Application: plasmashell (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-30-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:

Does not happen consistently, but seemingly at least once a session, Plasma will crash when scrolling from one subfolder to another in the Application Menu widget. It displays the outline of the new folder popup briefly, but not its contents, then segfaults.

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 0x7f312fb937c0 (LWP 23942))]

Thread 37 (Thread 0x7f311ab01700 (LWP 23943)):
#0  0x00007f312a9428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f312ceafb72 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f311ab00d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007f312ceafb72 in _xcb_conn_wait (c=c@entry=0xbc90d0, cond=cond@entry=0xbc9110, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:447
#3  0x00007f312ceb164f in xcb_wait_for_event (c=0xbc90d0) at ../../src/xcb_in.c:622
#4  0x00007f311d690099 in QXcbEventReader::run() (this=0xbd7330) at qxcbconnection.cpp:1105
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0xbd7330) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f311ab01700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7f3113fff700 (LWP 23947)):
#0  0x00007f3127023114 in g_ptr_array_set_size (array=0xc12680, length=length@entry=0) at /build/buildd/glib2.0-2.44.1/./glib/garray.c:1143
#1  0x00007f312704e351 in g_main_context_prepare (context=context@entry=0x7f310c0009b0, priority=priority@entry=0x7f3113ffeca0) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3381
#2  0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f310c0009b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f310c0009b0, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f310c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3113ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0xcfa660) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f3113fff700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7f3109cfe700 (LWP 23962)):
#0  0x00007f3127093789 in g_mutex_lock (mutex=mutex@entry=0x7f3104000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1336
#1  0x00007f312704e409 in g_main_context_prepare (context=context@entry=0x7f3104000990, priority=priority@entry=0x7f3109cfdca0) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3412
#2  0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f3104000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f3104000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f31040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3109cfdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0xcd75b0) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f3109cfe700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7f31033bd700 (LWP 23974)):
#0  0x00007fff3d36ed18 in clock_gettime ()
#1  0x00007f312a95c38d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f312b079cb6 in qt_gettime() (ts=0x7f31033bcb40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  0x00007f312b079cb6 in qt_gettime() (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  0x00007f312b079cb6 in qt_gettime() () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007f312b258639 in QTimerInfoList::updateCurrentTime() (this=this@entry=0x7f30f4002ed0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f312b258ba5 in QTimerInfoList::timerWait(timespec&) (this=0x7f30f4002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007f312b25a03e in timerSourcePrepare(GSource*, gint*) (timeout=0x7f31033bcc14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  0x00007f312b25a03e in timerSourcePrepare(GSource*, gint*) (source=<optimized out>, timeout=timeout@entry=0x7f31033bcc14) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007f312704e3fd in g_main_context_prepare (context=context@entry=0x7f30f4000990, priority=priority@entry=0x7f31033bcca0) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3410
#10 0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f30f4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#11 0x00007f312704efcc in g_main_context_iteration (context=0x7f30f4000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#12 0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f31033bcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x127bb50) at thread/qthread_unix.cpp:337
#17 0x00007f312a1c96aa in start_thread (arg=0x7f31033bd700) at pthread_create.c:333
#18 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7f31023bc700 (LWP 23977)):
#0  0x00007f31270937a4 in g_mutex_unlock (mutex=0x7f30f8000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1348
#1  0x00007f312704e490 in g_main_context_prepare (context=context@entry=0x7f30f8000990, priority=priority@entry=0x7f31023bbca0) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3475
#2  0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f30f8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f30f8000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f31023bbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x1352240) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f31023bc700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7f31013ab700 (LWP 23978)):
#0  0x00007f31270937a4 in g_mutex_unlock (mutex=0x7f30ec000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1348
#1  0x00007f312704e8b9 in g_main_context_check (context=context@entry=0x7f30ec000990, max_priority=2147483647, fds=fds@entry=0x7f30ec003270, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3647
#2  0x00007f312704ee60 in g_main_context_iterate (context=context@entry=0x7f30ec000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3805
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f30ec000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30ec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f31013aade0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x146a100) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f31013ab700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7f30f3fff700 (LWP 23979)):
#0  0x00007f3127093789 in g_mutex_lock (mutex=mutex@entry=0x7f30e8000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1336
#1  0x00007f312704ddf0 in g_main_context_acquire (context=0x7f30e8000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3182
#2  0x00007f312704ed75 in g_main_context_iterate (context=context@entry=0x7f30e8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3758
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f30e8000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30e80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30f3ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x1524240) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f30f3fff700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7f30f2ffe700 (LWP 23980)):
#0  0x00007f312a9428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f312704eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f30e0002e70, timeout=-1, context=0x7f30e0000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:4103
#2  0x00007f312704eebc in g_main_context_iterate (context=context@entry=0x7f30e0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3803
