unity-control-center crashed with SIGSEGV in gnome_bg_slide_show_load()

[Joseph Wakeling]

Control Centre froze and then crashed after opening the "Appearance" settings.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: unity-control-center 14.04.3+14.04.20140305.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-16.36-generic 3.13.5
Uname: Linux 3.13.0-16-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Mar 8 23:57:03 2014
ExecutablePath: /usr/bin/unity-control-center
InstallationDate: Installed on 2013-12-15 (83 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20131214)
ProcCmdline: unity-control-center
SegvAnalysis:
 Segfault happened at: 0x7f7576c14139 <_int_malloc+2089>: cmp 0x18(%rax),%r12
 PC (0x7f7576c14139) ok
 source "0x18(%rax)" (0x1020201021a) not located in a known VMA region (needed readable region)!
 destination "%r12" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity-control-center
StacktraceTop:
 _int_malloc (av=0x7f7576f52760 <main_arena>, bytes=184) at malloc.c:3700
 __GI___libc_malloc (bytes=184) at malloc.c:2891
 g_malloc () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_markup_parse_context_new () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/libgnome-desktop-3.so.7
Title: unity-control-center crashed with SIGSEGV in _int_malloc()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
usr_lib_unity-control-center:
 activity-log-manager 0.9.7-0ubuntu10
 deja-dup 29.5-0ubuntu2
 gnome-control-center 1:3.6.3-0ubuntu53
 gnome-control-center-unity 1.3+14.04.20140117-0ubuntu1

[Apport retracing service (apport)]

StacktraceTop:
 _int_malloc (av=0x7f7576f52760 <main_arena>, bytes=184) at malloc.c:3700
 __GI___libc_malloc (bytes=184) at malloc.c:2891
 g_malloc (n_bytes=n_bytes@entry=184) at /build/buildd/glib2.0-2.39.91/./glib/gmem.c:97
 g_markup_parse_context_new (parser=parser@entry=0x7fff3ca22ae0, flags=flags@entry=(unknown: 0), user_data=user_data@entry=0x2da0bf0, user_data_dnotify=user_data_dnotify@entry=0x0) at /build/buildd/glib2.0-2.39.91/./glib/gmarkup.c:228
 parse_file_contents (self=self@entry=0x2da0bf0, contents=0x2da6380 "\211PNG\r\n\032\n", len=19166, error=error@entry=0x0) at gnome-bg-slide-show.c:662

[Launchpad Janitor (janitor)]

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

[David (daharper)]

I get this after the following steps:

sudo add-apt-repository ppa:inizan-yannick/mono
sudo apt-get update
sudo apt-get dist-upgrade

libglib2.0-0 libglib2.0-0:i386 libglib2.0-bin libglib2.0-data

I accept the updates, then the problem happens.

This always happens, so it seems to be a conflict or problem with one of the 4 packages listed above.