Details
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Bug
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Resolution: Unresolved
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P1: Critical
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None
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6.7.3
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None
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macOS,
Windows
Description
Found this among our users' crash reports on Sentry
Application Specific Information: Fatal Error: EXC_BAD_ACCESS / KERN_INVALID_ADDRESS / 0x2a9 Thread 104707 Crashed: 0 QtGui 0x1080b4fa8 QScreen::logicalDotsPerInchX (qscreen.cpp:235) 1 QtGui 0x10824a27c qt_defaultDpiX (qfont.cpp:119) 2 QtGui 0x108015b04 [inlined] QImageData::QImageData (qimage.cpp:94) 3 QtGui 0x108015b04 [inlined] QImageData::QImageData (qimage.cpp:99) 4 QtGui 0x108015b04 [inlined] std::__1::make_unique[abi:un170006]<T> (unique_ptr.h:689) 5 QtGui 0x108015b04 QImageData::create (qimage.cpp:123) 6 QtGui 0x10801aaa0 [inlined] QImage::QImage (qimage.cpp:819) 7 QtGui 0x10801aaa0 [inlined] QImage::QImage (qimage.cpp:818) 8 QtGui 0x10801aaa0 [inlined] QImage::QImage (qimage.cpp:803) 9 QtGui 0x10801aaa0 QImage::convertToFormat_helper (qimage.cpp:2210) 10 QtQuick 0x10751e7b8 [inlined] QImage::convertToFormat (qimage.h:125) 11 QtQuick 0x10751e7b8 QQuickDefaultTextureFactory::QQuickDefaultTextureFactory (qquickpixmapcache.cpp:125) 12 QtQuick 0x1075224b4 QQuickPixmapReader::processJob (qquickpixmapcache.cpp:916) 13 QtQuick 0x1075210d0 QQuickPixmapReader::processJobs (qquickpixmapcache.cpp:861) 14 QtQuick 0x1075209d4 ReaderThreadExecutionEnforcer::event (qquickpixmapcache.cpp:759) 15 QtCore 0x108d2ba18 QCoreApplicationPrivate::notify_helper (qcoreapplication.cpp:1326) 16 QtCore 0x108d2b4c8 QCoreApplication::notifyInternal2 (qcoreapplication.cpp:1152) 17 QtCore 0x108d2c484 [inlined] QCoreApplication::sendEvent (qcoreapplication.cpp:1593) 18 QtCore 0x108d2c484 QCoreApplicationPrivate::sendPostedEvents (qcoreapplication.cpp:1951) 19 QtCore 0x108ea1c04 QEventDispatcherUNIX::processEvents (qeventdispatcher_unix.cpp:415) 20 QtCore 0x108d34de4 [inlined] QEventLoop::processEvents (qeventloop.cpp:100) 21 QtCore 0x108d34de4 QEventLoop::exec (qeventloop.cpp:182) 22 QtCore 0x108e0f7fc QThread::exec (qthread.cpp:586) 23 QtQuick 0x1075233d8 QQuickPixmapReader::run (qquickpixmapcache.cpp:1163) 24 QtCore 0x108e9fd70 [inlined] QThreadPrivate::start::lambda::operator() (qthread_unix.cpp:323) 25 QtCore 0x108e9fd70 [inlined] (anonymous namespace)::terminate_on_exception<T> (qthread_unix.cpp:259) 26 QtCore 0x108e9fd70 QThreadPrivate::start (qthread_unix.cpp:282) 27 libsystem_pthread.dylib 0x19db4c2e0 _pthread_deallocate 28 libsystem_pthread.dylib 0x19db470f8 pthread_key_init_np
A crash occurred in qt_defaultDpiX() when accessing a screen variable that is apparently destroyed at the same time in the UI thread (e.g. when disconnecting an external monitor).
