reproduce (this is a W=1 build):
        git checkout d76bb1ebb5587f66b0f8b8099bfbb44722bc08b3
        b4 shazam https://lore.kernel.org/r/20250508183733.514124-3-csokas.bence@prolan.hu
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/mtd/