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[Charles Kerr <charles.kerr@xxxxxxxxxxxxx>]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

The rest of the backtrace tells a more interesting tale; it looks like maybe gtk-logout-helper was smashing the stack in a loop. gtk-logout-helper.c was removed in the 13.10 release, so It would help us a lot if you could test it on a currently supported Ubuntu version. When you test it and it is still an issue, kindly upload the updated logs by running apport-collect <bug #> and any other logs that are relevant for this particular issue. 
#669 0x0000000000406da8 in consolekit_fallback (action=action@entry=LOGOUT_DIALOG_TYPE_RESTART) at gtk-logout-helper.c:91
        error = 0x2e7ba50
        result = <optimized out>
#670 0x0000000000406da8 in consolekit_fallback (action=action@entry=LOGOUT_DIALOG_TYPE_RESTART) at gtk-logout-helper.c:91
        error = 0x2e7b8c0
        result = <optimized out>
#671 0x0000000000406da8 in consolekit_fallback (action=action@entry=LOGOUT_DIALOG_TYPE_RESTART) at gtk-logout-helper.c:91
        error = 0x2e7bb00
        result = <optimized out>

** Changed in: indicator-session (Ubuntu)
       Status: New => Incomplete

** Information type changed from Private to Public

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https://bugs.launchpad.net/bugs/1156036

Title:
  gtk-logout-helper crashed with SIGSEGV in __find_specmb()

Status in “indicator-session” package in Ubuntu:
  Incomplete

Bug description:
  After I run "sudo apt-get dist-upgrade" in terminal, today. It made
  upgrade, and when finished after some time reported problem.

  ProblemType: Crash
  DistroRelease: Ubuntu 13.04
  Package: indicator-session 12.10.5daily13.03.08-0ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-12.21-generic 3.8.2
  Uname: Linux 3.8.0-12-generic x86_64
  ApportVersion: 2.9.1-0ubuntu1
  Architecture: amd64
  Date: Sat Mar 16 20:00:30 2013
  ExecutablePath: /usr/lib/indicator-session/gtk-logout-helper
  InstallationDate: Installed on 2013-03-12 (3 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MarkForUpload: True
  ProcCmdline: /usr/lib/indicator-session/gtk-logout-helper --restart
  ProcEnviron:
   SHELL=/bin/false
   XDG_RUNTIME_DIR=<set>
   PATH=(custom, no user)
   LANG=en_US.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x7fc2593bf8ca <vfprintf+154>:	callq  0x7fc259409b30 <strchrnul>
   PC (0x7fc2593bf8ca) ok
   source "0x7fc259409b30" (0x7fc259409b30) ok
   destination "(%rsp)" (0x7fff96492000) not located in a known VMA region (needed writable region)!
   Stack memory exhausted (SP below stack segment)
  SegvReason: writing unknown VMA
  Signal: 11
  SourcePackage: indicator-session
  StacktraceTop:
   vfprintf () from /lib/x86_64-linux-gnu/libc.so.6
   __vasprintf_chk () from /lib/x86_64-linux-gnu/libc.so.6
   g_vasprintf () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   g_strdup_vprintf () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   g_strdup_printf () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  Title: gtk-logout-helper crashed with SIGSEGV in vfprintf()
  UpgradeStatus: Upgraded to raring on 2013-03-13 (2 days ago)
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