Application: plasmashell (5.3.2)
 (Compiled from sources)
Qt Version: 5.5.0
Operating System: Linux 4.1.6-200.fc22.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
this is an ongoing problem that appears to have started about a week or so ago. this system is as up to date as possible.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9340d04900 (LWP 4211))]

Thread 23 (Thread 0x7f9320f66700 (LWP 4226)):
#0  0x00007f9338b4e2fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f933ef93182 in _xcb_conn_wait () at /usr/lib64/libxcb.so.1
#2  0x00007f933ef94c77 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f93230f4999 in QXcbEventReader::run() () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#6  0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 22 (Thread 0x7f931e15b700 (LWP 4238)):
#0  0x00007ffcbc5b0929 in  ()
#1  0x00007ffcbc5b0c91 in clock_gettime ()
#2  0x00007f9338b67d9d in clock_gettime () at /usr/lib64/libc.so.6
#3  0x00007f933980abc6 in qt_gettime() () at /usr/lib64/libQt5Core.so.5
#4  0x00007f933998f839 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#5  0x00007f933998fda5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f933999118e in timerSourcePrepare(_GSource*, int*) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f9333d0035d in g_main_context_prepare (context=context@entry=0x7f9310000990, priority=priority@entry=0x7f931e15ab70) at gmain.c:3410
#8  0x00007f9333d00ceb in g_main_context_iterate (context=context@entry=0x7f9310000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#9  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9310000990, may_block=1) at gmain.c:3869
#10 0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#12 0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#13 0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#14 0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#15 0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#16 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 21 (Thread 0x7f930ffff700 (LWP 4247)):
#0  0x00007f9333d45ec9 in g_mutex_lock (mutex=mutex@entry=0x7f9308000990) at gthread-posix.c:1336
#1  0x00007f9333d00cc0 in g_main_context_iterate (context=context@entry=0x7f9308000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3775
#2  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9308000990, may_block=1) at gmain.c:3869
#3  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#9  0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 20 (Thread 0x7f930e7fe700 (LWP 4252)):
#0  0x00007f9338b4e2fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f9333d00dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f9300003070, timeout=<optimized out>, context=0x7f9300000990) at gmain.c:4103
#2  0x00007f9333d00dbc in g_main_context_iterate (context=context@entry=0x7f9300000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9300000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 19 (Thread 0x7f9307fff700 (LWP 4253)):
#0  0x00007f9338b4e2fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f9333d00dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f92fc003070, timeout=<optimized out>, context=0x7f92fc000990) at gmain.c:4103
#2  0x00007f9333d00dbc in g_main_context_iterate (context=context@entry=0x7f92fc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f92fc000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 18 (Thread 0x7f9306ffe700 (LWP 4254)):
#0  0x00007f9333d00981 in g_main_context_dispatch (context=context@entry=0x7f92f4000990) at gmain.c:3741
#1  0x00007f9333d00e20 in g_main_context_iterate (context=context@entry=0x7f92f4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3808
#2  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f92f4000990, may_block=1) at gmain.c:3869
#3  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#9  0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 17 (Thread 0x7f93057fd700 (LWP 4256)):
#0  0x00007f9333d45ec9 in g_mutex_lock (mutex=mutex@entry=0x7f92f8000990) at gthread-posix.c:1336
#1  0x00007f9333d00581 in g_main_context_query (context=context@entry=0x7f92f8000990, max_priority=2147483647, timeout=timeout@entry=0x7f93057fcb74, fds=fds@entry=0x7f92f8003270, n_fds=n_fds@entry=1) at gmain.c:3512
#2  0x00007f9333d00d37 in g_main_context_iterate (context=context@entry=0x7f92f8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3790
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f92f8000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 16 (Thread 0x7f92f37ff700 (LWP 4257)):
#0  0x00007f9333d00c42 in g_main_context_iterate (context=context@entry=0x7f92ec000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3745
#1  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f92ec000990, may_block=1) at gmain.c:3869
#2  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#6  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#8  0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 15 (Thread 0x7f92f1ffe700 (LWP 4259)):
#0  0x00007f9338b4e2fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f9333d00dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f92e4002e70, timeout=<optimized out>, context=0x7f92e4000990) at gmain.c:4103
