Application: plasmashell (5.2.2)

Qt Version: 5.5.0
Operating System: Linux 3.19.0-18-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
successful login, workspace never loads.

Configuration:
Kubuntu 15.04 (vivid) fresh install other than correct xorg.conf for 6-head system
6x identical monitors @ 1366x768
1x Radeon HD7700 (Trinity) Onboard
2x Radeon HD5450 (Cedar) PCI-E
Desktop compositing disabled in kwin to facilitate Xinerama.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Bus error
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fea66ff37c0 (LWP 1885))]

Thread 17 (Thread 0x7fea5428f700 (LWP 1887)):
#0  0x00007fea61d0b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea642c9b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fea642cb64f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fea56a44c39 in QXcbEventReader::run (this=0x250f840) at qxcbconnection.cpp:1186
#4  0x00007fea62395e1e in QThreadPrivate::start (arg=0x250f840) at thread/qthread_unix.cpp:331
#5  0x00007fea615876aa in start_thread (arg=0x7fea5428f700) at pthread_create.c:333
#6  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fea51b2f700 (LWP 1890)):
#0  0x00007fea5e60e7a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fea5e5c9ddb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea51b2ede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fea62395e1e in QThreadPrivate::start (arg=0x25dc4c0) at thread/qthread_unix.cpp:331
#8  0x00007fea615876aa in start_thread (arg=0x7fea51b2f700) at pthread_create.c:333
#9  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fea3f9df700 (LWP 1894)):
#0  0x00007fff14fdac53 in clock_gettime ()
#1  0x00007fea61d2538d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fea6244aee6 in qt_clock_gettime (ts=0x7fea3f9deb40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007fea6262c609 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fea38002cd0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fea6262cb75 in QTimerInfoList::timerWait (this=0x7fea38002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007fea6262e00e in timerSourcePrepareHelper (timeout=0x7fea3f9dec14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fea3f9dec14) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fea5e5c93fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fea5e5c9de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea3f9dede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fea62395e1e in QThreadPrivate::start (arg=0x32bd1e0) at thread/qthread_unix.cpp:331
#17 0x00007fea615876aa in start_thread (arg=0x7fea3f9df700) at pthread_create.c:333
#18 0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fea3d9ff700 (LWP 1898)):
#0  0x00007fea5e60e789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fea5e5c9409 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea3d9fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fea62395e1e in QThreadPrivate::start (arg=0x2f94ba0) at thread/qthread_unix.cpp:331
#9  0x00007fea615876aa in start_thread (arg=0x7fea3d9ff700) at pthread_create.c:333
#10 0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fea3c9fe700 (LWP 1899)):
#0  0x00007fea61d0749d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea5e60d2f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c996c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea5e5c9e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea340008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea3c9fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fea62395e1e in QThreadPrivate::start (arg=0x2e29f60) at thread/qthread_unix.cpp:331
#10 0x00007fea615876aa in start_thread (arg=0x7fea3c9fe700) at pthread_create.c:333
#11 0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fea2f7ff700 (LWP 1900)):
#0  0x00007fea61d0b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea5e5c9ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea2f7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fea62395e1e in QThreadPrivate::start (arg=0x2eb1210) at thread/qthread_unix.cpp:331
#8  0x00007fea615876aa in start_thread (arg=0x7fea2f7ff700) at pthread_create.c:333
#9  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fea2e7fe700 (LWP 1901)):
#0  0x00007fea5e60e789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fea5e5c9fb8 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea2e7fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007fea62395e1e in QThreadPrivate::start (arg=0x30c4830) at thread/qthread_unix.cpp:331
#7  0x00007fea615876aa in start_thread (arg=0x7fea2e7fe700) at pthread_create.c:333
#8  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fea2d70d700 (LWP 1902)):
#0  0x00007fea61d0b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea5e5c9ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea2d70cde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fea62395e1e in QThreadPrivate::start (arg=0x312b820) at thread/qthread_unix.cpp:331
#8  0x00007fea615876aa in start_thread (arg=0x7fea2d70d700) at pthread_create.c:333
#9  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fea1ffff700 (LWP 1903)):
#0  0x00007fff14fdac53 in clock_gettime ()
