Re: [PATCH] drm/virtio: Fix a double free in virtio_gpu_cmd_map()

[Gerd Hoffmann]

On Fri, Oct 30, 2020 at 02:48:08PM +0300, Dan Carpenter wrote:
> This is freed both here and in the caller (virtio_gpu_vram_map()) so
> it's a double free.  The correct place is only in the caller.
> 
> Fixes: 16845c5d5409 ("drm/virtio: implement blob resources: implement vram 
> object")
> Signed-off-by: Dan Carpenter 

Pushed to drm-misc-next.

thanks,
  Gerd

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[PATCH] drm/virtio: Fix a double free in virtio_gpu_cmd_map()

[Dan Carpenter]

This is freed both here and in the caller (virtio_gpu_vram_map()) so
it's a double free.  The correct place is only in the caller.

Fixes: 16845c5d5409 ("drm/virtio: implement blob resources: implement vram 
object")
Signed-off-by: Dan Carpenter 
---
 drivers/gpu/drm/virtio/virtgpu_vq.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c 
b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 72586cd8cc4c..3f200306c9d7 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -1212,10 +1212,8 @@ int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev,
struct virtio_gpu_resp_map_info *resp_buf;
 
resp_buf = kzalloc(sizeof(*resp_buf), GFP_KERNEL);
-   if (!resp_buf) {
-   virtio_gpu_array_put_free(objs);
+   if (!resp_buf)
return -ENOMEM;
-   }
 
cmd_p = virtio_gpu_alloc_cmd_resp
(vgdev, virtio_gpu_cmd_resource_map_cb, , sizeof(*cmd_p),
-- 
2.28.0

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