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virtio-gpu: check max_outputs value

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The value must be less than VIRTIO_GPU_MAX_SCANOUT.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 1463653560-26958-4-git-send-email-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2016-05-19 12:25:57 +02:00 committed by Gerd Hoffmann
parent d0f0c8654a
commit 5e3d741c6a
1 changed files with 6 additions and 0 deletions
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6
hw/display/virtio-gpu.c
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@ -20,6 +20,7 @@
#include "hw/virtio/virtio-gpu.h"
#include "hw/virtio/virtio-bus.h"
#include "qemu/log.h"
#include "qapi/error.h"
static struct virtio_gpu_simple_resource*
virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id);
@ -929,6 +930,11 @@ static void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
bool have_virgl;
int i;
if (g->conf.max_outputs > VIRTIO_GPU_MAX_SCANOUT) {
error_setg(errp, "invalid max_outputs > %d", VIRTIO_GPU_MAX_SCANOUT);
return;
}
g->config_size = sizeof(struct virtio_gpu_config);
g->virtio_config.num_scanouts = g->conf.max_outputs;
virtio_init(VIRTIO_DEVICE(g), "virtio-gpu", VIRTIO_ID_GPU,