Tegra kernel panics without DIAGNOSTIC

[John Klos <john%ziaspace.com@localhost>]

An NVIDIA Tegra system panics with a NetBSD-current kernel built from 
the sources as of three hours ago when compiled without options 
DIAGNOSTIC:

...
gpio25 at tegragpio0 (Z): 8 pins
gpio26 at tegragpio0 (AA): 8 pins
gpio27 at tegragpio0 (BB): 8 pins
gpio28 at tegragpio0 (CC): 8 pins
gpio29 at tegragpio0 (DD): 8 pins
gpio30 at tegragpio0 (EE): 8 pins
simplebus0 at fdt0: regulators
fdt1 at simplebus0
fregulator0 at fdt1: +VDD_MUX

uvm_fault(0x81685928, 0, 1) -> e
Fatal kernel mode data abort: 'Translation Fault (S)'
trapframe: 0x816cf948
FSR=00000005, FAR=00000000, spsr=20000153
r0 =00001fff, r1 =00000001, r2 =00000000, r3 =00000000
r4 =816cf9dc, r5 =00020000, r6 =0000e4a0, r7 =815007c8
r8 =00000000, r9 =81683758, r10=816cfa14, r11=816cf9c4
r12=000000b3, ssp=816cf998, slr=81683758, pc =813150b0

Stopped in pid 0.1 (system) at  813150b0:       ldr     r0, [r3]
db{0}>

When I hit a key, it immediately rebooted. Ideas?

John