[Buildroot] Problems with 'iw'

[Buildroot] Problems with 'iw'

[Jonas Ludvigsson]

Hi,

I'm trying to enable the wlan module on a TI AM335x EVM Board and have successfully been able to add drivers and firmware for wl1271.
But when I'm trying start a scan using 'iw' I get 'Segmentation fault'. In fact all 'iw' always returns segmentation fault.

I added support for 'iw' in Buildroot (2013.08) which is configured to use its internal toolchain (uClibc 0.9.33.x),
kernel version (3.2.42) and Busybox (1.21.x).

What could be the problem?

Regards,
Jonas
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[Buildroot] Problems with 'iw'

[Thomas Petazzoni]

Dear Jonas Ludvigsson,

On Mon, 16 Sep 2013 12:07:35 +0000, Jonas Ludvigsson wrote:

> I'm trying to enable the wlan module on a TI AM335x EVM Board and have successfully been able to add drivers and firmware for wl1271.
> But when I'm trying start a scan using 'iw' I get 'Segmentation fault'. In fact all 'iw' always returns segmentation fault.
> 
> I added support for 'iw' in Buildroot (2013.08) which is configured to use its internal toolchain (uClibc 0.9.33.x),
> kernel version (3.2.42) and Busybox (1.21.x).
> 
> What could be the problem?

Hum, many things. Your best starting point is probably to do:

# ulimit -c unlimited
# iw

and then take the generated 'core' file, bring it into your cross gdb
on your development machine, and look at the backtrace to see where the
crash is happening.

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com