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[Benjamin Xiao <1304949@xxxxxxxxxxxxxxxxxx>]

I am getting a lot of these crashes and from the numerous bug reports it
seems like a lot of people are too. Happens about once every week and
every time it happens, the whole interface freezes up for 30 seconds or
so before it restarts. I almost always get these while doing a search in
the Dash or quitting a fullscreen game.


This bug really breaks the Unity experience.

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https://bugs.launchpad.net/bugs/1304949

Title:
  compiz crashed with SIGSEGV in _int_malloc()

Status in Unity:
  New
Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  Fresh installation of Trusty, only updated via apt-get upgrade. After
  reboot, and using the starter, the system freezed and this failure was
  submitted.

  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: nvidia
  ApportVersion: 2.14.1-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Wed Apr  9 11:47:28 2014
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/compiz
  InstallationDate: Installed on 2014-04-09 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140331)
  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: 0x7f4d83248d71 <_int_malloc+689>:	mov    %r14,0x10(%r9)
   PC (0x7f4d83248d71) ok
   source "%r14" ok
   destination "0x10(%r9)" (0x9e63d00000000014) not located in a known VMA region (needed writable region)!
  SegvReason: writing unknown VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   _int_malloc (av=0x7f4d83587760 <main_arena>, bytes=128) at malloc.c:3489
   __GI___libc_malloc (bytes=128) at malloc.c:2891
   operator new(unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
   unity::dash::PlacesVScrollBar::UpdateTexture() () from /usr/lib/compiz/libunityshell.so
   unity::dash::PlacesVScrollBar::PostLayoutManagement(long) () from /usr/lib/compiz/libunityshell.so
  Title: compiz crashed with SIGSEGV in _int_malloc()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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