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f30e0000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30e00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30f2ffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x1617c40) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f30f2ffe700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7f30f1ffd700 (LWP 23981)):
#0  0x00007f312fb3666b in _dl_update_slotinfo (req_modid=1) at dl-tls.c:650
#1  0x00007f312fb3687c in update_get_addr (ti=0x7f312b45d680) at dl-tls.c:801
#2  0x00007f312afc2a12 in QThreadData::current(bool) () at thread/qthread_unix.cpp:181
#3  0x00007f312afc2a12 in QThreadData::current(bool) (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:212
#4  0x00007f312b25a1ba in postEventSourcePrepare(GSource*, gint*) (s=0x7f30e40012d0, timeout=timeout@entry=0x7f30f1ffcc14) at kernel/qeventdispatcher_glib.cpp:247
#5  0x00007f312704e3fd in g_main_context_prepare (context=context@entry=0x7f30e4000990, priority=priority@entry=0x7f30f1ffcca0) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3410
#6  0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f30e4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#7  0x00007f312704efcc in g_main_context_iteration (context=0x7f30e4000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#8  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#9  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30f1ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#10 0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#11 0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x17165e0) at thread/qthread_unix.cpp:337
#13 0x00007f312a1c96aa in start_thread (arg=0x7f30f1ffd700) at pthread_create.c:333
#14 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7f30f0f9c700 (LWP 23982)):
#0  0x00007f312704ed42 in g_main_context_iterate (context=context@entry=0x7f30d8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3745
#1  0x00007f312704efcc in g_main_context_iteration (context=0x7f30d8000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#2  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30d80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30f0f9bde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x180cc60) at thread/qthread_unix.cpp:337
#7  0x00007f312a1c96aa in start_thread (arg=0x7f30f0f9c700) at pthread_create.c:333
#8  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7f30df7ff700 (LWP 23984)):
#0  0x00007f312a9428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f312704eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f30d40027d0, timeout=-1, context=0x7f30d4000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:4103
#2  0x00007f312704eebc in g_main_context_iterate (context=context@entry=0x7f30d4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3803
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f30d4000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30df7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x1901ce0) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f30df7ff700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7f30de74e700 (LWP 23985)):
#0  0x00007f312a9428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f312704eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f30cc002a70, timeout=-1, context=0x7f30cc000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:4103
#2  0x00007f312704eebc in g_main_context_iterate (context=context@entry=0x7f30cc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3803
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f30cc000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30de74dde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0xce76f0) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f30de74e700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7f30dd64d700 (LWP 23986)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312eccd644 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f312eccd689 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f312a1c96aa in start_thread (arg=0x7f30dd64d700) at pthread_create.c:333
#4  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7f30dcd3c700 (LWP 23987)):
#0  0x00007f3127093789 in g_mutex_lock (mutex=mutex@entry=0x7f30d0000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1336
#1  0x00007f312704e409 in g_main_context_prepare (context=context@entry=0x7f30d0000990, priority=priority@entry=0x7f30dcd3bca0) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3412
#2  0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f30d0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f30d0000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30dcd3bde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x1af47c0) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f30dcd3c700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7f304a716700 (LWP 24013)):
#0  0x00007f312704e8ad in g_main_context_check (context=context@entry=0x7f3044000990, max_priority=2147483647, fds=fds@entry=0x7f3044003270, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3646
#1  0x00007f312704ee60 in g_main_context_iterate (context=context@entry=0x7f3044000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3805
#2  0x00007f312704efcc in g_main_context_iteration (context=0x7f3044000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#3  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f304a715de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x1e25230) at thread/qthread_unix.cpp:337
#8  0x00007f312a1c96aa in start_thread (arg=0x7f304a716700) at pthread_create.c:333
#9  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7f3048d39700 (LWP 24015)):
#0  0x00007f31270937a4 in g_mutex_unlock (mutex=0x7f303c000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1348
#1  0x00007f312704e3f0 in g_main_context_prepare (context=context@entry=0x7f303c000990, priority=priority@entry=0x7f3048d38c50) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3408
#2  0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f303c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f303c000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f303c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3048d38d90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312f836b56 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x1f5f160) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f3048d39700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f3043fff700 (LWP 24022)):
#0  0x00007f31270937a0 in g_mutex_unlock (mutex=0x7f3038000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1345
#1  0x00007f312704e3f0 in g_main_context_prepare (context=context@entry=0x7f3038000990, priority=priority@entry=0x7f3043ffeca0) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3408
#2  0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f3038000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f3038000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3043ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x1f62b90) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f3043fff700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f3040cd3700 (LWP 24027)):
#0  0x00007f312a9428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f312704eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f3030003270, timeout=-1, context=0x7f3030000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:4103
#2  0x00007f312704eebc in g_main_context_iterate (context=context@entry=0x7f3030000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3803
