reproduce (this is a W=1 build):
        git checkout 8d61431ed2607386b427752505379536eb634ce8
        b4 shazam https://lore.kernel.org/r/988dddb203416668a10bc9c5e6157a78615d2ed2.1790025465.git.abhishekbapat@google.com

        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=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=xtensa olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=xtensa SHELL=/bin/bash