Upgrade kernel version

• Use the apt manager to update the kernel
。Search the specific kernel version and headers:

$ sudo apt-cache search linux-image-*
$ sudo apt-cache search linux-headers-*


。After installing the specific kernel, update the Grub2

$ sudo update-grub




• Build kernel manually
。Download kernel code
。config

$ uname -a

$ sudo cp /boot/config-$(uname -r) .config
or
$ cp arch/x86/configs/x86_64_defconfig .config

$ make menuconfig
$ make savedefconfig 

。build code and install the new kernel

$ make -j8
$ make modules -j8
$ sudo make modules_install
$ sudo make install

。After installing the specific kernel, update the Grub2

$ sudo update-grub

• Install more tools in the host to build kernel

1. BTF: .tmp_vmlinux.btf: pahole (pahole) is not available
   $ sudo apt install dwarves
2. /bin/sh: zstd: command not found
   $ sudo apt install zstd
3. CONFIG_MODULE_SIG_KEY="cert/xxxtest.pem"
   in Kernel_path/
   $ openssl req -x509 -newkey rsa:4096 -keyout certs/xxxtest.pem -out certs/xxxtest.pem -nodes -days 3650