Hi Kemeng, kernel test robot noticed the following build errors: [auto build test ERROR on tytso-ext4/dev] [also build test ERROR on linus/master v6.9-rc1 next-20240328] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Kemeng-Shi/ext4-keep-prefetch_grp-and-nr-consistent/20240326-214754 base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev patch link: https://lore.kernel.org/r/20240326213823.528302-3-shikemeng%40huaweicloud.com patch subject: [PATCH 2/5] ext4: add test_mb_mark_used_cost to estimate cost of mb_mark_used config: x86_64-randconfig-072-20240329 (https://download.01.org/0day-ci/archive/20240329/202403291544.lxme27eF-lkp@xxxxxxxxx/config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240329/202403291544.lxme27eF-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202403291544.lxme27eF-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from include/kunit/static_stub.h:18:0, from fs/ext4/mballoc.c:21: >> fs/ext4/mballoc-test.c:959:10: error: initializer element is not constant slow_attr), ^ include/kunit/test.h:218:13: note: in definition of macro 'KUNIT_CASE_PARAM_ATTR' .attr = attributes, .module_name = KBUILD_MODNAME} ^~~~~~~~~~ fs/ext4/mballoc-test.c:959:10: note: (near initialization for 'mbt_test_cases[6].attr') slow_attr), ^ include/kunit/test.h:218:13: note: in definition of macro 'KUNIT_CASE_PARAM_ATTR' .attr = attributes, .module_name = KBUILD_MODNAME} ^~~~~~~~~~ vim +959 fs/ext4/mballoc-test.c 950 951 static struct kunit_case mbt_test_cases[] = { 952 KUNIT_CASE_PARAM(test_new_blocks_simple, mbt_layouts_gen_params), 953 KUNIT_CASE_PARAM(test_free_blocks_simple, mbt_layouts_gen_params), 954 KUNIT_CASE_PARAM(test_mb_generate_buddy, mbt_layouts_gen_params), 955 KUNIT_CASE_PARAM(test_mb_mark_used, mbt_layouts_gen_params), 956 KUNIT_CASE_PARAM(test_mb_free_blocks, mbt_layouts_gen_params), 957 KUNIT_CASE_PARAM(test_mark_diskspace_used, mbt_layouts_gen_params), 958 KUNIT_CASE_PARAM_ATTR(test_mb_mark_used_cost, mbt_layouts_gen_params, > 959 slow_attr), 960 {} 961 }; 962 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki