Build (5.15.57.1) #13
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| name: Build WSL2 Kernel | |
| run-name: Build (${{ github.event.inputs.kernel_version }}) | |
| on: | |
| workflow_dispatch: | |
| inputs: | |
| kernel_version: | |
| description: "WSL2 kernel version (e.g. 5.15.90.4)" | |
| required: true | |
| default: "5.15.90.4" | |
| jobs: | |
| build-and-release: | |
| runs-on: ubuntu-latest | |
| env: | |
| KERNEL_VERSION: ${{ github.event.inputs.kernel_version }} | |
| KERNEL_DIR: linux-${{ github.event.inputs.kernel_version }} | |
| RELEASE_TAG: v${{ github.event.inputs.kernel_version }} | |
| steps: | |
| - name: Checkout Repository | |
| uses: actions/checkout@v4 | |
| - name: Install Dependencies | |
| run: | | |
| sudo apt-get update | |
| sudo apt-get install -y \ | |
| build-essential flex bison dwarves \ | |
| libssl-dev libelf-dev libncurses-dev \ | |
| bc rsync cpio python3 \ | |
| pahole | |
| - name: Download Kernel Source | |
| run: | | |
| mkdir -p kernel-build | |
| cd kernel-build | |
| wget https://github.com/microsoft/WSL2-Linux-Kernel/archive/refs/tags/linux-msft-wsl-${{ env.KERNEL_VERSION }}.tar.gz | |
| tar -xzf linux-msft-wsl-${{ env.KERNEL_VERSION }}.tar.gz | |
| mv WSL2-Linux-Kernel-linux-msft-wsl-${{ env.KERNEL_VERSION }} linux-${{ env.KERNEL_VERSION }} | |
| echo "KERNEL_DIR=$(pwd)/linux-${{ env.KERNEL_VERSION }}" >> $GITHUB_ENV | |
| - name: Configure Kernel | |
| run: | | |
| cd ${{ env.KERNEL_DIR }} | |
| cp Microsoft/config-wsl .config | |
| ./scripts/config --disable DEBUG_INFO_BTF | |
| ./scripts/config --enable LD_NO_EXEC_STACK | |
| ./scripts/config --enable INIT_STACK_NONE | |
| make olddefconfig | |
| - name: Build Kernel | |
| run: | | |
| cd ${{ env.KERNEL_DIR }} | |
| make -j$(nproc) \ | |
| LDFLAGS="-z noexecstack -z separate-code" \ | |
| LD=ld.bfd | |
| if [ ! -f arch/x86/boot/bzImage ]; then | |
| echo "::error::Kernel build failed!" | |
| exit 1 | |
| fi | |
| - name: Verify Kernel Image | |
| run: | | |
| file ${{ env.KERNEL_DIR }}/arch/x86/boot/bzImage | |
| ls -lh ${{ env.KERNEL_DIR }}/arch/x86/boot/bzImage | |
| - name: Create Release | |
| id: create_release | |
| uses: actions/create-release@v1 | |
| env: | |
| GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| with: | |
| tag_name: ${{ env.RELEASE_TAG }} | |
| release_name: "WSL2 Kernel ${{ env.KERNEL_VERSION }}" | |
| body: | | |
| ### Build Information | |
| - Version: ${{ env.KERNEL_VERSION }} | |
| - Build Date: $(date -u +'%Y-%m-%d %H:%M:%S') | |
| - Build Flags: LDFLAGS="-z noexecstack -z separate-code" | |
| ### Important Notes | |
| This build DISABLED BTF to avoid linker errors. | |
| Warnings about executable stack are suppressed but functionally safe. | |
| ### Installation | |
| 1. Download `bzImage` | |
| 2. Place in `C:\Windows\System32\lxss\tools` | |
| 3. Add to `.wslconfig`: | |
| ```ini | |
| [wsl2] | |
| kernel=C:\\Windows\\System32\\lxss\\tools\\bzImage | |
| ``` | |
| draft: false | |
| prerelease: false | |
| - name: Upload Kernel Image | |
| uses: actions/upload-release-asset@v1 | |
| env: | |
| GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| with: | |
| upload_url: ${{ steps.create_release.outputs.upload_url }} | |
| asset_path: ${{ env.KERNEL_DIR }}/arch/x86/boot/bzImage | |
| asset_name: bzImage-${{ env.KERNEL_VERSION }} | |
| asset_content_type: application/octet-stream | |
| - name: Upload Kernel Config | |
| uses: actions/upload-release-asset@v1 | |
| with: | |
| upload_url: ${{ steps.create_release.outputs.upload_url }} | |
| asset_path: ${{ env.KERNEL_DIR }}/.config | |
| asset_name: config-${{ env.KERNEL_VERSION }}.txt | |
| asset_content_type: text/plain |