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:
- editing a file with nthe. nothing else was going on. this is the second crash like this today.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f182138b900 (LWP 3220))]

Thread 23 (Thread 0x7f18015ed700 (LWP 3224)):
#0  0x00007f18191d52fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f181f61a182 in _xcb_conn_wait () at /usr/lib64/libxcb.so.1
#2  0x00007f181f61bc77 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f180377b999 in QXcbEventReader::run() () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#6  0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 22 (Thread 0x7f17fa610700 (LWP 3226)):
#0  0x00007f1814384de0 in g_source_iter_next (iter=iter@entry=0x7f17fa60faf0, source=source@entry=0x7f17fa60fae8) at gmain.c:894
#1  0x00007f18143872fb in g_main_context_prepare (context=context@entry=0x7f17f4000990, priority=priority@entry=0x7f17fa60fb70) at gmain.c:3388
#2  0x00007f1814387ceb in g_main_context_iterate (context=context@entry=0x7f17f4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f17f4000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 21 (Thread 0x7f17f1289700 (LWP 3254)):
#0  0x00007f181a0181e2 in socketNotifierSourceCheck(_GSource*) () at /usr/lib64/libQt5Core.so.5
#1  0x00007f1814387801 in g_main_context_check (context=context@entry=0x7f17ec000990, max_priority=2147483647, fds=fds@entry=0x7f17ec002e70, n_fds=n_fds@entry=1) at gmain.c:3649
#2  0x00007f1814387d60 in g_main_context_iterate (context=context@entry=0x7f17ec000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f17ec000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 20 (Thread 0x7f17eafaa700 (LWP 3261)):
#0  0x00007f18143ccec9 in g_mutex_lock (mutex=mutex@entry=0x7f17e4000990) at gthread-posix.c:1336
#1  0x00007f181438780c in g_main_context_check (context=context@entry=0x7f17e4000990, max_priority=2147483647, fds=fds@entry=0x7f17e4003070, n_fds=n_fds@entry=1) at gmain.c:3651
#2  0x00007f1814387d60 in g_main_context_iterate (context=context@entry=0x7f17e4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f17e4000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 19 (Thread 0x7f17e9769700 (LWP 3262)):
#0  0x00007f18143ccec9 in g_mutex_lock (mutex=mutex@entry=0x7f17dc000990) at gthread-posix.c:1336
#1  0x00007f1814387cc0 in g_main_context_iterate (context=context@entry=0x7f17dc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3775
#2  0x00007f1814387ecc in g_main_context_iteration (context=0x7f17dc000990, may_block=1) at gmain.c:3869
#3  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#9  0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 18 (Thread 0x7f17e37ff700 (LWP 3263)):
#0  0x00007f18191d52fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f1814387dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f17d8002e70, timeout=<optimized out>, context=0x7f17d8000990) at gmain.c:4103
#2  0x00007f1814387dbc in g_main_context_iterate (context=context@entry=0x7f17d8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f17d8000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 17 (Thread 0x7f17e1ffe700 (LWP 3264)):
#0  0x00007f18143ccee4 in g_mutex_unlock (mutex=0x7f17d0000990) at gthread-posix.c:1348
#1  0x00007f1814387ed6 in g_main_context_iteration (context=0x7f17d0000990, may_block=<optimized out>) at gmain.c:3870
#2  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#6  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#8  0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 16 (Thread 0x7f17d7fff700 (LWP 3267)):
#0  0x00007f18143ccec9 in g_mutex_lock (mutex=mutex@entry=0x7f17cc000990) at gthread-posix.c:1336
#1  0x00007f1814387d7e in g_main_context_iterate (context=context@entry=0x7f17cc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3812
#2  0x00007f1814387ecc in g_main_context_iteration (context=0x7f17cc000990, may_block=1) at gmain.c:3869
#3  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#9  0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 15 (Thread 0x7f17d67fe700 (LWP 3268)):
#0  0x00007f18143ccee4 in g_mutex_unlock (mutex=0x7f17c4000990) at gthread-posix.c:1348
#1  0x00007f1814386dce in g_main_context_acquire (context=0x7f17c4000990) at gmain.c:3196
#2  0x00007f1814387c75 in g_main_context_iterate (context=context@entry=0x7f17c4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3758
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f17c4000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 14 (Thread 0x7f17cbfff700 (LWP 3269)):
#0  0x00007f18191d52fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f1814387dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f17c0003270, timeout=<optimized out>, context=0x7f17c0000990) at gmain.c:4103
