hw/display/virtio-gpu: Avoid mmap() for empty blob
Calling mmap() for an empty blob fails with EINVAL, causing QEMU to emit a spurious warning. Fixes: e0933d91b1cd ("virtio-gpu: Add virtio_gpu_resource_create_blob") Signed-off-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-ID: <20260825-dmabuf-v2-2-b3d64d3b9a0e@rsg.ci.i.u-tokyo.ac.jp>
Akihiko Odaki committed
Aug 25, 2026 at 16:28 UTC
3f163489c6efe8fb0de8e18097773f955ebaaa31
1 file changed
+1
-1
hw/display/virtio-gpu-udmabuf.c
+1
-1
@@ -139,7 +139,7 @@ void virtio_gpu_init_udmabuf(struct virtio_gpu_simple_resource *res)
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if (res->iov_cnt == 1 &&
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res->iov[0].iov_len < 4096) {
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pdata = res->iov[0].iov_base;
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- } else {
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+ } else if (res->blob_size) {
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virtio_gpu_create_udmabuf(res);
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if (res->dmabuf_fd < 0) {
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return;