Virtualbox.exe crashing

[Marcos80]

I don't know any exact steps to reproduce the crash, it happens randomly.

FAILURE_BUCKET_ID: NULL_CLASS_PTR_READ_c0000005_Qt5GuiVBox.dll!QScreen::devicePixelRatio

STACK_TEXT: 0000004443efeca0 00007ffdbc3abf2c : 0000000000000000 fffffff400000000 0000000000000000 0000019000000000 : Qt5GuiVBox!QScreen::devicePixelRatio+0x6 0000004443efecf0 00007ffdbc8c4baf : 00000238cef16c60 00000238cef16c60 0000004443efeec0 0000000000000011 : Qt5WidgetsVBox!QWidget::metric+0x2ac 0000004443efed50 00007ffdbc436ead : 0000000000490055 0000000000000000 0000000000000000 0000000000000000 : Qt5GuiVBox!QPaintDevice::devicePixelRatioF+0xf 0000004443efed80 00007ffdbc437033 : 00000238cd85a8f0 00000238cc561670 0000000000000000 00007ffdbc91ee89 : Qt5WidgetsVBox!QWindowsStylePrivate::nativeMetricScaleFactor+0x1d 0000004443efede0 00007ffddf501ad7 : 0000000000000000 0000000000000009 00000238cef16c60 0000004443efeec0 : Qt5WidgetsVBox!QWindowsStyle::pixelMetric+0x43 0000004443efee20 00007ffddf4f7376 : 0000000000000009 00000238cb889dd0 00000238cef16c60 0000004443efeec0 : qwindowsvistastyle!qt_plugin_query_metadata+0x10867 0000004443efee60 00007ffdbc4e6b02 : 00000238ce337850 0000004443eff0a0 0000004443efefa0 00000238ce337850 : qwindowsvistastyle!qt_plugin_query_metadata+0x6106 0000004443efee90 00007ff6a11f0db1 : bff0000000000000 00007ffdd01849fa 0000000000000001 00007ff6a11f6f02 : Qt5WidgetsVBox!QScrollBar::sizeHint+0x52 0000004443efef60 00007ffdd0351689 : 0000000000000000 00000238ce337850 406ae00000000000 4075b00000000000 : VirtualBoxTrustedMain+0x4b891 0000004443efefa0 00007ff6a12cffd3 : 00000238cd85a8f0 00007ffd0000000c 00000238cedf8910 0000000000000001 : Qt5CoreVBox!QObject::qt_static_metacall+0x1409 0000004443eff0f0 00007ffdd0351689 : 00000238c9856200 00000000000000d7 0000004443eff290 00007ffdbc636542 : VirtualBoxTrustedMain+0x12aab3 0000004443eff130 00007ff6a12d0b53 : 00000238cba06e10 4075b00000000015 00000238cba06e30 0000000000000001 : Qt5CoreVBox!QObject::qt_static_metacall+0x1409 0000004443eff280 00007ff6a11fa7c1 : 00000238cba06e30 00000044000000d7 00000238cc8b3330 00000238c9856200 : VirtualBoxTrustedMain+0x12b633 0000004443eff2c0 00007ff6a11fef05 : 00000238cd1d0c30 0000004443eff510 00000238cc8b3330 0000000000000001 : VirtualBoxTrustedMain+0x552a1 0000004443eff2f0 00007ff6a11fefc4 : 0000000000000001 00000238cba06e10 0000000000000000 00000238cd58d7c0 : VirtualBoxTrustedMain+0x599e5 0000004443eff320 00007ff6a11f584c : 00000238cba06fa8 0000004443eff510 00000238cba06e10 00000238c97d0000 : VirtualBoxTrustedMain+0x59aa4 0000004443eff350 00007ff6a11f5369 : 00000238cba06e10 0000000000000001 00000238cb7f7c90 00007ffdee855ba1 : VirtualBoxTrustedMain+0x5032c 0000004443eff380 00007ff6a11e751e : 00000238cd85a8f0 00007ffd62000062 00000238cb7f4801 00007ffdee855ba1 : VirtualBoxTrustedMain+0x4fe49 0000004443eff3b0 00007ff6a11edfee : 00000238cc505848 00000238cc54d960 00000238c9856200 00007ffdee855ba1 : VirtualBoxTrustedMain+0x41ffe 0000004443eff3e0 00007ffdd0351689 : 00003581a2a6d39b 00000238c97d0000 0000000000000000 0000000000000000 : VirtualBoxTrustedMain+0x48ace 0000004443eff410 00007ffd973b1c4b : 00000238c9856200 0000023800000007 00000238c9856200 0000000000000001 : Qt5CoreVBox!QObject::qt_static_metacall+0x1409 0000004443eff560 00007ffdd0351689 : 00000238cb889e90 00000238cb7f4801 0000004443eff5e0 0000004443eff5e8 : UICommon!UICommon::cleanup+0x14b 0000004443eff590 00007ffdd0331465 : 0000004443eff8f0 0000004400000003 00000238cb7dc690 00007ffdbc8e6e01 : Qt5CoreVBox!QObject::qt_static_metacall+0x1409 0000004443eff6e0 00007ffdd03313ef : 00000238c98665e8 0000000000000000 0000004443eff880 00007ffdd0451c90 : Qt5CoreVBox!QCoreApplicationPrivate::execCleanup+0x55 0000004443eff720 00007ff6a11a57bd : 00000238c97ffe20 0000000000000001 00000238c97ffe20 00007ff6a1305ac0 : Qt5CoreVBox!QCoreApplication::exec+0x16f 0000004443eff780 00007ff6a11a5a6c : 0000023800000001 00000238c99a1800 00000238c98139c0 0000000000000000 : VirtualBoxTrustedMain+0x29d 0000004443eff920 00007ff6a12e3c77 : 0000000000000001 00000238c97ffe20 00000238c98139c0 0000000000000000 : VirtualBoxTrustedMain+0x54c 0000004443eff9a0 00007ff6a12df422 : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 : VirtualBoxTrustedMain+0x13e757 0000004443effa30 00007ffded7a7614 : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 : VirtualBoxTrustedMain+0x139f02 0000004443effa70 00007ffdee8826a1 : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 : kernel32BaseThreadInitThunk+0x14 0000004443effaa0 0000000000000000 : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 : ntdllRtlUserThreadStart+0x21