VirtualBox crashed with SIGSEGV in size()

[Daniel Winzen]

This crash happened during a Visual Studio 2015 installation in a virtual Windows 10 with 2D and 3D acceleration enabled.

ProblemType: Crash
DistroRelease: Ubuntu 15.10
Package: virtualbox-qt 5.0.4-dfsg-2
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Oct 17 21:48:26 2015
ExecutablePath: /usr/lib/virtualbox/VirtualBox
ExecutableTimestamp: 1441968294
InstallationDate: Installed on 2015-08-04 (74 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcCmdline: /usr/lib/virtualbox/VirtualBox --comment Windows\ 10\ EDU --startvm 407a6008-98fb-4565-8709-a7a0ad311fec --no-startvm-errormsgbox
ProcCwd: /home/daniel
SegvAnalysis:
 Segfault happened at: 0x7fab0412c1c5 <_ZN12QApplication15x11ProcessEventEP7_XEvent+1621>: mov (%rax),%rcx
 PC (0x7fab0412c1c5) ok
 source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rcx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: virtualbox
StacktraceTop:
 QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
 ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
 g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: VirtualBox crashed with SIGSEGV in QApplication::x11ProcessEvent()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 size (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:98
 size (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:137
 QApplication::x11ProcessEvent (this=0x7ffec731a080, event=event@entry=0x7ffec7319b60) at kernel/qapplication_x11.cpp:3533
 x11EventSourceDispatch (s=0xf96920, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
 ?? ()

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.