#1  0x00007fea61d2538d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fea6244aee6 in qt_clock_gettime (ts=0x7fea1fffeb40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007fea6262c609 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fea18002cd0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fea6262cb75 in QTimerInfoList::timerWait (this=0x7fea18002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007fea6262e00e in timerSourcePrepareHelper (timeout=0x7fea1fffec14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fea1fffec14) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fea5e5c93fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fea5e5c9de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea1fffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fea62395e1e in QThreadPrivate::start (arg=0x3303280) at thread/qthread_unix.cpp:331
#17 0x00007fea615876aa in start_thread (arg=0x7fea1ffff700) at pthread_create.c:333
#18 0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fea1edd7700 (LWP 1904)):
#0  0x00007fea61d0b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea5e5c9ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea1edd6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fea62395e1e in QThreadPrivate::start (arg=0x33a1060) at thread/qthread_unix.cpp:331
#8  0x00007fea615876aa in start_thread (arg=0x7fea1edd7700) at pthread_create.c:333
#9  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fea1dba7700 (LWP 1905)):
#0  0x00007fea6238dbfa in testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x345c9c8: 0x1) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  testAndSetAcquire<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x345c9c8: 0x1) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:166
#2  testAndSetAcquire (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, this=0x345c9c8, this@entry=0x29) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:278
#3  fastTryLock (current=<synthetic pointer>, this=0x345c9c8, this@entry=0x29) at thread/qmutex.h:82
#4  QMutex::lock (this=this@entry=0x345c9c8) at thread/qmutex.cpp:212
#5  0x00007fea6262e579 in QMutexLocker (m=0x345c9c8, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#6  canWaitLocked (this=0x345c9a0) at ../../include/QtCore/5.5.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:243
#7  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7fea140012d0) at kernel/qeventdispatcher_glib.cpp:254
#8  postEventSourceCheck (source=0x7fea140012d0) at kernel/qeventdispatcher_glib.cpp:264
#9  0x00007fea5e5c98c1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fea5e5c9e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea1dba6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fea62395e1e in QThreadPrivate::start (arg=0x344a630) at thread/qthread_unix.cpp:331
#17 0x00007fea615876aa in start_thread (arg=0x7fea1dba7700) at pthread_create.c:333
#18 0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fea1caa6700 (LWP 1906)):
#0  0x00007fea61d0b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea5e5c9ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fea080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea1caa5de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fea62395e1e in QThreadPrivate::start (arg=0x351d7e0) at thread/qthread_unix.cpp:331
#8  0x00007fea615876aa in start_thread (arg=0x7fea1caa6700) at pthread_create.c:333
#9  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fea0f7ff700 (LWP 1907)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fea66115664 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fea661156a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fea615876aa in start_thread (arg=0x7fea0f7ff700) at pthread_create.c:333
#4  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fea0effe700 (LWP 1908)):
#0  0x00007fea61d0b8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fea5e5c9ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fe9840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea0effdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fea62395e1e in QThreadPrivate::start (arg=0x3598000) at thread/qthread_unix.cpp:331
#8  0x00007fea615876aa in start_thread (arg=0x7fea0effe700) at pthread_create.c:333
#9  0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fea0d6f7700 (LWP 1911)):
#0  0x00007fea5e60e785 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fea5e5c8df0 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9d75 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fe97c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fea0d6f6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fea6415fc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fea62395e1e in QThreadPrivate::start (arg=0x36b0320) at thread/qthread_unix.cpp:331
#9  0x00007fea615876aa in start_thread (arg=0x7fea0d6f7700) at pthread_create.c:333
#10 0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fe983b67700 (LWP 1912)):
#0  0x00007fea5e60e7a2 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fea5e5c9852 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fea5e5c9e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fea6262ec3c in QEventDispatcherGlib::processEvents (this=0x7fe9780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fe983b66d90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fea62390d94 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fea66c8fc66 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fea62395e1e in QThreadPrivate::start (arg=0x37b9250) at thread/qthread_unix.cpp:331
