Bug 1578075 Comment 13 Edit History

Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.

Original comment by

Haik Aftandilian [:haik]

on 2019-09-09 11:39:22 PDT

````
Process 44244 stopped
* thread #35, name = 'PaintWorker #3', stop reason = EXC_BAD_ACCESS (code=2, address=0x700009b2aff8)
    frame #0 CoreGraphics`crossing_count() 
CoreGraphics`crossing_count:
->  0x7fff375482a5 <+482>: callq  0x7fff3754858b            ; get_y_inflections_2
    0x7fff375482aa <+487>: jmp    0x7fff375482b4            ; <+497>
    0x7fff375482ac <+489>: vzeroupper 
    0x7fff375482af <+492>: callq  0x7fff375c37c9            ; get_y_inflections_3
Target 0: (plugin-container) stopped.
(lldb) bt
* thread #35, name = 'PaintWorker #3', stop reason = EXC_BAD_ACCESS (code=2, address=0x700009b2aff8)
  * frame #0 CoreGraphics`crossing_count() 
    frame #1 CoreGraphics`crossing_count() 
    frame #2 CoreGraphics`crossing_count() 
    frame #3 CoreGraphics`crossing_count() 
    frame #4 CoreGraphics`crossing_count() 
    frame #5 CoreGraphics`crossing_count() 
    frame #6 CoreGraphics`crossing_count() 
    frame #7 CoreGraphics`crossing_count() 
    frame #8 CoreGraphics`crossing_count() 
  ...
  <STACK FRAMES OMITTED>
  ...
    frame #848 CoreGraphics`crossing_count() 
    frame #849 CoreGraphics`crossing_count() 
    frame #850 CoreGraphics`crossing_count() 
    frame #851 CoreGraphics`crossing_count() 
    frame #852 CoreGraphics`crossing_count() 
    frame #853 CoreGraphics`crossing_count() 
    frame #854 CoreGraphics`crossing_count() 
    frame #855 CoreGraphics`crossing_count() 
    frame #856 CoreGraphics`crossing_count() 
    frame #857 CoreGraphics`crossing_count() 
    frame #858 CoreGraphics`crossing_count() 
    frame #859 CoreGraphics`path_evaluate_levels() 
    frame #860 CoreGraphics`path_get_expected_outside_orientation() 
    frame #861 CoreGraphics`path_fix_orientation() 
    frame #862 CoreGraphics`CGPathCreateByNormalizingGlyphPath() 
    frame #863 libFontParser.dylib`FPFontCopyGlyphPath() 
    frame #864 CoreGraphics`CGFontCreateGlyphPath() 
    frame #865 CoreGraphics`CGFontCreateGlyphBitmapWithDilation() 
    frame #866 CoreGraphics`CGGlyphBuilder::create_missing_bitmaps() 
    frame #867 CoreGraphics`CGGlyphBuilder::lock_glyph_bitmaps() 
    frame #868 CoreGraphics`render_glyphs() 
    frame #869 CoreGraphics`draw_glyph_bitmaps() 
    frame #870 CoreGraphics`ripc_DrawGlyphs() 
    frame #871 CoreGraphics`CGContextDelegateDrawGlyphs() 
    frame #872 CoreGraphics`draw_glyphs() 
    frame #873 CoreText`DrawGlyphsAtPositions() 
    frame #874 CoreText`CTFontDrawGlyphs() 
    frame #875 XUL`Offscreen::getCG() at SkFontHost_mac.cpp:1190
    frame #876 XUL`SkScalerContext_Mac::generateImage() at SkFontHost_mac.cpp:1406
    frame #877 XUL`SkScalerContext::getImage() at SkScalerContext.cpp:521
    frame #878 XUL`SkStrike::findImage() at SkStrike.cpp:131
    frame #879 XUL`SkGlyphRunListPainter::drawForBitmapDevice() at SkGlyphRunPainter.cpp:244
    frame #880 XUL`SkDraw::drawGlyphRunList() at SkDraw_text.cpp:129
    frame #881 XUL`SkBitmapDevice::drawGlyphRunList() at SkBitmapDevice.cpp:541
    frame #882 XUL`SkGlyphRunBuilder::drawTextBlob() at SkGlyphRun.cpp:232
    frame #883 XUL`SkCanvas::onDrawTextBlob() at SkCanvas.cpp:2552
    frame #884 XUL`SkCanvas::drawTextBlob() at SkCanvas.cpp:2573
    frame #885 XUL`SkCanvas::drawTextBlob() at SkCanvas.h:1983
    frame #886 XUL`mozilla::gfx::DrawTargetSkia::DrawGlyphs() at DrawTargetSkia.cpp:1389
    frame #887 XUL`mozilla::gfx::DrawTargetSkia::FillGlyphs() at DrawTargetSkia.cpp:1396
    frame #888 XUL`mozilla::gfx::FillGlyphsCommand::ExecuteOnDT() at DrawCommands.h:577
    frame #889 XUL`mozilla::gfx::DrawTargetCaptureImpl::ReplayToDrawTarget() at DrawTargetCapture.cpp:330
    frame #890 XUL`mozilla::gfx::DrawTarget::DrawCapturedDT() at DrawTarget.cpp:168
    frame #891 XUL`mozilla::layers::PaintThread::AsyncPaintTask() at PaintThread.cpp:206
    frame #892 XUL`mozilla::layers::PaintThread::QueuePaintTask(mozilla::UniquePtr<mozilla::layers::PaintTask, mozilla::DefaultDelete<mozilla::layers::PaintTask> >&&)::$_7::operator()() const() at PaintThread.cpp:178
    frame #893 XUL`mozilla::detail::RunnableFunction<mozilla::layers::PaintThread::QueuePaintTask(mozilla::UniquePtr<mozilla::layers::PaintTask, mozilla::DefaultDelete<mozilla::layers::PaintTask> >&&)::$_7>::Run() at nsThreadUtils.h:564
    frame #894 XUL`nsThreadPool::Run() at nsThreadPool.cpp:246
    frame #895 XUL`nsThread::ProcessNextEvent() at nsThread.cpp:1225
    frame #896 XUL`NS_ProcessNextEvent() at nsThreadUtils.cpp:486
    frame #897 XUL`mozilla::ipc::MessagePumpForNonMainThreads::Run() at MessagePump.cpp:333
    frame #898 XUL`MessageLoop::RunInternal() at message_loop.cc:315
    frame #899 XUL`MessageLoop::RunHandler() at message_loop.cc:308
    frame #900 XUL`MessageLoop::Run() at message_loop.cc:290
    frame #901 XUL`nsThread::ThreadFunc() at nsThread.cpp:458
    frame #902 libnss3.dylib`_pt_root() at ptthread.c:198
    frame #903 libsystem_pthread.dylib`_pthread_start() 
    frame #904 libsystem_pthread.dylib`thread_start() 
(lldb) 
````

Revision 1 by

Haik Aftandilian [:haik]

on 2019-09-09 11:40:46 PDT

This was collected with a local debug build. Note the hundreds of omitted CoreGraphics`crossing_count() frames.

````
Process 44244 stopped
* thread #35, name = 'PaintWorker #3', stop reason = EXC_BAD_ACCESS (code=2, address=0x700009b2aff8)
    frame #0 CoreGraphics`crossing_count() 
CoreGraphics`crossing_count:
->  0x7fff375482a5 <+482>: callq  0x7fff3754858b            ; get_y_inflections_2
    0x7fff375482aa <+487>: jmp    0x7fff375482b4            ; <+497>
    0x7fff375482ac <+489>: vzeroupper 
    0x7fff375482af <+492>: callq  0x7fff375c37c9            ; get_y_inflections_3
Target 0: (plugin-container) stopped.
(lldb) bt
* thread #35, name = 'PaintWorker #3', stop reason = EXC_BAD_ACCESS (code=2, address=0x700009b2aff8)
  * frame #0 CoreGraphics`crossing_count() 
    frame #1 CoreGraphics`crossing_count() 
    frame #2 CoreGraphics`crossing_count() 
    frame #3 CoreGraphics`crossing_count() 
    frame #4 CoreGraphics`crossing_count() 
    frame #5 CoreGraphics`crossing_count() 
    frame #6 CoreGraphics`crossing_count() 
    frame #7 CoreGraphics`crossing_count() 
    frame #8 CoreGraphics`crossing_count() 
  ...
  <STACK FRAMES OMITTED>
  ...
    frame #848 CoreGraphics`crossing_count() 
    frame #849 CoreGraphics`crossing_count() 
    frame #850 CoreGraphics`crossing_count() 
    frame #851 CoreGraphics`crossing_count() 
    frame #852 CoreGraphics`crossing_count() 
    frame #853 CoreGraphics`crossing_count() 
    frame #854 CoreGraphics`crossing_count() 
    frame #855 CoreGraphics`crossing_count() 
    frame #856 CoreGraphics`crossing_count() 
    frame #857 CoreGraphics`crossing_count() 
    frame #858 CoreGraphics`crossing_count() 
    frame #859 CoreGraphics`path_evaluate_levels() 
    frame #860 CoreGraphics`path_get_expected_outside_orientation() 
    frame #861 CoreGraphics`path_fix_orientation() 
    frame #862 CoreGraphics`CGPathCreateByNormalizingGlyphPath() 
    frame #863 libFontParser.dylib`FPFontCopyGlyphPath() 
    frame #864 CoreGraphics`CGFontCreateGlyphPath() 
    frame #865 CoreGraphics`CGFontCreateGlyphBitmapWithDilation() 
    frame #866 CoreGraphics`CGGlyphBuilder::create_missing_bitmaps() 
    frame #867 CoreGraphics`CGGlyphBuilder::lock_glyph_bitmaps() 
    frame #868 CoreGraphics`render_glyphs() 
    frame #869 CoreGraphics`draw_glyph_bitmaps() 
    frame #870 CoreGraphics`ripc_DrawGlyphs() 
    frame #871 CoreGraphics`CGContextDelegateDrawGlyphs() 
    frame #872 CoreGraphics`draw_glyphs() 
    frame #873 CoreText`DrawGlyphsAtPositions() 
