compiz crashed with SIGSEGV in ReleaseReference()

[188236]

Crashed at startup

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: unity 7.1.2+14.04.20140218.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-10.30-generic 3.13.3
Uname: Linux 3.13.0-10-generic i686
ApportVersion: 2.13.2-0ubuntu5
Architecture: i386
CrashCounter: 1
CurrentDesktop: Unity
Date: Thu Feb 20 21:41:58 2014
ExecutablePath: /usr/bin/compiz
InstallationDate: Installed on 2014-02-09 (11 days ago)
InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140204)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=de_DE
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xb20bbbc1 <_ZN3nux15CachedTexture2D12LoadMipLevelEPNS_11BaseTextureEi+209>: mov (%eax),%edx
 PC (0xb20bbbc1) ok
 source "(%eax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 nux::CachedTexture2D::LoadMipLevel(nux::BaseTexture*, int) () from /usr/lib/i386-linux-gnu/libnux-graphics-4.0.so.0
 nux::CachedTexture2D::CachedTexture2D(nux::NResourceSet*, nux::Texture2D*) () from /usr/lib/i386-linux-gnu/libnux-graphics-4.0.so.0
 nux::TGLResourceFactory<nux::Texture2D, nux::CachedTexture2D>::BuildResource(nux::NResourceSet*, nux::ResourceData*) () from /usr/lib/i386-linux-gnu/libnux-graphics-4.0.so.0
 nux::NResourceCache::GetCachedResource(nux::ResourceData*) () from /usr/lib/i386-linux-gnu/libnux-graphics-4.0.so.0
 nux::GraphicsEngine::CacheResource(nux::ResourceData*) () from /usr/lib/i386-linux-gnu/libnux-graphics-4.0.so.0
Title: compiz crashed with SIGSEGV in nux::CachedTexture2D::LoadMipLevel()
UpgradeStatus: Upgraded to trusty on 2014-02-11 (9 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 ReleaseReference (this=0xbfd984b4) at ../NuxCore/ObjectPtr.h:346
 ~ObjectPtr (this=0xbfd984b4, __in_chrg=<optimized out>) at ../NuxCore/ObjectPtr.h:196
 nux::CachedTexture2D::LoadMipLevel (this=this@entry=0xa56a810, SourceTexture=SourceTexture@entry=0x9eece40, MipLevel=MipLevel@entry=0) at ./GLTextureResourceManager.cpp:493
 nux::CachedTexture2D::CachedTexture2D (this=0xa56a810, ResourceManager=0xa0059c4, SourceTexture=0x9eece40) at ./GLTextureResourceManager.cpp:440
 nux::TGLResourceFactory<nux::Texture2D, nux::CachedTexture2D>::BuildResource (this=0xb21432f0 <nux::NResourceCache::InitializeResourceFactories()::FactoryTexture2D>, ResourceManager=0xa0059c4, Resource=0x9eece40) at ./GLResourceManager.h:218

[Seth Arnold (seth-arnold)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Will Cooke (willcooke)]

As part of the big bug clear up for 16.04 LTS I am marking this bug as Wont Fix. These types of crasher are better handled by errors.ubutnu.com which can collate similar crash reports to help us identify persitent bugs rather than one-off crashes. Sorry we are not able to help with this specific issue. If you are still experiencing this crash, please re-open the bug and add the tag “desktop-bugscrub-reopen”. See https://wiki.ubuntu.com/BigDesktopBugScrub for more information.