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[Apport retracing service <1274438@xxxxxxxxxxxxxxxxxx>]

StacktraceTop:
 unity::switcher::Controller::Impl::GetCurrentSelection() const () from /tmp/apport_sandbox_HMeUMY/usr/lib/compiz/libunityshell.so
 unity::switcher::Controller::Impl::Hide(bool) () from /tmp/apport_sandbox_HMeUMY/usr/lib/compiz/libunityshell.so
 unity::UnityScreen::altTabTerminateCommon(CompAction*, unsigned int, std::vector<CompOption, std::allocator<CompOption> >&) () from /tmp/apport_sandbox_HMeUMY/usr/lib/compiz/libunityshell.so
 operator() (a2=..., a1=2, a0=0x25cd760, this=0x7fff789847b0) at /usr/include/boost/function/function_template.hpp:767
 compiz::private_screen::EventManager::triggerRelease (this=this@entry=0x2111ef8, action=0x25cd760, state=state@entry=2, arguments=...) at /build/buildd/compiz-0.9.10+13.10.20131011/src/event.cpp:191

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https://bugs.launchpad.net/bugs/1274438

Title:
  compiz crashed with SIGSEGV in
  unity::switcher::Controller::Impl::GetCurrentSelection()

Status in “unity” package in Ubuntu:
  New

Bug description:
  The switcher hung and then this crash occurred.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: unity 7.1.2+14.04.20131106.1-0ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0
  Uname: Linux 3.13.0-5-generic x86_64
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Jan 30 09:30:55 2014
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/compiz
  InstallationDate: Installed on 2013-12-06 (54 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  ProcCmdline: compiz
  SegvAnalysis:
   Segfault happened at: 0x7f07f56b85f3 <_ZNK5unity8switcher10Controller4Impl19GetCurrentSelectionEv+323>:	mov    (%rdi),%rbp
   PC (0x7f07f56b85f3) ok
   source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
   destination "%rbp" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   unity::switcher::Controller::Impl::GetCurrentSelection() const () from /usr/lib/compiz/libunityshell.so
   unity::switcher::Controller::Impl::Hide(bool) () from /usr/lib/compiz/libunityshell.so
   unity::UnityScreen::altTabTerminateCommon(CompAction*, unsigned int, std::vector<CompOption, std::allocator<CompOption> >&) () from /usr/lib/compiz/libunityshell.so
   compiz::private_screen::EventManager::triggerRelease(CompAction*, unsigned int, std::vector<CompOption, std::allocator<CompOption> >&) () from /usr/lib/libcompiz_core.so.ABI-20130415
   PrivateScreen::triggerStateNotifyBindings(std::vector<CompOption, std::allocator<CompOption> >&, _XkbStateNotifyEvent*, std::vector<CompOption, std::allocator<CompOption> >&) () from /usr/lib/libcompiz_core.so.ABI-20130415
  Title: compiz crashed with SIGSEGV in unity::switcher::Controller::Impl::GetCurrentSelection()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm autopilot cdrom dip fuse lpadmin plugdev sambashare sbuild sudo

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