[PATCH] crypto/qat: fix ccm null aad pointer segfault

[Arkadiusz Kusztal]

This commit fixes a segfault, that occurs when NULL pointer
is being set to the aad pointer field.

Fixes: a815a04cea05 ("crypto/qat: support symmetric build op request")
Cc: stable at dpdk.org

Signed-off-by: Arkadiusz Kusztal <arkadiuszx.kusztal at intel.com>
---
 drivers/crypto/qat/dev/qat_crypto_pmd_gens.h | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/qat/dev/qat_crypto_pmd_gens.h b/drivers/crypto/qat/dev/qat_crypto_pmd_gens.h
index eebf2e6eb8..83a6c30218 100644
--- a/drivers/crypto/qat/dev/qat_crypto_pmd_gens.h
+++ b/drivers/crypto/qat/dev/qat_crypto_pmd_gens.h
@@ -881,10 +881,12 @@ enqueue_one_aead_job_gen1(struct qat_sym_session *ctx,
 		*(uint8_t *)&cipher_param->u.cipher_IV_array[0] =
 			q - ICP_QAT_HW_CCM_NONCE_OFFSET;
 
-		rte_memcpy((uint8_t *)aad->va +
-				ICP_QAT_HW_CCM_NONCE_OFFSET,
-			(uint8_t *)iv->va + ICP_QAT_HW_CCM_NONCE_OFFSET,
-			ctx->cipher_iv.length);
+		if (ctx->aad_len > 0) {
+			rte_memcpy((uint8_t *)aad->va +
+					ICP_QAT_HW_CCM_NONCE_OFFSET,
+				(uint8_t *)iv->va + ICP_QAT_HW_CCM_NONCE_OFFSET,
+				ctx->cipher_iv.length);
+		}
 		break;
 	default:
 		break;
-- 
2.13.6