page fault trap with wpa_supplicant

["Pouya D. Tafti" <p%san-serriffe.org@localhost>]

On a new laptop with an Intel 6200 wireless adapter (supported by
iwn0), I reliably observe the following at boot time when
wpa_supplicant is to be started (typed from the screen):

Starting local daemons:.
Updating motd.
iwn0: timeout waiting for adapter to initialize
uvm_fault(0xffffffff80d01da0, 0xffff802007666000, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff804580ba cs 8 rflags 10286 cr2
ffff8020076661f0 cpl 6 rsp ffff8004de3a8f0
kernel: page fault trap, code=0
Stopped in pid 100.1 (wpa_supplicant) at        netbsd:kern_free+0x2d:
   movzwl  0
(%rbx),%r12d
db{3}>

Turning wifi off at boot-time using the hardware switch and enabling
afterwards (and restarting rc.d/wpa_supplicant), however, works.

This is on an amd64-current system installed from the daily builds of
2010-05-19.

Pouya