> -----Original Message-----
> From: Gowrishankar Muthukrishnan <gmuthukrishn@marvell.com>
> Sent: Friday, November 3, 2023 3:15 PM
> To: dev@dpdk.org
> Cc: anoobj@marvell.com; Akhil Goyal <gakhil@marvell.com>; Ji, Kai
> <kai.ji@intel.com>; Power, Ciara <ciara.power@intel.com>; Gowrishankar
> Muthukrishnan <gmuthukrishn@marvell.com>
> Subject: [PATCH v3] crypto/openssl: fix memory leaks in asym ops
>
> Fix memory leaks in Asymmetric ops, as reported by valgrind.
>
> Signed-off-by: Gowrishankar Muthukrishnan <gmuthukrishn@marvell.com>
> ---
> v3:
> - changes as suggested in v2.
> ---
> drivers/crypto/openssl/rte_openssl_pmd.c | 30 +++++++++++++-------
> drivers/crypto/openssl/rte_openssl_pmd_ops.c | 16 +++++++----
> 2 files changed, 30 insertions(+), 16 deletions(-)
Acked-by: Ciara Power <ciara.power@intel.com>
@@ -1897,6 +1897,7 @@ process_openssl_dsa_sign_op_evp(struct rte_crypto_op *cop,
size_t outlen;
unsigned char *dsa_sign_data;
const unsigned char *dsa_sign_data_p;
+ int ret = -1;
cop->status = RTE_CRYPTO_OP_STATUS_ERROR;
params = OSSL_PARAM_BLD_to_param(param_bld);
@@ -1950,9 +1951,9 @@ process_openssl_dsa_sign_op_evp(struct rte_crypto_op *cop,
cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
}
+ ret = 0;
DSA_SIG_free(sign);
OPENSSL_free(dsa_sign_data);
- return 0;
err_dsa_sign:
if (params)
@@ -1961,7 +1962,9 @@ process_openssl_dsa_sign_op_evp(struct rte_crypto_op *cop,
EVP_PKEY_CTX_free(key_ctx);
if (dsa_ctx)
EVP_PKEY_CTX_free(dsa_ctx);
- return -1;
+
+ EVP_PKEY_free(pkey);
+ return ret;
}
/* process dsa verify operation */
@@ -2034,6 +2037,7 @@ process_openssl_dsa_verify_op_evp(struct rte_crypto_op *cop,
ret = 0;
}
+ OPENSSL_free(dsa_sig);
err_dsa_verify:
if (sign)
DSA_SIG_free(sign);
@@ -2044,6 +2048,9 @@ process_openssl_dsa_verify_op_evp(struct rte_crypto_op *cop,
if (dsa_ctx)
EVP_PKEY_CTX_free(dsa_ctx);
+ BN_free(pub_key);
+ EVP_PKEY_free(pkey);
+
return ret;
}
#else
@@ -2674,6 +2681,9 @@ process_openssl_sm2_op_evp(struct rte_crypto_op *cop,
EVP_PKEY_CTX *kctx = NULL, *sctx = NULL, *cctx = NULL;
struct rte_crypto_asym_op *op = cop->asym;
OSSL_PARAM *params = sess->u.sm2.params;
+ EVP_MD_CTX *md_ctx = NULL;
+ ECDSA_SIG *ec_sign = NULL;
+ EVP_MD *check_md = NULL;
EVP_PKEY *pkey = NULL;
int ret = -1;
@@ -2739,10 +2749,7 @@ process_openssl_sm2_op_evp(struct rte_crypto_op *cop,
{
unsigned char signbuf[128] = {0};
const unsigned char *signptr;
- EVP_MD_CTX *md_ctx = NULL;
const BIGNUM *r, *s;
- ECDSA_SIG *ec_sign;
- EVP_MD *check_md;
size_t signlen;
kctx = EVP_PKEY_CTX_new_from_name(NULL, "SM2", NULL);
@@ -2800,11 +2807,8 @@ process_openssl_sm2_op_evp(struct rte_crypto_op *cop,
break;
case RTE_CRYPTO_ASYM_OP_VERIFY:
{
- unsigned char signbuf[128] = {0};
+ unsigned char signbuf[128] = {0}, *signbuf_new = NULL;
BIGNUM *r = NULL, *s = NULL;
- EVP_MD_CTX *md_ctx = NULL;
- ECDSA_SIG *ec_sign;
- EVP_MD *check_md;
size_t signlen;