#2  0x00007f1814387dbc in g_main_context_iterate (context=context@entry=0x7f17c0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f17c0000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 13 (Thread 0x7f17caffe700 (LWP 3270)):
#0  0x00007f1817c78540 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib64/libpthread.so.0
#1  0x00007f1820a80494 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /usr/lib64/libQt5Script.so.5
#2  0x00007f1820a804d9 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#4  0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 12 (Thread 0x7f17c9ffd700 (LWP 3272)):
#0  0x00007f18191d0fad in read () at /usr/lib64/libc.so.6
#1  0x00007f18143cbb00 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f17c9ffcaa0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  0x00007f18143cbb00 in g_wakeup_acknowledge (wakeup=0x7f17c0002720) at gwakeup.c:210
#3  0x00007f18143878b4 in g_main_context_check (context=context@entry=0x7f1738000990, max_priority=2147483647, fds=fds@entry=0x7f1738003070, n_fds=n_fds@entry=1) at gmain.c:3600
#4  0x00007f1814387d60 in g_main_context_iterate (context=context@entry=0x7f1738000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#5  0x00007f1814387ecc in g_main_context_iteration (context=0x7f1738000990, may_block=1) at gmain.c:3869
#6  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#9  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#10 0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#12 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 11 (Thread 0x7f173dc93700 (LWP 4371)):
#0  0x00007f18191d52fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f1814387dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f17340027d0, timeout=<optimized out>, context=0x7f1734000990) at gmain.c:4103
#2  0x00007f1814387dbc in g_main_context_iterate (context=context@entry=0x7f1734000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f1734000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 10 (Thread 0x7f17335ef700 (LWP 4411)):
#0  0x00007f18143ccee4 in g_mutex_unlock (mutex=0x7f172c000990) at gthread-posix.c:1348
#1  0x00007f1814386dce in g_main_context_acquire (context=0x7f172c000990) at gmain.c:3196
#2  0x00007f1814387c75 in g_main_context_iterate (context=context@entry=0x7f172c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3758
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f172c000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e723616 in QQuickPixmapReader::run() () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 9 (Thread 0x7f17311ee700 (LWP 4414)):
#0  0x00007f18143ccee4 in g_mutex_unlock (mutex=0x7f1724000990) at gthread-posix.c:1348
#1  0x00007f1814387350 in g_main_context_prepare (context=context@entry=0x7f1724000990, priority=priority@entry=0x7f17311edb70) at gmain.c:3408
#2  0x00007f1814387ceb in g_main_context_iterate (context=context@entry=0x7f1724000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f1724000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 8 (Thread 0x7f172957d700 (LWP 4416)):
#0  0x00007f18143ccec9 in g_mutex_lock (mutex=mutex@entry=0x7f1720000990) at gthread-posix.c:1336
#1  0x00007f181438780c in g_main_context_check (context=context@entry=0x7f1720000990, max_priority=2147483647, fds=fds@entry=0x7f1720003270, n_fds=n_fds@entry=1) at gmain.c:3651
#2  0x00007f1814387d60 in g_main_context_iterate (context=context@entry=0x7f1720000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f1720000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 7 (Thread 0x7f171f7ff700 (LWP 4417)):
#0  0x00007f181a0183b5 in idleTimerSourceCheck(_GSource*) () at /usr/lib64/libQt5Core.so.5
#1  0x00007f1814387801 in g_main_context_check (context=context@entry=0x7f1718000990, max_priority=2147483647, fds=fds@entry=0x7f1718002c70, n_fds=n_fds@entry=1) at gmain.c:3649
#2  0x00007f1814387d60 in g_main_context_iterate (context=context@entry=0x7f1718000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f1718000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 6 (Thread 0x7f1716d93700 (LWP 4421)):
#0  0x00007f1814384df7 in g_source_iter_next (iter=iter@entry=0x7f1716d92ad0, source=source@entry=0x7f1716d92ac8) at gmain.c:902
#1  0x00007f181438772a in g_main_context_check (context=context@entry=0x7f1710000990, max_priority=2147483647, fds=fds@entry=0x7f1710004ac0, n_fds=n_fds@entry=1) at gmain.c:3629
#2  0x00007f1814387d60 in g_main_context_iterate (context=context@entry=0x7f1710000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3805
