Bug 374200

Summary:	Plasma crash at login
Product:	[Plasma] plasmashell	Reporter:	ae6b067b-6051-4019-a50d-fe16dd5092bb
Component:	general	Assignee:	David Edmundson <kde>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	bshah, notmart, plasma-bugs-null
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.8.4
Target Milestone:	1.0
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	last update

Description ae6b067b-6051-4019-a50d-fe16dd5092bb 2016-12-27 09:47:54 UTC

Application: plasmashell (5.8.4)

Qt Version: 5.7.1
Frameworks Version: 5.29.0
Operating System: Linux 4.4.39-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
- What I was doing when the application crashed:

Nothing special: I started my laptop, logged in. Plasma loaded. After it loaded, the crash-icon was visible in the system tray.

- Unusual behavior I noticed:

Loading took quite long. That is: longer than usual. This happens me about once in two times I log in, since the last update.
If I remember correctly, that update consisted of KDE frameworks 5.28 to 5.29, KDE app 16.08 to 16.12, and some other updates I forgot.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1889b68800 (LWP 922))]

Thread 7 (Thread 0x7f17cb6c7700 (LWP 1418)):
#0  0x00007f187e538694 in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007f187e53889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#2  0x00007f1883b9d2db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f1883b46d3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f1883969063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f188396dcf8 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f1882a7d454 in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f18832837df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f185fde7700 (LWP 1417)):
#0  0x00007f1882a8310f in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f18893161f4 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f1889316239 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f1882a7d454 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f18832837df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f1869f71700 (LWP 1416)):
#0  0x00007f187e538104 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#1  0x00007f187e538724 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f187e53889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f1883b9d2db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f1883b46d3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f1883969063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f1886ccbe75 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f188396dcf8 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f1882a7d454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f18832837df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f186b9d1700 (LWP 1170)):
#0  0x00007f1883b9ca86 in  () at /usr/lib/libQt5Core.so.5
#1  0x00007f187e537c89 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f187e5386ab in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f187e53889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f1883b9d2db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f1883b46d3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f1883969063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f1886ccbe75 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f188396dcf8 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f1882a7d454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f18832837df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f18714a9700 (LWP 979)):
#0  0x00007f18832764ed in read () at /usr/lib/libc.so.6
#1  0x00007f187e57ca10 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f187e538235 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f187e538724 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f187e53889c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f1883b9d2db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f1883b46d3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f1883969063 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f18846e4de5 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007f188396dcf8 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f1882a7d454 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f18832837df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f18730da700 (LWP 932)):
#0  0x00007f188327a48d in poll () at /usr/lib/libc.so.6
#1  0x00007f188823c8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f188823e679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f1874e17789 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f188396dcf8 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f1882a7d454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f18832837df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f1889b68800 (LWP 922)):
[KCrash Handler]
#6  0x00007f1886c4f9c4 in QQmlIncubator::clear() () at /usr/lib/libQt5Qml.so.5
#7  0x00007f1886ceee08 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f1886cf15bb in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007f1886cf19e2 in  () at /usr/lib/libQt5Qml.so.5
#10 0x00007f1886cf30e8 in QQmlDelegateModel::_q_itemsRemoved(int, int) () at /usr/lib/libQt5Qml.so.5
#11 0x00007f1886d17175 in  () at /usr/lib/libQt5Qml.so.5
#12 0x00007f1886d178f8 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/libQt5Qml.so.5
#13 0x00007f1883b74264 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#14 0x00007f1883bebc74 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#15 0x00007f1883af04fb in QAbstractItemModel::endRemoveRows() () at /usr/lib/libQt5Core.so.5
#16 0x00007f1886cfb8ad in QQmlListModel::emitItemsRemoved(int, int) () at /usr/lib/libQt5Qml.so.5
#17 0x00007f1886d18b2d in  () at /usr/lib/libQt5Qml.so.5
#18 0x00007f1886d18d98 in QQmlListModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/libQt5Qml.so.5
#19 0x00007f1886c84a09 in  () at /usr/lib/libQt5Qml.so.5
#20 0x00007f1886c13270 in  () at /usr/lib/libQt5Qml.so.5
#21 0x00007f1886c138a9 in  () at /usr/lib/libQt5Qml.so.5
#22 0x00007f1886c14205 in QV4::QObjectMethod::callInternal(QV4::CallData*) const () at /usr/lib/libQt5Qml.so.5
#23 0x00007f1886c29911 in QV4::Runtime::callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () at /usr/lib/libQt5Qml.so.5
#24 0x00007f186895b53c in  ()
#25 0x00007ffeffe30364 in  ()
#26 0xffffffffffffffff in #27 0x00000000039c1190 in  ()
#28 0x0000000000000002 in  ()
#29 0x00000000039c1190 in  ()
#30 0xffffffffffffffff in #31 0x00007f1868f72408 in  ()
#32 0x00007f1868f72400 in  ()
#33 0x00007f1868f72370 in  ()
#34 0x00007f1886bc207b in  () at /usr/lib/libQt5Qml.so.5
#35 0x00007f1886c29363 in QV4::Runtime::callActivationProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () at /usr/lib/libQt5Qml.so.5
#36 0x00007f186895a503 in  ()
#37 0x00007f1868f72360 in  ()
#38 0x403d000000000000 in  ()
#39 0x0000000000000000 in  ()

Reported using DrKonqi

Comment 1 ae6b067b-6051-4019-a50d-fe16dd5092bb 2016-12-27 10:14:27 UTC

Created attachment 103015 [details]
last update

This file contains the pacman log of the last update. After it completed and a manual reboot, I got the plasma crashes.

Comment 2 ae6b067b-6051-4019-a50d-fe16dd5092bb 2016-12-27 11:00:45 UTC

For the record: I tried it again:

* Shut down my laptop with the shut down entry in krunner
* Waited till it was shut down
* Pressed power-on button
* Pressed enter when grub shows
* Waited till sddm showed up
* Entered my password
* Waited till plasma was loaded
* Discovered the crash-icon in the system tray

Comment 3 Marco Martin 2016-12-28 14:11:50 UTC


*** This bug has been marked as a duplicate of bug 342763 ***

Comment 4 ae6b067b-6051-4019-a50d-fe16dd5092bb 2016-12-30 09:27:14 UTC

Update 5.8.5 of plasma seems to fix it.

Comment 5 ae6b067b-6051-4019-a50d-fe16dd5092bb 2016-12-30 10:39:41 UTC

(In reply to thalesii from comment #4)
> Update 5.8.5 of plasma seems to fix it.

That is, right after the update and a reboot, it didn't crash. Next time after, it did.

Comment 6 ae6b067b-6051-4019-a50d-fe16dd5092bb 2016-12-30 11:18:16 UTC

(In reply to thalesii from comment #5)
> (In reply to thalesii from comment #4)
> > Update 5.8.5 of plasma seems to fix it.
> 
> That is, right after the update and a reboot, it didn't crash. Next time
> after, it did.

Did a few more reboots. No crashes. Indeed it seems something with the system tray or the task bar.

Comment 7 ae6b067b-6051-4019-a50d-fe16dd5092bb 2016-12-30 12:50:46 UTC

(In reply to thalesii from comment #6)
> (In reply to thalesii from comment #5)
> > (In reply to thalesii from comment #4)
> > > Update 5.8.5 of plasma seems to fix it.
> > 
> > That is, right after the update and a reboot, it didn't crash. Next time
> > after, it did.
> 
> Did a few more reboots. No crashes. Indeed it seems something with the
> system tray or the task bar.

I think so, because at the last crash, firefox auto-started at login.