Cc: Wen Congyang <address@hidden>
Cc: Stefano Stabellini <address@hidden>
Cc: address@hidden
Signed-off-by: Jason Wang <address@hidden>
---
hw/net/virtio-net.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 9b88775..fdb4edd 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -798,7 +798,7 @@ static void virtio_net_handle_ctrl(VirtIODevice
*vdev, VirtQueue *vq)
virtio_net_ctrl_ack status = VIRTIO_NET_ERR;
VirtQueueElement elem;
size_t s;
- struct iovec *iov;
+ struct iovec *iov, *iov2;
unsigned int iov_cnt;
while (virtqueue_pop(vq, &elem)) {
@@ -808,8 +808,12 @@ static void
virtio_net_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
exit(1);
}
- iov = elem.out_sg;
iov_cnt = elem.out_num;
+ s = sizeof(struct iovec) * elem.out_num;
+ iov = g_malloc(s);
+ memcpy(iov, elem.out_sg, s);
+ iov2 = iov;
+
s = iov_to_buf(iov, iov_cnt, 0, &ctrl, sizeof(ctrl));
iov_discard_front(&iov, &iov_cnt, sizeof(ctrl));
if (s != sizeof(ctrl)) {
@@ -833,6 +837,7 @@ static void virtio_net_handle_ctrl(VirtIODevice
*vdev, VirtQueue *vq)
virtqueue_push(vq, &elem, sizeof(status));
virtio_notify(vdev, vq);
+ g_free(iov2);
}
}
--
1.9.1