Details
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Bug
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Resolution: Out of scope
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P2: Important
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None
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5.15.8
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None
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Debian Testing with Nvidia proprietary 525.89.02
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Linux/X11
Description
We ran into what appears to be a segmentation fault in Qt.
One of the last places it runs into is QQuickOpenGLShaderEffectCommon which is why I am reporting it against Qt Quick.
I dumped a core file from GDB, which should contain everything needed to debug this further, since debugging symbols for pretty much anything Qt are installed.
You can find it here: https://data.moto9000.moe/qt/1/core.191885.tar.xz (12,3 GiB when uncompressed)
While this doesn't happen every time I can reproduce the issue locally.
I will just put the backtrace in here:
#0 0x0000000000000000 in () #1 0x00007f8f43eba269 in QMetaObject::cast(QObject const*) const (this=0x7f8f44143140 <QObject::staticMetaObject>, obj=0x55b8ddf56be0) at kernel/qmetaobject.cpp:389 #2 0x00007f8f43eba2a5 in QMetaObject::cast(QObject*) const (this=<optimized out>, obj=<optimized out>) at kernel/qmetaobject.cpp:378 #3 0x00007f8f42b6422a in qobject_cast<QObject*>(QObject*) (object=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:519 #4 QtPrivate::QVariantValueHelper<QObject*>::object(QVariant const&) (v=[Thread 0x7f8e4a7fc6c0 (LWP 192005) exited] [Thread 0x7f8d7d9c36c0 (LWP 192105) exited] [New Thread 0x7f8e86ffd6c0 (LWP 195762)] [New Thread 0x7f8e87fff6c0 (LWP 195761)] [New Thread 0x7f8e4a7fc6c0 (LWP 195758)] [Thread 0x7f8e609e56c0 (LWP 192001) exited] [New Thread 0x7f8f0d3fc6c0 (LWP 195757)] [Thread 0x7f8e84ff96c0 (LWP 191983) exited] [Thread 0x7f8e857fa6c0 (LWP 191982) exited] [Thread 0x7f8e85ffb6c0 (LWP 191981) exited] [Thread 0x7f8e867fc6c0 (LWP 191980) exited] [Thread 0x7f8e86ffd6c0 (LWP 191979) exited] [Thread 0x7f8e877fe6c0 (LWP 191978) exited] [Thread 0x7f8e87fff6c0 (LWP 191977) exited] [Thread 0x7f8ea577f6c0 (LWP 191976) exited] [Thread 0x7f8ea6a8b6c0 (LWP 191975) exited] [New Thread 0x7f8e877fe6c0 (LWP 195763)] [Thread 0x7f8f0d3fc6c0 (LWP 191939) exited] [Thread 0x7f8d5ebff6c0 (LWP 192247) exited] QVariant(QQuickItem*, 0x55b8ddf56be0)) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:753 #5 QtPrivate::ObjectInvoker<QtPrivate::QVariantValueHelper<QObject*>, QVariant const&, QObject*>::invoke(QVariant const&) (a=QVariant(QQuickItem*, 0x55b8ddf56be0)) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:107 #6 qvariant_cast<QObject*>(QVariant const&) (v=[New Thread 0x7f8d5ebff6c0 (LWP 195764)] QVariant(QQuickItem*, 0x55b8ddf56be0)) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvariant.h:879 #7 QQuickOpenGLShaderEffectCommon::disconnectPropertySignals(QQuickItem*, QQuickOpenGLShaderEffectMaterialKey::ShaderType) (this=this@entry=0x55b8e7f311d8, item=0x55b8e7eb0930, shaderType=shaderType@entry=QQuickOpenGLShaderEffectMaterialKey::FragmentShader) at items/qquickopenglshadereffect.cpp:238 #8 0x00007f8f42b65d7a in QQuickOpenGLShaderEffect::~QQuickOpenGLShaderEffect() (this=0x55b8e7f31170, __in_chrg=<optimized out>) at items/qquickopenglshadereffect.cpp:660 #9 0x00007f8f42b65e29 in QQuickOpenGLShaderEffect::~QQuickOpenGLShaderEffect() (this=0x55b8e7f31170, __in_chrg=<optimized out>) at items/qquickopenglshadereffect.cpp:661 #10 0x00007f8f42b5e563 in QQuickShaderEffect::~QQuickShaderEffect() (this=this@entry=0x55b8e7eb0930, __in_chrg=<optimized