reproduce:
        # https://github.com/intel-lab-lkp/linux/commit/f4157abfb15003887443e17542963d7b2c96cab6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Antony-Antony/xfrm-remove-redundant-assignments/20260512-083513
        git checkout f4157abfb15003887443e17542963d7b2c96cab6
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # pip install -r Documentation/sphinx/requirements.txt
        make htmldocs