From owner-freebsd-hackers@FreeBSD.ORG  Tue Jun 15 22:42:59 2004
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From: "Andrew Kinney" <andykinney@advantagecom.net>
Organization: Advantagecom Networks, Inc.
To: Tamas TEVESZ <ice@wormhole.hu>
Date: Tue, 15 Jun 2004 15:43:08 -0700
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cc: freebsd-hackers@freebsd.org
Subject: Re: 4.10-RELEASE and -STABLE crashing regularly under load
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On 15 Jun 2004 at 22:34, Tamas TEVESZ wrote:

> #6  0xc0213fd9 in pmap_qenter (va=0, m=0xfa135548, count=4) at
> #/usr/src/sys/i386/i386/pmap.c:848

There's your problem.  va=0 usually happens when your run out of KVA 
and pmap functions choke (trap 12 panic) when they see va=0 or 
numbers derived from that variable.  It's not nice, but it's what 
happens.  This is the number one problem on systems with 2GB+ of RAM 
(you have 4GB, so you'll run into this a lot).

Try increasing KVA_PAGES in your kernel config and recompiling.  It's 
worked in almost every other case like this where large memory 
configurations are in use.

Sincerely,
Andrew Kinney
President and
Chief Technology Officer
Advantagecom Networks, Inc.
http://www.advantagecom.net