reproduce (this is a W=1 build):
        git checkout 76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c
        b4 shazam https://lore.kernel.org/r/20250915-ssqosid-v6-17-rc5-v2-3-2d4b0254dfd6@kernel.org
        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=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash kernel/sched/