reproduce:
        git checkout 67807fbaf12719fca46a622d759484652b79c7c3
        b4 shazam https://lore.kernel.org/r/20260327223820.2244227-3-christoph.boehmwalder@linbit.com
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # pip install -r Documentation/sphinx/requirements.txt
        make htmldocs