An interesting SO post about what BUG_ON does http://stackoverflow.com/questions/6359700/using-assertion-in-the-kernel http://stackoverflow.com/questions/63597

An interesting SO post about what BUG_ON does http://stackoverflow.com/questions/6359700/using-assertion-in-the-kernel http://stackoverflow.com/questions/6359700/using-assertion-i... Essentially, it causes the kernel to panic immediately.