From 590c54266333cf9b147144d80999086dc877aba3 Mon Sep 17 00:00:00 2001
From: Amos Kong <akong@redhat.com>
Date: Mon, 4 Aug 2014 03:16:39 +0200
Subject: [PATCH 3/4] virtio-rng: check return value of virtio_load()

Message-id: <1407122199-6365-1-git-send-email-akong@redhat.com>
Patchwork-id: 60412
O-Subject: [RHEL-7.1 qemu-kvm PATCH] virtio-rng: check return value of virtio_load()
Bugzilla: 1116941
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Fam Zheng <famz@redhat.com>
RH-Acked-by: Amit Shah <amit.shah@redhat.com>

Bugzilla: 1116941
Brew: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=7780748
Upstream: it's fixed by commit 3902d49e, we don't need to
          backport whole patch.

virtio_load() might fail, we should check the return value.

Signed-off-by: Amos Kong <akong@redhat.com>
---
 hw/virtio/virtio-rng.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/virtio/virtio-rng.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c
index 6895146..83d4a55 100644
--- a/hw/virtio/virtio-rng.c
+++ b/hw/virtio/virtio-rng.c
@@ -108,11 +108,16 @@ static int virtio_rng_load(QEMUFile *f, void *opaque, int version_id)
 {
     VirtIORNG *vrng = opaque;
     VirtIODevice *vdev = VIRTIO_DEVICE(vrng);
+    int ret;
 
     if (version_id != 1) {
         return -EINVAL;
     }
-    virtio_load(vdev, f);
+
+    ret = virtio_load(vdev, f);
+    if (ret) {
+        return ret;
+    }
 
     /* We may have an element ready but couldn't process it due to a quota
      * limit.  Make sure to try again after live migration when the quota may
-- 
1.7.1