From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, qemu-devel@nongnu.org
Cc: Jason Wang <jasowang@redhat.com>, qemu-stable@nongnu.org
Subject: [Qemu-devel] [PATCH] virtio-pci: reset modern vq meta data
Date: Tue, 14 Mar 2017 15:25:05 +0800 [thread overview]
Message-ID: <1489476305-27139-1-git-send-email-jasowang@redhat.com> (raw)
We don't reset proxy->vqs[].{num|desc[]|avail[]|used[]}. This means if
a driver enable the vq without setting vq address after reset. The old
addresses were leaked. Fixing this by resetting modern vq meta data
during device reset.
Cc: qemu-stable@nongnu.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/virtio/virtio-pci.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index b76f3f6..7c36b9c 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1857,6 +1857,10 @@ static void virtio_pci_reset(DeviceState *qdev)
for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
proxy->vqs[i].enabled = 0;
+ proxy->vqs[i].num = 0;
+ proxy->vqs[i].desc[0] = proxy->vqs[i].desc[1] = 0;
+ proxy->vqs[i].avail[0] = proxy->vqs[i].avail[1] = 0;
+ proxy->vqs[i].used[0] = proxy->vqs[i].used[1] = 0;
}
}
--
2.7.4
next reply other threads:[~2017-03-14 7:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-14 7:25 Jason Wang [this message]
2017-03-20 13:31 ` [Qemu-devel] [PATCH] virtio-pci: reset modern vq meta data Stefan Hajnoczi
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