reproduce (this is a W=1 build):
        git checkout 3daa4f5dc6cc1ac1ab2f95b5b4c16bc5fb87f48f
        b4 shazam https://lore.kernel.org/r/20260309-hsr_ptp-v2-1-798262aad3a4@linutronix.de

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash net/dsa/