reproduce (this is a W=1 build):
        git checkout 734bef548a96e8774d6eef5dfa2026c6edc4e80b
        b4 shazam https://lore.kernel.org/r/20261029-flowtable-sw-accel-ip6ip-sit-v1-5-6a17c54f9fb7@oss.qualcomm.com

        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=$HOME/0day COMPILER=gcc-16.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-16.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash net/netfilter/