unity-panel-service crashed with SIGSEGV in strrchr()

[leugim]

happens randomly

ProblemType: Crash
DistroRelease: Ubuntu 14.10
Package: unity-services 7.3.0+14.10.20140619-0ubuntu1
ProcVersionSignature: Ubuntu 3.15.0-6.11-generic 3.15.0
Uname: Linux 3.15.0-6-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.3-0ubuntu2
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,mousepoll,imgpng,grid,snap,gnomecompat,place,move,wall,resize,regex,vpswitch,commands,unitymtgrabhandles,animation,session,expo,ezoom,workarounds,fade,scale,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CrashCounter: 1
CurrentDesktop: Unity
Date: Sun Jun 22 14:25:58 2014
DistUpgraded: Fresh install
DistroCodename: utopic
DistroVariant: ubuntu
ExecutablePath: /usr/lib/unity/unity-panel-service
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M] [1002:68c1] (prog-if 00 [VGA controller])
   Subsystem: Sony Corporation Mobility Radeon HD 5650 [104d:9071]
InstallationDate: Installed on 2014-06-01 (20 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140510)
Lsusb:
 Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 003: ID 0c45:6409 Microdia Webcam
 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Sony Corporation VPCEB2C5E
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.15.0-6-generic root=UUID=c72ec9e3-fe9d-4672-8784-3117789d48f3 ro persistent quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7facdfcfe625 <strrchr+37>: movdqu (%rdi),%xmm0
 PC (0x7facdfcfe625) ok
 source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%xmm0" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 strrchr () at ../sysdeps/x86_64/strrchr.S:32
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
Title: unity-panel-service crashed with SIGSEGV in strrchr()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 07/20/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: R0300Y8
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR0300Y8:bd07/20/2010:svnSonyCorporation:pnVPCEB2C5E:pvrC605XTV0:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VPCEB2C5E
dmi.product.version: C605XTV0
dmi.sys.vendor: Sony Corporation
version.compiz: compiz 1:0.9.11+14.10.20140606-0ubuntu2
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.54-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu5
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sat Jun 21 05:15:14 2014
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs: Output HDMI-0 LVDS VGA-0
xserver.version: 2:1.15.1-0ubuntu5
xserver.video_driver: radeon

[Apport retracing service (apport)]

StacktraceTop:
 strrchr () at ../sysdeps/x86_64/strrchr.S:32
 _gtk_menu_tracker_item_new (observable=0x1d85d80, model=model@entry=0x1db1b80, item_index=item_index@entry=5, action_namespace=0x1e03bb0 "indicator.thunderbird", is_separator=is_separator@entry=0) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmenutrackeritem.c:524
 gtk_menu_tracker_add_items (tracker=tracker@entry=0x1d89390, change_point=change_point@entry=0x2431d88, offset=offset@entry=8, model=model@entry=0x1db1b80, position=position@entry=5, n_items=0, n_items@entry=1, section=0x1d91060) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmenutracker.c:342
 gtk_menu_tracker_model_changed (model=0x1db1b80, position=5, removed=0, added=1, user_data=0x1d89390) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmenutracker.c:445
 ffi_call_unix64 () at ../src/x86/unix64.S:76

[leugim (miguelpereira)]

I think it has something to do with Thunderbird (when it receives new emails and/or news feeds).

[Launchpad Janitor (janitor)]

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