patch 'net/enetfec: fix memory leak in Rx buffer cleanup' has been queued to stable release 24.11.4

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 24.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/05/25. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/7c3b93183491c79a9a1adf8d665538c7f5f65df2

Thanks.

Kevin

---
>From 7c3b93183491c79a9a1adf8d665538c7f5f65df2 Mon Sep 17 00:00:00 2001
From: Hemant Agrawal <hemant.agrawal at nxp.com>
Date: Mon, 6 Oct 2025 13:34:06 +0530
Subject: [PATCH] net/enetfec: fix memory leak in Rx buffer cleanup

[ upstream commit 979d00728b01a77f8f67f46c7cb06e2628542d29 ]

The RX buffer cleanup logic did not check for NULL before freeing mbufs,
which could lead to undefined behavior. This patch adds a NULL check
before freeing each mbuf.

Fixes: ecae71571b0d ("net/enetfec: support Rx/Tx")

Signed-off-by: Hemant Agrawal <hemant.agrawal at nxp.com>
Acked-by: Sachin Saxena <sachin.saxena at nxp.com>
---
 drivers/net/enetfec/enet_ethdev.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/enetfec/enet_ethdev.c b/drivers/net/enetfec/enet_ethdev.c
index 77ddc26cbc..bb903539e1 100644
--- a/drivers/net/enetfec/enet_ethdev.c
+++ b/drivers/net/enetfec/enet_ethdev.c
@@ -1,4 +1,4 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2020-2021,2023 NXP
+ * Copyright 2020-2021,2023-2024 NXP
  */
 
@@ -173,6 +173,8 @@ enet_free_buffers(struct rte_eth_dev *dev)
 		for (i = 0; i < rxq->bd.ring_size; i++) {
 			mbuf = rxq->rx_mbuf[i];
-			rxq->rx_mbuf[i] = NULL;
-			rte_pktmbuf_free(mbuf);
+			if (mbuf) {
+				rxq->rx_mbuf[i] = NULL;
+				rte_pktmbuf_free(mbuf);
+			}
 			bdp = enet_get_nextdesc(bdp, &rxq->bd);
 		}
@@ -560,5 +562,5 @@ err_alloc:
 	}
 	rte_free(rxq);
-	return errno;
+	return -ENOMEM;
 }
 
-- 
2.51.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-10-31 13:53:55.468295243 +0000
+++ 0107-net-enetfec-fix-memory-leak-in-Rx-buffer-cleanup.patch	2025-10-31 13:53:52.285524145 +0000
@@ -1 +1 @@
-From 979d00728b01a77f8f67f46c7cb06e2628542d29 Mon Sep 17 00:00:00 2001
+From 7c3b93183491c79a9a1adf8d665538c7f5f65df2 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 979d00728b01a77f8f67f46c7cb06e2628542d29 ]
+
@@ -11 +12,0 @@
-Cc: stable at dpdk.org
@@ -20 +21 @@
-index bcecab828e..60bb4f7ebd 100644
+index 77ddc26cbc..bb903539e1 100644
@@ -40 +41 @@
-@@ -548,5 +550,5 @@ err_alloc:
+@@ -560,5 +562,5 @@ err_alloc: