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Re: [Qemu-devel] [PATCH] display: virtio-gpu-3d: check virgl capabilitie
From: |
P J P |
Subject: |
Re: [Qemu-devel] [PATCH] display: virtio-gpu-3d: check virgl capabilities max_size |
Date: |
Tue, 13 Dec 2016 19:56:30 +0530 (IST) |
+-- On Tue, 13 Dec 2016, Gerd Hoffmann wrote --+
| I guess we want throw an error (VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER)
| in the error case then instead of leaving resp->hdr.type unset.
I see, okay. Does the patch below look okay?
===
diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c
index 758d33a..6ceeba3 100644
--- a/hw/display/virtio-gpu-3d.c
+++ b/hw/display/virtio-gpu-3d.c
@@ -370,8 +370,12 @@ static void virgl_cmd_get_capset(VirtIOGPU *g,
virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
&max_size);
- resp = g_malloc(sizeof(*resp) + max_size);
+ if (!max_size) {
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
+ return;
+ }
+ resp = g_malloc(sizeof(*resp) + max_size);
resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
virgl_renderer_fill_caps(gc.capset_id,
gc.capset_version,
===
Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
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