Re: recent 5.1-CURRENT kernel panics on acd0 probe/attach, IBM T30

The fun of getting digests.  Roughly 30 seconds after sending my
email I saw the message about atapicam from Kenneth to Martin.

Removing atapicam from my kernel configuration fixed the problem
for me as well.

nomad

>Subject: Re: Kernel panic with CAM on current (fatal trap 12)
>From: "Kenneth D. Merry" <ken_at_kdm.org>
>Date: Wed, 27 Aug 2003 11:53:28 -0600 (10:53 PDT)
>To: Martin <nakal_at_web.de>
>Cc: FreeBSD Current <freebsd-current_at_freebsd.org>
>
>On Wed, Aug 27, 2003 at 16:54:05 +0200, Martin wrote:
>> On Wed, 2003-08-27 at 02:27, Kenneth D. Merry wrote:
>> > There are known problems with atapicam.
>> > 
>> > Try enabling DDB in your kernel config, and get a stack trace.  If you're
>> > panicing in free_hcb(), disable atapicam and try again.
>> 
>> Yes. I did exactly as you said and I got panic in free_hcb(). I disabled
>> atapicam and now it does not panic anymore.
>> 
>> And now? :)
>
>Wait for Thomas or someone else to fix the problem.
>
>Ken
>-- 
>Kenneth Merry
>ken_at_kdm.org
>
>3.31.	recent 5.1-CURRENT kernel panics on acd0 probe/attach, IBM T30
>Subject: recent 5.1-CURRENT kernel panics on acd0 probe/attach, IBM T30
>	laptop
>From: Lee Damon <nomad_at_castle.org>
>Date: Wed, 27 Aug 2003 10:55:05 -0700
>To: current_at_freebsd.org
>
>: || tylendel.castle.org [10] ; uname -a
>FreeBSD tylendel.castle.org 5.1-CURRENT FreeBSD 5.1-CURRENT #38: Wed Aug 27 09:05:21 PDT 2003     root_at_tylendel.castle.org:/users/FreeBSD-5.0/obj/users/FreeBSD-5.0/src/sys/TYLENDEL  i386
>
>The kernel I compiled on 20 AUG recognizes acd0 and loggs the following:
>
>Aug 27 08:24:10 tylendel kernel: acd0: CD-RW <UJDA720 DVD/CDRW> at ata1-master U
>DMA33
>Aug 27 08:24:10 tylendel kernel: cd0 at ata1 bus 0 target 0 lun 0
>Aug 27 08:24:10 tylendel kernel: cd0: <MATSHITA UJDA720 DVD/CDRW 1.03> Removable
> CD-ROM SCSI-0 device 
>Aug 27 08:24:10 tylendel kernel: cd0: 33.000MB/s transfers
>Aug 27 08:24:10 tylendel kernel: cd0: Attempt to query device size failed: NOT R
>EADY, Medium not present - tray closed
>
>However, kernels compiled since Monday's SUP get as far as the initial
>discovery of the acd0 device and then panic with:
>
>	fatal trap 12: page fault while in kernel mode
>	fault virtual address	= 0x0
>	fault code		= supervisor write, page not present
>	instruction pointer	= 0x8 :0xc015ca8e
>	stack pointer		= 0x10 :0xdd79aaac
>	frame pointer		= 0x10 :0xdd79aab8
>	code segment		= base 0x0, limit 0xfffff, type 0x1b
>				= DPL 0, pres 1, def 32 1, gran 1
>	processor eflags	= interrupt enabled, resume, IOPL=0
>	current process		= 19 (swi 3: cambio)
>	kernel: type 12 trap, code=0
>	Stopped at	free_hcb+0x2e:	mov1	%eax,0(xedx)
>	
>When I remove the DVD/CDRW from the system it boots.
>
>Kernel configuration is the one from R. Kevin Oberman with firewire
>turned on.

nomad
 -----------
The cry has been that when war is declared, all opposition should
therefore be hushed.  A sentiment more unworthy of a free country could
hardly be propagated.  If the doctrine be admitted, rulers have only to
declare war and they are screened at once from scrutiny ...  In war,
then, as in peace, assert the freedom of speech and of the press.
Cling to this as the bulwark of all our rights and privileges.
                -- William Ellery Channing

 -----------                       - Lee "nomad" Damon -          \
play: nomad_at_castle.org    or castle!nomad                          \
work: nomad_at_ee.washington.edu                                       \
                                 				    /\
Seneschal, Castle PAUS.                                            /  \
                "Celebrate Diversity"                             /    \