reproduce (this is a W=1 build):
        git checkout next-20260311
        b4 shazam https://lore.kernel.org/r/56372fe273f775b26675a04652c1229e14680741.1773346620.git.ljs@kernel.org

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash mm/ net/sunrpc/xprtrdma/