[ardb:hctr2 3/8] crypto/hctr2.c:151 hctr2_hash_message() error: uninitialized symbol 'err'.

[ardb:hctr2 3/8] crypto/hctr2.c:151 hctr2_hash_message() error: uninitialized symbol 'err'.

[kernel test robot]

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Nathan Huckleberry <nhuck@google.com>
CC: Ard Biesheuvel <ardb@kernel.org>

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
:::::: branch date: 12 hours ago
:::::: commit date: 2 days ago
config: openrisc-randconfig-m031-20220208 (https://download.01.org/0day-ci/archive/20220209/202202090709.CprWuydG-lkp(a)intel.com/config)
compiler: or1k-linux-gcc (GCC) 11.2.0

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

smatch warnings:
crypto/hctr2.c:151 hctr2_hash_message() error: uninitialized symbol 'err'.

vim +/err +151 crypto/hctr2.c

09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  130  
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  131  static int hctr2_hash_message(struct skcipher_request *req,
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  132  			      struct scatterlist *sgl,
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  133  			      u8 digest[POLYVAL_DIGEST_SIZE])
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  134  {
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  135  	u8 padding[BLOCKCIPHER_BLOCK_SIZE];
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  136  	struct hctr2_request_ctx *rctx = skcipher_request_ctx(req);
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  137  	struct shash_desc *hash_desc = &rctx->u.hash_desc;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  138  	const unsigned int bulk_len = req->cryptlen - BLOCKCIPHER_BLOCK_SIZE;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  139  	struct sg_mapping_iter miter;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  140  	unsigned int remainder = bulk_len % BLOCKCIPHER_BLOCK_SIZE;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  141  	int err;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  142  
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  143  	sg_miter_start(&miter, sgl, sg_nents(sgl),
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  144  		       SG_MITER_FROM_SG | SG_MITER_ATOMIC);
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  145  	while (sg_miter_next(&miter)) {
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  146  		err = crypto_shash_update(hash_desc, miter.addr, miter.length);
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  147  		if (err)
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  148  			break;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  149  	}
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  150  	sg_miter_stop(&miter);
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24 @151  	if (err)
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  152  		return err;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  153  
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  154  	if (remainder) {
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  155  		memset(padding, 0, BLOCKCIPHER_BLOCK_SIZE);
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  156  		padding[0] = 0x01;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  157  		err = crypto_shash_update(hash_desc, padding, BLOCKCIPHER_BLOCK_SIZE - remainder);
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  158  		if (err)
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  159  			return err;
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  160  	}
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  161  	return crypto_shash_final(hash_desc, digest);
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  162  }
09533ad0ea8fa5 Nathan Huckleberry 2022-01-24  163  

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