empathy-auth-client crashed with SIGSEGV in magazine_chain_pop_head()

[Blair Chasteen]

This looks like its a duplicate of many including https://bugs.launchpad.net/bugs/806118 which had a fix released but might want to keep this open because its quantal alpha 3. Debug symbols should be included in my logs.

I am not sure why/how this happened, I was playing my Wii when system update notifier appeared on my screen and right after that is when the crash happened.

I'll attach valgrind.log for empathy-chat with this.

---
Blair Chasteen

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: empathy 3.5.90-0ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-12.12-generic 3.5.2
Uname: Linux 3.5.0-12-generic x86_64
ApportVersion: 2.5.1-0ubuntu2
Architecture: amd64
Date: Mon Aug 27 04:37:57 2012
ExecutablePath: /usr/lib/empathy/empathy-auth-client
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120814.1)
ProcCmdline: /usr/lib/empathy/empathy-auth-client
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7fabec8f9242 <g_slice_alloc+210>: mov 0x8(%rdx),%rbx
 PC (0x7fabec8f9242) ok
 source "0x8(%rdx)" (0x1bb078008) not located in a known VMA region (needed readable region)!
 destination "%rbx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: empathy
StacktraceTop:
 g_slice_alloc () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_list_prepend () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_object_newv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: empathy-auth-client crashed with SIGSEGV in g_slice_alloc()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 magazine_chain_pop_head (magazine_chunks=0x19c3550) at /build/buildd/glib2.0-2.33.10/./glib/gslice.c:528
 thread_memory_magazine1_alloc (ix=<optimized out>, tmem=<optimized out>) at /build/buildd/glib2.0-2.33.10/./glib/gslice.c:835
 g_slice_alloc (mem_size=mem_size@entry=24) at /build/buildd/glib2.0-2.33.10/./glib/gslice.c:994
 g_list_prepend (list=0x1bb075f, data=0x1a39c00) at /build/buildd/glib2.0-2.33.10/./glib/glist.c:275
 g_object_class_install_property (class=0x10, property_id=1, pspec=0x1bb078000) at /build/buildd/glib2.0-2.33.10/./gobject/gobject.c:538

[Blair Chasteen (darkstormyrain)]

forgot to add this

-rw-rw-r-- 1 darkrain darkrain 69299 Aug 27 05:10 valgrind-logs-empathy-chat.tar.gz
darkrain@Rain:~$ dmesg |tail
[ 3378.888350] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3378.888357] usb 5-1: Product: CanoScan
[ 3378.888364] usb 5-1: Manufacturer: Canon
[ 3380.144143] usb 5-1: USB disconnect, device number 2
[ 3392.560080] usb 5-1: new full-speed USB device number 3 using uhci_hcd
[ 3392.732092] usb 5-1: New USB device found, idVendor=04a9, idProduct=220e
[ 3392.732098] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3392.732102] usb 5-1: Product: CanoScan
[ 3392.732105] usb 5-1: Manufacturer: Canon
[21235.542989] empathy-auth-cl[8243]: segfault at 1bb078008 ip 00007fabec8f9242 sp 00007fff12ccc450 error 4 in libglib-2.0.so.0.3310.0[7fabec897000+f4000]
darkrain@Rain:~$

Looks like glib2 might be part of the problem
---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

[Bilal Shahid (s9iper1)]

Thanks for taking time in filing the bug to make ubuntu better.
1) can you reproduce this bug ?
2) if so than please define the steps to reproduce it ?
 check that your system must be up to date

[Blair Chasteen (darkstormyrain)]

No I cannot, at least not intentionally. It happened one other time shortly after Like I mentioned my system was idol while I was pre occupied with other things.

It looks like there was an update to glib2 since then (which may or may not had anything to do with it) and that has not happened since. I do check for updates every breakfast lunch and dinner. Always up to date :)

However since then I have had other authorization issues affecting empathy and the desktop as I described in this report I just filed

https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1048192

[Launchpad Janitor (janitor)]

[Expired for empathy (Ubuntu) because there has been no activity for 60 days.]