patch 'vhost: check GSO size validity' has been queued to stable release 23.11.4

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 23.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
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://git.dpdk.org/dpdk-stable/log/?h=23.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/commit/?h=23.11-staging&id=6bce3ec356d70103851656c31ed61244fc3cc346

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From 6bce3ec356d70103851656c31ed61244fc3cc346 Mon Sep 17 00:00:00 2001
From: Yunjian Wang <wangyunjian at huawei.com>
Date: Fri, 20 Dec 2024 11:45:09 +0800
Subject: [PATCH] vhost: check GSO size validity
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 7023f3e532787eec7be674efb7a4aa54f1626b6c ]

The value of tso_segsz cannot be 0, instead check that value of
gso_size was set.

Fixes: d0cf91303d73 ("vhost: add Tx offload capabilities")

Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
---
 lib/vhost/virtio_net.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
index 49c2052eba..25adf94ffa 100644
--- a/lib/vhost/virtio_net.c
+++ b/lib/vhost/virtio_net.c
@@ -2741,6 +2741,9 @@ vhost_dequeue_offload_legacy(struct virtio_net *dev, struct virtio_net_hdr *hdr,
 	}

 	if (hdr->gso_type != VIRTIO_NET_HDR_GSO_NONE) {
+		if (hdr->gso_size == 0)
+			goto error;
+
 		switch (hdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {
 		case VIRTIO_NET_HDR_GSO_TCPV4:
 		case VIRTIO_NET_HDR_GSO_TCPV6:
--
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2025-02-18 19:39:00.869052706 +0800
+++ 0003-vhost-check-GSO-size-validity.patch	2025-02-18 19:39:00.398244087 +0800
@@ -1 +1 @@
-From 7023f3e532787eec7be674efb7a4aa54f1626b6c Mon Sep 17 00:00:00 2001
+From 6bce3ec356d70103851656c31ed61244fc3cc346 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 7023f3e532787eec7be674efb7a4aa54f1626b6c ]
@@ -10 +12,0 @@
-Cc: stable at dpdk.org
@@ -19 +21 @@
-index 69901ab3b5..2ac5bc29a3 100644
+index 49c2052eba..25adf94ffa 100644
@@ -22 +24 @@
-@@ -2733,6 +2733,9 @@ vhost_dequeue_offload_legacy(struct virtio_net *dev, struct virtio_net_hdr *hdr,
+@@ -2741,6 +2741,9 @@ vhost_dequeue_offload_legacy(struct virtio_net *dev, struct virtio_net_hdr *hdr,