Hi Dan, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 5b56c883c34a890a3f9ca7baa8aea426538c88a8 commit: 9bb67bd58e6a7e3ef00793b4966be7bb0a346830 [1531/1531] Intel: device-dax: Add support for a dax override driver config: x86_64-buildonly-randconfig-005-20250329 (https://download.01.org/0day-ci/archive/20250330/202503301315.o2E2dF19-lkp@i...) compiler: clang version 20.1.1 (https://github.com/llvm/llvm-project 424c2d9b7e4de40d0804dd374721e6411c27d1d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250330/202503301315.o2E2dF19-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/202503301315.o2E2dF19-lkp@intel.com/ All warnings (new ones prefixed by >>):

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drivers/dax/bus.o: warning: objtool: __dax_driver_register()+0xd5: unreachable instruction

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