out>) at items/qquickshadereffect.cpp:535 #11 0x00007f8f42bd0a35 in QQmlPrivate::QQmlElement<QQuickShaderEffect>::~QQmlElement() (this=0x55b8e7eb0930, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #12 QQmlPrivate::QQmlElement<QQuickShaderEffect>::~QQmlElement() (this=0x55b8e7eb0930, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #13 0x00007f8f43edb28e in QObjectPrivate::deleteChildren() (this=this@entry=0x55b8e4008a00) at kernel/qobject.cpp:2137 #14 0x00007f8f43ee7054 in QObject::~QObject() (this=this@entry=0x55b8e7fd9e40, __in_chrg=<optimized out>) at kernel/qobject.cpp:1115 #15 0x00007f8f42a566a2 in QQuickItem::~QQuickItem() (this=this@entry=0x55b8e7fd9e40, __in_chrg=<optimized out>) at items/qquickitem.cpp:2388 #16 0x00007f8f42bd03e5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7fd9e40, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #17 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7fd9e40, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #18 0x00007f8f43edb28e in QObjectPrivate::deleteChildren() (this=this@entry=0x55b8e7fd9960) at kernel/qobject.cpp:2137 #19 0x00007f8f43ee7054 in QObject::~QObject() (this=this@entry=0x55b8e7f5a030, __in_chrg=<optimized out>) at kernel/qobject.cpp:1115 #20 0x00007f8f42a566a2 in QQuickItem::~QQuickItem() (this=this@entry=0x55b8e7f5a030, __in_chrg=<optimized out>) at items/qquickitem.cpp:2388 #21 0x00007f8f42bd03e5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7f5a030, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #22 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7f5a030, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #23 0x00007f8f43edb28e in QObjectPrivate::deleteChildren() (this=this@entry=0x55b8e7f59cc0) at kernel/qobject.cpp:2137 #24 0x00007f8f43ee7054 in QObject::~QObject() (this=this@entry=0x55b8e7f59c00, __in_chrg=<optimized out>) at kernel/qobject.cpp:1115 #25 0x00007f8f42a566a2 in QQuickItem::~QQuickItem() (this=this@entry=0x55b8e7f59c00, __in_chrg=<optimized out>) at items/qquickitem.cpp:2388 #26 0x00007f8f42bd03e5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7f59c00, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #27 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7f59c00, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #28 0x00007f8f43edb28e in QObjectPrivate::deleteChildren() (this=this@entry=0x55b8e65e0170) at kernel/qobject.cpp:2137 #29 0x00007f8f43ee7054 in QObject::~QObject() (this=this@entry=0x55b8e65e00b0, __in_chrg=<optimized out>) at kernel/qobject.cpp:1115 #30 0x00007f8f42a566a2 in QQuickItem::~QQuickItem() (this=this@entry=0x55b8e65e00b0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2388 #31 0x00007f8f42bd03e5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e65e00b0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #32 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e65e00b0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #33 0x00007f8f43edb28e in QObjectPrivate::deleteChildren() (this=this@entry=0x55b8e7e63650) at kernel/qobject.cpp:2137 #34 0x00007f8f43ee7054 in QObject::~QObject() (this=this@entry=0x55b8e7e63590, __in_chrg=<optimized out>) at kernel/qobject.cpp:1115 #35 0x00007f8f42a566a2 in QQuickItem::~QQuickItem() (this=this@entry=0x55b8e7e63590, __in_chrg=<optimized out>) at items/qquickitem.cpp:2388 #36 0x00007f8f42bd03e5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7e63590, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #37 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7e63590, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #38 0x00007f8f43edb28e in QObjectPrivate::deleteChildren() (this=this@entry=0x55b8e7dc7640) at kernel/qobject.cpp:2137 #39 0x00007f8f43ee7054 in