Re: tstile lockups - side note

[christos%astron.com@localhost (Christos Zoulas)]

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