diff options
| author | Xie Yongji <xieyongji@bytedance.com> | 2021-05-17 11:49:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-19 09:53:08 +0300 |
| commit | 6ebfdf01cc899c4b39621126201bcecd5bcc065c (patch) | |
| tree | 01378e220fa2df35bdc29babe1f2895e1aa65659 /drivers/gpu/drm/virtio/virtgpu_kms.c | |
| parent | 5e2d303b452ac71d10e3de02dc025ef6a8cbf166 (diff) | |
| download | linux-6ebfdf01cc899c4b39621126201bcecd5bcc065c.tar.xz | |
drm/virtio: Fix double free on probe failure
[ Upstream commit cec7f1774605a5ef47c134af62afe7c75c30b0ee ]
The virtio_gpu_init() will free vgdev and vgdev->vbufs on failure.
But such failure will be caught by virtio_gpu_probe() and then
virtio_gpu_release() will be called to do some cleanup which
will free vgdev and vgdev->vbufs again. So let's set dev->dev_private
to NULL to avoid double free.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210517084913.403-2-xieyongji@bytedance.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_kms.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_kms.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c index 6dcc05ab31eb..4f855b242dfd 100644 --- a/drivers/gpu/drm/virtio/virtgpu_kms.c +++ b/drivers/gpu/drm/virtio/virtgpu_kms.c @@ -218,6 +218,7 @@ err_ttm: err_vbufs: vgdev->vdev->config->del_vqs(vgdev->vdev); err_vqs: + dev->dev_private = NULL; kfree(vgdev); return ret; } |