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f3030000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3040cd2de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x264c870) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f3040cd3700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f30377ff700 (LWP 24028)):
#0  0x00007f312a9428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f312704eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f302c002c70, timeout=-1, context=0x7f302c000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:4103
#2  0x00007f312704eebc in g_main_context_iterate (context=context@entry=0x7f302c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3803
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f302c000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f302c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30377fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x2769e90) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f30377ff700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f30367fe700 (LWP 24029)):
#0  0x00007f3127093789 in g_mutex_lock (mutex=mutex@entry=0x7f3024000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1336
#1  0x00007f312704e8cc in g_main_context_check (context=context@entry=0x7f3024000990, max_priority=2147483647, fds=fds@entry=0x7f3024003270, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3651
#2  0x00007f312704ee60 in g_main_context_iterate (context=context@entry=0x7f3024000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3805
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f3024000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30367fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x284c2e0) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f30367fe700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f30357fd700 (LWP 24030)):
#0  0x00007f31270937a4 in g_mutex_unlock (mutex=0x7f3028000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1348
#1  0x00007f312704e6f9 in g_main_context_query (context=context@entry=0x7f3028000990, max_priority=2147483647, timeout=timeout@entry=0x7f30357fcca4, fds=fds@entry=0x7f3028003270, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3557
#2  0x00007f312704ee37 in g_main_context_iterate (context=context@entry=0x7f3028000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3790
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f3028000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f30357fcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x297e380) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f30357fd700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f3023fff700 (LWP 24031)):
#0  0x00007f3127093789 in g_mutex_lock (mutex=mutex@entry=0x7f301c000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1336
#1  0x00007f312704eea2 in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f301c002e70, timeout=-1, context=0x7f301c000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:4098
#2  0x00007f312704eea2 in g_main_context_iterate (context=context@entry=0x7f301c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3803
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f301c000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f301c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3023ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x2a469c0) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f3023fff700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f3022ffe700 (LWP 24032)):
#0  0x00007f312a95bc3f in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:65
#1  0x00007f312a9428d2 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007f312704eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f3014002e70, timeout=-1, context=0x7f3014000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:4103
#3  0x00007f312704eebc in g_main_context_iterate (context=context@entry=0x7f3014000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3803
#4  0x00007f312704efcc in g_main_context_iteration (context=0x7f3014000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#5  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3022ffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#8  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x17ffd80) at thread/qthread_unix.cpp:337
#10 0x00007f312a1c96aa in start_thread (arg=0x7f3022ffe700) at pthread_create.c:333
#11 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f3021ffd700 (LWP 24033)):
#0  0x00007f3127093789 in g_mutex_lock (mutex=mutex@entry=0x7f3018000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1336
#1  0x00007f312704efb8 in g_main_context_iteration (context=0x7f3018000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3868
#2  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3021ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x2c25800) at thread/qthread_unix.cpp:337
#7  0x00007f312a1c96aa in start_thread (arg=0x7f3021ffd700) at pthread_create.c:333
#8  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f3020ffc700 (LWP 24035)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0xcf8150) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x259bc50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x259bbd0) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f3020ffc700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f30123fe700 (LWP 24036)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x2e57680) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x2e512b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x2e51230) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f30123fe700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f3005312700 (LWP 24041)):
#0  0x00007f312a9428dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f312704eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f3000004ac0, timeout=3442264, context=0x7f3000000990) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:4103
#2  0x00007f312704eebc in g_main_context_iterate (context=context@entry=0x7f3000000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3803
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f3000000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f30000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3005311dc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f300757acf7 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x3423080) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f3005312700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f2ffffff700 (LWP 24042)):
#0  0x00007f312a93e49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3123637073 in  () at /usr/lib/nvidia-355/tls/libnvidia-tls.so.355.11
#2  0x00007f31270922f0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7f2fffffebd0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  0x00007f31270922f0 in g_wakeup_acknowledge (wakeup=0x7f30000025b0) at /build/buildd/glib2.0-2.44.1/./glib/gwakeup.c:210
#4  0x00007f312704e96c in g_main_context_check (context=context@entry=0x7f2ff8000990, max_priority=2147483647, fds=fds@entry=0x7f2ff8003270, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3600
#5  0x00007f312704ee60 in g_main_context_iterate (context=context@entry=0x7f2ff8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3805
