reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/amir73il/linux/commit/9778e3603f15187bd80baff011a30190aa4d6d2a
        git remote add amir73il https://github.com/amir73il/linux
        git fetch --no-tags amir73il fan_pre_dir_access
        git checkout 9778e3603f15187bd80baff011a30190aa4d6d2a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash fs/ mm/