Bug 352987

Application: plasmashell (5.4.1)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-28-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
Plasma crashed randomly, dual montor, start gimp or other programs...

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 0x7f8ef5a6b7c0 (LWP 3101))]

Thread 11 (Thread 0x7f8edf3ed700 (LWP 3106)):
#0  0x00007f8ef014a8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8ef26e9b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8ef26eb64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8ee1f7c099 in QXcbEventReader::run (this=0xb2e340) at qxcbconnection.cpp:1105
#4  0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0xb2e340) at thread/qthread_unix.cpp:337
#5  0x00007f8eef9d16aa in start_thread (arg=0x7f8edf3ed700) at pthread_create.c:333
#6  0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f8ed7fff700 (LWP 3122)):
#0  0x00007f8eeca72f21 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8eeca757ef in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8eeca75e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8eeca75fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8ef0a62c6c in QEventDispatcherGlib::processEvents (this=0x7f8ecc0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f8ef0a073e2 in QEventLoop::exec (this=this@entry=0x7f8ed7ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f8ef07c6b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f8ef2586f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0xc49790) at thread/qthread_unix.cpp:337
#9  0x00007f8eef9d16aa in start_thread (arg=0x7f8ed7fff700) at pthread_create.c:333
#10 0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f8ec9b72700 (LWP 3160)):
#0  0x00007f8eeca75670 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8eeca75e37 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8eeca75fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8ef0a62c6c in QEventDispatcherGlib::processEvents (this=0x7f8ec40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f8ef0a073e2 in QEventLoop::exec (this=this@entry=0x7f8ec9b71de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8ef07c6b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8ef2586f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0xff7950) at thread/qthread_unix.cpp:337
#8  0x00007f8eef9d16aa in start_thread (arg=0x7f8ec9b72700) at pthread_create.c:333
#9  0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f8ec3a81700 (LWP 3262)):
#0  0x00007f8ef014a8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8eeca75ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8eeca75fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8ef0a62c6c in QEventDispatcherGlib::processEvents (this=0x7f8ebc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f8ef0a073e2 in QEventLoop::exec (this=this@entry=0x7f8ec3a80de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8ef07c6b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8ef2586f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0x11c1600) at thread/qthread_unix.cpp:337
#8  0x00007f8eef9d16aa in start_thread (arg=0x7f8ec3a81700) at pthread_create.c:333
#9  0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f8ec2161700 (LWP 3269)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ef4ba9644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f8ef4ba9689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f8eef9d16aa in start_thread (arg=0x7f8ec2161700) at pthread_create.c:333
#4  0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f8e3ab8b700 (LWP 3270)):
#0  0x00007f8eecaba789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8eeca758cc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8eeca75e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8eeca75fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8ef0a62c6c in QEventDispatcherGlib::processEvents (this=0x7f8e340008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f8ef0a073e2 in QEventLoop::exec (this=this@entry=0x7f8e3ab8ad90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f8ef07c6b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f8ef5716b56 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0x15545f0) at thread/qthread_unix.cpp:337
#9  0x00007f8eef9d16aa in start_thread (arg=0x7f8e3ab8b700) at pthread_create.c:333
#10 0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f8e32f40700 (LWP 3272)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ef07ccc6b in wait (time=18446744073709551615, this=0x17b37e0) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x13f3ea0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f8ef5788fab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f8ef57893a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0x13f3e20) at thread/qthread_unix.cpp:337
#6  0x00007f8eef9d16aa in start_thread (arg=0x7f8e32f40700) at pthread_create.c:333
#7  0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f8e2bbff700 (LWP 3273)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ef07ccc6b in wait (time=18446744073709551615, this=0x16e0be0) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0xe14390, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f8ef5788fab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f8ef57893a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0xe14310) at thread/qthread_unix.cpp:337
#6  0x00007f8eef9d16aa in start_thread (arg=0x7f8e2bbff700) at pthread_create.c:333
#7  0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f8e1e27b700 (LWP 3285)):
#0  0x00007ffd409e3cf5 in clock_gettime ()
