This bug was filed from the Socorro interface and is report bp-3606cf36-24dd-4d20-89e7-212ac0170603. ============================================================= Crashing Thread (21), Name: Compositor Frame Module Signature Source 0 libxul.so mozilla::layers::WebRenderBridgeParent::RecvClearCachedResources gfx/layers/wr/WebRenderBridgeParent.cpp:716 1 libxul.so mozilla::layers::PWebRenderBridgeParent::OnMessageReceived obj-firefox/ipc/ipdl/PWebRenderBridgeParent.cpp:634 2 libxul.so mozilla::layers::PCompositorBridgeParent::OnMessageReceived(IPC::Message const&) 3 libxul.so mozilla::ipc::MessageChannel::DispatchAsyncMessage(IPC::Message const&) 4 libxul.so libxul.so@0xc3703a 5 libxul.so mozilla::ipc::MessageChannel::MessageTask::Run() 6 libxul.so MessageLoop::DoWork() 7 libxul.so base::MessagePumpDefault::Run(base::MessagePump::Delegate*) 8 libxul.so MessageLoop::Run() 9 libxul.so base::Thread::ThreadMain ipc/chromium/src/base/thread.cc:180 10 libxul.so ThreadFunc ipc/chromium/src/base/platform_thread_posix.cc:38 Ø 11 libpthread-2.25.so libpthread-2.25.so@0x7296 Ø 12 libc-2.25.so libc-2.25.so@0xed25e

Pushed by sikeda@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/af18a71db294 Add mDestroyed checks r=nical