[dpdk-dev] [PATCH v3 3/3] crypto/qat: hebing add null point check and fix mem leak
Trahe, Fiona
fiona.trahe at intel.com
Tue Jan 23 13:16:17 CET 2018
Hi Yong,
> -----Original Message-----
> From: Yong Wang [mailto:wang.yong19 at zte.com.cn]
> Sent: Tuesday, January 23, 2018 2:45 AM
> To: Xing, Beilei <beilei.xing at intel.com>; Lu, Wenzhuo <wenzhuo.lu at intel.com>; Trahe, Fiona
> <fiona.trahe at intel.com>
> Cc: dev at dpdk.org; Yong Wang <wang.yong19 at zte.com.cn>
> Subject: [PATCH v8 3/3] crypto/qat: add null point check and fix mem leak
>
> There are several func calls to rte_zmalloc() which don't do null
> point check on the return value. And before return, the memory is not
> freed. Fix it by adding null point check and rte_free().
>
> Signed-off-by: Yong Wang <wang.yong19 at zte.com.cn>
> ---
> v3:
> * Rebase on master and modify again.
> v2:
> * Fix code style warning.
> ---
> drivers/crypto/qat/qat_adf/qat_algs_build_desc.c | 10 ++++++++++
> drivers/crypto/qat/qat_qp.c | 8 +++++++-
> 2 files changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
> b/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
> index db6c9a3..26f854c 100644
> --- a/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
> +++ b/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
> @@ -359,6 +359,11 @@ static int qat_alg_do_precomputes(enum icp_qat_hw_auth_algo hash_alg,
>
> in = rte_zmalloc("working mem for key",
> ICP_QAT_HW_AES_XCBC_MAC_STATE2_SZ, 16);
> + if (in == NULL) {
> + PMD_DRV_LOG(ERR, "Failed to alloc memory");
> + return -ENOMEM;
> + }
> +
> rte_memcpy(in, qat_aes_xcbc_key_seed,
> ICP_QAT_HW_AES_XCBC_MAC_STATE2_SZ);
> for (x = 0; x < HASH_XCBC_PRECOMP_KEY_NUM; x++) {
> @@ -389,6 +394,11 @@ static int qat_alg_do_precomputes(enum icp_qat_hw_auth_algo hash_alg,
> ICP_QAT_HW_GALOIS_E_CTR0_SZ);
> in = rte_zmalloc("working mem for key",
> ICP_QAT_HW_GALOIS_H_SZ, 16);
> + if (in == NULL) {
> + PMD_DRV_LOG(ERR, "Failed to alloc memory");
> + return -ENOMEM;
> + }
> +
> memset(in, 0, ICP_QAT_HW_GALOIS_H_SZ);
> if (AES_set_encrypt_key(auth_key, auth_keylen << 3,
> &enc_key) != 0) {
> diff --git a/drivers/crypto/qat/qat_qp.c b/drivers/crypto/qat/qat_qp.c
> index 0941a58..812dce9 100644
> --- a/drivers/crypto/qat/qat_qp.c
> +++ b/drivers/crypto/qat/qat_qp.c
> @@ -151,6 +151,11 @@ int qat_crypto_sym_qp_setup(struct rte_cryptodev *dev, uint16_t
> queue_pair_id,
> qp->op_cookies = rte_zmalloc("qat PMD op cookie pointer",
> qp_conf->nb_descriptors * sizeof(*qp->op_cookies),
> RTE_CACHE_LINE_SIZE);
> + if (qp->op_cookies == NULL) {
> + PMD_DRV_LOG(ERR, "Failed to alloc mem for cookie");
> + rte_free(qp);
> + return -ENOMEM;
> + }
>
> qp->mmap_bar_addr = pci_dev->mem_resource[0].addr;
> qp->inflights16 = 0;
> @@ -192,7 +197,7 @@ int qat_crypto_sym_qp_setup(struct rte_cryptodev *dev, uint16_t queue_pair_id,
> for (i = 0; i < qp->nb_descriptors; i++) {
> if (rte_mempool_get(qp->op_cookie_pool, &qp->op_cookies[i])) {
> PMD_DRV_LOG(ERR, "QAT PMD Cannot get op_cookie");
> - return -EFAULT;
> + goto create_err;
> }
>
> struct qat_crypto_op_cookie *sql_cookie =
> @@ -217,6 +222,7 @@ int qat_crypto_sym_qp_setup(struct rte_cryptodev *dev, uint16_t queue_pair_id,
> return 0;
>
> create_err:
[Fiona] Thanks for this - it was on my backlog to fix :)
Can you add following too, to cover errors that happen after the rte_mempool_create
if (qp->op_cookie_pool)
rte_mempool_free(qp->op_cookie_pool);
> + rte_free(qp->op_cookies);
> rte_free(qp);
> return -EFAULT;
> }
> --
> 1.8.3.1
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