Require a minimum 16x16 size for the scanout, to make sure the guest can't set either width or height to zero. This (a) doesn't make sense at all and (b) causes problems in some UI code. When using spice this will triggers an assert().
Reported-by: Tyler Slabinski <[email protected]> Signed-off-by: Gerd Hoffmann <[email protected]> --- hw/display/virtio-gpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 9e37e0ac96b7..372b31ef0af2 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -677,6 +677,8 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g, if (ss.r.x > res->width || ss.r.y > res->height || + ss.r.width < 16 || + ss.r.height < 16 || ss.r.width > res->width || ss.r.height > res->height || ss.r.x + ss.r.width > res->width || -- 2.18.1
