[Partial Solved] accounts-daemon crashed with SIGSEGV in dbus_connection_send()

[daniel CURTIS]

Hi. There appeared some problems with 'accountsservice' -- a D-Bus interface for user account query and manipulation, that honestly have occurred day-to-day.

### PROBLEM DESCRIPTION:
========================
A few weeks ago after login as a normal user, 'accountsservice' (used for querying and manipulating user account informations) crashed. On the beginning it was a random incident. After a few days, 'accountsservice' crashed each time after every user logs on. I think, that's all what I can write, to try to describe this issue, because everything seems to be okay -- no system freezing or slowdowns, no problems after packages update/upgrade etc.

### DETAILED INFORMATIONS:
==========================
* ProblemType: Crash
* Uname: Linux 3.2.0-51-generic-pae i686
* Architecture: i386
* DistroRelease: Ubuntu 12.04 (Xubuntu 12.04 variant)
* Package: accountsservice 0.6.15-2ubuntu9.6
* ApportVersion: 2.0.1-0ubuntu17.4
* NonfreeKernelModules: nvidia
* Segfault happened at: 0xb76bb7c3: mov 0x10(%eax),%eax
* Executable Path (ProcCmdline): /usr/lib/accountsservice/accounts-daemon

Also '/var/log/apport.log' file contain some informations about this issue. Everything is in a attached log file.

,-----[ $ lsb_release -rd ]
| Description: Ubuntu 12.04.3 LTS
| Release: 12.04
`-----

### WHAT HAVE HAD AN IMPACT ON THIS ISSUE?
==========================================
I have no ideas, why it started to happen. Only one thing, which I've done for a few weeks before problems with 'accountsservice' was 'conky-all' install. Nothing more, nothing less -- no serious administrative tasks were performed (except e.g. kernel or programs updates via APT utility or UpdateManager, but it seems to be obvious).

### APPENDIX:
=============
I would like to notice, that this issue still occurs, after next point Xubuntu update -- from 12.04.2 to 12.04.3 version. So for now, kernel version is; 3.2.0-55-generic-pae. Anything related with this bug, when all of this started to happen, remains unchanged.
One more, important, thing to mention is that - in my case - 'accountsservices' crashed even after a fresh Xubuntu 12.04 install. For more info, please see comment #12.

Best regards.

[Launchpad Janitor (janitor)]

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

[robert (ekstraadresse3)]

I have got the same bug, I am using Xubuntu 12.04. Happens at every login.

[atos (raczatt)]

Same confirmed on Xubuntu 12.04.2 LTS, (3.2.0-51-generic #77-Ubuntu SMP) almost every day.

[daniel CURTIS (anoda)]

Hi Robert and Atos. Now, I also can confirm, that this crash happens on every login (Xubuntu 12.04 LTS).

Best regards.

[abiru (a1-abiru)]

I have got the same bug, I am using Ubuntu 12.04 LTS.
I have /var/crash/_usr_lib_accountsservice_accounts-daemon.0.crash

[pakopako (pakopako)]

I get these most of the time. I run the latest Xubuntu 12.04 updates.

[JStMartin (jrstmartin)]

I can confirm that if you DO NOT encrypt your home directory on installation this crash does not occur.

[Teemu Leisti (teemu-leisti)]

I have also occasionally gotten accounts-daemon-related crashes right after login, for several months now, on two machines that both run Xubuntu 12.04, and which I've kept up-to-date by always upgrading packages when prompted by the system.

Today, I started to look more closely into this, and googling for the Title of the crash brought me here (though in my case, the title is "accounts-daemon crashed with sigsegv in dbus_connection_unref()", not "..._send()". The "internal error" dialog gives this information (I'm not reporting all fields, because you can't copy-paste from error dialog, which, by the way, is a usability problem -- I've marked the contents of those fields as "..."):

ExecutablePath
    /usr/lib/accountsservice/accounts-daemon

Package
    accountsservice 0.6.15-2ubuntu9.6

ProblemType
    Crash

Title
    accounts-daemon crashed with sigsegv in dbus_connection_unref()

ApportVersion
    2.0.1-0ubuntu17.4

Architecture
    amd64

CoreDump
    (binary data)

Date
    Sat Sep 7 12:28:11 2013

Dependencies
    ...

Disassembly
    ...

DistroRelease
    Ubuntu 12.04

InstallationMedia
    Xubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)

MarkForUpload
    True

NonfreeKernelModules
    nvidia

PackageArchitecture
    amd64

ProcCmdline
    /usr/lib/accountsservice/accounts-daemon

ProcEnviron
    < empty >

ProcMaps
    ...

ProcStatus
    ...

ProcVersionSignature
    Ubuntu 3.2.0-52.78-generic 3.2.48

Registers
    ...

SegvAnalysis
    Segfault happened at: 0x7fcd13d6fc06 <dbus_connection_unref+38>: cmp %edx,0x104(%rdi)
    PC (0x7fcd13d6fc06) ok
    source "%edx" ok
    destination "0x104(%rdi)" (0x656e6e6f6360216a) not located in a known VMA region (needed writable region)!

SegvReason
    writing unknown VMA

Signal
    11

SourcePackage
    accountsservice

Stacktrace
    ...

StacktraceAddressSignature
    ...

StacktraceTop
    ...

Tags
    precise

ThreadStacktrace
    ...

Uname
    Linux 3.2.0-52-generic x86_64

UnreportableReason
    You have some obsolete package versions installed. Please upgrade the following packages and check if the problem still occurs:
    initramfs-tools, initramfs-tools-bin

UpgradeStatus
    Upgraded to precise on 2012-04-26 (498 days ago)

UserGroups
    < empty >

[daniel CURTIS (anoda)]

Hi. I have to inform/notice, that 'accounts-daemon' (accountsservice 0.6.15-2ubuntu9.6) crash still occurs, even in a new Xubuntu update - 12.04.3 with 3.2.0-53 Linux kernel.

