Hi Yu,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 053a6b6f8e4c86200cdb20bc80c063c3bb119859 commit: d2cdad29e00e63ab3a32f5f0d90acc757ff5653a [2589/2589] nbd: fold nbd config initialization into nbd_alloc_config() config: x86_64-buildonly-randconfig-002-20241218 (https://download.01.org/0day-ci/archive/20241228/202412281725.LnOuPqEI-lkp@i...) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241228/202412281725.LnOuPqEI-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/202412281725.LnOuPqEI-lkp@intel.com/

All warnings (new ones prefixed by >>):

...

drivers/block/nbd.o: warning: objtool: nbd_alloc_and_init_config()+0x35: unreachable instruction