#6  0x00007f312704efcc in g_main_context_iteration (context=0x7f2ff8000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#7  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f2ff80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#8  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f2fffffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#10 0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x3605170) at thread/qthread_unix.cpp:337
#12 0x00007f312a1c96aa in start_thread (arg=0x7f2ffffff700) at pthread_create.c:333
#13 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f2ff7fff700 (LWP 24043)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x45f99e0) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x45faf80, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x45faf00) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f2ff7fff700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f2ff6c7e700 (LWP 25307)):
#0  0x00007f31270937a4 in g_mutex_unlock (mutex=0x7f2fe8000990) at /build/buildd/glib2.0-2.44.1/./glib/gthread-posix.c:1348
#1  0x00007f312704e3f0 in g_main_context_prepare (context=context@entry=0x7f2fe8000990, priority=priority@entry=0x7f2ff6c7dca0) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3408
#2  0x00007f312704ede8 in g_main_context_iterate (context=context@entry=0x7f2fe8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3788
#3  0x00007f312704efcc in g_main_context_iteration (context=0x7f2fe8000990, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#4  0x00007f312b25ac6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f2fe80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f2ff6c7dde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f312afbeb44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f312cd4cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x47d04a0) at thread/qthread_unix.cpp:337
#9  0x00007f312a1c96aa in start_thread (arg=0x7f2ff6c7e700) at pthread_create.c:333
#10 0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f2ff5ab9700 (LWP 25522)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x3487690) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x4b4ef60, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x4b4eee0) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f2ff5ab9700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f2ff4e3d700 (LWP 27250)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x48c8f40) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x48c5330, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x48c52b0) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f2ff4e3d700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f2fe6fbf700 (LWP 27367)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x51d36f0) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0xbe5f20, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0xbe5ea0) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f2fe6fbf700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f2fe63be700 (LWP 27661)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5160e70) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x5161cc0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x5161c40) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f2fe63be700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f2fe51bc700 (LWP 32617)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x5b99280) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x22aff40, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x22afec0) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f2fe51bc700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2fe5bbd700 (LWP 32618)):
#0  0x00007f312a1ceda0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (time=18446744073709551615, this=0x625be30) at thread/qwaitcondition_unix.cpp:128
#2  0x00007f312afc4c6b in QWaitCondition::wait(QMutex*, unsigned long) (this=<optimized out>, mutex=0x5956680, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f312f8a8fab in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f312f8a93a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f312afc3b0e in QThreadPrivate::start(void*) (arg=0x5956600) at thread/qthread_unix.cpp:337
#6  0x00007f312a1c96aa in start_thread (arg=0x7f2fe5bbd700) at pthread_create.c:333
#7  0x00007f312a94deed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f312fb937c0 (LWP 23942)):
[KCrash Handler]
#6  0x00007f312afbb9c5 in QMutex::lock() (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x48: <error reading variable>) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#7  0x00007f312afbb9c5 in QMutex::lock() (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x48: <error reading variable>) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:166
#8  0x00007f312afbb9c5 in QMutex::lock() (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, this=0x48) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:270
#9  0x00007f312afbb9c5 in QMutex::lock() (current=<synthetic pointer>, this=0x48) at thread/qmutex.h:82
#10 0x00007f312afbb9c5 in QMutex::lock() (this=0x48) at thread/qmutex.cpp:212
#11 0x00007f312f8aab24 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f312f8abcad in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f312bb0bb2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=0xbab6c0, receiver=0xe81180, e=0x7fff3d2ee490) at kernel/qapplication.cpp:3720
#14 0x00007f312bb11000 in QApplication::notify(QObject*, QEvent*) (this=0x7fff3d2ee860, receiver=0xe81180, e=0x7fff3d2ee490) at kernel/qapplication.cpp:3503
#15 0x00007f312b201c2b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7fff3d2ee860, receiver=0xe81180, event=event@entry=0x7fff3d2ee490) at kernel/qcoreapplication.cpp:935
#16 0x00007f312b259ae5 in QTimerInfoList::activateTimers() (event=0x7fff3d2ee490, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#17 0x00007f312b259ae5 in QTimerInfoList::activateTimers() (this=0xc09870) at kernel/qtimerinfo_unix.cpp:635
#18 0x00007f312b259f61 in timerSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#19 0x00007f312704ec3d in g_main_context_dispatch (context=0x7f3114001710) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3122
#20 0x00007f312704ec3d in g_main_context_dispatch (context=context@entry=0x7f3114001710) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3737
#21 0x00007f312704ef20 in g_main_context_iterate (context=context@entry=0x7f3114001710, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3808
#22 0x00007f312704efcc in g_main_context_iteration (context=0x7f3114001710, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#23 0x00007f312b25ac57 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0xc097a0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#24 0x00007f312b1ff3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fff3d2ee6e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#25 0x00007f312b20702c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1188
#26 0x00007f312b54631c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1510
#27 0x00007f312bb077a5 in QApplication::exec() () at kernel/qapplication.cpp:2956
#28 0x000000000042fd9b in main(int, char**) (argc=2, argv=<optimized out>) at ../../shell/main.cpp:158

Possible duplicates by query: bug 353361, bug 353328, bug 353307, bug 353201, bug 353132.

Reported using DrKonqi