cliff@steam.com         |  nor safety."
http://www.steam.com/   |                   -- Benjamin Franklin, 1759



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