compiz crashed with SIGSEGV in unity::ui::EdgeBarrierController::Impl::ResizeBarrierList() from ... from unity::UScreen::Refresh()

[bar]

after last night apt-get dist-upgrade

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: unity 6.4.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.5.0-14.16-generic 3.5.3
Uname: Linux 3.5.0-14-generic x86_64
ApportVersion: 2.5.1-0ubuntu7
Architecture: amd64
Date: Wed Sep 12 14:14:06 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120218)
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fadf739bc1b <_ZN5unity2ui21EdgeBarrierController4Impl17ResizeBarrierListERKSt6vectorIN3nux4RectESaIS5_EE+107>: mov (%rdx,%rcx,1),%r14
 PC (0x7fadf739bc1b) ok
 source "(%rdx,%rcx,1)" (0x200000094) not located in a known VMA region (needed readable region)!
 destination "%r14" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 unity::ui::EdgeBarrierController::Impl::ResizeBarrierList(std::vector<nux::Rect, std::allocator<nux::Rect> > const&) () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/compiz/libunityshell.so
 unity::UScreen::Refresh() () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/compiz/libunityshell.so
 unity::glib::Source::SourceCallback(void*) () from /usr/lib/libunity-core-6.0.so.5
Title: compiz crashed with SIGSEGV in unity::ui::EdgeBarrierController::Impl::ResizeBarrierList()
UpgradeStatus: Upgraded to quantal on 2012-09-02 (10 days ago)
UserGroups: adm cdrom dip fuse lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 ~__shared_count (this=0x200000094, __in_chrg=<optimized out>) at /usr/include/c++/4.6/bits/shared_ptr_base.h:550
 ~__shared_ptr (this=0x20000008c, __in_chrg=<optimized out>) at /usr/include/c++/4.6/bits/shared_ptr_base.h:751
 ~shared_ptr (this=0x20000008c, __in_chrg=<optimized out>) at /usr/include/c++/4.6/bits/shared_ptr.h:93
 _Destroy<std::shared_ptr<unity::ui::PointerBarrierWrapper> > (__pointer=0x20000008c) at /usr/include/c++/4.6/bits/stl_construct.h:94
 __destroy<std::shared_ptr<unity::ui::PointerBarrierWrapper>*> (__last=0x0, __first=0x20000008c) at /usr/include/c++/4.6/bits/stl_construct.h:104

[Bilal Akhtar (bilalakhtar)]

Are you using multiple monitors?

[Launchpad Janitor (janitor)]

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

[Walter Garcia-Fontes (walter-garcia)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates.

If this is still seen recently for any of the affected users please feel free to mark the "status" bug to "confirmed" again.

[Launchpad Janitor (janitor)]

[Expired for unity (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for Unity because there has been no activity for 60 days.]