Q_GUI_EXPORT int qt_defaultDpiX() { if (QCoreApplication::instance()->testAttribute(Qt::AA_Use96Dpi)) return 96; if (qt_is_tty_app) return 75; if (const QScreen *screen = QGuiApplication::primaryScreen()) return qRound(screen->logicalDotsPerInchX()); <------ CRASH //PI has not been initialised, or it is being initialised. Give a default dpi return 100; }
Main thread:
libsystem_kernel 0x19db0aed0 null
QtCore 0x108ea42dc QBasicMutex::lockInternal (qmutex.cpp:666)
QtCore 0x108ea42dc QBasicMutex::lockInternal (qmutex.cpp:653)
QtQuick 0x107523150 QBasicMutex::lock (qmutex.h:41)
QtQuick 0x107523150 QMutexLocker<T>::QMutexLocker (qmutex.h:223)
QtQuick 0x107523150 QMutexLocker<T>::QMutexLocker (qmutex.h:220)
QtQuick 0x107523150 QQuickPixmapReader::cancel (qquickpixmapcache.cpp:1115)
QtQuick 0x107523c10 QQuickPixmapData::release (qquickpixmapcache.cpp:1458)
QtQuick 0x107528ecc QQuickPixmap::clear (qquickpixmapcache.cpp:1998)
QtQuick 0x10737a978 QQuickImageBase::loadPixmap (qquickimagebase.cpp:292)
QtQml 0x107a3711c QQmlPropertyData::writeProperty (qqmlpropertydata_p.h:376)
QtQml 0x107acd7dc tryConvertAndAssign (qqmlproperty.cpp:1434)
QtQml 0x107acd7dc QQmlPropertyPrivate::write (qqmlproperty.cpp:1544)
QtQml 0x107a33f70 QQmlBinding::slowWrite (qqmlbinding.cpp:547)
QtQml 0x107a3bca4 GenericBinding<T>::write (qqmlbinding.cpp:275)
QtQml 0x107a347c8 QQmlBinding::doUpdate (qqmlbinding.cpp:708)
QtQml 0x107a3271c QQmlBinding::update (qqmlbinding.cpp:165)
QtQml 0x107aae6d8 QQmlNotifier::emitNotify (qqmlnotifier.cpp:70)
QtCore 0x108d76a8c doActivate<T> (qobject.cpp:3976)
QtQuick 0x1073cc99c QQuickScreenInfo::devicePixelRatioChanged (moc_qquickscreen_p.cpp:485)
QtQuick 0x1073cc99c QQuickScreenInfo::setWrappedScreen (qquickscreen.cpp:350)
QtQuick 0x1073cde50 QQuickScreenAttached::screenChanged (qquickscreen.cpp:418)
QtQuick 0x1073cde50 QQuickScreenAttached::qt_static_metacall (moc_qquickscreen_p.cpp:591)
QtQuick 0x1073cde50 QQuickScreenAttached::qt_metacall (moc_qquickscreen_p.cpp:619)
QtCore 0x108d76ef4 doActivate<T> (qobject.cpp:4112)
QtGui 0x1080c0e34 QWindow::screenChanged (moc_qwindow.cpp:817)
QtGui 0x1080c0e34 QWindowPrivate::emitScreenChangedRecursion (qwindow.cpp:496)
QtGui 0x1080cae58 QWindowSystemInterface::handleScreenRemoved (qwindowsysteminterface.cpp:770)
libqcocoa 0x107d103e4 QCocoaScreen::remove (qcocoascreen.mm:186)
libqcocoa 0x107d0ea34 QCocoaScreen::updateScreens (qcocoascreen.mm:139)
libqcocoa 0x107d255d4 QCocoaWindow::windowDidChangeScreen (qcocoawindow.mm:1354)
QtCore 0x108d36e44 QMetaMethodInvoker::invokeImpl (qmetaobject.cpp:2754)
QtCore 0x108d3b6e0 QMetaMethod::invokeImpl (qmetaobject.cpp:2593)
libqcocoa 0x107d28a88 QMetaMethod::invoke<T> (qmetaobject.h:148)
libqcocoa 0x107d28a88 QMetaMethod::invoke<T> (qmetaobject.h:160)
libqcocoa 0x107d28a88 qRegisterNotificationCallbacks (qcocoawindow.mm:88)
...