cairo-dock crashed with SIGSEGV in _on_device_changed()

[Aaron Fried]

Fallback cairo-dock crashed in xubuntu 14.04

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: cairo-dock-core 3.3.99.beta1.2.really.3.3.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
Uname: Linux 3.13.0-23-generic i686
ApportVersion: 2.14.1-0ubuntu1
Architecture: i386
CurrentDesktop: XFCE
Date: Wed Apr 9 06:49:02 2014
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/cairo-dock
InstallationDate: Installed on 2014-04-08 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily i386 (20140408)
ProcCmdline: cairo-dock -A
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x805496a <_start+1106>: mov (%eax),%eax
 PC (0x0805496a) ok
 source "(%eax)" (0x00000049) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: cairo-dock
Stacktrace:
 #0 0x0805496a in _start ()
 No symbol table info available.
StacktraceTop: _start ()
Title: cairo-dock crashed with SIGSEGV in _start()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 _on_device_changed (pDevice=0x89fe700, data=0x0) at /build/buildd/cairo-dock-plug-ins-3.3.99.beta1.2.really.3.3.2/powermanager/src/powermanager-upower.c:191
 g_cclosure_marshal_VOID__VOIDv (closure=0x8b37470, return_value=0x0, instance=0x89fe700, args=0xbfe6a57c "", marshal_data=0x0, n_params=0, param_types=0x0) at /build/buildd/glib2.0-2.40.0/./gobject/gmarshal.c:115
 _g_closure_invoke_va (closure=closure@entry=0x8b37470, return_value=return_value@entry=0x0, instance=instance@entry=0x89fe700, args=args@entry=0xbfe6a57c "", n_params=0, param_types=0x0) at /build/buildd/glib2.0-2.40.0/./gobject/gclosure.c:831
 g_signal_emit_valist (instance=instance@entry=0x89fe700, signal_id=signal_id@entry=230, detail=detail@entry=0, var_args=var_args@entry=0xbfe6a57c "") at /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c:3215
 g_signal_emit (instance=instance@entry=0x89fe700, signal_id=230, detail=detail@entry=0) at /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c:3363

[Matthieu Baerts (matttbe)]

Thank you for this bug report! I'll have a look ASAP ;-)

[Matthieu Baerts (matttbe)]

@Aaron: what did you do just before the crash?
The crash is due to the PowerManager applet, when receiving a message from UPower notifying that a "device" (a battery) status has "changed". Did you modify the PowerManager applet? Or did you just (un)plug your battery?

[Aaron Fried (woodwork78)]

Thanks Matthieu. To be honest I can't remember. I believe I was in a Cairo-dock(gnome) session and was using compiz config. I'm pretty sure I made no changes to power source. I don't understand much about debugging but I figure crash reports can be useful to people that understand them better than I do. I haven't had a similar problem since, and because I don't remember exactly what I was doing I imagine it would be hard to diagnose.

[Matthieu Baerts (matttbe)]

> I figure crash reports can be useful to people that understand them better than I do.

Yes, they are important :-)
But here the problem seems a bit complex... If you are able to reproduce it, please add a new comment here ;-)