kctx = EVP_PKEY_CTX_new_from_name(NULL, "SM2", NULL);
@@ -2857,11 +2861,12 @@ process_openssl_sm2_op_evp(struct rte_crypto_op *cop,
r = NULL;
s = NULL;
- signlen = i2d_ECDSA_SIG(ec_sign, (unsigned char **)&signbuf);
+ signbuf_new = signbuf;
+ signlen = i2d_ECDSA_SIG(ec_sign, (unsigned char **)&signbuf_new);
if (signlen <= 0)
goto err_sm2;
- if (!EVP_DigestVerifyFinal(md_ctx, signbuf, signlen))
+ if (!EVP_DigestVerifyFinal(md_ctx, signbuf_new, signlen))
goto err_sm2;
BN_free(r);
@@ -2880,6 +2885,9 @@ process_openssl_sm2_op_evp(struct rte_crypto_op *cop,
ret = 0;
cop->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
err_sm2:
+ EVP_MD_free(check_md);
+ EVP_MD_CTX_free(md_ctx);
+
if (kctx)
EVP_PKEY_CTX_free(kctx);
@@ -958,9 +958,11 @@ static int openssl_set_asym_session_parameters(
rsa_ctx = EVP_PKEY_CTX_new(pkey, NULL);
asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_RSA;
asym_session->u.r.ctx = rsa_ctx;
+ EVP_PKEY_free(pkey);
EVP_PKEY_CTX_free(key_ctx);
+ OSSL_PARAM_BLD_free(param_bld);
OSSL_PARAM_free(params);
- break;
+ ret = 0;
#else
RSA *rsa = RSA_new();
if (rsa == NULL)
@@ -1030,7 +1032,7 @@ static int openssl_set_asym_session_parameters(
}
asym_session->u.r.rsa = rsa;
asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_RSA;
- break;
+ ret = 0;
#endif
err_rsa:
BN_clear_free(n);
@@ -1042,7 +1044,7 @@ static int openssl_set_asym_session_parameters(
BN_clear_free(dmq1);
BN_clear_free(iqmp);
- return -1;
+ return ret;
}
case RTE_CRYPTO_ASYM_XFORM_MODEX:
{
@@ -1184,8 +1186,7 @@ static int openssl_set_asym_session_parameters(
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
BIGNUM *p = NULL, *g = NULL;
BIGNUM *q = NULL, *priv_key = NULL;
- BIGNUM *pub_key = BN_new();
- BN_zero(pub_key);
+ BIGNUM *pub_key = NULL;
OSSL_PARAM_BLD *param_bld = NULL;
p = BN_bin2bn((const unsigned char *)
@@ -1363,6 +1364,7 @@ static int openssl_set_asym_session_parameters(
asym_session->u.sm2.params = params;
OSSL_PARAM_BLD_free(param_bld);
+ BN_free(pkey_bn);
asym_session->xfrm_type = RTE_CRYPTO_ASYM_XFORM_SM2;
break;
@@ -1373,6 +1375,7 @@ static int openssl_set_asym_session_parameters(
if (asym_session->u.sm2.params)
OSSL_PARAM_free(asym_session->u.sm2.params);
+ BN_free(pkey_bn);
return -1;
#else
OPENSSL_LOG(WARNING, "SM2 unsupported in current OpenSSL Version");
@@ -1452,6 +1455,8 @@ static void openssl_reset_asym_session(struct openssl_asym_session *sess)
break;
case RTE_CRYPTO_ASYM_XFORM_DH:
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
+ OSSL_PARAM_BLD_free(sess->u.dh.param_bld);
+ OSSL_PARAM_BLD_free(sess->u.dh.param_bld_peer);
sess->u.dh.param_bld = NULL;
sess->u.dh.param_bld_peer = NULL;
#else
@@ -1461,6 +1466,7 @@ static void openssl_reset_asym_session(struct openssl_asym_session *sess)
break;
case RTE_CRYPTO_ASYM_XFORM_DSA:
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
+ OSSL_PARAM_BLD_free(sess->u.s.param_bld);
sess->u.s.param_bld = NULL;
#else
if (sess->u.s.dsa)