In a method for debugging device drivers of a computing device, a command line interface (CLI) is created in a user space of an operating system of the computing device. A command input by a user is received through the CLI, and transmitted to a kernel space of the operating system. The command is parsed to determine a function of a device driver and parameters of the function. An address of the function is inquired in the kernel space. The function is debugged according to the address of the function in the kernel space.