Hi James, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] [also build test WARNING on bpf/master linus/master v6.16 next-20250731] [cannot apply to bpf-next/net] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/James-Bottomley/bpf-make-bpf_key-an-opaque-type/20250731-013040 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20250730172745.8480-4-James.Bottomley%40HansenPartnership.com patch subject: [PATCH v2 3/3] bpf: eliminate the allocation of an intermediate struct bpf_key config: i386-randconfig-141-20250731 (https://download.01.org/0day-ci/archive/20250801/202508010803.nlVVIZ7G-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202508010803.nlVVIZ7G-lkp@xxxxxxxxx/ smatch warnings: kernel/trace/bpf_trace.c:1337 bpf_key_put() warn: always true condition '(key != BUILTIN_KEY) => (0-u32max != u64max)' vim +1337 kernel/trace/bpf_trace.c 1324 1325 /** 1326 * bpf_key_put - decrement key reference count if key is valid and free bpf_key 1327 * @bkey: bpf_key structure 1328 * 1329 * Decrement the reference count of the key inside *bkey*, if the pointer 1330 * is valid, and free *bkey*. 1331 */ 1332 __bpf_kfunc void bpf_key_put(struct bpf_key *bkey) 1333 { 1334 struct key *key = (struct key *)bkey; 1335 1336 if (system_keyring_id_check((unsigned long)key) < 0 && > 1337 (unsigned long)key != BUILTIN_KEY) 1338 key_put(key); 1339 } 1340 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
