When browse http://www.scirra.com/labs/perftest-2d/ with gfx.canvas.azure.enable=true, firefox for Linux crashes the following stack. This bug was filed from the Socorro interface and is report bp-dad23233-c988-4cad-aa7c-eaaf12120201 . ============================================================= 0 libxul.so _moz_cairo_scaled_font_destroy gfx/cairo/cairo/src/cairo-scaled-font.c:1220 1 libxul.so mozilla::gfx::ScaledFontBase::~ScaledFontBase gfx/2d/ScaledFontBase.cpp:92 2 libxul.so mozilla::gfx::ScaledFontBase::~ScaledFontBase gfx/2d/ScaledFontBase.cpp:94 3 libxul.so nsCanvasBidiProcessorAzure::DrawText content/canvas/src/nsCanvasRenderingContext2DAzure.cpp:3034 4 libxul.so nsBidiPresUtils::ProcessText layout/base/nsBidiPresUtils.cpp:1824 5 libxul.so nsCanvasRenderingContext2DAzure::DrawOrMeasureText content/canvas/src/nsCanvasRenderingContext2DAzure.cpp:3332 6 libxul.so nsIDOMCanvasRenderingContext2D_FillText obj-firefox/js/xpconnect/src/dom_quickstubs.cpp:2535 7 libxul.so js::InvokeKernel js/src/jscntxtinlines.h:311 8 libxul.so js::Interpret js/src/jsinterp.cpp:2801 9 libxul.so js::InvokeKernel js/src/jsinterp.cpp:537 10 libxul.so js::Invoke js/src/jsinterp.h:157 11 libxul.so JS_CallFunctionValue js/src/jsapi.cpp:5452 12 libxul.so nsJSContext::CallEventHandler dom/base/nsJSEnvironment.cpp:1973 13 libxul.so nsGlobalWindow::RunTimeout dom/base/nsGlobalWindow.cpp:9375 14 libxul.so nsGlobalWindow::TimerCallback dom/base/nsGlobalWindow.cpp:9763 15 libxul.so nsTimerImpl::Fire xpcom/threads/nsTimerImpl.cpp:428 16 libxul.so nsTimerEvent::Run xpcom/threads/nsTimerImpl.cpp:524 17 libxul.so nsThread::ProcessNextEvent xpcom/threads/nsThread.cpp:657 18 libxul.so NS_ProcessNextEvent_P obj-firefox/xpcom/build/nsThreadUtils.cpp:245 19 libxul.so mozilla::ipc::MessagePump::Run ipc/glue/MessagePump.cpp:134 20 libxul.so MessageLoop::Run ipc/chromium/src/base/message_loop.cc:208 21 libxul.so nsBaseAppShell::Run widget/xpwidgets/nsBaseAppShell.cpp:189 22 libxul.so nsAppStartup::Run toolkit/components/startup/nsAppStartup.cpp:220 23 libxul.so XRE_main toolkit/xre/nsAppRunner.cpp:3537 24 firefox main browser/app/nsBrowserApp.cpp:205 25 libc-2.13.so libc-2.13.so@0x2130c 26 firefox firefox@0x1b9f

This is a known problem of the font handling.

Comment on attachment 593549 [details] [diff] [review] Make sure mScaledFont is initialised if USE_CAIRO is on Please implement ScaledFontFreetype and get rid of this constructor instead.

Can we land this? With this bug resolved, we can test better Skia and if the performance is better than Cairo (and I think it is) we can switch to Skia by default.

Autoland Patchset: Patches: 593588 Branch: mozilla-central => try Destination: http://hg.mozilla.org/try/pushloghtml?changeset=a627a8131be2 Try run started, revision a627a8131be2. To cancel or monitor the job, see: https://tbpl.mozilla.org/?tree=Try&rev=a627a8131be2

Try run for a627a8131be2 is complete. Detailed breakdown of the results available here: https://tbpl.mozilla.org/?tree=Try&rev=a627a8131be2 Results (out of 209 total builds): success: 174 warnings: 21 failure: 14 Builds (or logs if builds failed) available at: http://ftp.mozilla.org/pub/mozilla.org/firefox/try-builds/autolanduser@mozilla.com-a627a8131be2