diff mbox series

[v3] drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl()

Message ID 20200721101647.42653-1-hexin.op@bytedance.com (mailing list archive)
State New, archived
Headers show
Series [v3] drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl() | expand

Commit Message

何鑫 July 21, 2020, 10:16 a.m. UTC 
From: Qi Liu <liuqi.16@bytedance.com>

We should put the reference count of the fence after calling
virtio_gpu_cmd_submit(). So add the missing dma_fence_put().

Fixes: 2cd7b6f08bc4 ("drm/virtio: add in/out fence support for explicit synchronization")
Co-developed-by: Xin He <hexin.op@bytedance.com>
Signed-off-by: Xin He <hexin.op@bytedance.com>
Signed-off-by: Qi Liu <liuqi.16@bytedance.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
---

changelog in v3:
1) Change the subject from "drm/virtio: fixed memory leak in virtio_gpu_execbuffer_ioctl()" to 
   "drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl()"
2) Rework the commit log

changelog in v2:
1) Add a change description 

 drivers/gpu/drm/virtio/virtgpu_ioctl.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Muchun Song July 29, 2020, 7:38 a.m. UTC | #1 
On Tue, Jul 21, 2020 at 6:17 PM Xin He <hexin.op@bytedance.com> wrote:
>
> From: Qi Liu <liuqi.16@bytedance.com>
>
> We should put the reference count of the fence after calling
> virtio_gpu_cmd_submit(). So add the missing dma_fence_put().
>
> Fixes: 2cd7b6f08bc4 ("drm/virtio: add in/out fence support for explicit synchronization")
> Co-developed-by: Xin He <hexin.op@bytedance.com>
> Signed-off-by: Xin He <hexin.op@bytedance.com>
> Signed-off-by: Qi Liu <liuqi.16@bytedance.com>
> Reviewed-by: Muchun Song <songmuchun@bytedance.com>
> ---
>
> changelog in v3:
> 1) Change the subject from "drm/virtio: fixed memory leak in virtio_gpu_execbuffer_ioctl()" to
>    "drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl()"
> 2) Rework the commit log
>
> changelog in v2:
> 1) Add a change description
>
>  drivers/gpu/drm/virtio/virtgpu_ioctl.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> index 5df722072ba0..19c5bc01eb79 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> @@ -179,6 +179,7 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data,
>
>         virtio_gpu_cmd_submit(vgdev, buf, exbuf->size,
>                               vfpriv->ctx_id, buflist, out_fence);
> +       dma_fence_put(&out_fence->f);
>         virtio_gpu_notify(vgdev);
>         return 0;
>
> --
> 2.21.1 (Apple Git-122.3)
>

Ping guys. Any comments or suggestions？
何鑫 Aug. 7, 2020, 3 a.m. UTC | #2 
Xin He <hexin.op@bytedance.com> 于2020年7月21日周二 下午6:17写道：
>
> From: Qi Liu <liuqi.16@bytedance.com>
>
> We should put the reference count of the fence after calling
> virtio_gpu_cmd_submit(). So add the missing dma_fence_put().
>
> Fixes: 2cd7b6f08bc4 ("drm/virtio: add in/out fence support for explicit synchronization")
> Co-developed-by: Xin He <hexin.op@bytedance.com>
> Signed-off-by: Xin He <hexin.op@bytedance.com>
> Signed-off-by: Qi Liu <liuqi.16@bytedance.com>
> Reviewed-by: Muchun Song <songmuchun@bytedance.com>
> ---
>
> changelog in v3:
> 1) Change the subject from "drm/virtio: fixed memory leak in virtio_gpu_execbuffer_ioctl()" to
>    "drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl()"
> 2) Rework the commit log
>
> changelog in v2:
> 1) Add a change description
>
>  drivers/gpu/drm/virtio/virtgpu_ioctl.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> index 5df722072ba0..19c5bc01eb79 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> @@ -179,6 +179,7 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data,
>
>         virtio_gpu_cmd_submit(vgdev, buf, exbuf->size,
>                               vfpriv->ctx_id, buflist, out_fence);
> +       dma_fence_put(&out_fence->f);
>         virtio_gpu_notify(vgdev);
>         return 0;
>
> --
> 2.21.1 (Apple Git-122.3)
>

