Hi Menglong, kernel test robot noticed the following build warnings:
[auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Menglong-Dong/add-function-metadata-support/20250226-202312 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20250226121537.752241-1-dongml2%40chinatelecom.cn patch subject: [PATCH bpf-next v2] add function metadata support config: x86_64-randconfig-r112-20250227 (https://download.01.org/0day-ci/archive/20250228/[email protected]/config) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250228/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ sparse warnings: (new ones prefixed by >>) kernel/trace/kfunc_md.c:12:23: sparse: sparse: symbol 'kfunc_mds' redeclared with different type (different address spaces): kernel/trace/kfunc_md.c:12:23: sparse: struct kfunc_md [noderef] __rcu *[addressable] [toplevel] kfunc_mds kernel/trace/kfunc_md.c: note: in included file: include/linux/kfunc_md.h:16:24: sparse: note: previously declared as: include/linux/kfunc_md.h:16:24: sparse: struct kfunc_md *extern [addressable] [toplevel] kfunc_mds >> kernel/trace/kfunc_md.c:186:20: sparse: sparse: incorrect type in assignment >> (different address spaces) @@ expected struct kfunc_md *md @@ got >> struct kfunc_md [noderef] __rcu * @@ kernel/trace/kfunc_md.c:186:20: sparse: expected struct kfunc_md *md kernel/trace/kfunc_md.c:186:20: sparse: got struct kfunc_md [noderef] __rcu * vim +186 kernel/trace/kfunc_md.c 169 170 /* Get a exist metadata by the function address, and NULL will be returned 171 * if not exist. 172 * 173 * NOTE: rcu lock should be held during reading the metadata, and 174 * kfunc_md_lock should be held if writing happens. 175 */ 176 struct kfunc_md *kfunc_md_find(void *ip) 177 { 178 struct kfunc_md *md; 179 u32 index; 180 181 if (kfunc_md_arch_exist(ip)) { 182 index = kfunc_md_get_index(ip); 183 if (WARN_ON_ONCE(index >= kfunc_md_count)) 184 return NULL; 185 > 186 md = &kfunc_mds[index]; 187 return md; 188 } 189 return NULL; 190 } 191 EXPORT_SYMBOL_GPL(kfunc_md_find); 192 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
