-1. install ubuntu 21.10\r
-2. apt-get install build-essential flex libncurses-dev linux-headers-generic linux-source libssl-dev ...... and so on\r
-3. cp /lib/modules/5.13.0-23-generic/build/Module.symvers ./\r
-4. /boot/config-5.13.0-23-generic as .config make oldconfig\r
+1. install ubuntu 22.04 5.15.0-25\r
+2. apt-get install build-essential flex libncurses-dev linux-headers-generic linux-source libssl-dev bison yacc vim libelf-dev ...... and so on\r
+3. cp /lib/modules/5.15.0-25-generic/build/Module.symvers ./\r
+4. /boot/config-5.15.0-25-generic as .config make oldconfig\r