Target Software Outline

We are targeting RISC-V, so we will be using buildroot for our toolchain and Linux build. We need to build the following:

• fw_jump.elf, Image, and rootfs.ext2, our firmware jump binary, linux kernel image, and root filesystem, respectively. These three files are expected by the public RISC-V platform model for SIMICS to boot Linux. Other approaches can be used but will require significantly more customization.
• tutorial-mod.ko our tutorial kernel module. We'll create a kernel module which provides a virtual device which can be controlled via IOCTL.
• tutorial-mod-driver a user-space application which will trigger the funcionality we want to fuzz in our kernel module. We'll discuss how to harness both by compiling the harness code into the kernel module and by compiling the harness code into the user-space driver application.

We'll use the br2-external mechanism to keep our kernel module package separate from the buildroot tree.