Comment 4 for bug 1433155

This is not a bug! It's expected behavior!
The SIGRTMIN number you quoted from /usr/include/asm/signal.h is a kernel minimum number of real-time signal, which is usually used by pthread library and not available for user apps.

Both of these two Stack Exchange questions have explained this:

http://unix.stackexchange.com/questions/155829/why-does-kill-l-not-list-signal-numbers-of-32-and-33
http://stackoverflow.com/questions/12680624/what-has-happened-to-the-32-and-33-kill-signals

Now, should this "bug" be closed?