Panic with CD use

Hi,

This is a 'me too' report for the problems that have been reported on this list
over the last few weeks with problems ripping CDs and/or mounting CDs.  I have
not attached a panic report as it is essentially the same as those already
reported (a page fault in devstat_remove_entry), but I can if requested.  I
first saw the problem last week (though I haven't tried CD ripping for several
months so I can't say when it started), and it is still there with sources from
yesterday (Sunday).    I can consistently reproduce the panic by inserting an
audio CD, typing cdparanoia -vsQ, then inserting a data CD and typing mount
/cdrom.  One possibly interesting data point is that I am now running a kernel
with INVARIANTS turned on, and I can't reproduce the panic.  Any suggestions to
help narrow down the problem?

Simon