#2  0x00007f9333d00dbc in g_main_context_iterate (context=context@entry=0x7f92e4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f92e4000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 14 (Thread 0x7f92ebfff700 (LWP 4260)):
#0  0x00007f933998fd90 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#1  0x00007f933999118e in timerSourcePrepare(_GSource*, int*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f9333d0035d in g_main_context_prepare (context=context@entry=0x7f92e0000990, priority=priority@entry=0x7f92ebffeb70) at gmain.c:3410
#3  0x00007f9333d00ceb in g_main_context_iterate (context=context@entry=0x7f92e0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#4  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f92e0000990, may_block=1) at gmain.c:3869
#5  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#10 0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#11 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 13 (Thread 0x7f92ea7fe700 (LWP 4261)):
#0  0x00007f93375f1540 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib64/libpthread.so.0
#1  0x00007f93403f9494 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /usr/lib64/libQt5Script.so.5
#2  0x00007f93403f94d9 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#4  0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 12 (Thread 0x7f92e97fd700 (LWP 4262)):
#0  0x00007f9333d45ec9 in g_mutex_lock (mutex=mutex@entry=0x7f9258000990) at gthread-posix.c:1336
#1  0x00007f9333d0080c in g_main_context_check (context=context@entry=0x7f9258000990, max_priority=2147483647, fds=fds@entry=0x7f9258003070, n_fds=n_fds@entry=1) at gmain.c:3651
#2  0x00007f9333d00d60 in g_main_context_iterate (context=context@entry=0x7f9258000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9258000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 11 (Thread 0x7f925d493700 (LWP 4271)):
#0  0x00007f9333d45ec9 in g_mutex_lock (mutex=mutex@entry=0x7f9254000990) at gthread-posix.c:1336
#1  0x00007f9333d00da2 in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f92540027d0, timeout=<optimized out>, context=0x7f9254000990) at gmain.c:4098
#2  0x00007f9333d00da2 in g_main_context_iterate (context=context@entry=0x7f9254000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9254000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 10 (Thread 0x7f9252def700 (LWP 4276)):
#0  0x00007f933998fda8 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#1  0x00007f933999118e in timerSourcePrepare(_GSource*, int*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f9333d0035d in g_main_context_prepare (context=context@entry=0x7f924c000990, priority=priority@entry=0x7f9252deeb20) at gmain.c:3410
#3  0x00007f9333d00ceb in g_main_context_iterate (context=context@entry=0x7f924c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#4  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f924c000990, may_block=1) at gmain.c:3869
#5  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f933e09c616 in QQuickPixmapReader::run() () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#10 0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#11 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 9 (Thread 0x7f924bfff700 (LWP 4283)):
#0  0x00007f9333d45ee4 in g_mutex_unlock (mutex=0x7f9244000990) at gthread-posix.c:1348
#1  0x00007f9333d0078a in g_main_context_check (context=context@entry=0x7f9244000990, max_priority=2147483647, fds=fds@entry=0x7f9244003270, n_fds=n_fds@entry=1) at gmain.c:3716
#2  0x00007f9333d00d60 in g_main_context_iterate (context=context@entry=0x7f9244000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9244000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 8 (Thread 0x7f9243fff700 (LWP 4297)):
#0  0x00007f9333cfde80 in g_source_iter_next (iter=iter@entry=0x7f9243ffeaf0, source=source@entry=0x7f9243ffeae8) at gmain.c:907
#1  0x00007f9333d002fb in g_main_context_prepare (context=context@entry=0x7f923c000990, priority=priority@entry=0x7f9243ffeb70) at gmain.c:3388
#2  0x00007f9333d00ceb in g_main_context_iterate (context=context@entry=0x7f923c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f923c000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 7 (Thread 0x7f9242ffe700 (LWP 4298)):
#0  0x00007f9338b4e2fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f9333d00dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f9234002c70, timeout=<optimized out>, context=0x7f9234000990) at gmain.c:4103
#2  0x00007f9333d00dbc in g_main_context_iterate (context=context@entry=0x7f9234000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9234000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 6 (Thread 0x7f923a656700 (LWP 4310)):
#0  0x00007f9333d45ee4 in g_mutex_unlock (mutex=0x7f9230000990) at gthread-posix.c:1348
#1  0x00007f9333d00639 in g_main_context_query (context=context@entry=0x7f9230000990, max_priority=2147483647, timeout=timeout@entry=0x7f923a655b54, fds=fds@entry=0x7f9230004ac0, n_fds=n_fds@entry=1) at gmain.c:3557
#2  0x00007f9333d00d37 in g_main_context_iterate (context=context@entry=0x7f9230000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3790
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9230000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f9240450397 in KCupsConnection::run() (this=0x3c5cc80) at ../../libkcups/KCupsConnection.cpp:303
