Bug 385865

Summary:	Plasma crashed after switching activities using shortcut
Product:	[Plasma] plasmashell	Reporter:	Matheus Marques <martreus>
Component:	general	Assignee:	David Edmundson <kde>
Status:	RESOLVED FIXED
Severity:	crash	CC:	justin.zobel, plasma-bugs-null, weltqgel
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.11.0
Target Milestone:	1.0
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Matheus Marques 2017-10-17 14:44:47 UTC

Application: plasmashell (5.11.0)

Qt Version: 5.9.2
Frameworks Version: 5.39.0
Operating System: Linux 4.13.7-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
Fresh reboot. Tried to change activity using shortcut (meta + 2; meta + 3; for example). Plasma suddenly crashed and bug report option showed up. Plasma then starts working again.

- Unusual behavior I noticed:
Redshift makes weird colors, after the second crash, plasmashell won't load again on its own. I need to open console and load it.

- Custom settings of the application:
Lots of changes on shortcuts and widgets. I don't know what kind of info could be useful here. Any help would be appreciated.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9891fbb800 (LWP 2863))]

Thread 8 (Thread 0x7f97ba58f700 (LWP 3280)):
#0  0x00007f9885e85664 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f9885e5dd6e in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9885e5dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f988be9ccf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f988be4048b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f988bc5927e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f97bcf2d1aa in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f988bc5dfcb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f988ae1708a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f988b56a24f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f97cd08e700 (LWP 3180)):
#0  0x00007f9885e5c53a in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007f9885e5c701 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9885e5de76 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9885e5dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f988be9ccf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f988be4048b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f988bc5927e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f988f97929b in  () at /usr/lib/libQt5Quick.so.5
#8  0x00007f988bc5dfcb in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f988ae1708a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f988b56a24f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f97cf2e7700 (LWP 3058)):
#0  0x00007f988b55fd4b in poll () at /usr/lib/libc.so.6
#1  0x00007f9885e5ded3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9885e5dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f988be9ccf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f988be4048b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f988bc5927e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f988bc5dfcb in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f988ae1708a in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f988b56a24f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f9866fd5700 (LWP 2990)):
#0  0x00007f988ae1d38d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f9891697ef7 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f9891697f39 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f988ae1708a in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f988b56a24f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f987133a700 (LWP 2954)):
#0  0x00007f9885e855f9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f9885e5d77d in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9885e5ddf6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f9885e5dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f988be9ccf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f988be4048b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f988bc5927e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f988edccbc9 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f988bc5dfcb in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f988ae1708a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f988b56a24f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f98739cf700 (LWP 2918)):
#0  0x00007f988b55fd4b in poll () at /usr/lib/libc.so.6
#1  0x00007f9885e5ded3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9885e5dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f988be9ccf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f988be4048b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f988bc5927e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f988edccbc9 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f988bc5dfcb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f988ae1708a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f988b56a24f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f9879606700 (LWP 2891)):
#0  0x00007f988b55fd4b in poll () at /usr/lib/libc.so.6
#1  0x00007f9885e5ded3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f9885e5dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f988be9ccf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f988be4048b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f988bc5927e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f988c2b8376 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f988bc5dfcb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f988ae1708a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f988b56a24f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f9891fbb800 (LWP 2863)):
[KCrash Handler]
#5  0x00007f97c64b7b0f in  () at /usr/lib/qt/qml/org/kde/plasma/private/kicker/libkickerplugin.so
#6  0x00007f988be71d3f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#7  0x00007f9890ff50e3 in KActivities::Consumer::currentActivityChanged(QString const&) () at /usr/lib/libKF5Activities.so.5
#8  0x00007f9890ff6832 in  () at /usr/lib/libKF5Activities.so.5
#9  0x00007f988be71c16 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#10 0x00007f9890ff4f96 in  () at /usr/lib/libKF5Activities.so.5
#11 0x00007f988be71d3f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#12 0x00007f9890fee919 in  () at /usr/lib/libKF5Activities.so.5
#13 0x00007f9890ff0a26 in  () at /usr/lib/libKF5Activities.so.5
#14 0x00007f988c2c3abd in  () at /usr/lib/libQt5DBus.so.5
#15 0x00007f988be72662 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#16 0x00007f988cde9f2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007f988cdf1a06 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#18 0x00007f988be42060 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#19 0x00007f988be448b6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#20 0x00007f988be9d6e4 in  () at /usr/lib/libQt5Core.so.5
#21 0x00007f9885e5c270 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#22 0x00007f9885e5df69 in  () at /usr/lib/libglib-2.0.so.0
#23 0x00007f9885e5dfae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#24 0x00007f988be9ccd1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#25 0x00007f988be4048b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#26 0x00007f988be494d8 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#27 0x000056529571d8a3 in  ()
#28 0x00007f988b494f6a in __libc_start_main () at /usr/lib/libc.so.6
#29 0x000056529571dc5a in _start ()

Reported using DrKonqi

Comment 1 Matheus Marques 2017-10-17 23:05:19 UTC

After the afternoon update of some packages on Oct. 17, I think the issue is solved. I've tried it now and there is no sign of the bad behaviour. Everything working properly.

Thanks.

Comment 2 Marco Martin 2017-11-03 16:12:50 UTC

*** Bug 386439 has been marked as a duplicate of this bug. ***