[dpdk-stable] patch 'net/mlx5: fix redundant free of Tx buffer' has been queued to stable release 17.05.1

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to stable release 17.05.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/22/17. So please
shout if anyone has objections.

Thanks.

	--yliu

---
>From 39ea3ea6e718267b7c2520f6641b6cf6f5d0637e Mon Sep 17 00:00:00 2001
From: Yongseok Koh <yskoh at mellanox.com>
Date: Wed, 31 May 2017 10:48:45 -0700
Subject: [PATCH] net/mlx5: fix redundant free of Tx buffer

[ upstream commit c80711c3fbfdae1449ad1cbc6b31067087bd9561 ]

SW completion ring of Tx (txq->elts) stores individual mbufs even if a
multi-segmented packet is sent. rte_pktmbuf_free_seg() must be used when
cleaning up the completion ring. Otherwise, chained mbufs are redundantly
freed and finally it would cause a crash.

Fixes: 1d88ba171942 ("net/mlx5: refactor Tx data path")

Signed-off-by: Yongseok Koh <yskoh at mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
---
 drivers/net/mlx5/mlx5_txq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
index 6c1387e..bf72468 100644
--- a/drivers/net/mlx5/mlx5_txq.c
+++ b/drivers/net/mlx5/mlx5_txq.c
@@ -117,7 +117,7 @@ txq_free_elts(struct txq_ctrl *txq_ctrl)
 		struct rte_mbuf *elt = (*elts)[elts_tail];
 
 		assert(elt != NULL);
-		rte_pktmbuf_free(elt);
+		rte_pktmbuf_free_seg(elt);
 #ifndef NDEBUG
 		/* Poisoning. */
 		memset(&(*elts)[elts_tail],
-- 
2.7.4