linux-kernel-4.9.40 or use wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.9.40.tar.xz and after extract it.

tar -xvf linux-4.9.40.tar.xz

./copy_files.sh

sudo ./compile_kernel.sh In order to compile linux kernel config file must created. We are creating config file with default values. Follow the following steps. After doing that compiling script will continue. It can take 30+ minutes based on computer specifications.

After compiling kernel reboot the machine with reboot command.

Check your new kernel version with uname -r command. ##Testing Run allocate_memory script by typing ./allocate_memory.sh command. It allocates memory and return virtual address and physical address.

To check physical address of other process we need to know process id and virtual address of that process.

Check the id of testscript with typing ps -aux | grep allocate_memory.o

Run trysyscall script by typing ./trysyscall.sh pid virtual_address Where pid is result of ps -aux | grep allocate_memory.o and virtual_address is printed value after running ./allocate_memory.sh script.

By doing that we can reach physical value of a process within another process with process id and virtual address of that process.