Panic on boot from CD

[Tim Simmons]

Sorry it's taken me a while to respond, I've been out on family leave. I
have tried as you suggested, booting from the open firmware screen instead
of directly from the CD, and I get the same result. 

I downloaded and burned the 6.0RC1 ISO this morning, and get a slightly
different error, but in the same place. The error now reads:

KDB: debugger backends: ddb
KDB: current backend: ddb
Panic: Assertion curthread != NULL failed at
/usr/src/sys/kern/kern_mutex.c:268

KDB: enter: panic
[thread pid -1 tid 0 ]
Stopped at 	0:	illegal instruction 0
Db>


I can't interact with the system at this point to run a stack trace. Any
ideas? Oh, and no, it's not an eMac. It's a PowerMac G4 667mhz w/ 256 megs
ram. This same machine runs fine under OSX.


Tim Simmons
IT Technician
Champion Realty, Inc.
TimSimmons at ChampionRealty.Com
Direct:410-975-3028
Fax: 410-647-1187

-----Original Message-----
From: Peter Grehan [mailto:grehan at freebsd.org] 
Sent: Monday, October 10, 2005 1:15 AM
To: Tim Simmons
Cc: freebsd-ppc at freebsd.org
Subject: Re: Panic on boot from CD

Hi Tim,

> Greetings all, Having an issue booting for the install cd
> 6.0-20050518-SNAP-powerpc-disc1.iso. 
> 
> I get the prompt to press enter to boot (booting /boot/kernel/kernel in x
> seconds), and if I hit enter or let it boot automatically, I get:
> 
> KDB: debugger backends: ddb
> 
> KDB: current backend: ddb
> 
> Panic: mutex All locks list not owned at
/usr/src/sys/kern/kern_mutex.c:299
> 
> KDB: enter: panic
  ...
> Any thoughts? Thanks.

  Would that be an eMac by any chance ? :)

  I've yet to get to the bottom of this, though I have an idea or two as 
to why it's happening.

  In the meantime, the workaround (at least on my ageing eMac), is to 
break into OpenFirmware (cmd-opt-o-f at the boot chime) and manually 
boot from the OpenFirmware prompt

  0 > boot cd:,\boot\loader cd:0

later,

Peter.