Hi Zhao, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 5ae76523ccf96ec8b8d73d541e305bf15b6b697e commit: 6636f4434a9c5c9c645694db206188ee5a6626dd [1592/1592] ext4: report error to userspace by netlink config: x86_64-buildonly-randconfig-002-20250424 (https://download.01.org/0day-ci/archive/20250529/202505290015.YgAGQH9n-lkp@i...) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250529/202505290015.YgAGQH9n-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202505290015.YgAGQH9n-lkp@intel.com/ All errors (new ones prefixed by >>):

...

ld.lld: error: undefined symbol: init_net

...

referenced by super.c fs/ext4/super.o:(ext4_init_fs) in archive built-in.a

-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki