From: Gerd Hoffmann <kraxel@redhat.com>
To: dri-devel@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>,
open list <linux-kernel@vger.kernel.org>,
"open list:VIRTIO GPU DRIVER"
<virtualization@lists.linux-foundation.org>,
Daniel Vetter <daniel@ffwll.ch>,
gurchetansingh@chromium.org, olvaffe@gmail.com
Subject: [PATCH v8 18/18] drm/virtio: add fence sanity check
Date: Fri, 23 Aug 2019 11:55:03 +0200 [thread overview]
Message-ID: <20190823095503.2261-19-kraxel__3978.82845006592$1566554256$gmane$org@redhat.com> (raw)
In-Reply-To: <20190823095503.2261-1-kraxel@redhat.com>
Make sure we don't leak half-initialized fences outside the driver.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/virtio/virtgpu_fence.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/virtio/virtgpu_fence.c b/drivers/gpu/drm/virtio/virtgpu_fence.c
index a0514f5bd006..a4b9881ca1d3 100644
--- a/drivers/gpu/drm/virtio/virtgpu_fence.c
+++ b/drivers/gpu/drm/virtio/virtgpu_fence.c
@@ -41,6 +41,10 @@ bool virtio_fence_signaled(struct dma_fence *f)
{
struct virtio_gpu_fence *fence = to_virtio_fence(f);
+ if (WARN_ON_ONCE(fence->f.seqno == 0))
+ /* leaked fence outside driver before completing
+ * initialization with virtio_gpu_fence_emit */
+ return false;
if (atomic64_read(&fence->drv->last_seq) >= fence->f.seqno)
return true;
return false;
--
2.18.1
next prev parent reply other threads:[~2019-08-23 9:55 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-23 9:54 [PATCH v8 00/18] drm/virtio: switch from ttm to gem shmem helpers Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 01/18] drm/virtio: pass gem reservation object to ttm init Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 02/18] drm/virtio: switch virtio_gpu_wait_ioctl() to gem helper Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-28 21:13 ` Chia-I Wu
2019-08-28 21:13 ` Chia-I Wu
2019-08-28 21:13 ` Chia-I Wu
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 03/18] drm/virtio: simplify cursor updates Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 04/18] drm/virtio: remove virtio_gpu_object_wait Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 05/18] drm/virtio: drop no_wait argument from virtio_gpu_object_reserve Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 06/18] drm/virtio: remove ttm calls from in virtio_gpu_object_{reserve,unreserve} Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 06/18] drm/virtio: remove ttm calls from in virtio_gpu_object_{reserve, unreserve} Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 07/18] drm/virtio: add virtio_gpu_object_array & helpers Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-28 21:27 ` Chia-I Wu
2019-08-28 21:27 ` Chia-I Wu
2019-08-28 21:27 ` Chia-I Wu
2019-08-23 9:54 ` [PATCH v8 08/18] drm/virtio: rework virtio_gpu_execbuffer_ioctl fencing Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 09/18] drm/virtio: rework virtio_gpu_object_create fencing Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 10/18] drm/virtio: rework virtio_gpu_transfer_from_host_ioctl fencing Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 11/18] drm/virtio: rework virtio_gpu_transfer_to_host_ioctl fencing Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 12/18] drm/virtio: rework virtio_gpu_cmd_context_{attach, detach}_resource Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 12/18] drm/virtio: rework virtio_gpu_cmd_context_{attach,detach}_resource Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 13/18] drm/virtio: drop virtio_gpu_object_list_validate/virtio_gpu_unref_list Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` [PATCH v8 14/18] drm/virtio: switch from ttm to gem shmem helpers Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:54 ` Gerd Hoffmann
2019-08-23 9:55 ` [PATCH v8 15/18] drm/virtio: remove virtio_gpu_alloc_object Gerd Hoffmann
2019-08-23 9:55 ` Gerd Hoffmann
2019-08-23 9:55 ` Gerd Hoffmann
2019-08-23 9:55 ` [PATCH v8 16/18] drm/virtio: drop virtio_gpu_object_{ref,unref} Gerd Hoffmann
2019-08-23 9:55 ` Gerd Hoffmann
2019-08-23 9:55 ` Gerd Hoffmann
2019-08-23 9:55 ` [PATCH v8 17/18] drm/virtio: drop virtio_gpu_object_{reserve, unreserve} Gerd Hoffmann
2019-08-23 9:55 ` [PATCH v8 17/18] drm/virtio: drop virtio_gpu_object_{reserve,unreserve} Gerd Hoffmann
2019-08-23 9:55 ` Gerd Hoffmann
2019-08-23 9:55 ` Gerd Hoffmann [this message]
2019-08-23 9:55 ` [PATCH v8 18/18] drm/virtio: add fence sanity check Gerd Hoffmann
2019-08-23 9:55 ` Gerd Hoffmann
2019-08-28 23:14 ` [PATCH v8 00/18] drm/virtio: switch from ttm to gem shmem helpers Chia-I Wu
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