Hi Waiman, First bad commit (maybe != root cause): tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: dd32d51934d00fd319caec8710bd1a438bd69859 commit: b91170be2b1f1ef673f5e79c7a4beb5673a8f881 [2953/2953] locking/lockdep: Avoid potential access of invalid memory in lock_class config: x86_64-randconfig-123-20250609 (https://download.01.org/0day-ci/archive/20250609/202506092002.S7MmpM4X-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/20250609/202506092002.S7MmpM4X-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/202506092002.S7MmpM4X-lkp@intel.com/ All warnings (new ones prefixed by >>):

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kernel/locking/lockdep.o: warning: objtool: lockdep_unregister_key()+0x2ff: unreachable instruction

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