Re: tstile lockups - side note

[Donald Lee <MacPPC2%c.icompute.com@localhost>]

>In article <p06240800cdf2d0022963@[71.39.101.51]>,
>Donald Lee  <MacPPC2%c.icompute.com@localhost> wrote:
>>When I boot a 6.x kernel on my Quicksilver
>>Power Mac G4, the speaker goes nuts.  The /dev/audio driver appears to be
>>uninitialized.  I have worked around this by putting a command in
>>/etc/rc.local:
>>
>>      dd if=/dev/zero of=/dev/audio bs=1 count=1
>>
>>This stops the white noise.
>>
>>Unfortunately, when I boot the LOCKDEBUG kernel, it panics with the
>>traceback below.
>>
>>Anyone know off hand of a simple fix?  As long as I'm building kernels,
>>I may as well fix it.
>>
>>If you want to reproduce it, just boot any kernel with LOCKDEBUG and
>>do "cat /dev/audio".  Boom.
>>
>
>That looks like snapper-specific. What is the lockdebug message? It could
>be that we need to make the mutex in ki2c.c a spin mutex.
>
>christos

I included above the traceback from the syslog.  Is there something else that
I can gather?  It's certainly easy to reproduce.

This is the one that reboots immediately, clearing the screen too fast
for me to read it.  The only bread crumbs I have are in syslog.

-dgl-