Build a custom Kernel for WSL2 for module load

.wslconfig

[wsl2]
kernel=C:\\Users\\WIN10_USER\\bzimage

0-install-wsl2-kernel.md

Source: https://unix.stackexchange.com/questions/594470/wsl-2-does-not-have-lib-modules

On WSL2

sudo apt install build-essential flex bison libssl-dev libelf-dev dwarves
git clone https://github.com/microsoft/WSL2-Linux-Kernel.git
cd WSL2-Linux-Kernel
cp Microsoft/config-wsl .config
make -j $(expr $(nproc) - 1)

On Windows

• Copy \\wsl$\<DISTRO>\home\<USER>\WSL2-Linux-Kernel\arch\x86\boot\bzimage to %userprofile%
• Put on %userprofile% the .wslconfig file (or add the kernel config on an existing one)
• Shutdown WSL with wsl --shutdown
• Reopen WSL2 Flavor

Back on WSL2

• Copy the Makefile on home folder
• run make on home

Makefile

obj-m:=lkm_example.o

all:
    make -C $(shell pwd)/WSL2-Linux-Kernel M=$(shell pwd) modules

clean:
    make -C $(shell pwd)/WSL2-Linux-Kernel M=$(shell pwd) clean