Date: Tue, 15 Jan 2008 16:40:04 GMT From: Leo Bicknell <bicknell@ufp.org> To: freebsd-acpi@FreeBSD.org Subject: Re: kern/119675: [acpi] apic_hpet0 probe causes divide by zero kernel panic Message-ID: <200801151640.m0FGe4hT005360@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/119675; it has been noted by GNATS.
From: Leo Bicknell <bicknell@ufp.org>
To: John Baldwin <jhb@FreeBSD.org>
Cc: bug-followup@FreeBSD.org
Subject: Re: kern/119675: [acpi] apic_hpet0 probe causes divide by zero kernel panic
Date: Tue, 15 Jan 2008 11:33:14 -0500
In a message written on Tue, Jan 15, 2008 at 10:13:07AM -0500, John Baldwin wrote:
> You can try the patch below. It fixes a couple of places where we don't
> honor the spec (we don't shut it off in S1 and S2 as required and we don't
> preserve reserved bits in the global configuration register). It also
> fails the attach if the period is zero which should fix your panic and
> just leave you with no HPET.
Good news and bad news.
With the patch "invalid period" is printed out, so I believe it's
correctly detecting the hpet0 issue.
However, I immediately get an "integer divide fault while in kernel
mode" panic and the boot still fails. I tried with boot -v and the
message is right after the "invalid period", so I'm not quite sure
what's causing it.
Any recomendations, other than setting up a kernel debugger to see where
it's coming from?
--
Leo Bicknell - bicknell@ufp.org - CCIE 3440
PGP keys at http://www.ufp.org/~bicknell/
Read TMBG List - tmbg-list-request@tmbg.org, www.tmbg.org
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200801151640.m0FGe4hT005360>