Quoting Jason Ekstrand (2017-08-03 19:06:02) > I'm not concerned about what happens to racy clients. They get what they get. > What concerns me is what happens if somehow the fence is replaced and deleted > before i915_gem_request_await_dma_fence takes it's reference. Can this cause > the kernel to segfault? Gotcha, yup nothing prevents that. fence = dma_fence_get_rcu_safe(&syncobj->fence); if (!fence) return -EINVAL; err = await_fence(); dma_fence_put(fence); if (err < 0) return; Happy? -Chris _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel