[Qemu-devel] [PATCH] virtio-gpu: fix memory leak in set scanout

[Li Qiang <liq3ea@gmail.com>]

From: Li Qiang <liqiang6-s@360.cn>

In virtio_gpu_set_scanout function, when creating the 'rect'
its refcount is set to 2, by pixman_image_create_bits and
qemu_create_displaysurface_pixman function. This can lead 
a memory leak issues. This patch avoid this issue.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
---
 hw/display/virtio-gpu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 7a15c61..4aecea3 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -608,6 +608,7 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g,
             cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
             return;
         }
+        pixman_image_unref(rect);
         dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, scanout->ds);
     }
 
-- 
1.8.3.1