panic when installing from CD with i386

[Chris Gilbert <chris%dokein.co.uk@localhost>]

Hi,

with -current I'm getting a panic when trying to install a system using
boot.iso (typed from photos (which I can upload is someone wants the
full details)):

warning: no /dev/console
Created mfs /dev (437 blocks, 1280 inodes)
./MAKEDEV: missing ./MAKEDEV.local
erase ^?, werase ^W, kill ^U, intr ^C


Reader / writer lock error: rw_vector_enter: locking against myself

lock address : 0x00000000cfa9c028
current cpu  : 2
current lwp  : 0x00000000cfab45e0
owner/count  : 0x00000000cfab45e0
flags        : 0x0000000000000004

panic: lock error
stopped in pid 1337.1 (mount_ffs) at netbsd:breakpoint+0x4: popl %ebp
db{2}>

trace shows:
breakpoint
panic
lockdebug_abort
rw_abort
rw_vector_enter
vfs_busy
getnewvnode
vfs_allocate_syncvnode
do_sys_mount
sys___mount50
syscall

The machine is a quad phenom 9500, however, booting with no ACPI and no
SMP causes the same panic.

Source is -current as of Sun May  4 14:01:14 UTC 2008

Thanks,
Chris