#9  0x00007fea615876aa in start_thread (arg=0x7fe983b67700) at pthread_create.c:333
#10 0x00007fea61d16eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fea66ff37c0 (LWP 1885)):
[KCrash Handler]
#6  0x00007fea640aff02 in QV4::Heap::String::append(QV4::Heap::String const*, QChar*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fea640affd5 in QV4::Heap::String::simplifyString() const () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fea64020b51 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fea6401f14c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fea6401f250 in QV4::ExecutionEngine::toVariant(QV4::Value const&, int, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fea640dc0d5 in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fea6414cd5c in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007fea6414d4ae in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fea641289d7 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007fea640c834c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fea62604f51 in QMetaObject::activate (sender=0x3636f00, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3604
#17 0x00007fea640c0863 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#18 0x00007fea625e40ab in QMetaProperty::write (this=this@entry=0x7fff14fa1660, object=object@entry=0x3636f00, value=...) at kernel/qmetaobject.cpp:3065
#19 0x00007fea6260eeef in QObject::setProperty (this=0x3636f00, name=name@entry=0x7fea6626e44f "containment", value=...) at kernel/qobject.cpp:3865
#20 0x00007fea66258da5 in PlasmaQuick::ViewPrivate::setContainment (this=0x3628210, cont=cont@entry=0x3396910) at ../../../src/plasmaquick/view.cpp:126
#21 0x00007fea662590b9 in PlasmaQuick::View::setContainment (this=this@entry=0x3586d60, cont=cont@entry=0x3396910) at ../../../src/plasmaquick/view.cpp:243
#22 0x0000000000453457 in ShellCorona::addOutput (this=this@entry=0x259fc00, output=...) at ../../shell/shellcorona.cpp:859
#23 0x0000000000455f9f in ShellCorona::load (this=0x259fc00) at ../../shell/shellcorona.cpp:351
#24 0x000000000045666a in operator() (op=<optimized out>, __closure=<synthetic pointer>) at ../../shell/shellcorona.cpp:289
#25 call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:494
#26 call<QtPrivate::List<KScreen::ConfigOperation*>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:551
#27 QtPrivate::QFunctorSlotObject<ShellCorona::setShell(const QString&)::<lambda(KScreen::ConfigOperation*)>, 1, QtPrivate::List<KScreen::ConfigOperation*>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:192
#28 0x00007fea6260516a in call (a=0x7fff14fa1b90, r=0x259fc00, this=0x2e0a450) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#29 QMetaObject::activate (sender=sender@entry=0x2e08900, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff14fa1b90) at kernel/qobject.cpp:3703
#30 0x00007fea62605e57 in QMetaObject::activate (sender=sender@entry=0x2e08900, m=m@entry=0x7fea64d3cac0 <KScreen::ConfigOperation::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff14fa1b90) at kernel/qobject.cpp:3583
#31 0x00007fea64b3012f in KScreen::ConfigOperation::finished (this=this@entry=0x2e08900, _t1=_t1@entry=0x2e08900) at moc_configoperation.cpp:145
#32 0x00007fea64b1bd10 in KScreen::ConfigOperationPrivate::doEmitResult (this=<optimized out>) at ../../src/configoperation.cpp:55
#33 0x00007fea6260653a in QObject::event (this=0x2fd8fb0, e=<optimized out>) at kernel/qobject.cpp:1246
#34 0x00007fea62ef523c in QApplicationPrivate::notify_helper (this=0x24f23c0, receiver=0x2fd8fb0, e=0x25ce390) at kernel/qapplication.cpp:3716
#35 0x00007fea62efa8a8 in QApplication::notify (this=0x7fff14fa2260, receiver=0x2fd8fb0, e=0x25ce390) at kernel/qapplication.cpp:3499
#36 0x00007fea625d5aab in QCoreApplication::notifyInternal (this=0x7fff14fa2260, receiver=0x2fd8fb0, event=event@entry=0x25ce390) at kernel/qcoreapplication.cpp:963
#37 0x00007fea625d7d5b in sendEvent (event=0x25ce390, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#38 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x24e9000) at kernel/qcoreapplication.cpp:1580
#39 0x00007fea625d8358 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1438
#40 0x00007fea6262e813 in postEventSourceDispatch (s=0x25410f0) at kernel/qeventdispatcher_glib.cpp:271
#41 0x00007fea5e5c9c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007fea5e5c9f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007fea5e5c9fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007fea6262ec27 in QEventDispatcherGlib::processEvents (this=0x2535f20, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#45 0x00007fea625d31b2 in QEventLoop::exec (this=this@entry=0x7fff14fa20e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#46 0x00007fea625db23c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1216
#47 0x00007fea62929fec in QGuiApplication::exec () at kernel/qguiapplication.cpp:1522
#48 0x00007fea62ef0e35 in QApplication::exec () at kernel/qapplication.cpp:2976
#49 0x000000000042fd9b in main (argc=4, argv=<optimized out>) at ../../shell/main.cpp:158

Reported using DrKonqi