reproduce (this is a W=1 build):
        git remote add bluetooth-next https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git
        git fetch bluetooth-next master
        git checkout bluetooth-next/master
        b4 shazam https://lore.kernel.org/r/20241008154005.595169-2-luiz.dentz@gmail.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 net/bluetooth/