[dpdk-stable] patch 'net/virtio: fix unchecked return value' has been queued to stable release 18.08.1

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 18.08.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 12/08/18. 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. If the code is different (ie: not only metadata diffs), due for example to
a change in context or macro names, please double check it.

Thanks.

Kevin Traynor

---
>From 254dc4067fa088e5f7687231f9a0118b73d7bad5 Mon Sep 17 00:00:00 2001
From: Tiwei Bie <tiwei.bie at intel.com>
Date: Wed, 7 Nov 2018 17:01:01 +0800
Subject: [PATCH] net/virtio: fix unchecked return value

[ upstream commit ecfae1510edc1391285aa566a2d31e7eae8fc6d2 ]

Coverity issue: 302861
Fixes: 6ba1f63b5ab0 ("virtio: support specification 1.0")

Signed-off-by: Tiwei Bie <tiwei.bie at intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
---
 drivers/net/virtio/virtio_pci.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
index 6bd22e54a..027be68c9 100644
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -611,7 +611,13 @@ virtio_read_caps(struct rte_pci_device *dev, struct virtio_hw *hw)
 			break;
 		case VIRTIO_PCI_CAP_NOTIFY_CFG:
-			rte_pci_read_config(dev, &hw->notify_off_multiplier,
+			ret = rte_pci_read_config(dev,
+					&hw->notify_off_multiplier,
 					4, pos + sizeof(cap));
-			hw->notify_base = get_cfg_addr(dev, &cap);
+			if (ret != 4)
+				PMD_INIT_LOG(DEBUG,
+					"failed to read notify_off_multiplier, ret %d",
+					ret);
+			else
+				hw->notify_base = get_cfg_addr(dev, &cap);
 			break;
 		case VIRTIO_PCI_CAP_DEVICE_CFG:
-- 
2.19.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2018-11-29 13:11:35.395577918 +0000
+++ 0014-net-virtio-fix-unchecked-return-value.patch	2018-11-29 13:11:34.000000000 +0000
@@ -1,11 +1,12 @@
-From ecfae1510edc1391285aa566a2d31e7eae8fc6d2 Mon Sep 17 00:00:00 2001
+From 254dc4067fa088e5f7687231f9a0118b73d7bad5 Mon Sep 17 00:00:00 2001
 From: Tiwei Bie <tiwei.bie at intel.com>
 Date: Wed, 7 Nov 2018 17:01:01 +0800
 Subject: [PATCH] net/virtio: fix unchecked return value
 
+[ upstream commit ecfae1510edc1391285aa566a2d31e7eae8fc6d2 ]
+
 Coverity issue: 302861
 Fixes: 6ba1f63b5ab0 ("virtio: support specification 1.0")
-Cc: stable at dpdk.org
 
 Signed-off-by: Tiwei Bie <tiwei.bie at intel.com>
 Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
@@ -14,10 +15,10 @@
  1 file changed, 8 insertions(+), 2 deletions(-)
 
 diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
-index 21110cd69..c8883c32e 100644
+index 6bd22e54a..027be68c9 100644
 --- a/drivers/net/virtio/virtio_pci.c
 +++ b/drivers/net/virtio/virtio_pci.c
-@@ -615,7 +615,13 @@ virtio_read_caps(struct rte_pci_device *dev, struct virtio_hw *hw)
+@@ -611,7 +611,13 @@ virtio_read_caps(struct rte_pci_device *dev, struct virtio_hw *hw)
  			break;
  		case VIRTIO_PCI_CAP_NOTIFY_CFG:
 -			rte_pci_read_config(dev, &hw->notify_off_multiplier,