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  1. Qt
  2. QTBUG-24034

[Crash] Using ShaderEffect can cause crashes or hangs

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    • Commits:
      c71c8c4619594a276d69378bbd77da5117afd566

      Description

      http://codereview.qt-project.org/#change,14800 has unearthed various problems with ShaderEffect, including crashing on QQuickView dtor, and spinning when syncing to scene graph (backtrace attached).

      (gdb) r
      ^C
      Program received signal SIGINT, Interrupt.
      0xb742d30a in QSGNode::markDirty (this=0xb5d03500, bits=...) at scenegraph/coreapi/qsgnode.cpp:481
      481 while (p) {
      (gdb) bt
      #0 0xb742d30a in QSGNode::markDirty (this=0xb5d03500, bits=...) at scenegraph/coreapi/qsgnode.cpp:481
      #1 0xb742cdb6 in QSGNode::removeChildNode (this=0xb5d03500, node=0xb5d03500) at scenegraph/coreapi/qsgnode.cpp:367
      #2 0xb749b3ea in QQuickCanvasPrivate::updateDirtyNode (this=0x80d36f8, item=0x82c6d78) at items/qquickcanvas.cpp:1517
      #3 0xb749aece in QQuickCanvasPrivate::updateDirtyNodes (this=0x80d36f8) at items/qquickcanvas.cpp:1456
      #4 0xb7494e95 in QQuickCanvasPrivate::syncSceneGraph (this=0x80d36f8) at items/qquickcanvas.cpp:228
      #5 0xb759c130 in QQuickTrivialWindowManager::renderCanvas (this=0x80c7dd8, canvas=0x80aa2b0) at items/qquickwindowmanager.cpp:1160
      #6 0xb759c545 in QQuickTrivialWindowManager::event (this=0x80c7dd8, e=0x82cb768) at items/qquickwindowmanager.cpp:1245
      #7 0xb78f8c02 in QApplicationPrivate::notify_helper (this=0x807cdc8, receiver=0x80c7dd8, e=0x82cb768) at kernel/qapplication.cpp:4045
      #8 0xb78f6487 in QApplication::notify (this=0xbffff5b8, receiver=0x80c7dd8, e=0x82cb768) at kernel/qapplication.cpp:3462
      #9 0xb61242cd in QCoreApplication::notifyInternal (this=0xbffff5b8, receiver=0x80c7dd8, event=0x82cb768) at kernel/qcoreapplication.cpp:676
      #10 0xb6127b93 in QCoreApplication::sendEvent (receiver=0x80c7dd8, event=0x82cb768) at kernel/qcoreapplication.h:205
      #11 0xb61252ca in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x807ce98) at kernel/qcoreapplication.cpp:1312
      #12 0xb6124db9 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1173
      #13 0xb617f20e in QCoreApplication::sendPostedEvents () at kernel/qcoreapplication.h:210
      #14 0xb617da92 in postEventSourceDispatch (s=0x808b910) at kernel/qeventdispatcher_glib.cpp:279
      #15 0xb5af45e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
      #16 0xb5af82d8 in ?? () from /lib/libglib-2.0.so.0
      #17 0xb5af84b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
      #18 0xb617eac6 in QEventDispatcherGlib::processEvents (this=0x8086220, flags=...) at kernel/qeventdispatcher_glib.cpp:424
      #19 0xb612471a in QCoreApplication::processEvents (flags=..., maxtime=50) at kernel/qcoreapplication.cpp:873
      #20 0x0804ba98 in QTest::qWait (ms=50) at ../../../../../qtbase/include/QtTest/../../src/testlib/qtestsystem.h:69
      #21 0x0804f942 in tst_qquickshadereffect::deleteShaderEffectSource (this=0xbffff5b0) at tst_qquickshadereffect.cpp:304

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              Assignee:
              aalpert-nokia Alan Alpert (closed Nokia identity) (Inactive)
              Reporter:
              chriadam Christopher Adams (closed Nokia identity) (Inactive)
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                Resolved:

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