From: Gerd Hoffmann <kraxel@redhat.com>
To: dri-devel@lists.freedesktop.org
Cc: olvaffe@gmail.com, gurchetansingh@chromium.org,
Gerd Hoffmann <kraxel@redhat.com>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
virtualization@lists.linux-foundation.org (open list:VIRTIO GPU
DRIVER), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v6 18/18] drm/virtio: add fence sanity check
Date: Tue, 2 Jul 2019 16:19:03 +0200 [thread overview]
Message-ID: <20190702141903.1131-19-kraxel@redhat.com> (raw)
In-Reply-To: <20190702141903.1131-1-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 70d6c4329778..98358ff9996c 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
prev parent reply other threads:[~2019-07-02 14:19 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190702141903.1131-1-kraxel@redhat.com>
2019-07-02 14:18 ` [PATCH v6 01/18] drm/virtio: pass gem reservation object to ttm init Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 02/18] drm/virtio: switch virtio_gpu_wait_ioctl() to gem helper Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 03/18] drm/virtio: simplify cursor updates Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 04/18] drm/virtio: remove virtio_gpu_object_wait Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 05/18] drm/virtio: drop no_wait argument from virtio_gpu_object_reserve Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 06/18] drm/virtio: remove ttm calls from in virtio_gpu_object_{reserve,unreserve} Gerd Hoffmann
2019-07-03 18:02 ` Chia-I Wu
2019-07-04 11:10 ` Gerd Hoffmann
2019-07-04 19:17 ` Chia-I Wu
2019-07-05 8:53 ` Gerd Hoffmann
2019-07-07 5:30 ` Chia-I Wu
2019-07-02 14:18 ` [PATCH v6 07/18] drm/virtio: add virtio_gpu_object_array & helpers Gerd Hoffmann
2019-07-03 18:31 ` Chia-I Wu
2019-07-03 19:52 ` Chia-I Wu
2019-07-04 11:19 ` Gerd Hoffmann
2019-07-04 11:11 ` Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 08/18] drm/virtio: rework virtio_gpu_execbuffer_ioctl fencing Gerd Hoffmann
2019-07-03 18:49 ` Chia-I Wu
2019-07-04 11:25 ` Gerd Hoffmann
2019-07-04 18:46 ` Chia-I Wu
2019-07-11 2:35 ` Chia-I Wu
2019-07-02 14:18 ` [PATCH v6 09/18] drm/virtio: rework virtio_gpu_object_create fencing Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 10/18] drm/virtio: drop virtio_gpu_object_list_validate/virtio_gpu_unref_list Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 11/18] drm/virtio: switch from ttm to gem shmem helpers Gerd Hoffmann
2019-07-04 13:33 ` Emil Velikov
2019-07-17 6:04 ` Chia-I Wu
2019-07-02 14:18 ` [PATCH v6 12/18] drm/virtio: remove virtio_gpu_alloc_object Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 13/18] drm/virtio: drop virtio_gpu_object_{ref,unref} Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 14/18] drm/virtio: rework virtio_gpu_transfer_from_host_ioctl fencing Gerd Hoffmann
2019-07-03 20:05 ` Chia-I Wu
2019-07-04 11:47 ` Gerd Hoffmann
2019-07-04 18:55 ` Chia-I Wu
2019-07-05 9:01 ` Gerd Hoffmann
2019-07-02 14:19 ` [PATCH v6 15/18] drm/virtio: rework virtio_gpu_transfer_to_host_ioctl fencing Gerd Hoffmann
2019-07-03 19:55 ` Chia-I Wu
2019-07-04 11:51 ` Gerd Hoffmann
2019-07-04 19:08 ` Chia-I Wu
2019-07-05 9:05 ` Gerd Hoffmann
2019-07-05 14:07 ` Gerd Hoffmann
2019-07-02 14:19 ` [PATCH v6 16/18] drm/virtio: rework virtio_gpu_cmd_context_{attach,detach}_resource Gerd Hoffmann
[not found] ` <CAAfnVBmKotCfkrM4hph4++FDrVUYR8WKpomP7Y0-aergqHTSyA@mail.gmail.com>
2019-07-04 12:00 ` Gerd Hoffmann
2019-07-02 14:19 ` [PATCH v6 17/18] drm/virtio: drop virtio_gpu_object_{reserve,unreserve} Gerd Hoffmann
2019-07-02 14:19 ` Gerd Hoffmann [this message]
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