linux-kernel - drivers/crypto/sa2ul.c:432:1: warning: the frame size of 1076 bytes is larger than 1024 bytes

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Message-ID: <202008161440.gqdm1lpp%lkp@intel.com>
Date:   Sun, 16 Aug 2020 14:56:43 +0800
From:   kernel test robot <lkp@...el.com>
To:     Keerthy <j-keerthy@...com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Tero Kristo <t-kristo@...com>
Subject: drivers/crypto/sa2ul.c:432:1: warning: the frame size of 1076 bytes
 is larger than 1024 bytes

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4b6c093e21d36bede0fd88fd0aeb3b03647260e4
commit: d2c8ac187fc922e73930a1b2f6a211e27f595d01 crypto: sa2ul - Add AEAD algorithm support
date:   3 weeks ago
config: arc-randconfig-r023-20200816 (attached as .config)
compiler: arc-elf-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout d2c8ac187fc922e73930a1b2f6a211e27f595d01
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from include/linux/device.h:15,
                    from include/linux/dmaengine.h:8,
                    from drivers/crypto/sa2ul.c:12:
   drivers/crypto/sa2ul.c: In function 'sa_sha_init':
   drivers/crypto/sa2ul.c:1486:33: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1486 |   crypto_ahash_digestsize(tfm), (u64)rctx);
         |                                 ^
   include/linux/dev_printk.h:123:47: note: in definition of macro 'dev_dbg'
     123 |   dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
         |                                               ^~~~~~~~~~~
   drivers/crypto/sa2ul.c: In function 'sa_prepare_iopads':
>> drivers/crypto/sa2ul.c:432:1: warning: the frame size of 1076 bytes is larger than 1024 bytes [-Wframe-larger-than=]
     432 | }
         | ^

vim +432 drivers/crypto/sa2ul.c

   407	
   408	static void sa_prepare_iopads(struct algo_data *data, const u8 *key,
   409				      u16 key_sz, __be32 *ipad, __be32 *opad)
   410	{
   411		SHASH_DESC_ON_STACK(shash, data->ctx->shash);
   412		int block_size = crypto_shash_blocksize(data->ctx->shash);
   413		int digest_size = crypto_shash_digestsize(data->ctx->shash);
   414		u8 k_ipad[SHA1_BLOCK_SIZE];
   415		u8 k_opad[SHA1_BLOCK_SIZE];
   416	
   417		shash->tfm = data->ctx->shash;
   418	
   419		prepare_kiopad(k_ipad, k_opad, key, key_sz);
   420	
   421		memzero_explicit(ipad, block_size);
   422		memzero_explicit(opad, block_size);
   423	
   424		crypto_shash_init(shash);
   425		crypto_shash_update(shash, k_ipad, block_size);
   426		sa_export_shash(shash, block_size, digest_size, ipad);
   427	
   428		crypto_shash_init(shash);
   429		crypto_shash_update(shash, k_opad, block_size);
   430	
   431		sa_export_shash(shash, block_size, digest_size, opad);
 > 432	}
   433	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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