[background]: gnome-settings-daemon crashed with SIGSEGV in cairo_surface_set_user_data()

[padarjohn]

After applying the most recent updates (on 10/13/13) I've suddenly started experiencing segfaults in libcairo. I have to reset X in order to fully recover.

It appears to be random, but I suspect it's related to updating the background image. I have a script that runs xplanet every 5 minutes to generate a new image, and then runs 'gconftool -t str -s /desktop/gnome/background/picture_filename pic' to update the screen background.

Nautilus and gnome-settings both crash at the same time:

[216786.273050] nautilus[16216]: segfault at 10 ip b6f72151 sp bfdc9318 error 4 in libcairo.so.2.11000.2[b6f27000+c7000]
[217084.903495] gnome-settings-[16173]: segfault at 10 ip b6b5e151 sp bfdceab8 error 4 in libcairo.so.2.11000.2[b6b13000+c7000]

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: gnome-settings-daemon 3.4.2-0ubuntu0.6.3
ProcVersionSignature: Ubuntu 3.2.0-54.82-generic-pae 3.2.50
Uname: Linux 3.2.0-54-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.5
Architecture: i386
Date: Tue Oct 15 12:36:10 2013
ExecutablePath: /usr/lib/gnome-settings-daemon/gnome-settings-daemon
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MarkForUpload: True
ProcCmdline: /usr/lib/gnome-settings-daemon/gnome-settings-daemon
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/tcsh
SegvAnalysis:
 Segfault happened at: 0xb6b5e151 <cairo_surface_set_user_data+17>: cmpl $0xffffffff,0x10(%eax)
 PC (0xb6b5e151) ok
 source "$0xffffffff" ok
 destination "0x10(%eax)" (0x00000010) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: gnome-settings-daemon
StacktraceTop:
 cairo_surface_set_user_data () from /usr/lib/i386-linux-gnu/libcairo.so.2
 gnome_bg_create_surface () from /usr/lib/libgnome-desktop-3.so.2
 ?? () from /usr/lib/gnome-settings-daemon-3.0/libbackground.so
 g_cclosure_marshal_VOID__VOIDv () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
Title: [background]: gnome-settings-daemon crashed with SIGSEGV in cairo_surface_set_user_data()
UpgradeStatus: Upgraded to precise on 2013-09-27 (18 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Stacktrace:
 #0 cairo_surface_set_user_data (surface=0x0, key=0xb7727684, user_data=0xb47082e0, destroy=0xb6bff050) at /build/buildd/cairo-1.10.2/src/cairo-surface.c:794
 No locals.
 #1 0xb770fb55 in ?? ()
 No symbol table info available.
StacktraceSource:
 #0 cairo_surface_set_user_data (surface=0x0, key=0xb7727684, user_data=0xb47082e0, destroy=0xb6bff050) at /build/buildd/cairo-1.10.2/src/cairo-surface.c:794
   [Error: /build/buildd/cairo-1.10.2/src/cairo-surface.c was not found in source tree]
 #1 0xb770fb55 in ?? ()
StacktraceTop:
 cairo_surface_set_user_data (surface=0x0, key=0xb7727684, user_data=0xb47082e0, destroy=0xb6bff050) at /build/buildd/cairo-1.10.2/src/cairo-surface.c:794
 ?? ()