reproduce (this is a W=1 build):
        git remote add tty https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
        git fetch tty tty-testing
        git checkout tty/tty-testing
        b4 shazam https://lore.kernel.org/r/20240129195321.229867-2-Frank.Li@nxp.com
        # 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