reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/35a484f473611abf930868ed5f6c1d55bc741880
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review UPDATE-20261023-132215/NeilBrown/nfs-fix-open-blocking-with-d_fsdata/20261023-125011
        git checkout 35a484f473611abf930868ed5f6c1d55bc741880

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/