[ardb:hctr2 3/8] crypto/hctr2.c:115:38: sparse: sparse: incorrect type in assignment (different base types)

From: kernel test robot <lkp@intel.com>
To: Nathan Huckleberry <nhuck@google.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
	Ard Biesheuvel <ardb@kernel.org>
Subject: [ardb:hctr2 3/8] crypto/hctr2.c:115:38: sparse: sparse: incorrect type in assignment (different base types)
Date: Wed, 9 Feb 2022 06:29:42 +0800	[thread overview]
Message-ID: <202202090607.wkQ2yto6-lkp@intel.com> (raw)

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git hctr2
head:   5bb01649223080b7cde5740f441eb5e758ec357f
commit: 09533ad0ea8fa56420aa6e866b11c0685e862bd1 [3/8] crypto: hctr2 - Add HCTR2 support
config: sparc64-randconfig-s032-20220208 (https://download.01.org/0day-ci/archive/20220209/202202090607.wkQ2yto6-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 11.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id=09533ad0ea8fa56420aa6e866b11c0685e862bd1
        git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git
        git fetch --no-tags ardb hctr2
        git checkout 09533ad0ea8fa56420aa6e866b11c0685e862bd1
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc64 SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
>> crypto/hctr2.c:115:38: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long long @@     got restricted __le64 [usertype] @@
   crypto/hctr2.c:115:38: sparse:     expected unsigned long long
   crypto/hctr2.c:115:38: sparse:     got restricted __le64 [usertype]
   crypto/hctr2.c:117:38: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long long @@     got restricted __le64 [usertype] @@
   crypto/hctr2.c:117:38: sparse:     expected unsigned long long
   crypto/hctr2.c:117:38: sparse:     got restricted __le64 [usertype]

vim +115 crypto/hctr2.c

   103	
   104	static int hctr2_hash_tweak(struct skcipher_request *req, u8 *iv)
   105	{
   106		u64 tweak_length_part[2];
   107		struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
   108		const struct hctr2_tfm_ctx *tctx = crypto_skcipher_ctx(tfm);
   109		struct hctr2_request_ctx *rctx = skcipher_request_ctx(req);
   110		struct shash_desc *hash_desc = &rctx->u.hash_desc;
   111		int err;
   112	
   113		memset(tweak_length_part, 0, sizeof(tweak_length_part));
   114		if (req->cryptlen % POLYVAL_BLOCK_SIZE == 0)
 > 115			tweak_length_part[0] = cpu_to_le64(TWEAK_SIZE * 8 * 2 + 2);
   116		else
   117			tweak_length_part[0] = cpu_to_le64(TWEAK_SIZE * 8 * 2 + 3);
   118	
   119		hash_desc->tfm = tctx->hash;
   120		err = crypto_shash_init(hash_desc);
   121		if (err)
   122			return err;
   123	
   124		err = crypto_shash_update(hash_desc, (u8 *)tweak_length_part, sizeof(tweak_length_part));
   125		if (err)
   126			return err;
   127		err = crypto_shash_update(hash_desc, iv, TWEAK_SIZE);
   128		return err;
   129	}
   130	

---
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