This bug was filed from the Socorro interface and is report bp-25546d2d-76a7-4ac5-b3b5-cd2542160729. ============================================================= First occurrence of this crash happened in Nightly 20160502172042. Since then it's happened 39 times across a handful of installations. ObjectLock() is in d3d11.dll. The stacks aren't super consistent but they mostly contain atidxx64.dll, and every crash is on a system with an AMD graphics card, though the exact cards and driver versions vary.
This looks like it's from the DXGI interop.
Component: Graphics → Canvas: WebGL
Priority: -- → P3
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