Best regards.

[Teemu Leisti (teemu-leisti)]

I also just booted with the new kernel version, 3.2.0-53, and got the same crash again -- though in my case, the title of the error is still "accounts-daemon crashed with sigsegv in dbus_connection_unref()", not "..._send()".

[daniel CURTIS (anoda)]

Hi. I have something really important to report; today, after a fresh Xubuntu 12.04.3 LTS installation and after very first login I noticed a warning message about application crash. I was pretty surprised, because once again it was about 'accounts-daemon' and crash title looked this way;

,-----[ CRASH TITLE: ]
| accounts-daemon crashed with SIGSEGV in malloc()
`-----

It's strange. Newly system installed, first login and... crash. Something happens with Xubuntu 12.04 and 'accountsservice/accounts-daemon' application.

Best regards.

[Alessio Treglia (quadrispro)]

Looks fixed on Raring.

[daniel CURTIS (anoda)]

Hi Mr Treglia. That's good, but what about Precise 12.04.3? There still is the same warning after user login. Over and over again it's (it's worth to notice, that many of reported issues - reported by users - are related to Xubuntu 12.04).

Best regards.

[Launchpad Janitor (janitor)]

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

[Benji (benjim)]

Same issue here, accountsservice crashed with SIGSEGV in dbus_connection_send() right after logging in.

[robert (ekstraadresse3)]

Now I get the "....crashed in unref" as well.

[Roalt (8-launchpad-net-roalt-com)]

I'm running also 12.04.3 LTS with the latest updates:

lsb_release -rd
Description: Ubuntu 12.04.3 LTS
Release: 12.04

I also have an encrypted home directory and experience the same problems. I'm not sure how serious this bug is, other than that it's annoying to click away the windows that say 'Ubuntu has experienced an internal error'.

[daniel CURTIS (anoda)]

Hi Roalt. True, it is very frustrating to click on a window with notices about this crash after every login. I also have an encrypted home partition, but if 'accountsservice'; "provides a set of D-Bus interfaces for querying and manipulating user account information (...) based on the useradd, usermod and userdel commands" in my opinion it should/could have an impact on a moments when we or installed applications adding new user etc. But it is only my opinion.

Anyway, definitely there is some problem. And it seems to growing on every weeks...

Best regards.

[Enrique Cobas (enrique-cobas)]

I am now getting this error daily, on Ubuntu 12.04.3 LTS with encrypted home directories.
It actually began after I installed a second Linux distro alongside, which replaced GRUB2 with GRUB. I restored GRUB2 and began reguarly getting this error on log-in
"accounts-daemon crashed with SIGSEGV in dbus_message_unref()"
"destination... not located in a known VMA region (needed writable region)!"

[GTriderXC (gtriderxc)]

I have the same problem on 5 different mashines. Every day, sometimes a few times during one login session(every few hours). 12.04+GNOMEclassic

[daniel CURTIS (anoda)]

Hello Enrique and GTrider. Thanks for notice about this crash. Something is happening with a 'account-service' package in 12.04 LTS series. Since I'd reported this bug, I have exactly the same problem after every login. Each day.

Best regards and one more time thank you both of you.

[psil0cybin (psil0cybin)]

This also affects me, I would love a fix for this. I am using Xubuntu 12.04 LTS with an encrypted home directory.

3.2.0-58-generic #88-Ubuntu SMP Tue Dec 3 17:37:58 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

What else can I do in order to help? What other information can I provide.
Thanks in advance

[psil0cybin (psil0cybin)]

Does this fix work on Xubuntu 12.04 LTS? I do not think this problem is fixed as of yet, perhaps I am wrong..

[daniel CURTIS (anoda)]

Hi psil0. It seems, that this problem is not resolved/fixed in Xubuntu 12.04.4 LTS - still there is a notice about 'accountservice' crash.

[Ralph Navarro (ralph-navarrocomputing)]

I am getting this crash on all of my systems: Ubuntu 12.04.4 LTS. Most times, I send the crash report to Ubuntu. They must be getting hundreds of these reports a day!

Why have the feature to report crashes if the reports are just ignored?

Why is Ubuntu ignoring this? has anyone from Ubuntu read these posts in the past 9 months?

[daniel CURTIS (anoda)]

Hi all. Yes, it's so frustrating, that this problem/crash happening for a long time, without any reaction. I mean without any update for a Precise. It seems, that this issue is not so important from a Developers points of view. In fact, it is not a security or stability matter, right?

Best regards.

[daniel CURTIS (anoda)]

Hello, 'accounts-daemon' crashing problem, is still occurring on 12.04 LTS Release.

Best regards.

[daniel CURTIS (anoda)]

Hello. It seems, that this problem still is not fixed in 12.04 LTS Release (e.g. Xubuntu: yes, I know it has EoL status). `accountsservice` crashing every time after every user logs in. But it seems, that "solution" is to disable `apport` via '/etc/default/apport' file. It's pretty simple:

1) edit apport file;
$ sudo leafpad /etc/default/apport

2) change 'enabled=1' option to 'enabled=0'

3) save and exit.

That's all. After system restart etc., and user login, `accountsservice` crash does not occur. As I already mentioned: Xubuntu 12.04 LTS is EoL and it seems that this issue is fixed in Ubuntu (see above table with 'Affects', 'Status', 'Importance' etc. rows).

Best regards.

[Steve Langasek (vorlon)]

The Precise Pangolin has reached end of life, so this bug will not be fixed for that release