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Last active December 26, 2023 21:55
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Build a custom Kernel for WSL2 for module load
Raw
.wslconfig
[wsl2]
kernel=C:\\Users\\WIN10_USER\\bzimage
Raw
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
Raw
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
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