qmlscene crashed with SIGABRT in qt_message_fatal()

[Timo Jyrinki]

I'm filing another bug just in case there is a different/new trace here.

Backtraced on the device directly, from http://q-jenkins.ubuntu-ci:8080/job/trusty-touch-maguro-smoke-ubuntu-clock-app-autopilot/146/artifact/clientlogs/

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: qmlscene 5.0.2-6ubuntu5
Uname: Linux 3.0.0-3-maguro armv7l
Architecture: armhf
CurrentDesktop: Unity
Date: Thu Jan 23 06:52:09 2014
ExecutablePath: /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene
ExecutableTimestamp: 1386145664
ProcCmdline: /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene ./ubuntu-clock-app.qml
ProcCwd: /usr/share/click/preinstalled/com.ubuntu.clock/1.0.300
Signal: 6
SourcePackage: qtdeclarative-opensource-src
StacktraceTop:
 qt_message_fatal (context=..., message=...) at global/qlogging.cpp:868
 QMessageLogger::fatal (this=this@entry=0xbed520bc, msg=0x4321d964 "QUbuntu: Could not create application instance") at global/qlogging.cpp:356
 QUbuntuIntegration::QUbuntuIntegration (this=0x42e1a000, input_factory=0x1) at ../../../../../src/platforms/ubuntu/ubuntucommon/integration.cc:75
 QUbuntuMirIntegration::QUbuntuMirIntegration (this=0x398308) at ../../../../../../src/platforms/ubuntu/ubuntumir/ubuntumircommon/integration.cc:39
 QUbuntuMirClientIntegrationPlugin::create (this=<optimized out>, system=..., paramList=...) at ../../../../../../src/platforms/ubuntu/ubuntumir/ubuntumirclient/main.cc:41
UserGroups: adm autopilot cdrom dialout dip nopasswdlogin plugdev sudo tty video
_LogindSession: /user/32011.user/c1.session

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1269080, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.

[Michał Sawicz (saviq)]

"ApplicationManager REJECTED connection from app with pid 2921 as no desktop_file_hint specified"
 in unity8.log
somehow unity-mir and upstart didn't talk to each other about launched apps
so upstart didn't tell unity8/unity-mir that this app was launched, so it was rejected when it connected to Mir
we'd need to reproduce locally, any steps in particular?

[Timo Jyrinki (timo-jyrinki)]

It seems it happens on maguro only, and most of all with starting clock or calendar app. it's quite common: http://ci.ubuntu.com/smokeng/trusty/touch/maguro/156:20140131:20140115.1/6363/ubuntu-clock-app-autopilot/

[Timo Jyrinki (timo-jyrinki)]

Link related. Gerry had this to add
"there's possibly a more fundamental underlying issue (sometimes an app seems to crash on startup on maguro, which confused unity-mir) so let's be wary"

[Gerry Boland (gerboland)]

Possible solution: https://code.launchpad.net/~ricmm/unity-mir/catch-starting-failure/+merge/203920
That branch fixes case when an app crashes during startup which confuses unity-mir. However why app crashes is still unknown.

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity-mir - 0.2+14.04.20140211.1-0ubuntu1

---------------
unity-mir (0.2+14.04.20140211.1-0ubuntu1) trusty; urgency=low

  [ thomas-voss ]
  * Refactor Oom(Score)Adj to rely on process-cpp helper library.

  [ Ricardo Mendoza ]
  * Catch application crashes when Application status is still
    ::Starting. (LP: #1271879)

  [ Gerry Boland ]
  * Update README for cmake instructions
 -- Ubuntu daily release <email address hidden> Tue, 11 Feb 2014 17:45:17 +0000

[kevin gunn (kgunn72)]

seems to be still recently happening
this bug has been dup'd

https://bugs.launchpad.net/ubuntu/+source/qtubuntu/+bug/1365673

here's the recent reports of it happening
https://errors.ubuntu.com/problem/4618cad07e610ca3c59a3e07c582e963d4780359

[Chris Gagnon (chris.gagnon)]

logs for https://errors.ubuntu.com/oops/3c04129c-3429-11e4-8804-fa163e4ccdf2