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-rw-r--r--hw/display/virtio-gpu.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 6a26258..ca88cf4 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -714,6 +714,11 @@ virtio_gpu_resource_attach_backing(VirtIOGPU *g,
return;
}
+ if (res->iov) {
+ cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
+ return;
+ }
+
ret = virtio_gpu_create_mapping_iov(&ab, cmd, &res->addrs, &res->iov);
if (ret != 0) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;