[herbert-cryptodev-2.6:master 76/81] crypto/asymmetric_keys/x509_public_key.c:70: undefined reference to `sm2_compute_z_digest'

[kernel test robot <lkp@xxxxxxxxx>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
head:   b335f258e8ddafec0e8ae2201ca78d29ed8f85eb
commit: e5221fa6a355112ddcc29dc82a94f7c3a1aacc0b [76/81] KEYS: asymmetric: Move sm2 code into x509_public_key
config: nios2-randconfig-r031-20230622 (https://download.01.org/0day-ci/archive/20230623/202306231917.utO12sx8-lkp@xxxxxxxxx/config)
compiler: nios2-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230623/202306231917.utO12sx8-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
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306231917.utO12sx8-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   nios2-linux-ld: crypto/asymmetric_keys/x509_public_key.o: in function `x509_get_sig_params':
>> crypto/asymmetric_keys/x509_public_key.c:70: undefined reference to `sm2_compute_z_digest'
   crypto/asymmetric_keys/x509_public_key.c:70:(.text+0x34c): relocation truncated to fit: R_NIOS2_CALL26 against `sm2_compute_z_digest'


vim +70 crypto/asymmetric_keys/x509_public_key.c

    20	
    21	/*
    22	 * Set up the signature parameters in an X.509 certificate.  This involves
    23	 * digesting the signed data and extracting the signature.
    24	 */
    25	int x509_get_sig_params(struct x509_certificate *cert)
    26	{
    27		struct public_key_signature *sig = cert->sig;
    28		struct crypto_shash *tfm;
    29		struct shash_desc *desc;
    30		size_t desc_size;
    31		int ret;
    32	
    33		pr_devel("==>%s()\n", __func__);
    34	
    35		sig->s = kmemdup(cert->raw_sig, cert->raw_sig_size, GFP_KERNEL);
    36		if (!sig->s)
    37			return -ENOMEM;
    38	
    39		sig->s_size = cert->raw_sig_size;
    40	
    41		/* Allocate the hashing algorithm we're going to need and find out how
    42		 * big the hash operational data will be.
    43		 */
    44		tfm = crypto_alloc_shash(sig->hash_algo, 0, 0);
    45		if (IS_ERR(tfm)) {
    46			if (PTR_ERR(tfm) == -ENOENT) {
    47				cert->unsupported_sig = true;
    48				return 0;
    49			}
    50			return PTR_ERR(tfm);
    51		}
    52	
    53		desc_size = crypto_shash_descsize(tfm) + sizeof(*desc);
    54		sig->digest_size = crypto_shash_digestsize(tfm);
    55	
    56		ret = -ENOMEM;
    57		sig->digest = kmalloc(sig->digest_size, GFP_KERNEL);
    58		if (!sig->digest)
    59			goto error;
    60	
    61		desc = kzalloc(desc_size, GFP_KERNEL);
    62		if (!desc)
    63			goto error;
    64	
    65		desc->tfm = tfm;
    66	
    67		if (strcmp(cert->pub->pkey_algo, "sm2") == 0) {
    68			ret = strcmp(sig->hash_algo, "sm3") != 0 ? -EINVAL :
    69			      crypto_shash_init(desc) ?:
  > 70			      sm2_compute_z_digest(desc, cert->pub->key,
    71						   cert->pub->keylen, sig->digest) ?:
    72			      crypto_shash_init(desc) ?:
    73			      crypto_shash_update(desc, sig->digest,
    74						  sig->digest_size) ?:
    75			      crypto_shash_finup(desc, cert->tbs, cert->tbs_size,
    76						 sig->digest);
    77		} else {
    78			ret = crypto_shash_digest(desc, cert->tbs, cert->tbs_size,
    79						  sig->digest);
    80		}
    81	
    82		if (ret < 0)
    83			goto error_2;
    84	
    85		ret = is_hash_blacklisted(sig->digest, sig->digest_size,
    86					  BLACKLIST_HASH_X509_TBS);
    87		if (ret == -EKEYREJECTED) {
    88			pr_err("Cert %*phN is blacklisted\n",
    89			       sig->digest_size, sig->digest);
    90			cert->blacklisted = true;
    91			ret = 0;
    92		}
    93	
    94	error_2:
    95		kfree(desc);
    96	error:
    97		crypto_free_shash(tfm);
    98		pr_devel("<==%s() = %d\n", __func__, ret);
    99		return ret;
   100	}
   101	

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