linux-kernel - crypto/ahash.c:1073:1: warning: the frame size of 1040 bytes is larger than 1024 bytes

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Message-ID: <202512270438.YfZ22yXt-lkp@intel.com>
Date: Sat, 27 Dec 2025 05:01:28 +0800
From: kernel test robot <lkp@...el.com>
To: Herbert Xu <herbert@...dor.apana.org.au>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: crypto/ahash.c:1073:1: warning: the frame size of 1040 bytes
 is larger than 1024 bytes

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3f0e9c8cefa913dd9bd1d79b9a68896ea130f106
commit: 9d9b193ed73a65ec47cf1fd39925b09da8216461 crypto: hash - Increase HASH_MAX_DESCSIZE for hmac(sha3-224-s390)
date:   5 months ago
config: mips-lemote2f_defconfig (https://download.01.org/0day-ci/archive/20251227/202512270438.YfZ22yXt-lkp@intel.com/config)
compiler: mips64-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251227/202512270438.YfZ22yXt-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512270438.YfZ22yXt-lkp@intel.com/

All warnings (new ones prefixed by >>):

   crypto/ahash.c: In function 'crypto_hash_digest':
>> crypto/ahash.c:1073:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
    1073 | }
         | ^
--
   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 +1073 crypto/ahash.c

04bfa4c7d5119c Herbert Xu 2025-04-12  1059  
04bfa4c7d5119c Herbert Xu 2025-04-12  1060  int crypto_hash_digest(struct crypto_ahash *tfm, const u8 *data,
04bfa4c7d5119c Herbert Xu 2025-04-12  1061  		       unsigned int len, u8 *out)
04bfa4c7d5119c Herbert Xu 2025-04-12  1062  {
19da081a28c95f Herbert Xu 2025-04-23  1063  	HASH_REQUEST_ON_STACK(req, crypto_ahash_fb(tfm));
04bfa4c7d5119c Herbert Xu 2025-04-12  1064  	int err;
04bfa4c7d5119c Herbert Xu 2025-04-12  1065  
04bfa4c7d5119c Herbert Xu 2025-04-12  1066  	ahash_request_set_callback(req, 0, NULL, NULL);
04bfa4c7d5119c Herbert Xu 2025-04-12  1067  	ahash_request_set_virt(req, data, out, len);
04bfa4c7d5119c Herbert Xu 2025-04-12  1068  	err = crypto_ahash_digest(req);
04bfa4c7d5119c Herbert Xu 2025-04-12  1069  
04bfa4c7d5119c Herbert Xu 2025-04-12  1070  	ahash_request_zero(req);
04bfa4c7d5119c Herbert Xu 2025-04-12  1071  
04bfa4c7d5119c Herbert Xu 2025-04-12  1072  	return err;
04bfa4c7d5119c Herbert Xu 2025-04-12 @1073  }
04bfa4c7d5119c Herbert Xu 2025-04-12  1074  EXPORT_SYMBOL_GPL(crypto_hash_digest);
04bfa4c7d5119c Herbert Xu 2025-04-12  1075  

:::::: The code at line 1073 was first introduced by commit
:::::: 04bfa4c7d5119ca38f8133bfdae7957a60c8b221 crypto: hash - Add HASH_REQUEST_ON_STACK

:::::: TO: Herbert Xu <herbert@...dor.apana.org.au>
:::::: CC: Herbert Xu <herbert@...dor.apana.org.au>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki