reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/anna-maria/linux-devel.git/commit/?id=c774df411d1da02f75334976241deb88f8b9e256
        git remote add anna-maria-devel https://git.kernel.org/pub/scm/linux/kernel/git/anna-maria/linux-devel.git
        git fetch --no-tags anna-maria-devel timers/misc
        git checkout c774df411d1da02f75334976241deb88f8b9e256
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/