reproduce (this is a W=1 build):
        git checkout dc59e4fea9d83f03bad6bddf3fa2e52491777482
        b4 shazam https://lore.kernel.org/r/20260707-mark-after-vmemmap-populate-v5-1-77d1ded3cae3@iscas.ac.cn

        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=$HOME/0day COMPILER=gcc-10.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv prepare