#1  0x00007f8ef016438d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f8ef0881cb6 in qt_clock_gettime (ts=0x7f8e1e27ab20, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007f8ef0a60639 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f8e18002cd0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f8ef0a60ba5 in QTimerInfoList::timerWait (this=0x7f8e18002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007f8ef0a6203e in timerSourcePrepareHelper (timeout=0x7f8e1e27abf4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f8e1e27abf4) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f8eeca753fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f8eeca75de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f8eeca75fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f8ef0a62c6c in QEventDispatcherGlib::processEvents (this=0x7f8e180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007f8ef0a073e2 in QEventLoop::exec (this=this@entry=0x7f8e1e27adc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f8ef07c6b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007f8e28646cf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#16 0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0x21bcd30) at thread/qthread_unix.cpp:337
#17 0x00007f8eef9d16aa in start_thread (arg=0x7f8e1e27b700) at pthread_create.c:333
#18 0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f8e30b4b700 (LWP 3293)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8ef07ccc6b in wait (time=18446744073709551615, this=0x2dd1e50) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2dd1770, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f8ef5788fab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f8ef57893a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f8ef07cbb0e in QThreadPrivate::start (arg=0x2dd16f0) at thread/qthread_unix.cpp:337
#6  0x00007f8eef9d16aa in start_thread (arg=0x7f8e30b4b700) at pthread_create.c:333
#7  0x00007f8ef0155eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f8ef5a6b7c0 (LWP 3101)):
[KCrash Handler]
#6  Plasma::Applet::actions (this=this@entry=0x0) at ../../../src/plasma/applet.cpp:571
#7  0x0000000000456dc1 in ShellCorona::addOutput (this=this@entry=0xc2b6a0, output=...) at ../../shell/shellcorona.cpp:862
#8  0x0000000000456ef3 in ShellCorona::outputEnabledChanged (this=0xc2b6a0) at ../../shell/shellcorona.cpp:756
#9  0x00007f8ef0a3a35a in call (a=0x7ffd408cdb20, r=0xc2b6a0, this=0x13ad320) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#10 QMetaObject::activate (sender=0xf45ea0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3702
#11 0x00007f8ef35dcee4 in KScreen::Output::apply (this=0xf45ea0, other=...) at ../../src/output.cpp:516
#12 0x00007f8ef35ca7af in KScreen::Config::apply (this=this@entry=0x119c7f0, other=...) at ../../src/config.cpp:343
#13 0x00007f8ef35d14a3 in KScreen::ConfigMonitor::Private::updateConfigs (this=0x13b3a90, newConfig=...) at ../../src/configmonitor.cpp:174
#14 0x00007f8ef35d265b in KScreen::ConfigMonitor::Private::edidReady (this=0x13b3a90, watcher=0x21cd530) at ../../src/configmonitor.cpp:159
#15 0x00007f8ef0a3a35a in call (a=0x7ffd408cdf90, r=0x13b3a90, this=0xdeaff0) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#16 QMetaObject::activate (sender=0x27c11d0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd408cdf90) at kernel/qobject.cpp:3702
#17 0x00007f8ef0a3b057 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f8ef5bf6500 <QDBusPendingCallWatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd408cdf90) at kernel/qobject.cpp:3582
#18 0x00007f8ef5bdaa4f in QDBusPendingCallWatcher::finished (this=<optimized out>, _t1=0x27c11d0) at .moc/moc_qdbuspendingcall.cpp:147
#19 0x00007f8ef5bdc155 in _q_finished (this=<optimized out>) at qdbuspendingcall.cpp:487
#20 QDBusPendingCallWatcher::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qdbuspendingcall.cpp:79
#21 0x00007f8ef0a3b73a in QObject::event (this=0x27c11d0, e=<optimized out>) at kernel/qobject.cpp:1245
#22 0x00007f8ef1313b2c in QApplicationPrivate::notify_helper (this=0xb01b60, receiver=0x27c11d0, e=0xb40eb0) at kernel/qapplication.cpp:3720
#23 0x00007f8ef1319000 in QApplication::notify (this=0x7ffd408ce690, receiver=0x27c11d0, e=0xb40eb0) at kernel/qapplication.cpp:3503
#24 0x00007f8ef0a09c2b in QCoreApplication::notifyInternal (this=0x7ffd408ce690, receiver=0x27c11d0, event=event@entry=0xb40eb0) at kernel/qcoreapplication.cpp:935
#25 0x00007f8ef0a0bc9b in sendEvent (event=0xb40eb0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#26 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xaf7060) at kernel/qcoreapplication.cpp:1552
#27 0x00007f8ef0a0c298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#28 0x00007f8ef0a62843 in postEventSourceDispatch (s=0xb5bfc0) at kernel/qeventdispatcher_glib.cpp:271
#29 0x00007f8eeca75c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f8eeca75f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f8eeca75fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f8ef0a62c57 in QEventDispatcherGlib::processEvents (this=0xb69070, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#33 0x00007f8ef0a073e2 in QEventLoop::exec (this=this@entry=0x7ffd408ce510, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#34 0x00007f8ef0a0f02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#35 0x00007f8ef0d4e31c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#36 0x00007f8ef130f7a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#37 0x00000000004324f6 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 352864, bug 351562, bug 351507, bug 347764, bug 347747.

Reported using DrKonqi