[dpdk-stable] patch 'crypto/aesni_mb: fix possible crypto job leak' has been queued to stable release 17.05.2

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 17.05.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/24/17. So please
shout if anyone has objections.

Thanks.

	--yliu

---
>From e2b2c7022f07472e77b816f615420553160589c5 Mon Sep 17 00:00:00 2001
From: Pablo de Lara <pablo.de.lara.guarch at intel.com>
Date: Thu, 13 Jul 2017 04:35:12 +0100
Subject: [PATCH] crypto/aesni_mb: fix possible crypto job leak

[ upstream commit 7c95d47c1ead28b7ffa0fc77e33d76b014c9511e ]

When dequeueing operations from an AESNI-MB device,
crypto jobs are dequeued from the internal scheduler
in the Multi-buffer library.

If the number of jobs available to retrieve
are higher than the number of crypto operations
that are required, then an extra job is retrieved
(due to an incorrect conditional), but not used.
This leads to a job leak and the operation associated
to that job will not be ever dequeued.

Fixes: 0f548b50a160 ("crypto/aesni_mb: process crypto op on dequeue")

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
Acked-by: Declan Doherty <declan.doherty at intel.com>
---
 drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
index 43e4865..9d40a9f 100644
--- a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
+++ b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
@@ -565,7 +565,7 @@ handle_completed_jobs(struct aesni_mb_qp *qp, JOB_AES_HMAC *job,
 	struct rte_crypto_op *op = NULL;
 	unsigned processed_jobs = 0;
 
-	while (job != NULL && processed_jobs < nb_ops) {
+	while (job != NULL) {
 		op = post_process_mb_job(qp, job);
 
 		if (op) {
@@ -575,6 +575,8 @@ handle_completed_jobs(struct aesni_mb_qp *qp, JOB_AES_HMAC *job,
 			qp->stats.dequeue_err_count++;
 			break;
 		}
+		if (processed_jobs == nb_ops)
+			break;
 
 		job = (*qp->op_fns->job.get_completed_job)(&qp->mb_mgr);
 	}
-- 
2.7.4