reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/4ff550cf67a169b910b5254a6a5e5aab15acca2e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Krzysztof-Karas/drm-i915-selftests-Keep-mock-file-open-during-unfaultable-migrate-with-fill/20251204-171341
        git checkout 4ff550cf67a169b910b5254a6a5e5aab15acca2e

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/