Ubuntu
unity8 package

unity8 crashed with SIGSEGV in QCoreApplication::postEvent()

Bug #1240408 reported by Omer Akram on 2013-10-16

This bug affects 8 people

Affects		Status	Importance	Assigned to	Milestone
	unity8 (Ubuntu)	Fix Released	High	Michał Sawicz

Bug Description

Unity8 crashes for me whenever I try to open a preview of a song in the music scope.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: unity8 7.83+13.10.20131015.4-0ubuntu1
Uname: Linux 3.4.0-3-mako armv7l
ApportVersion: 2.12.5-0ubuntu2
Architecture: armhf
Date: Wed Oct 16 13:14:19 2013
ExecutablePath: /usr/bin/unity8
ExecutableTimestamp: 1381836266
InstallationDate: Installed on 2013-10-15 (0 days ago)
InstallationMedia: Ubuntu 13.10 - armhf (20131015.2)
MarkForUpload: True
ProcCmdline: unity8
ProcCwd: /home/phablet
Signal: 11
SourcePackage: unity8
StacktraceTop:
QCoreApplication::postEvent(QObject*, QEvent*, int) () from /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5
?? () from /usr/lib/arm-linux-gnueabihf/libQt5Quick.so.5
?? () from /usr/lib/arm-linux-gnueabihf/libQt5Quick.so.5
Title: unity8 crashed with SIGSEGV in QCoreApplication::postEvent()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm autopilot cdrom dialout dip nopasswdlogin plugdev sudo tty video

Tags:

Related branches

lp:~jpakkane/unity8/threadfix

Merged into lp:unity8 at revision 731

Albert Astals Cid (community): Approve on 2014-02-20

PS Jenkins bot (community): Approve (continuous-integration) on 2014-02-18

Michal Hruby (community): Approve on 2014-02-18

lp:~unity-team/unity8/new-scopes

Rejected for merging into lp:unity8

PS Jenkins bot (community): Needs Fixing (continuous-integration) on 2014-02-04

lp:ubuntu/trusty-proposed/unity8

Revision history for this message

Omer Akram (om26er) wrote on 2013-10-16:

Dependencies.txt Edit (9.9 KiB, text/plain; charset="utf-8")
Disassembly.txt Edit (1.5 KiB, text/plain; charset="utf-8")
LocalLibraries.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (106 bytes, text/plain; charset="utf-8")
ProcMaps.txt Edit (93.9 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (838 bytes, text/plain; charset="utf-8")
Registers.txt Edit (642 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (443 bytes, text/plain; charset="utf-8")
SystemImageInfo.txt Edit (171 bytes, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (83.8 KiB, text/plain; charset="utf-8")

information type:

Private → Public

Revision history for this message

Apport retracing service (apport) wrote on 2013-10-16:

StacktraceTop:
QCoreApplication::postEvent(QObject*, QEvent*, int) () at ../../include/QtCore/../../src/corelib/tools/qvector.h:92
QQuickPixmapReader::processJob(QQuickPixmapReply*, QUrl const&, QSize const&) () at util/qquickpixmapcache.cpp:543
QQuickPixmapReader::processJobs() () at util/qquickpixmapcache.cpp:506
QQuickPixmapReaderThreadObject::event(QEvent*) () at util/qquickpixmapcache.cpp:462
QCoreApplication::notify(QObject*, QEvent*) () at kernel/qcoreapplication.cpp:829

Revision history for this message

Apport retracing service (apport) wrote on 2013-10-16: Stacktrace.txt

Stacktrace.txt Edit (33.6 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2013-10-16: StacktraceSource.txt

StacktraceSource.txt Edit (3.0 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2013-10-16: ThreadStacktrace.txt

ThreadStacktrace.txt Edit (166.2 KiB, text/plain)

Changed in unity8 (Ubuntu):
importance:	Undecided → Medium
tags:	removed: need-armhf-retrace

Revision history for this message

Launchpad Janitor (janitor) wrote on 2013-10-23:

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

Changed in unity8 (Ubuntu):
status:	New → Confirmed

Revision history for this message

Michał Sawicz (saviq) wrote on 2013-10-23:

This also happens when you expand the music category in home scope. Looking at the trace this looks like the image provider for album art is failing.

