reproduce (this is a W=1 build):
        git checkout 63fbf275fa9f18f7020fb8acf54fa107e51d0f23
        b4 shazam https://lore.kernel.org/r/20260213224038.549798-2-dave.jiang@intel.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 drivers/cxl/ kernel/bpf/