lwfinger

What does 'cat /proc/version' say? What does 'gcc --version' say?

The kernel was compiled with gcc version 4.8.3 20140303 . You are compiling the module with gcc 4.6.3. That is not the same version!

The kernel was cross compiled on some other platform. You have three choices: (1) Build the kernel on the Pi. That takes ~12 hours. (2) Set up the same tool...

Which branch of the driver did you build? I realize that it is my fault for having more than one branch, but it would be helpful if people would automatically...

I seldom use ad-hoc mode, and it will be some time before I would be able to work on this problem. It would be helpful if you set up wireshark...

The tcpdump output will likely not be sufficient. It only sees what makes it through the driver. Any discarded packets are not seen, but will be present in the over-the-air...

Those look more promising. One other piece of info would be useful: In each case, what are the last two digits of the MAC address of the two interfaces?

Welcome to my world. I have no knowledge of the internal workings of the chip other than what I can infer from the code, and you see that as well.

Yes, I can contact them and ask questions, but I need to have the proper over-the-air captures. Until I get such data to send them, I choose not to bother...

That is a kernel panic. We need to know what is logged when the crash happens.