reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/zen-kernel/zen-kernel/commit/39c0b57c90b5e9281dff6c35bd32d9695f328b17
        git remote add zen https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen 6.12/invlpgb
        git checkout 39c0b57c90b5e9281dff6c35bd32d9695f328b17
        # save the config file
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-19 ~/lkp-tests/kbuild/make.cross W=1 ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-19 ~/lkp-tests/kbuild/make.cross W=1 ARCH=i386