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f1710000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f171caff397 in KCupsConnection::run() (this=0x5489280) at ../../libkcups/KCupsConnection.cpp:303
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 5 (Thread 0x7f1715784700 (LWP 4428)):
#0  0x00007f18191d52fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f1814387dbc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f1708003270, timeout=<optimized out>, context=0x7f1708000990) at gmain.c:4103
#2  0x00007f1814387dbc in g_main_context_iterate (context=context@entry=0x7f1708000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3803
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f1708000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 4 (Thread 0x7f170f7ff700 (LWP 4429)):
#0  0x00007f1814384e57 in g_source_iter_next (iter=iter@entry=0x7f170f7feaf0, source=source@entry=0x7f170f7feae8) at gmain.c:926
#1  0x00007f18143872fb in g_main_context_prepare (context=context@entry=0x7f1704000990, priority=priority@entry=0x7f170f7feb70) at gmain.c:3388
#2  0x00007f1814387ceb in g_main_context_iterate (context=context@entry=0x7f1704000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f1704000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 3 (Thread 0x7f170dffe700 (LWP 4430)):
#0  0x00007f18143ccee4 in g_mutex_unlock (mutex=0x7f16fc000990) at gthread-posix.c:1348
#1  0x00007f1814387350 in g_main_context_prepare (context=context@entry=0x7f16fc000990, priority=priority@entry=0x7f170dffdb70) at gmain.c:3408
#2  0x00007f1814387ceb in g_main_context_iterate (context=context@entry=0x7f16fc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#3  0x00007f1814387ecc in g_main_context_iteration (context=0x7f16fc000990, may_block=1) at gmain.c:3869
#4  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 2 (Thread 0x7f1703fff700 (LWP 4431)):
#0  0x00007f18143ccee4 in g_mutex_unlock (mutex=0x7f16f8000990) at gthread-posix.c:1348
#1  0x00007f1814387ed6 in g_main_context_iteration (context=0x7f16f8000990, may_block=<optimized out>) at gmain.c:3870
#2  0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f1819ddc5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007f181e0b0245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#6  0x00007f1819de154e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f1817c73555 in start_thread () at /usr/lib64/libpthread.so.0
#8  0x00007f18191e0b9d in clone () at /usr/lib64/libc.so.6

Thread 1 (Thread 0x7f182138b900 (LWP 3220)):
[KCrash Handler]
#5  0x00007f17f38f84ac in brw_meta_fast_clear () at /usr/lib64/dri/i965_dri.so
#6  0x00007f17f38838dc in brw_clear () at /usr/lib64/dri/i965_dri.so
#7  0x00007f181e7533fa in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f181e758de2 in QSGBatchRenderer::Renderer::render() () at /usr/lib64/libQt5Quick.so.5
#9  0x00007f181e764adf in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib64/libQt5Quick.so.5
#10 0x00007f181e76532b in QSGRenderer::renderScene(unsigned int) () at /usr/lib64/libQt5Quick.so.5
#11 0x00007f181e77571e in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib64/libQt5Quick.so.5
#12 0x00007f181e7bf65b in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib64/libQt5Quick.so.5
#13 0x00007f181e79001b in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) () at /usr/lib64/libQt5Quick.so.5
#14 0x00007f181e791121 in QSGGuiThreadRenderLoop::event(QEvent*) () at /usr/lib64/libQt5Quick.so.5
#15 0x00007f181b5784ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#16 0x00007f181b57d976 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#17 0x00007f1819fc261b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f181a017bad in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#19 0x00007f181a0180b1 in timerSourceDispatch(_GSource*, int (*)(void*), void*) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f1814387a8a in g_main_context_dispatch (context=0x7f17fc0016f0) at gmain.c:3122
#21 0x00007f1814387a8a in g_main_context_dispatch (context=context@entry=0x7f17fc0016f0) at gmain.c:3737
#22 0x00007f1814387e20 in g_main_context_iterate (context=context@entry=0x7f17fc0016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3808
#23 0x00007f1814387ecc in g_main_context_iteration (context=0x7f17fc0016f0, may_block=1) at gmain.c:3869
#24 0x00007f181a018dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#25 0x00007f1819fbfdaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f1819fc7e6c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#27 0x000000000042ef16 in main(int, char**) (argc=2, argv=<optimized out>) at ../../shell/main.cpp:154

Possible duplicates by query: bug 352309, bug 352300, bug 352257, bug 352244, bug 352231.

Reported using DrKonqi