brcmfmac: nexmon_ioctl_handling: NEXMON: nexmon_ioctl_handling: error on copy ifr_data

[Mister-X-]

Original bug report: seemoo-lab/nexmon#32

after loading Nexmon on Kali (on a Raspberry Pi 3) and successfully getting packets in monitor mode, I noticed the system seems to get the following message in dmesg when just running airmon-ng without any parameters (Aircrack-ng 1.2rc4):

[ 2271.750875] brcmfmac: nexmon_ioctl_handling: NEXMON: nexmon_ioctl_handling enter
[ 2271.750903] brcmfmac: nexmon_ioctl_handling: NEXMON: nexmon_ioctl_handling: error on copy ifr_data
[ 2271.750980] brcmfmac: nexmon_ioctl_handling: NEXMON: nexmon_ioctl_handling enter
[ 2271.752901] brcmfmac: nexmon_ioctl_handling: NEXMON: nexmon_ioctl_handling enter
[ 2271.752927] brcmfmac: nexmon_ioctl_handling: NEXMON: nexmon_ioctl_handling: error on copy ifr_data

I believe one of them is a leftover debug message and the other one is the actual error (even though I don't see any error output in airmon-ng.

uname -a:

Linux kali 4.4.39-v7_Re4son-Kali-Pi-TFT+ #1 SMP Fri Dec 30 09:58:20 CST 2016 armv7l GNU/Linux

[Tanner85]

I confirm this behaviour