Re: [Qemu-devel] [PATCH v2] virtio-net: fix the memory leak in rxfilter_notify()

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Nov 18, 2013 at 11:32:17PM +0800, Amos Kong wrote:
> object_get_canonical_path() returns a gchar*, it should be freeed by the
> caller.
> 
> Signed-off-by: Amos Kong <akong@redhat.com>

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

> ---
> v2: put gchar *path inside rxfilter_notify_enabled block
> ---
>  hw/net/virtio-net.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
> index 613f144..b75c753 100644
> --- a/hw/net/virtio-net.c
> +++ b/hw/net/virtio-net.c
> @@ -200,16 +200,16 @@ static void rxfilter_notify(NetClientState *nc)
>      VirtIONet *n = qemu_get_nic_opaque(nc);
>  
>      if (nc->rxfilter_notify_enabled) {
> +        gchar *path = object_get_canonical_path(OBJECT(n->qdev));
>          if (n->netclient_name) {
>              event_data = qobject_from_jsonf("{ 'name': %s, 'path': %s }",
> -                                    n->netclient_name,
> -                                    object_get_canonical_path(OBJECT(n->qdev)));
> +                                    n->netclient_name, path);
>          } else {
> -            event_data = qobject_from_jsonf("{ 'path': %s }",
> -                                    object_get_canonical_path(OBJECT(n->qdev)));
> +            event_data = qobject_from_jsonf("{ 'path': %s }", path);
>          }
>          monitor_protocol_event(QEVENT_NIC_RX_FILTER_CHANGED, event_data);
>          qobject_decref(event_data);
> +        g_free(path);
>  
>          /* disable event notification to avoid events flooding */
>          nc->rxfilter_notify_enabled = 0;
> -- 
> 1.8.3.1