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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2016-08-15 13:54:16 +0100 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2016-09-08 14:46:16 -0500 |
| commit | ca86c04717c23b2155a9366522736995bc9bd772 (patch) | |
| tree | 721427e0b53da8b9f2608ccb08bb83077e95bcca | |
| parent | 8e44714fe9f471474a439cafaaa386ffbddfa24a (diff) | |
| download | qemu-ca86c04717c23b2155a9366522736995bc9bd772.zip qemu-ca86c04717c23b2155a9366522736995bc9bd772.tar.gz qemu-ca86c04717c23b2155a9366522736995bc9bd772.tar.bz2 | |
virtio: decrement vq->inuse in virtqueue_discard()
virtqueue_discard() moves vq->last_avail_idx back so the element can be
popped again. It's necessary to decrement vq->inuse to avoid "leaking"
the element count.
Cc: qemu-stable@nongnu.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 58a83c61496eeb0d31571a07a51bc1947e3379ac)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
| -rw-r--r-- | hw/virtio/virtio.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 0333bb8..5fbaaaa 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -267,6 +267,7 @@ void virtqueue_discard(VirtQueue *vq, const VirtQueueElement *elem, unsigned int len) { vq->last_avail_idx--; + vq->inuse--; virtqueue_unmap_sg(vq, elem, len); } |