[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Alexander-Shariff-Vetter]

now i forgot how to submit bugs

another thing is o found some new bugs in 17.04 Zesty Zapus

1.unable to use Unity 8

2. Software center is missing

3. technically everything is missing in unity 8 that was in unity 7

4. Every time i use software updater i get this error "Repository
failed" i can't remember what the error was.

5. This does not seem the correct link for bug reporting but my memory
sucks.

6.in details it says i'm running 16.10 but if i go into terminal and
type "lsb_release -a" is says i'm using 17.04.

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

** Changed in: qtbase-opensource-src (Ubuntu)
   Importance: Undecided => Critical

** Changed in: canonical-devices-system-image
   Importance: Undecided => Critical

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

** Changed in: canonical-devices-system-image
 Assignee: (unassigned) => Zoltan Balogh (bzoltan)

** Changed in: canonical-devices-system-image
   Status: Confirmed => Fix Committed

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Launchpad Bug Tracker]

This bug was fixed in the package qtbase-opensource-src - 5.6.1+dfsg-
3ubuntu6~4

---
qtbase-opensource-src (5.6.1+dfsg-3ubuntu6~4) yakkety; urgency=medium

  [ Dmitry Shachnev ]
  * Mark allow_native_menubar.diff as applied upstream.
  * debian/patches/dbustray_cleanup_notifier.diff:
- Fix a bug in QSystemTrayIcon code where the notifier was not cleaned
  up and the callback was called multiple times.

  [ Timo Jyrinki ]
  * debian/patches/Fix-some-QtDBus-crashes-during-application-destructi.patch
debian/patches/Merge-the-QDBusMetaType-s-custom-information-to-QDBu.patch
debian/patches/Make-the-bearer-QFactoryLoader-a-member-variable-not.patch:
- More D-Bus fixes (LP: #1618590)

 -- Timo Jyrinki   Wed, 28 Sep 2016 18:14:12
+

** Changed in: qtbase-opensource-src (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

Marcus confirmed the new patch also fixes the issue! I will start
landing ticket #2015 now instead. Again autopkgtests will unfortunately
take 1-2 days.

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

Unfortunately upstream won't be merging the third patch to 5.6 series,
so it's only in Qt 5.8. It hides the problem instead of fixing the
problem, which is that there is a plugin that doesn't unregister its
objects before unloading.

I've prepared another silo https://bileto.ubuntu.com/#/ticket/2015 with
alternative third patch that _is_ being considered for 5.6:
https://codereview.qt-project.org/#/c/172173/

Let's test it and if it fixes the problem too, land that one instead.

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Ubuntu QA Website]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1618590

** Tags added: iso-testing

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Marcus Tomlinson]

** Changed in: canonical-devices-system-image
   Status: New => Confirmed

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

I've pushed now also updated gles packages to the PPA. After that, I'll
start the autopkgtests which will take 1-2 days to finish.

I've also asked if upstream could consider the third patch for their 5.6
LTS series, as it's not currently there and it would always be better if
they also carry the patch.

** Changed in: qtbase-opensource-src (Ubuntu)
   Status: Incomplete => In Progress

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Marcus Tomlinson]

Yes! I've just confirmed that the packages in
https://bileto.ubuntu.com/#/ticket/1960 fix the issue! Thanks Timo!

** Changed in: unity-scope-click (Ubuntu)
   Status: Confirmed => Invalid

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

https://codereview.qt-project.org/#/c/140750/ (Stop unloading plugins in
QPluginLoader and QFactoryLoader) mentioned in a comment was still
missing from our build.

It's now building (ubuntu6~2 and ubuntu6~xenialoverlay1~2). Let's test
all three patches once the builds are completed.

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Marcus Tomlinson]

According to https://bugreports.qt.io/browse/QTBUG-52988, those patches
worked when applied on top of Qt5.7, I wonder if we're missing something
important between 5.6 -> 5.7

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Launchpad Bug Tracker]

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

** Changed in: unity-scope-click (Ubuntu)
   Status: New => Confirmed

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

** Also affects: canonical-devices-system-image
   Importance: Undecided
   Status: New

** Changed in: canonical-devices-system-image
Milestone: None => x1

** Changed in: unity-scope-click (Ubuntu)
 Assignee: (unassigned) => Rodney Dawes (dobey)

** Changed in: qtbase-opensource-src (Ubuntu)
 Assignee: (unassigned) => Timo Jyrinki (timo-jyrinki)

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

** Tags added: qt5.6

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

Ok then :( If you also double-chcecked your libqt5core5 (etc) are
version 5.6.1+dfsg-3ubuntu6~1

For qtbase, we can continue to follow
http://code.qt.io/cgit/qt/qtbase.git/log/src/dbus?h=5.6 and
https://codereview.qt-
project.org/#/q/owner:%22Thiago+Macieira%22+status:open,n,z for any
patches to try, but otherwise we should try to workaround the issue.

If you can describe the remaining problems or even produce an easy test
case for upstream, please file a bug at https://bugreports.qt.io/ for
Thiago to see.

Gustavo Boiko has been hard at reworking telepathy-qt to work with the
new QDBus behaviors in 5.6, here are references to what kind of changes
he has needed to do:

http://launchpadlibrarian.net/280893997/telepathy-qt_0.9.6.1-6ubuntu1_0.9.6.1-7ubuntu2.diff.gz
http://launchpadlibrarian.net/284273846/telepathy-qt_0.9.6.1-7ubuntu2_0.9.6.1-9ubuntu6.diff.gz

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

** Also affects: unity-scope-click (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: qtbase-opensource-src (Ubuntu)
   Status: Confirmed => Incomplete

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Rodney Dawes]

Sorry, no, I didn't build qtbase from source to test.

I've added the silo, but I still get a crash with this same stack trace
when the scope is destroyed. I guess further fixes in Qt are required
beyond these changes perhaps.

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

Please test from https://requests.ci-train.ubuntu.com/#/ticket/1960 and
report back - builds are complete now.

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Title:
  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

Was the fix tested already with a qtbase compilation?

Both it and its pre-requirement https://codereview.qt-
project.org/#/c/157488 are not merged in upstream, so would need to be
merged first. There may be some trouble they are causing since they are
not yet merged.

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Title:
  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Rodney Dawes]

This appears to be a crash inside Qt itself, and only occurs with 5.6+,
apparently due to QDBus changing to use threading instead of the event
loop, for asynchronous operations. There seems to be some fixes in Qt
Code Review that should theoretically fix this. It would be nice if we
could test these and get them into our release of Qt. I'm afraid there
won't be any way to work around this crash in the scope or ubuntu-
download-manager (we're keeping a u-d-m singleton object around, which
is destroyed on exit) code itself.

** Package changed: unity-scope-click (Ubuntu) => qtbase-opensource-src
(Ubuntu)

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Rodney Dawes]

Sorry, the fix in Qt's code review system is at https://codereview.qt-
project.org/#/c/161056/

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Ken VanDine]

I suspect this might be a bug in qtdbus 5.6.

https://codereview.qt-project.org/#/c/161056/

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Title:
  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Timo Jyrinki]

I'm getting this one too.

** Changed in: unity-scope-click (Ubuntu)
   Status: Invalid => Confirmed

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Alexander-Shariff-Vetter]

every time I log out of the unity 8 environment and log into unity 7
environment a bunch of random crashes pop up

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  scoperunner crashed with SIGSEGV in QObject::disconnect()

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[Bug 1618590] Re: scoperunner crashed with SIGSEGV in QObject::disconnect()

[Emanuele Antonio Faraone]

The system is up to date, I still encounter the crash.

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