tree: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master head: 98eca72fa04a9bbf28dba95efaec5aa95588fe23 commit: 64e26807bb93b4accaa395d98e118ab893cac074 [118/131] crypto: s390/aes - Use skcipher for fallback config: s390-allyesconfig (attached as .config) compiler: s390x-linux-gnu-gcc (Debian 5.3.1-8) 5.3.1 20160205 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 64e26807bb93b4accaa395d98e118ab893cac074 # save the attached .config to linux build tree make.cross ARCH=s390 All warnings (new ones prefixed by >>): arch/s390/crypto/aes_s390.c: In function 'fallback_blk_dec': >> arch/s390/crypto/aes_s390.c:271:1: warning: 'fallback_blk_dec' uses dynamic stack allocation } ^ arch/s390/crypto/aes_s390.c: In function 'ecb_aes_encrypt': >> arch/s390/crypto/aes_s390.c:355:1: warning: 'ecb_aes_encrypt' uses dynamic stack allocation } ^ arch/s390/crypto/aes_s390.c: In function 'cbc_aes_encrypt': >> arch/s390/crypto/aes_s390.c:496:1: warning: 'cbc_aes_encrypt' uses dynamic stack allocation } ^ arch/s390/crypto/aes_s390.c: In function 'xts_aes_decrypt': >> arch/s390/crypto/aes_s390.c:703:1: warning: 'xts_aes_decrypt' uses dynamic stack allocation } ^ arch/s390/crypto/aes_s390.c: In function 'xts_aes_encrypt': >> arch/s390/crypto/aes_s390.c:689:1: warning: 'xts_aes_encrypt' uses dynamic stack allocation } ^ vim +/fallback_blk_dec +271 arch/s390/crypto/aes_s390.c 64e26807 Herbert Xu 2016-06-29 265 skcipher_request_set_crypt(req, src, dst, nbytes, desc->info); b0c3e75d Sebastian Siewior 2007-12-01 266 64e26807 Herbert Xu 2016-06-29 267 ret = crypto_skcipher_decrypt(req); b0c3e75d Sebastian Siewior 2007-12-01 268 64e26807 Herbert Xu 2016-06-29 269 skcipher_request_zero(req); b0c3e75d Sebastian Siewior 2007-12-01 270 return ret; b0c3e75d Sebastian Siewior 2007-12-01 @271 } b0c3e75d Sebastian Siewior 2007-12-01 272 b0c3e75d Sebastian Siewior 2007-12-01 273 static int fallback_blk_enc(struct blkcipher_desc *desc, b0c3e75d Sebastian Siewior 2007-12-01 274 struct scatterlist *dst, struct scatterlist *src, b0c3e75d Sebastian Siewior 2007-12-01 275 unsigned int nbytes) b0c3e75d Sebastian Siewior 2007-12-01 276 { b0c3e75d Sebastian Siewior 2007-12-01 277 unsigned int ret; 64e26807 Herbert Xu 2016-06-29 278 struct crypto_blkcipher *tfm = desc->tfm; 64e26807 Herbert Xu 2016-06-29 279 struct s390_aes_ctx *sctx = crypto_blkcipher_ctx(tfm); 64e26807 Herbert Xu 2016-06-29 280 SKCIPHER_REQUEST_ON_STACK(req, sctx->fallback.blk); b0c3e75d Sebastian Siewior 2007-12-01 281 64e26807 Herbert Xu 2016-06-29 282 skcipher_request_set_tfm(req, sctx->fallback.blk); 64e26807 Herbert Xu 2016-06-29 283 skcipher_request_set_callback(req, desc->flags, NULL, NULL); 64e26807 Herbert Xu 2016-06-29 284 skcipher_request_set_crypt(req, src, dst, nbytes, desc->info); b0c3e75d Sebastian Siewior 2007-12-01 285 64e26807 Herbert Xu 2016-06-29 286 ret = crypto_skcipher_encrypt(req); b0c3e75d Sebastian Siewior 2007-12-01 287 return ret; b0c3e75d Sebastian Siewior 2007-12-01 288 } b0c3e75d Sebastian Siewior 2007-12-01 289 a9e62fad Herbert Xu 2006-08-21 290 static int ecb_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, a9e62fad Herbert Xu 2006-08-21 291 unsigned int key_len) a9e62fad Herbert Xu 2006-08-21 292 { a9e62fad Herbert Xu 2006-08-21 293 struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm); b0c3e75d Sebastian Siewior 2007-12-01 294 int ret; b0c3e75d Sebastian Siewior 2007-12-01 295 b0c3e75d Sebastian Siewior 2007-12-01 296 ret = need_fallback(key_len); b0c3e75d Sebastian Siewior 2007-12-01 297 if (ret > 0) { b0c3e75d Sebastian Siewior 2007-12-01 298 sctx->key_len = key_len; b0c3e75d Sebastian Siewior 2007-12-01 299 return setkey_fallback_blk(tfm, in_key, key_len); b0c3e75d Sebastian Siewior 2007-12-01 300 } a9e62fad Herbert Xu 2006-08-21 301 a9e62fad Herbert Xu 2006-08-21 302 switch (key_len) { a9e62fad Herbert Xu 2006-08-21 303 case 16: c7d4d259 Martin Schwidefsky 2016-03-17 304 sctx->enc = CPACF_KM_AES_128_ENC; c7d4d259 Martin Schwidefsky 2016-03-17 305 sctx->dec = CPACF_KM_AES_128_DEC; a9e62fad Herbert Xu 2006-08-21 306 break; a9e62fad Herbert Xu 2006-08-21 307 case 24: c7d4d259 Martin Schwidefsky 2016-03-17 308 sctx->enc = CPACF_KM_AES_192_ENC; c7d4d259 Martin Schwidefsky 2016-03-17 309 sctx->dec = CPACF_KM_AES_192_DEC; a9e62fad Herbert Xu 2006-08-21 310 break; a9e62fad Herbert Xu 2006-08-21 311 case 32: c7d4d259 Martin Schwidefsky 2016-03-17 312 sctx->enc = CPACF_KM_AES_256_ENC; c7d4d259 Martin Schwidefsky 2016-03-17 313 sctx->dec = CPACF_KM_AES_256_DEC; a9e62fad Herbert Xu 2006-08-21 314 break; a9e62fad Herbert Xu 2006-08-21 315 } a9e62fad Herbert Xu 2006-08-21 316 a9e62fad Herbert Xu 2006-08-21 317 return aes_set_key(tfm, in_key, key_len); a9e62fad Herbert Xu 2006-08-21 318 } a9e62fad Herbert Xu 2006-08-21 319 a9e62fad Herbert Xu 2006-08-21 320 static int ecb_aes_crypt(struct blkcipher_desc *desc, long func, void *param, a9e62fad Herbert Xu 2006-08-21 321 struct blkcipher_walk *walk) a9e62fad Herbert Xu 2006-08-21 322 { a9e62fad Herbert Xu 2006-08-21 323 int ret = blkcipher_walk_virt(desc, walk); a9e62fad Herbert Xu 2006-08-21 324 unsigned int nbytes; a9e62fad Herbert Xu 2006-08-21 325 a9e62fad Herbert Xu 2006-08-21 326 while ((nbytes = walk->nbytes)) { a9e62fad Herbert Xu 2006-08-21 327 /* only use complete blocks */ a9e62fad Herbert Xu 2006-08-21 328 unsigned int n = nbytes & ~(AES_BLOCK_SIZE - 1); a9e62fad Herbert Xu 2006-08-21 329 u8 *out = walk->dst.virt.addr; a9e62fad Herbert Xu 2006-08-21 330 u8 *in = walk->src.virt.addr; a9e62fad Herbert Xu 2006-08-21 331 c7d4d259 Martin Schwidefsky 2016-03-17 332 ret = cpacf_km(func, param, out, in, n); 36eb2caa Jan Glauber 2012-10-26 333 if (ret < 0 || ret != n) 36eb2caa Jan Glauber 2012-10-26 334 return -EIO; a9e62fad Herbert Xu 2006-08-21 335 a9e62fad Herbert Xu 2006-08-21 336 nbytes &= AES_BLOCK_SIZE - 1; a9e62fad Herbert Xu 2006-08-21 337 ret = blkcipher_walk_done(desc, walk, nbytes); a9e62fad Herbert Xu 2006-08-21 338 } a9e62fad Herbert Xu 2006-08-21 339 a9e62fad Herbert Xu 2006-08-21 340 return ret; a9e62fad Herbert Xu 2006-08-21 341 } a9e62fad Herbert Xu 2006-08-21 342 a9e62fad Herbert Xu 2006-08-21 343 static int ecb_aes_encrypt(struct blkcipher_desc *desc, a9e62fad Herbert Xu 2006-08-21 344 struct scatterlist *dst, struct scatterlist *src, a9e62fad Herbert Xu 2006-08-21 345 unsigned int nbytes) a9e62fad Herbert Xu 2006-08-21 346 { a9e62fad Herbert Xu 2006-08-21 347 struct s390_aes_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); a9e62fad Herbert Xu 2006-08-21 348 struct blkcipher_walk walk; a9e62fad Herbert Xu 2006-08-21 349 b0c3e75d Sebastian Siewior 2007-12-01 350 if (unlikely(need_fallback(sctx->key_len))) b0c3e75d Sebastian Siewior 2007-12-01 351 return fallback_blk_enc(desc, dst, src, nbytes); b0c3e75d Sebastian Siewior 2007-12-01 352 a9e62fad Herbert Xu 2006-08-21 353 blkcipher_walk_init(&walk, dst, src, nbytes); a9e62fad Herbert Xu 2006-08-21 354 return ecb_aes_crypt(desc, sctx->enc, sctx->key, &walk); a9e62fad Herbert Xu 2006-08-21 @355 } a9e62fad Herbert Xu 2006-08-21 356 a9e62fad Herbert Xu 2006-08-21 357 static int ecb_aes_decrypt(struct blkcipher_desc *desc, a9e62fad Herbert Xu 2006-08-21 358 struct scatterlist *dst, struct scatterlist *src, :::::: The code at line 271 was first introduced by commit :::::: b0c3e75d857f3785a4b274e26b1c0b2327580dda [CRYPTO] aes_s390: Add fallback driver :::::: TO: Sebastian Siewior <sebastian@xxxxxxxxxxxxx> :::::: CC: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
Attachment:
.config.gz
Description: Binary data
