Wireless tools - Illegal Instruction

After upgrading my rx3417 (acx100) (latest hh CVS kernel)

to wireless-tools_29-pre21-r0_armv4t.ipk

when i bring up the do an iwconfig wlan0 i get the message illegal
instruction.

Is this a firmware, kernel driver, lib or userland problem? Where to start
reporting/debugging.

The last few lines of strace are

) = 35
ioctl(3, SIOCGIWNAME, 0xbe920330) = -1 EOPNOTSUPP (Operation not
supported)
ioctl(3, SIOCGIFFLAGS, {ifr_name="usb0",
ifr_flags=IFF_UP|IFF_BROADCAST|IFF_RUNNING|IFF_MULTICAST}) = 0
write(2, "usb0 no wireless extensions"..., 35usb0 no wireless
extensions.

) = 35
ioctl(3, SIOCGIWNAME, 0xbe920330) = 0
ioctl(3, SIOCGIWNWID, 0xbe920330) = -1 EOPNOTSUPP (Operation not
supported)
ioctl(3, SIOCGIWFREQ, 0xbe920330) = 0
--- SIGILL (Illegal instruction) @ 0 (0) ---
+++ killed by SIGILL +++
Received on Tue Oct 16 2007 - 04:57:15 EDT