crypto/hmac.c:301:1: warning: the frame size of 1040 bytes is larger than 1024 bytes
From: kernel test robot
Date: Tue Jun 09 2026 - 22:18:18 EST
Hi Herbert,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: acb7500801e98639f6d8c2d796ed9f64cba83d3a
commit: 9d9b193ed73a65ec47cf1fd39925b09da8216461 crypto: hash - Increase HASH_MAX_DESCSIZE for hmac(sha3-224-s390)
date: 10 months ago
config: mips-lemote2f_defconfig (https://download.01.org/0day-ci/archive/20260610/202606101048.ma5faTxi-lkp@xxxxxxxxx/config)
compiler: mips64-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260610/202606101048.ma5faTxi-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
| Fixes: 9d9b193ed73a ("crypto: hash - Increase HASH_MAX_DESCSIZE for hmac(sha3-224-s390)")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606101048.ma5faTxi-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
crypto/hmac.c: In function 'hmac_setkey_ahash':
>> crypto/hmac.c:301:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
301 | }
| ^
vim +301 crypto/hmac.c
0796ae061e6da5 Herbert Xu 2006-08-21 250
c3103416d52176 Herbert Xu 2025-05-15 251 static int hmac_setkey_ahash(struct crypto_ahash *parent,
c3103416d52176 Herbert Xu 2025-05-15 252 const u8 *inkey, unsigned int keylen)
c3103416d52176 Herbert Xu 2025-05-15 253 {
c3103416d52176 Herbert Xu 2025-05-15 254 struct ahash_hmac_ctx *tctx = crypto_ahash_ctx(parent);
c3103416d52176 Herbert Xu 2025-05-15 255 struct crypto_ahash *fb = crypto_ahash_fb(tctx->hash);
c3103416d52176 Herbert Xu 2025-05-15 256 int ds = crypto_ahash_digestsize(parent);
c3103416d52176 Herbert Xu 2025-05-15 257 int bs = crypto_ahash_blocksize(parent);
c3103416d52176 Herbert Xu 2025-05-15 258 int ss = crypto_ahash_statesize(parent);
c3103416d52176 Herbert Xu 2025-05-15 259 HASH_REQUEST_ON_STACK(req, fb);
c3103416d52176 Herbert Xu 2025-05-15 260 u8 *opad = &tctx->pads[ss];
c3103416d52176 Herbert Xu 2025-05-15 261 u8 *ipad = &tctx->pads[0];
c3103416d52176 Herbert Xu 2025-05-15 262 int err, i;
c3103416d52176 Herbert Xu 2025-05-15 263
c3103416d52176 Herbert Xu 2025-05-15 264 if (fips_enabled && (keylen < 112 / 8))
c3103416d52176 Herbert Xu 2025-05-15 265 return -EINVAL;
c3103416d52176 Herbert Xu 2025-05-15 266
c3103416d52176 Herbert Xu 2025-05-15 267 ahash_request_set_callback(req, 0, NULL, NULL);
c3103416d52176 Herbert Xu 2025-05-15 268
c3103416d52176 Herbert Xu 2025-05-15 269 if (keylen > bs) {
c3103416d52176 Herbert Xu 2025-05-15 270 ahash_request_set_virt(req, inkey, ipad, keylen);
c3103416d52176 Herbert Xu 2025-05-15 271 err = crypto_ahash_digest(req);
c3103416d52176 Herbert Xu 2025-05-15 272 if (err)
c3103416d52176 Herbert Xu 2025-05-15 273 goto out_zero_req;
c3103416d52176 Herbert Xu 2025-05-15 274
c3103416d52176 Herbert Xu 2025-05-15 275 keylen = ds;
c3103416d52176 Herbert Xu 2025-05-15 276 } else
c3103416d52176 Herbert Xu 2025-05-15 277 memcpy(ipad, inkey, keylen);
c3103416d52176 Herbert Xu 2025-05-15 278
c3103416d52176 Herbert Xu 2025-05-15 279 memset(ipad + keylen, 0, bs - keylen);
c3103416d52176 Herbert Xu 2025-05-15 280 memcpy(opad, ipad, bs);
c3103416d52176 Herbert Xu 2025-05-15 281
c3103416d52176 Herbert Xu 2025-05-15 282 for (i = 0; i < bs; i++) {
c3103416d52176 Herbert Xu 2025-05-15 283 ipad[i] ^= HMAC_IPAD_VALUE;
c3103416d52176 Herbert Xu 2025-05-15 284 opad[i] ^= HMAC_OPAD_VALUE;
c3103416d52176 Herbert Xu 2025-05-15 285 }
c3103416d52176 Herbert Xu 2025-05-15 286
c3103416d52176 Herbert Xu 2025-05-15 287 ahash_request_set_virt(req, ipad, NULL, bs);
c3103416d52176 Herbert Xu 2025-05-15 288 err = crypto_ahash_init(req) ?:
c3103416d52176 Herbert Xu 2025-05-15 289 crypto_ahash_update(req) ?:
c3103416d52176 Herbert Xu 2025-05-15 290 crypto_ahash_export(req, ipad);
c3103416d52176 Herbert Xu 2025-05-15 291
c3103416d52176 Herbert Xu 2025-05-15 292 ahash_request_set_virt(req, opad, NULL, bs);
c3103416d52176 Herbert Xu 2025-05-15 293 err = err ?:
c3103416d52176 Herbert Xu 2025-05-15 294 crypto_ahash_init(req) ?:
c3103416d52176 Herbert Xu 2025-05-15 295 crypto_ahash_update(req) ?:
c3103416d52176 Herbert Xu 2025-05-15 296 crypto_ahash_export(req, opad);
c3103416d52176 Herbert Xu 2025-05-15 297
c3103416d52176 Herbert Xu 2025-05-15 298 out_zero_req:
c3103416d52176 Herbert Xu 2025-05-15 299 HASH_REQUEST_ZERO(req);
c3103416d52176 Herbert Xu 2025-05-15 300 return err;
c3103416d52176 Herbert Xu 2025-05-15 @301 }
c3103416d52176 Herbert Xu 2025-05-15 302
:::::: The code at line 301 was first introduced by commit
:::::: c3103416d5217655d707d9417aaf66f184e3d72f crypto: hmac - Add ahash support
:::::: TO: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
:::::: CC: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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