reproduce (this is a W=1 build):
        # https://github.com/norov/linux/commit/4ebcb9cdc941dc900a8ea9e08e8ad58799a8c5aa
        git remote add norov https://github.com/norov/linux
        git fetch --no-tags norov stack_magic
        git checkout 4ebcb9cdc941dc900a8ea9e08e8ad58799a8c5aa

        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=$HOME/0day COMPILER=gcc-11.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=nios2 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=nios2 prepare