compiz crashed with SIGSEGV in nux::WindowCompositor::RenderTopViews()

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ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: libnux-0.9-0 0.9.38-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Wed Apr 6 21:10:19 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu-Studio 11.04 "Natty Narwhal" - Beta 1 amd64 (20110329.1)
ProcCmdline: compiz --replace
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f23e2329624 <_ZN3nux16WindowCompositor14RenderTopViewsEbRSt4listINS_13ObjectWeakPtrINS_10BaseWindowEEESaIS4_EEbb+2516>: mov 0x20(%r13),%rdi
 PC (0x7f23e2329624) ok
 source "0x20(%r13)" (0x00000061) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 nux::WindowCompositor::RenderTopViews(bool, std::list<nux::ObjectWeakPtr<nux::BaseWindow>, std::allocator<nux::ObjectWeakPtr<nux::BaseWindow> > >&, bool, bool) () from /usr/lib/libnux-0.9.so.0
 nux::WindowCompositor::Draw(bool, bool) () from /usr/lib/libnux-0.9.so.0
 nux::WindowThread::RenderInterfaceFromForeignCmd(nux::Rect*) () from /usr/lib/libnux-0.9.so.0
 UnityScreen::paintDisplay(CompRegion const&) () from /usr/lib/compiz/libunityshell.so
 UnityWindow::glDraw(GLMatrix const&, GLFragment::Attrib&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in nux::WindowCompositor::RenderTopViews()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin audio cdrom dialout lpadmin plugdev sambashare

[Omer Akram (om26er)]

Thanks for the bug report. This particular bug has already been reported and is a duplicate of bug 747486, so is being marked as such. Any further discussion regarding the bug should occur in the other report. Feel free to report any other bugs you may find.