QObject::~QObject() (this=this@entry=0x55b8e7dc7580, __in_chrg=<optimized out>) at kernel/qobject.cpp:1115 #40 0x00007f8f42a566a2 in QQuickItem::~QQuickItem() (this=this@entry=0x55b8e7dc7580, __in_chrg=<optimized out>) at items/qquickitem.cpp:2388 #41 0x00007f8f42bd03e5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7dc7580, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #42 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e7dc7580, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #43 0x00007f8f43edb28e in QObjectPrivate::deleteChildren() (this=this@entry=0x55b8e65b0c20) at kernel/qobject.cpp:2137 #44 0x00007f8f43ee7054 in QObject::~QObject() (this=this@entry=0x55b8e65b0b60, __in_chrg=<optimized out>) at kernel/qobject.cpp:1115 #45 0x00007f8f42a566a2 in QQuickItem::~QQuickItem() (this=this@entry=0x55b8e65b0b60, __in_chrg=<optimized out>) at items/qquickitem.cpp:2388 #46 0x00007f8f42bd03e5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e65b0b60, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #47 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement() (this=0x55b8e65b0b60, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:144 #48 0x00007f8f43edd4bf in QObject::event(QEvent*) (this=0x55b8e65b0b60, e=0x55b8e49f8300) at kernel/qobject.cpp:1334 #49 0x00007f8f3f562fae in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x55b8c28a1580, receiver=receiver@entry=0x55b8e65b0b60, e=0x55b8e49f8300) at kernel/qapplication.cpp:3640 #50 0x00007f8f3f56a3bd in QApplication::notify(QObject*, QEvent*) (this=this@entry=0x7ffd5eca2d80, receiver=receiver@entry=0x55b8e65b0b60, e=e@entry=0x55b8e49f8300) at kernel/qapplication.cpp:3386 #51 0x000055b8c1190609 in Application::notify(QObject*, QEvent*) (this=0x7ffd5eca2d80, object=0x55b8e65b0b60, event=0x55b8e49f8300) at /home/juliangro/git/overte/interface/src/Application.cpp:4223 #52 0x00007f8f43eb16f8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55b8e65b0b60, event=0x55b8e49f8300) at kernel/qcoreapplication.cpp:1064 #53 0x00007f8f43eb18be in QCoreApplication::sendEvent(QObject*, QEvent*) (receiver=<optimized out>, event=<optimized out>) at kernel/qcoreapplication.cpp:1462 #54 0x00007f8f43eb4681 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x55b8c265eb20) at kernel/qcoreapplication.cpp:1821 #55 0x00007f8f43eb4b08 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=<optimized out>, event_type=<optimized out>) at kernel/qcoreapplication.cpp:1680 #56 0x00007f8f43f0a153 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x55b8c2f64780) at kernel/qeventdispatcher_glib.cpp:277 #57 0x00007f8f35d1e7a9 in g_main_dispatch (context=0x55b8c2cb0400) at ../../../glib/gmain.c:3454 #58 g_main_context_dispatch (context=context@entry=0x55b8c2cb0400) at ../../../glib/gmain.c:4172 #59 0x00007f8f35d1ea38 in g_main_context_iterate (context=context@entry=0x55b8c2cb0400, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4248 #60 0x00007f8f35d1eacc in g_main_context_iteration (context=0x55b8c2cb0400, may_block=1) at ../../../glib/gmain.c:4313 #61 0x00007f8f43f09836 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55b8c2fa7f10, flags=...) at kernel/qeventdispatcher_glib.cpp:423 #62 0x00007f8f43eb017b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffd5eca2910, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69 #63 0x00007f8f43eb82d6 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #64 0x00007f8f40d30e8c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1863 #65 0x00007f8f3f562f25 in QApplication::exec() () at kernel/qapplication.cpp:2832 #66 0x000055b8c0fffb27 in main(int, char const**) (argc=<optimized out>, argv=<optimized out>) at /home/juliangro/git/overte/interface/src/main.cpp:648