reproduce (this is a W=1 build):
        git checkout e6d2338b6f3e522872f3a14fcc5e5de2f58bf23b
        b4 shazam https://lore.kernel.org/r/20250918230857.127400-6-o-takashi@sakamocchi.jp
        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=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/firewire/