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 5 (Thread 0x7f9239196700 (LWP 4348)):
#0  0x00007f9333d45ec9 in g_mutex_lock (mutex=mutex@entry=0x7f9228000990) at gthread-posix.c:1336
#1  0x00007f9333d0080c in g_main_context_check (context=context@entry=0x7f9228000990, max_priority=2147483647, fds=fds@entry=0x7f9228003270, n_fds=n_fds@entry=1) at gmain.c:3651
#2  0x00007f9333d00d60 in g_main_context_iterate (context=context@entry=0x7f9228000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9228000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 4 (Thread 0x7f922f7ff700 (LWP 4349)):
#0  0x00007f9333d45ee0 in g_mutex_unlock (mutex=0x7f9224000990) at gthread-posix.c:1345
#1  0x00007f9333d00639 in g_main_context_query (context=context@entry=0x7f9224000990, max_priority=2147483647, timeout=timeout@entry=0x7f922f7feb74, fds=fds@entry=0x7f9224002c70, n_fds=n_fds@entry=1) at gmain.c:3557
#2  0x00007f9333d00d37 in g_main_context_iterate (context=context@entry=0x7f9224000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3790
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9224000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 3 (Thread 0x7f922df8e700 (LWP 4350)):
#0  0x00007f9333d45ec9 in g_mutex_lock (mutex=mutex@entry=0x7f921c000990) at gthread-posix.c:1336
#1  0x00007f9333d00369 in g_main_context_prepare (context=context@entry=0x7f921c000990, priority=priority@entry=0x7f922df8db70) at gmain.c:3412
#2  0x00007f9333d00ceb in g_main_context_iterate (context=context@entry=0x7f921c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#3  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f921c000990, may_block=1) at gmain.c:3869
#4  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 2 (Thread 0x7f9223fff700 (LWP 4351)):
#0  0x00007f9338b49fad in read () at /usr/lib64/libc.so.6
#1  0x00007f9333d44b00 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f9223ffeaa0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  0x00007f9333d44b00 in g_wakeup_acknowledge (wakeup=0x7f921c002750) at gwakeup.c:210
#3  0x00007f9333d008b4 in g_main_context_check (context=context@entry=0x7f9218000990, max_priority=2147483647, fds=fds@entry=0x7f9218003270, n_fds=n_fds@entry=1) at gmain.c:3600
#4  0x00007f9333d00d60 in g_main_context_iterate (context=context@entry=0x7f9218000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#5  0x00007f9333d00ecc in g_main_context_iteration (context=0x7f9218000990, may_block=1) at gmain.c:3869
#6  0x00007f9339991dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f93397555a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#9  0x00007f933da29245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f933975a54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f93375ec555 in start_thread () at /usr/lib64/libpthread.so.0
#12 0x00007f9338b59b9d in clone () at /usr/lib64/libc.so.6

Thread 1 (Thread 0x7f9340d04900 (LWP 4211)):
[KCrash Handler]
#5  0x00007f931740f4ac in brw_meta_fast_clear () at /usr/lib64/dri/i965_dri.so
#6  0x00007f931739a8dc in brw_clear () at /usr/lib64/dri/i965_dri.so
#7  0x00007f933e0cc3fa in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f933e0d1de2 in QSGBatchRenderer::Renderer::render() () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f933e0ddadf in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib64/libQt5Quick.so.5
#10 0x00007f933e0de32b in QSGRenderer::renderScene(unsigned int) () at /usr/lib64/libQt5Quick.so.5
#11 0x00007f933e0ee71e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib64/libQt5Quick.so.5
#12 0x00007f933e13865b in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib64/libQt5Quick.so.5
#13 0x00007f933e10901b in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) () at /usr/lib64/libQt5Quick.so.5
#14 0x00007f933e10a121 in QSGGuiThreadRenderLoop::event(QEvent*) () at /usr/lib64/libQt5Quick.so.5
#15 0x00007f933aef14ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#16 0x00007f933aef6976 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007f933993b61b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f9339990bad in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#19 0x00007f93399910b1 in timerSourceDispatch(_GSource*, int (*)(void*), void*) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f9333d00a8a in g_main_context_dispatch (context=0x7f93180016f0) at gmain.c:3122
#21 0x00007f9333d00a8a in g_main_context_dispatch (context=context@entry=0x7f93180016f0) at gmain.c:3737
#22 0x00007f9333d00e20 in g_main_context_iterate (context=context@entry=0x7f93180016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3808
#23 0x00007f9333d00ecc in g_main_context_iteration (context=0x7f93180016f0, may_block=1) at gmain.c:3869
#24 0x00007f9339991d8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#25 0x00007f9339938daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f9339940e6c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#27 0x000000000042ef16 in main(int, char**) (argc=4, argv=<optimized out>) at ../../shell/main.cpp:154

Possible duplicates by query: bug 352467, bug 352456, bug 352439, bug 352433, bug 352417.

Reported using DrKonqi