Changed in unity8:
status:	New → Triaged

Revision history for this message

Michał Sawicz (saviq) wrote on 2013-10-23:

Or the pixmap cache, maybe...

Changed in unity8:
importance:	Undecided → High
assignee:	nobody → Albert Astals Cid (aacid)

Revision history for this message

Albert Astals Cid (aacid) wrote on 2013-10-31:

Neither me nor mzanetti can reproduce the crash, can anyone of the 3 people that say they have this bug give more exact reproduction steps? Or maybe pass onto us the .mp3 file they are using to repro the crash?

Changed in unity8:
status:	Triaged → Incomplete

Revision history for this message

Michał Sawicz (saviq) wrote on 2013-11-21:

#10

Suspected duplicate: bug #1253483. I'll try and spend some time ASAP to find ways to reproduce.

FWIW I suspect whenever autopilot tests fail with "couldn't find process 1234" or similar is the same issue - unity8 crashed before autopilot managed to connect to it.

Revision history for this message

taiebot65 (dedreuil) wrote on 2014-01-10:

#11

it looks like it is music whith no thumbnailing do not know if its a different crash but wuith r119 i just need to go through the music in home open a file with no thumbnail through the dash and i obtain a crash.
attached a .mp3 fail with no thumbnail

Revision history for this message

taiebot65 (dedreuil) wrote on 2014-01-10:

#12

03 - Schubert, Franz - Streichquartett Nr 14 d-moll D810 'Der Tod und das Mädchen' - 3 Scherzo Allegro molto.mp3 Edit (4.9 MiB, audio/mpeg)

Revision history for this message

Alan Pope 🍺🐧🐱 🦄 (popey) wrote on 2014-01-10:

#13

device-2014-01-10-090903.png Edit (604.4 KiB, image/png)

On #121 on mako I removed all my music and added that single track from #12 and get no crash previewing the file. See screenshot.

Revision history for this message

taiebot65 (dedreuil) wrote on 2014-01-11:

#14

Ok i have also removed all my music and kept only this file and rebooted my device. i managed to get the crash if you click multiple times at a quick speed just below the icon on the text in the home page this will open and close the dash quite fast. and after few attempts the crash occurs.

Revision history for this message

taiebot65 (dedreuil) wrote on 2014-01-23:

#15

It still crashing with revision 144 on mako doing as per post #144

Michał Sawicz (saviq) on 2014-02-02

Changed in unity8:
status:	Incomplete → Triaged

Michał Sawicz (saviq) on 2014-02-20

tags:

added: mwcdemo2014

Michał Sawicz (saviq) on 2014-02-20

Changed in unity8:
status:	Triaged → In Progress
Changed in unity8 (Ubuntu):
status:	Confirmed → In Progress
Changed in unity8:
assignee:	Albert Astals Cid (aacid) → Michał Sawicz (saviq)

Revision history for this message

Launchpad Janitor (janitor) wrote on 2014-02-21:

#16

This bug was fixed in the package unity8 - 7.84+14.04.20140221-0ubuntu1

---------------
unity8 (7.84+14.04.20140221-0ubuntu1) trusty; urgency=low

  [ Michał Sawicz ]
  * Add card background support.
  * Increase the sidestage threshold.

  [ Jussi Pakkanen ]
  * Move downloads to their own threads so they don't muck about with
    the parent thread's event loop. (LP: #1240408)
-- Ubuntu daily release <email address hidden> Fri, 21 Feb 2014 09:06:04 +0000

Changed in unity8 (Ubuntu):
status:	In Progress → Fix Released

Michał Sawicz (saviq) on 2014-02-21

Changed in unity8:
status:	In Progress → Fix Released

Michał Sawicz (saviq) on 2017-03-13

Changed in unity8 (Ubuntu):
assignee:	nobody → Michał Sawicz (saviq)
importance:	Medium → High
no longer affects:	unity8

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unity8 crashed with SIGSEGV in QCoreApplication::postEvent()

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unity8 package