reproduce (this is a W=1 build):
        git checkout next-20250915
        b4 shazam https://lore.kernel.org/r/20250916082611.2972008-9-ruanjinjie@huawei.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/entry/