linux操作分析lab3

内核准备
内核和相关环境

wget https://raw.github.com/mengning/mykernel/master/mykernel-2.0_for_linux-5.4.34.patch
sudo apt install axel
axel -n 20 https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/linux-5.4.34.tar.xz
xz -d linux-5.4.34.tar.xz
tar -xvf linux-5.4.34.tar
cd linux-5.4.34
patch -p1 < ../mykernel-2.0_for_linux-5.4.34.patch
sudo apt install build-essential gcc-multilib
sudo apt install qemu # install QEMU
sudo apt install libncurses5-dev bison flex libssl-dev libelf-dev

内核配置

make defconfig # Default configuration is based on 'x86_64_defconfig'
make menuconfig

# 打开debug相关选项 输入y和n进行选中或取消选中
Kernel hacking  --->
    Compile-time checks and compiler options  --->
        [*] Compile the kernel with debug info
        [*]   Provide GDB scripts for kernel debugging
 [*] Kernel debugging
# 关闭KASLR，否则会导致打断点失败 
Processor type and features ---->
    [] Randomize the