Wasn't there a module in the early 2000s that set its license to something like:

    "GPL\0 with the following exceptions ..."

So when the kernel pieces that enforced GPL_ONLY did a strcmp on the license, it came up as GPL.

I forget who it was who tried that.

This came up in a Google search:

https://lwn.net/Articles/220349/

https://lkml.org/lkml/2006/10/27/233

https://lwn.net/Articles/118269/