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[Launchpad Bug Tracker <1295119@xxxxxxxxxxxxxxxxxx>]

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

** Changed in: qtdeclarative-opensource-src (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1295119

Title:
  qmlscene crashed with SIGSEGV in mark()

Status in “qtdeclarative-opensource-src” package in Ubuntu:
  Confirmed

Bug description:
  Running my app https://launchpad.net/akari on Ubuntu Trusty sometimes
  gives me a segfault at the start.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: qmlscene 5.2.1-3ubuntu10
  ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
  Uname: Linux 3.13.0-18-generic x86_64
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Mar 20 14:06:36 2014
  EcryptfsInUse: Yes
  ExecutablePath: /usr/lib/x86_64-linux-gnu/qt5/bin/qmlscene
  InstallationDate: Installed on 2014-03-16 (3 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140316)
  ProcCmdline: /usr/lib/x86_64-linux-gnu/qt5/bin/qmlscene akari.qml
  SegvAnalysis:
   Segfault happened at: 0x7f481c54bc9e <_ZN3QV46Object11markObjectsEPNS_7ManagedEPNS_15ExecutionEngineE+94>:	movzbl 0x8(%rax),%ecx
   PC (0x7f481c54bc9e) ok
   source "0x8(%rax)" (0x00000098) not located in a known VMA region (needed readable region)!
   destination "%ecx" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: qtdeclarative-opensource-src
  StacktraceTop:
   QV4::Object::markObjects(QV4::Managed*, QV4::ExecutionEngine*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
   QV4::MemoryManager::mark() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
   QV4::MemoryManager::runGC() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
   QV4::MemoryManager::alloc(unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
   QV4::ExecutionEngine::newString(QString const&) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
  Title: qmlscene crashed with SIGSEGV in QV4::Object::markObjects()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo

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