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To: peter@spinner.dialix.com
Cc: smp@bluenose.na.tuns.ca, smp@freebsd.org
Subject: Re: More info about fatal trap 12 
In-Reply-To: Your message of "Sat, 07 Dec 1996 02:15:12 +0800"
References: <199612061815.CAA19205@spinner.DIALix.COM>
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Date: Fri, 06 Dec 1996 19:23:21 +0100
From: Tor Egge <Tor.Egge@idt.ntnu.no>
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> Tor Egge wrote:
> > A closer examination of the kernel dump shows that the first page fault 
> > is from the user process /bin/sh. The call stack is
> [..]
> > The first access to the stack by the child process failed when trying 
> > to save the return value from fork.
> > 
> > The parent process was running on CPU #1, and the child process
> > was running on CPU #0.
> > 
> > - Tor Egge
> 
> Hmm!!  The plot thickens!  I noticed the failing pmap_enter was at
> 0xefbfd000 which is the first stack page already, but I wasn't sure
> if it was the initial creation, or if the stack had been paged out
> and was failing on pagein.

No pageouts.

(kgdb) print/x cnt.v_free_count
$20 = 0x1b607

- Tor Egge