    frame #874 CoreText`CTFontDrawGlyphs() 
    frame #875 XUL`Offscreen::getCG() at SkFontHost_mac.cpp:1190
    frame #876 XUL`SkScalerContext_Mac::generateImage() at SkFontHost_mac.cpp:1406
    frame #877 XUL`SkScalerContext::getImage() at SkScalerContext.cpp:521
    frame #878 XUL`SkStrike::findImage() at SkStrike.cpp:131
    frame #879 XUL`SkGlyphRunListPainter::drawForBitmapDevice() at SkGlyphRunPainter.cpp:244
    frame #880 XUL`SkDraw::drawGlyphRunList() at SkDraw_text.cpp:129
    frame #881 XUL`SkBitmapDevice::drawGlyphRunList() at SkBitmapDevice.cpp:541
    frame #882 XUL`SkGlyphRunBuilder::drawTextBlob() at SkGlyphRun.cpp:232
    frame #883 XUL`SkCanvas::onDrawTextBlob() at SkCanvas.cpp:2552
    frame #884 XUL`SkCanvas::drawTextBlob() at SkCanvas.cpp:2573
    frame #885 XUL`SkCanvas::drawTextBlob() at SkCanvas.h:1983
    frame #886 XUL`mozilla::gfx::DrawTargetSkia::DrawGlyphs() at DrawTargetSkia.cpp:1389
    frame #887 XUL`mozilla::gfx::DrawTargetSkia::FillGlyphs() at DrawTargetSkia.cpp:1396
    frame #888 XUL`mozilla::gfx::FillGlyphsCommand::ExecuteOnDT() at DrawCommands.h:577
    frame #889 XUL`mozilla::gfx::DrawTargetCaptureImpl::ReplayToDrawTarget() at DrawTargetCapture.cpp:330
    frame #890 XUL`mozilla::gfx::DrawTarget::DrawCapturedDT() at DrawTarget.cpp:168
    frame #891 XUL`mozilla::layers::PaintThread::AsyncPaintTask() at PaintThread.cpp:206
    frame #892 XUL`mozilla::layers::PaintThread::QueuePaintTask(mozilla::UniquePtr<mozilla::layers::PaintTask, mozilla::DefaultDelete<mozilla::layers::PaintTask> >&&)::$_7::operator()() const() at PaintThread.cpp:178
    frame #893 XUL`mozilla::detail::RunnableFunction<mozilla::layers::PaintThread::QueuePaintTask(mozilla::UniquePtr<mozilla::layers::PaintTask, mozilla::DefaultDelete<mozilla::layers::PaintTask> >&&)::$_7>::Run() at nsThreadUtils.h:564
    frame #894 XUL`nsThreadPool::Run() at nsThreadPool.cpp:246
    frame #895 XUL`nsThread::ProcessNextEvent() at nsThread.cpp:1225
    frame #896 XUL`NS_ProcessNextEvent() at nsThreadUtils.cpp:486
    frame #897 XUL`mozilla::ipc::MessagePumpForNonMainThreads::Run() at MessagePump.cpp:333
    frame #898 XUL`MessageLoop::RunInternal() at message_loop.cc:315
    frame #899 XUL`MessageLoop::RunHandler() at message_loop.cc:308
    frame #900 XUL`MessageLoop::Run() at message_loop.cc:290
    frame #901 XUL`nsThread::ThreadFunc() at nsThread.cpp:458
    frame #902 libnss3.dylib`_pt_root() at ptthread.c:198
    frame #903 libsystem_pthread.dylib`_pthread_start() 
    frame #904 libsystem_pthread.dylib`thread_start() 
(lldb) 
````

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