reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/isilence/linux/commit/0655c3486db7c28d14f0dd70fe5c7904030d7407
        git remote add isilence https://github.com/isilence/linux
        git fetch --no-tags isilence zcrx/v8-crutched-refs+fallback
        git checkout 0655c3486db7c28d14f0dd70fe5c7904030d7407
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=loongarch olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash