Application: plasmashell (5.10.4)

Qt Version: 5.9.1
Frameworks Version: 5.36.0
Operating System: Linux 4.10.0-28-generic x86_64
Distribution: KDE neon User Edition 5.10

-- Information about the crash:
- What I was doing when the application crashed:
Crashed following Enabling audio virtual output device option and plugged out and in external speakers.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1ccd6888c0 (LWP 4468))]

Thread 10 (Thread 0x7f1bef580700 (LWP 7373)):
#0  0x00007f1cc7ecd70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1cc386838c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1cc386849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1cc87f594b in QEventDispatcherGlib::processEvents (this=0x7f1be40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f1cc879e7ca in QEventLoop::exec (this=this@entry=0x7f1bef57fce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f1cc85c7cd4 in QThread::exec (this=this@entry=0xd2ed90) at thread/qthread.cpp:515
#6  0x00007f1ccac95fa5 in QQmlThreadPrivate::run (this=0xd2ed90) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f1cc85cc989 in QThreadPrivate::start (arg=0xd2ed90) at thread/qthread_unix.cpp:368
#8  0x00007f1cc74716ba in start_thread (arg=0x7f1bef580700) at pthread_create.c:333
#9  0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f1bf54ab700 (LWP 6941)):
#0  0x00007f1cc7ec924d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1cc38ab6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1cc3867e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1cc3868330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1cc386849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1cc87f594b in QEventDispatcherGlib::processEvents (this=0x7f1be80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f1cc879e7ca in QEventLoop::exec (this=this@entry=0x7f1bf54aace0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007f1cc85c7cd4 in QThread::exec (this=this@entry=0x46d8cf0) at thread/qthread.cpp:515
#8  0x00007f1ccac95fa5 in QQmlThreadPrivate::run (this=0x46d8cf0) at qml/ftw/qqmlthread.cpp:147
#9  0x00007f1cc85cc989 in QThreadPrivate::start (arg=0x46d8cf0) at thread/qthread_unix.cpp:368
#10 0x00007f1cc74716ba in start_thread (arg=0x7f1bf54ab700) at pthread_create.c:333
#11 0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f1c025bd700 (LWP 4599)):
#0  0x00007f1cc7ecd70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1cc386838c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1cc386849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1cc87f594b in QEventDispatcherGlib::processEvents (this=0x7f1bfc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f1cc879e7ca in QEventLoop::exec (this=this@entry=0x7f1c025bccc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f1cc85c7cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f1c04a9b517 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f1cc85cc989 in QThreadPrivate::start (arg=0x3a6bd80) at thread/qthread_unix.cpp:368
#8  0x00007f1cc74716ba in start_thread (arg=0x7f1c025bd700) at pthread_create.c:333
#9  0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f1c170ab700 (LWP 4582)):
#0  0x00007f1cc38aca94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1cc3868381 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1cc386849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1cc87f594b in QEventDispatcherGlib::processEvents (this=0x7f1c100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f1cc879e7ca in QEventLoop::exec (this=this@entry=0x7f1c170aac90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f1cc85c7cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f1ccb637256 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f1cc85cc989 in QThreadPrivate::start (arg=0x106eb70) at thread/qthread_unix.cpp:368
#8  0x00007f1cc74716ba in start_thread (arg=0x7f1c170ab700) at pthread_create.c:333
#9  0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f1ca9948700 (LWP 4577)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1ccd0dc784 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f1ccd0dc7c9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f1cc74716ba in start_thread (arg=0x7f1ca9948700) at pthread_create.c:333
#4  0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f1cab9a8700 (LWP 4542)):
#0  0x00007ffe751f8939 in ?? ()
#1  0x00007ffe751f8bd6 in clock_gettime ()
#2  0x00007f1cc7ee7836 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7f1cab9a7a40) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007f1cc87f5251 in qt_clock_gettime (ts=0x7f1cab9a7a40, clock=<optimized out>) at kernel/qelapsedtimer_unix.cpp:111
#4  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#5  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#6  0x00007f1cc87f3a49 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f1ca0002ed0) at kernel/qtimerinfo_unix.cpp:91
#7  0x00007f1cc87f3fb5 in QTimerInfoList::timerWait (this=0x7f1ca0002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#8  0x00007f1cc87f56be in timerSourcePrepareHelper (timeout=0x7f1cab9a7b14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:132
#9  timerSourcePrepare (source=<optimized out>, timeout=0x7f1cab9a7b14) at kernel/qeventdispatcher_glib.cpp:165
#10 0x00007f1cc386791d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f1cc38682bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f1cc386849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f1cc87f594b in QEventDispatcherGlib::processEvents (this=0x7f1ca00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#14 0x00007f1cc879e7ca in QEventLoop::exec (this=this@entry=0x7f1cab9a7ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#15 0x00007f1cc85c7cd4 in QThread::exec (this=this@entry=0x814f90) at thread/qthread.cpp:515
#16 0x00007f1ccac95fa5 in QQmlThreadPrivate::run (this=0x814f90) at qml/ftw/qqmlthread.cpp:147
#17 0x00007f1cc85cc989 in QThreadPrivate::start (arg=0x814f90) at thread/qthread_unix.cpp:368
#18 0x00007f1cc74716ba in start_thread (arg=0x7f1cab9a8700) at pthread_create.c:333
#19 0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f1cb1c08700 (LWP 4533)):
#0  0x00007f1cc7ecd70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1cc386838c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1cc386849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1cc87f594b in QEventDispatcherGlib::processEvents (this=0x7f1ca40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f1cc879e7ca in QEventLoop::exec (this=this@entry=0x7f1cb1c07ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f1cc85c7cd4 in QThread::exec (this=this@entry=0x7f8270) at thread/qthread.cpp:515
#6  0x00007f1ccac95fa5 in QQmlThreadPrivate::run (this=0x7f8270) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f1cc85cc989 in QThreadPrivate::start (arg=0x7f8270) at thread/qthread_unix.cpp:368
#8  0x00007f1cc74716ba in start_thread (arg=0x7f1cb1c08700) at pthread_create.c:333
#9  0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f1cb364d700 (LWP 4498)):
#0  0x00007f1cc38aca79 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1cc3867dcc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1cc3868330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1cc386849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1cc87f594b in QEventDispatcherGlib::processEvents (this=0x7f1cac0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f1cc879e7ca in QEventLoop::exec (this=this@entry=0x7f1cb364ccd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f1cc85c7cd4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#7  0x00007f1ccd7c7b75 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f1cc85cc989 in QThreadPrivate::start (arg=0x7f1ccd83dda0) at thread/qthread_unix.cpp:368
#9  0x00007f1cc74716ba in start_thread (arg=0x7f1cb364d700) at pthread_create.c:333
#10 0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1cb8e70700 (LWP 4481)):
#0  0x00007f1cc7ecd70d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f1ccc03dc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f1ccc03f8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f1cbafb6329 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f1cc85cc989 in QThreadPrivate::start (arg=0x722e70) at thread/qthread_unix.cpp:368
#5  0x00007f1cc74716ba in start_thread (arg=0x7f1cb8e70700) at pthread_create.c:333
#6  0x00007f1cc7ed93dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f1ccd6888c0 (LWP 4468)):
[KCrash Handler]
#6  QVector<QQmlPropertyData>::count (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:234
#7  QQmlPropertyCache::property (index=58, this=0x0) at ../../include/QtQml/5.9.1/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:711
#8  QQmlBinding::getPropertyData (this=this@entry=0x36f8e70, propertyData=propertyData@entry=0x7ffe7519cf28, valueTypeData=valueTypeData@entry=0x7ffe7519cf30) at qml/qqmlbinding.cpp:520
#9  0x00007f1ccac80ac2 in GenericBinding<10>::write (this=0x36f8e70, result=..., isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:246
#10 0x00007f1ccac81740 in QQmlNonbindingBinding::doUpdate (this=0x36f8e70, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:210
#11 0x00007f1ccac7e9b3 in QQmlBinding::update (this=0x36f8e70, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:167
#12 0x00007f1ccac7ebfe in QQmlBinding::refresh (this=<optimized out>) at qml/qqmlbinding.cpp:439
#13 0x00007f1ccac54cc7 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:106
#14 0x00007f1ccabf6344 in QQmlData::signalEmitted (object=0x42af070, index=4, a=0x0) at qml/qqmlengine.cpp:839
#15 0x00007f1cc87cd31e in QMetaObject::activate (sender=sender@entry=0x42af070, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3644
#16 0x00007f1cc87cd527 in QMetaObject::activate (sender=sender@entry=0x42af070, m=m@entry=0x7f1c0d027240 <QPulseAudio::VolumeObject::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3628
#17 0x00007f1c0ce0fc90 in QPulseAudio::VolumeObject::volumeChanged (this=this@entry=0x42af070) at /workspace/build/obj-x86_64-linux-gnu/src/moc_volumeobject.cpp:270
#18 0x00007f1c0cdf8743 in QPulseAudio::VolumeObject::updateVolumeObject<pa_sink_info const> (info=0x7ffe7519ec70, this=0x42af070) at /workspace/build/src/volumeobject.h:54
#19 QPulseAudio::Device::updateDevice<pa_sink_info> (this=this@entry=0x42af070, info=info@entry=0x7ffe7519ec70) at /workspace/build/src/device.h:60
#20 0x00007f1c0cdf67a5 in QPulseAudio::Sink::update (this=this@entry=0x42af070, info=info@entry=0x7ffe7519ec70) at /workspace/build/src/sink.cpp:37
#21 0x00007f1c0cde749a in QPulseAudio::MapBase<QPulseAudio::Sink, pa_sink_info>::updateEntry (parent=0x331d540, info=0x7ffe7519ec70, this=0x331d550) at /workspace/build/src/maps.h:138
#22 QPulseAudio::Context::sinkCallback (info=0x7ffe7519ec70, this=0x331d540) at /workspace/build/src/context.cpp:454
#23 QPulseAudio::sink_cb (context=<optimized out>, info=0x7ffe7519ec70, eol=<optimized out>, data=0x331d540) at /workspace/build/src/context.cpp:68
#24 0x00007f1cbd7363bc in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#25 0x00007f1cbc9c0141 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#26 0x00007f1cbc9c04cb in pa_pdispatch_run () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#27 0x00007f1cbd72afce in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#28 0x00007f1cbc9c2d5f in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#29 0x00007f1cbc9c53db in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#30 0x00007f1cbc9c5789 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#31 0x00007f1cbc9c601a in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#32 0x00007f1cbd518f2b in ?? () from /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0
#33 0x00007f1cc3868197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f1cc38683f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f1cc386849c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f1cc87f592f in QEventDispatcherGlib::processEvents (this=0x75f4c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#37 0x00007f1cc879e7ca in QEventLoop::exec (this=this@entry=0x7ffe7519f240, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#38 0x00007f1cc87a7704 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#39 0x000000000041cd68 in main (argc=1, argv=<optimized out>) at /workspace/build/shell/main.cpp:166

Possible duplicates by query: bug 382770, bug 382734, bug 382416, bug 382132, bug 381525.

Reported using DrKonqi