reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/avpatel/linux/commit/48a98b4fd16db3e47ba4de51cdc1ccf7965ee074
        git remote add avpatel https://github.com/avpatel/linux.git
        git fetch --no-tags avpatel riscv_unaligned_test_skip_v1
        git checkout 48a98b4fd16db3e47ba4de51cdc1ccf7965ee074
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash