reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/d8311a93fd7c77f1a64787baaa1bd0e431a0f717
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Petr-Pavlu/umh-treewide-Explicitly-include-linux-umh-h-where-needed/20260708-234758
        git checkout d8311a93fd7c77f1a64787baaa1bd0e431a0f717

        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=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/time/ mm/