reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/f623b4f534cb38851b67bbc263fe66a60725a524
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yaxiong-Tian/PM-devfreq-Fix-possible-null-pointer-issue-in-devfreq_add_governor/20260403-043102
        git checkout f623b4f534cb38851b67bbc263fe66a60725a524

        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/devfreq/