reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs.git/commit/?id=a9769422dcfc76cf0834755d75b2535ff95948dd
        git remote add linkinjeon-ntfs https://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs.git
        git fetch --no-tags linkinjeon-ntfs ntfs-next
        git checkout a9769422dcfc76cf0834755d75b2535ff95948dd

        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=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash fs/ntfs/