From owner-freebsd-current  Sun Mar 25  9: 2: 1 2001
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Date: Sun, 25 Mar 2001 19:01:55 +0200
From: Szilveszter Adam <sziszi@petra.hos.u-szeged.hu>
To: current@freebsd.org
Subject: Re: midi causes panic on boot? (update)
Message-ID: <20010325190155.A1795@petra.hos.u-szeged.hu>
Mail-Followup-To: Szilveszter Adam <sziszi@petra.hos.u-szeged.hu>,
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References: <20010312163850.A28997@petra.hos.u-szeged.hu> <20010314004953.B549@zippy.mybox.zip> <200103140904.f2E945607519@silver.carrots.uucp.r.dl.itc.u-tokyo.ac.jp>
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In-Reply-To: <200103140904.f2E945607519@silver.carrots.uucp.r.dl.itc.u-tokyo.ac.jp>; from tanimura@r.dl.itc.u-tokyo.ac.jp on Wed, Mar 14, 2001 at 06:04:05PM +0900
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Hello folks,

I have tried it with today's -CURRENT, and as soon as I try to boot a
kernel with the options (this has occured also earlier but wanted to make
sure that I try today's sources first)

device midi
device seq

(my sound card is a ISAPnP SB 64 AWE) 

I use device sbc too.

the kernel still panics with Fatal Trap 12. I have Seigo Tanimura's 
fixes, and yet this still happens. I do not have a serial console, so here
a short trace output transcribed:

_mtx_lock_sleep
mpu_uartmode
mpu_attach
mprobe_attach
device_probe_and_attach
bus_generic_attach
sbc_attach
device_probe_and_attach
isa_probe_children
configure
mi_startup()
begin()

At the point of panic not even the swap partition is available yet so the
machine does not dump. How can I force it? 

I would like to offer any and all help to anyone wanting to debug this; I
can reproduce the problem at will and luckily no FS corruption occurs
because the panic is so early on boot.:-)

Of course, as soon as I omit the midi part, the kernel boots fine, and the
sound card works too.  
-- 
Regards:

Szilveszter ADAM
Szeged University
Szeged Hungary

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