Hi Stefan, kernel test robot noticed the following build warnings: [auto build test WARNING on herbert-cryptodev-2.6/master] [also build test WARNING on herbert-crypto-2.6/master linus/master v6.8-rc3 next-20240209] [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/Stefan-Berger/crypto-ecdsa-Convert-byte-arrays-with-key-coordinates-to-digits/20240209-062415 base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master patch link: https://lore.kernel.org/r/20240208221840.3665874-2-stefanb%40linux.ibm.com patch subject: [PATCH 01/14] crypto: ecdsa - Convert byte arrays with key coordinates to digits config: x86_64-randconfig-101-20240209 (https://download.01.org/0day-ci/archive/20240210/202402100352.1TagPxg9-lkp@xxxxxxxxx/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240210/202402100352.1TagPxg9-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402100352.1TagPxg9-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> crypto/ecdsa.c:225:34: warning: variable 'nbytes' set but not used [-Wunused-but-set-variable] 225 | unsigned int digitlen, ndigits, nbytes; | ^ 1 warning generated. vim +/nbytes +225 crypto/ecdsa.c 216 217 /* 218 * Set the public key given the raw uncompressed key data from an X509 219 * certificate. The key data contain the concatenated X and Y coordinates of 220 * the public key. 221 */ 222 static int ecdsa_set_pub_key(struct crypto_akcipher *tfm, const void *key, unsigned int keylen) 223 { 224 struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); > 225 unsigned int digitlen, ndigits, nbytes; 226 const unsigned char *d = key; 227 int ret; 228 229 ret = ecdsa_ecc_ctx_reset(ctx); 230 if (ret < 0) 231 return ret; 232 233 if (keylen < 1 || (((keylen - 1) >> 1) % sizeof(u64)) != 0) 234 return -EINVAL; 235 /* we only accept uncompressed format indicated by '4' */ 236 if (d[0] != 4) 237 return -EINVAL; 238 239 keylen--; 240 digitlen = keylen >> 1; 241 242 ndigits = digitlen / sizeof(u64); 243 if (ndigits != ctx->curve->g.ndigits) 244 return -EINVAL; 245 246 nbytes = ndigits * sizeof(u64); 247 d++; 248 249 ecc_digits_from_array(d, digitlen, ctx->pub_key.x, ndigits); 250 ecc_digits_from_array(&d[digitlen], digitlen, ctx->pub_key.y, ndigits); 251 252 ret = ecc_is_pubkey_valid_full(ctx->curve, &ctx->pub_key); 253 254 ctx->pub_key_set = ret == 0; 255 256 return ret; 257 } 258 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
