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** Attachment added: "ThreadStacktrace.txt"
   https://bugs.launchpad.net/bugs/1304699/+attachment/4075947/+files/ThreadStacktrace.txt

** Attachment removed: "CoreDump.gz"
   https://bugs.launchpad.net/bugs/1304699/+attachment/4075928/+files/CoreDump.gz

** Changed in: unity (Ubuntu)
   Importance: Undecided => Medium

** Summary changed:

- compiz crashed with SIGSEGV in std::_Sp_counted_base<()
+ compiz crashed with SIGSEGV in __exchange_and_add()

** Tags removed: need-amd64-retrace

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https://bugs.launchpad.net/bugs/1304699

Title:
  compiz crashed with SIGSEGV in __exchange_and_add()

Status in “unity” package in Ubuntu:
  New

Bug description:
  Crashed when I exit a wine/playonlinux application

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: unity 7.2.0+14.04.20140404-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
  Uname: Linux 3.13.0-23-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: Unity
  Date: Tue Apr  8 17:45:39 2014
  ExecutablePath: /usr/bin/compiz
  InstallationDate: Installed on 2014-04-01 (7 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  ProcCmdline: compiz
  SegvAnalysis:
   Segfault happened at: 0x7f36754a976e <_ZNSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE10_M_releaseEv+30>:	lock xadd %edx,(%rax)
   PC (0x7f36754a976e) ok
   source "%edx" ok
   destination "(%rax)" (0x7f367ac9b620) in non-writable VMA region: 0x7f367ac9b000-0x7f367ac9c000 r--p /usr/lib/compiz/libwall.so
  SegvReason: writing VMA /usr/lib/compiz/libwall.so
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() () from /usr/lib/compiz/libunityshell.so
   unity::UnityWindow::CleanupCachedTextures() () from /usr/lib/compiz/libunityshell.so
   unity::UnityWindow::OnTerminateSpread() () from /usr/lib/compiz/libunityshell.so
   unity::UnityScreen::OnTerminateSpread() () from /usr/lib/compiz/libunityshell.so
   sigc::internal::signal_emit0<void, sigc::nil>::emit(sigc::internal::signal_impl*) () from /usr/lib/compiz/libunityshell.so
  Title: compiz crashed with SIGSEGV in std::_Sp_counted_base<()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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