cc Greg

--
Xin He
Greg Kroah-Hartman Aug. 7, 2020, 5:52 a.m. UTC | #3 
On Fri, Aug 07, 2020 at 11:00:11AM +0800, 何鑫 wrote:
> Xin He <hexin.op@bytedance.com> 于2020年7月21日周二 下午6:17写道：
> >
> > From: Qi Liu <liuqi.16@bytedance.com>
> >
> > We should put the reference count of the fence after calling
> > virtio_gpu_cmd_submit(). So add the missing dma_fence_put().
> >
> > Fixes: 2cd7b6f08bc4 ("drm/virtio: add in/out fence support for explicit synchronization")
> > Co-developed-by: Xin He <hexin.op@bytedance.com>
> > Signed-off-by: Xin He <hexin.op@bytedance.com>
> > Signed-off-by: Qi Liu <liuqi.16@bytedance.com>
> > Reviewed-by: Muchun Song <songmuchun@bytedance.com>
> > ---
> >
> > changelog in v3:
> > 1) Change the subject from "drm/virtio: fixed memory leak in virtio_gpu_execbuffer_ioctl()" to
> >    "drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl()"
> > 2) Rework the commit log
> >
> > changelog in v2:
> > 1) Add a change description
> >
> >  drivers/gpu/drm/virtio/virtgpu_ioctl.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> > index 5df722072ba0..19c5bc01eb79 100644
> > --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> > +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
> > @@ -179,6 +179,7 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data,
> >
> >         virtio_gpu_cmd_submit(vgdev, buf, exbuf->size,
> >                               vfpriv->ctx_id, buflist, out_fence);
> > +       dma_fence_put(&out_fence->f);
> >         virtio_gpu_notify(vgdev);
> >         return 0;
> >
> > --
> > 2.21.1 (Apple Git-122.3)
> >
> 
> cc Greg

Why?

$ ./scripts/get_maintainer.pl --file drivers/gpu/drm/virtio/virtgpu_ioctl.c
David Airlie <airlied@linux.ie> (maintainer:VIRTIO GPU DRIVER)
Gerd Hoffmann <kraxel@redhat.com> (maintainer:VIRTIO GPU DRIVER)
Daniel Vetter <daniel@ffwll.ch> (maintainer:DRM DRIVERS)
Sumit Semwal <sumit.semwal@linaro.org> (maintainer:DMA BUFFER SHARING FRAMEWORK)
"Christian König" <christian.koenig@amd.com> (maintainer:DMA BUFFER SHARING FRAMEWORK)
dri-devel@lists.freedesktop.org (open list:VIRTIO GPU DRIVER)
virtualization@lists.linux-foundation.org (open list:VIRTIO GPU DRIVER)
linux-kernel@vger.kernel.org (open list)
linux-media@vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK)
linaro-mm-sig@lists.linaro.org (moderated list:DMA BUFFER SHARING FRAMEWORK)
Gerd Hoffmann Aug. 7, 2020, 11:57 a.m. UTC | #4 
On Tue, Jul 21, 2020 at 06:16:47PM +0800, Xin He wrote:
> From: Qi Liu <liuqi.16@bytedance.com>
> 
> We should put the reference count of the fence after calling
> virtio_gpu_cmd_submit(). So add the missing dma_fence_put().

>  	virtio_gpu_cmd_submit(vgdev, buf, exbuf->size,
>  			      vfpriv->ctx_id, buflist, out_fence);
> +	dma_fence_put(&out_fence->f);
>  	virtio_gpu_notify(vgdev);

Pushed to drm-misc-fixes.

thanks,
  Gerd
diff mbox series

Patch

diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index 5df722072ba0..19c5bc01eb79 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -179,6 +179,7 @@  static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data,
 
 	virtio_gpu_cmd_submit(vgdev, buf, exbuf->size,
 			      vfpriv->ctx_id, buflist, out_fence);
+	dma_fence_put(&out_fence->f);
 	virtio_gpu_notify(vgdev);
 	return 0;