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Date: Fri, 7 Aug 2020 11:00:11 +0800 From: 何鑫 <hexin.op@...edance.com> To: Daniel Vetter <daniel@...ll.ch>, airlied@...ux.ie, kraxel@...hat.com, Sumit Semwal <sumit.semwal@...aro.org> Cc: linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, virtualization@...ts.linux-foundation.org, linux-media@...r.kernel.org, Qi Liu <liuqi.16@...edance.com>, Muchun Song <songmuchun@...edance.com>, gregkh@...uxfoundation.org Subject: Re: [PATCH v3] drm/virtio: fix missing dma_fence_put() in virtio_gpu_execbuffer_ioctl() Xin He <hexin.op@...edance.com> 于2020年7月21日周二 下午6:17写道: > > From: Qi Liu <liuqi.16@...edance.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@...edance.com> > Signed-off-by: Xin He <hexin.op@...edance.com> > Signed-off-by: Qi Liu <liuqi.16@...edance.com> > Reviewed-by: Muchun Song <songmuchun@...edance.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
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