Fatal trap 18: integer divide fault while in kernel mode

*very* fresh cvsup, booting single to do installworld cores
on boot

[sorry, forgot trace]

KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2006 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD 7.0-CURRENT #23: Wed Jan  4 16:01:13 UTC 2006
    root_at_work0.psg.com:/usr/obj/usr/src/sys/WORK0


Fatal trap 18: integer divide fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer     = 0x20:0xc05e6295
stack pointer           = 0x28:0xc0820d04
frame pointer           = 0x28:0xc0820d14
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 0 ()
[thread pid 0 tid 0 ]
Stopped at      vm_coloring_init+0x35:  idivl   pq_cachenways,%eax
db> trace
Tracing pid 0 tid 0 td 0xc0692660
vm_coloring_init(3,c0820d60,c05e156a,c069d7a4,c065ad0e) at vm_coloring_init+0x35
vm_pageq_init(c069d7a4,c065ad0e,0,1,c04caf4b) at vm_pageq_init+0x9
vm_page_startup(c0c3d000,a,c0820d88,c049dbf5,0) at vm_page_startup+0x10a
vm_mem_init(0,81e000,81ec00,81e000,0) at vm_mem_init+0x18
mi_startup() at mi_startup+0xb5
begin() at begin+0x2c