The code in question was re-licensed under GPL without the author's permission. And according to the BSD license, the copyright must remain intact. A person can

The code in question was re-licensed under GPL without the author's permission. And according to the BSD license, the copyright must remain intact. A person can use BSD licensed code in a larger work under GPL or they can put the modifications under GPL, but they have no authority to change the original BSD license. The belief of being able to re-license BSD code is quite prevalent in the Linux community and is often espoused here on Hacker News.