Date: Tue, 5 May 1998 08:46:27 +1000 (EST) From: John Birrell <jb@cimlogic.com.au> To: luoqi@watermarkgroup.com (Luoqi Chen) Cc: current@FreeBSD.ORG, dyson@FreeBSD.ORG Subject: Re: 'fatal trap 12' on boot (smp and up) Message-ID: <199805042246.IAA20176@cimlogic.com.au> In-Reply-To: <9805041102.AA13313@watermarkgroup.com> from Luoqi Chen at "May 4, 98 07:02:01 am"
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Luoqi Chen wrote:
> > I think I made a mistake in my patch that cause the core dump. Try to
> > enclose the two lines in the patch that reset fs and gs inside
> > if (pcb == curpcb) {}. Without this, the code might trash fs & gs in
> > another process' context.
> Probably pcb->pcb_fs and pcb->pcb_gs need to be reset too. Please use the
> following patch (I've also sent it in a follow-up to the original PR i386/6219).
This patch solves my problem, thanks! I'll check with John Dyson that
it looks OK, but a forked, kernel threaded program correctly handles
mutexes and condition variables.
--
John Birrell - jb@cimlogic.com.au; jb@freebsd.org http://www.cimlogic.com.au/
CIMlogic Pty Ltd, GPO Box 117A, Melbourne Vic 3001, Australia +61 418 353 137
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