Application: plasmashell (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 4.0.2-300.fc22.x86_64 x86_64
Distribution: "Fedora release 22 (Twenty Two)"

-- Information about the crash:
- What I was doing when the application crashed:
Log in on Fedora 22, start using desktop with Firefox browser

- Unusual behavior I noticed:
Plasma crashes several times even without further action from me.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
185	62:	movl	(%rsp), %edi
[Current thread is 1 (Thread 0x7f0b6019b900 (LWP 1910))]

Thread 45 (Thread 0x7f0b5897c700 (LWP 1911)):
#0  0x0000003adf6f666d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003ae2a0a182 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f0b5897bbc0) at /usr/include/bits/poll2.h:46
#2  0x0000003ae2a0a182 in _xcb_conn_wait (c=c@entry=0x1c3a5b0, cond=cond@entry=0x1c3a5f0, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:459
#3  0x0000003ae2a0bcff in xcb_wait_for_event (c=0x1c3a5b0) at xcb_in.c:623
#4  0x00007f0b598515e9 in QXcbEventReader::run() (this=0x1c48af0) at qxcbconnection.cpp:1108
#5  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x1c48af0) at thread/qthread_unix.cpp:337
#6  0x0000003ae0207555 in start_thread (arg=0x7f0b5897c700) at pthread_create.c:333
#7  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 44 (Thread 0x7f0b5248e700 (LWP 1916)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b4c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b5248dca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x1d24c60) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x1d24c60) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x1d24c60) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0b5248e700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 43 (Thread 0x7f0b4769e700 (LWP 1950)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b4769dca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x1f9e710) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x1f9e710) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x1f9e710) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0b4769e700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 42 (Thread 0x7f0b4535d700 (LWP 1975)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf2494d4 in g_main_context_release () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a3a6 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b3c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b4535cca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x2094b80) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x2094b80) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x2094b80) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0b4535d700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 41 (Thread 0x7f0b37fff700 (LWP 1977)):
#0  0x0000003adf28f214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a29d in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b37ffeca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x21c4cb0) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x21c4cb0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x21c4cb0) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0b37fff700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 40 (Thread 0x7f0b36ffe700 (LWP 1979)):
#0  0x0000003adf249ca9 in g_main_context_check () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b36ffdca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x22b1150) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x22b1150) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x22b1150) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0b36ffe700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 39 (Thread 0x7f0b35ffd700 (LWP 1984)):
#0  0x0000003adf24a2bc in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#2  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b2c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b35ffcca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x236db70) at thread/qthread.cpp:503
#5  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x236db70) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#6  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x236db70) at thread/qthread_unix.cpp:337
#7  0x0000003ae0207555 in start_thread (arg=0x7f0b35ffd700) at pthread_create.c:333
#8  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 38 (Thread 0x7f0b34f8c700 (LWP 1985)):
#0  0x0000003adf28f214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249dba in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b34f8bca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x24a3fd0) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x24a3fd0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x24a3fd0) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0b34f8c700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 37 (Thread 0x7f0b277ff700 (LWP 1986)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b1c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b277feca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x257aee0) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x257aee0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x257aee0) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0b277ff700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7f0b267fe700 (LWP 1987)):
#0  0x0000003adf28f214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249e29 in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b267fdca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x264ef40) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x264ef40) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x264ef40) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0b267fe700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7f0b255dd700 (LWP 1988)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249f86 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a450 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b255dcca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x274e520) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x274e520) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x274e520) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0b255dd700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7f0b13fff700 (LWP 1989)):
#0  0x0000003adf28f214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249980 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a31b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b0c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b13ffeca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x285d2d0) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x285d2d0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x285d2d0) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0b13fff700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7f0b12ffe700 (LWP 1990)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b12ffdca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x2931500) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x2931500) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x2931500) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0b12ffe700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7f0b11ffd700 (LWP 1992)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0b080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b11ffcca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x2a4b4e0) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x2a4b4e0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x2a4b4e0) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0b11ffd700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7f0b10ffc700 (LWP 1993)):
#0  0x00007f0b6193252f in QMutex::unlock() (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=0x1, _q_value=@0x2b24698: 0x0) at ../../src/corelib/arch/qatomic_x86.h:259
#1  0x00007f0b6193252f in QMutex::unlock() (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=<optimized out>, _q_value=@0x2b24698: 0x0) at ../../src/corelib/thread/qgenericatomic.h:175
#2  0x00007f0b6193252f in QMutex::unlock() (currentValue=<synthetic pointer>, newValue=0x0, expectedValue=<optimized out>, this=this@entry=0x2b24698) at ../../src/corelib/thread/qbasicatomic.h:272
#3  0x00007f0b6193252f in QMutex::unlock() (current=<synthetic pointer>, this=this@entry=0x2b24698) at thread/qmutex.h:85
#4  0x00007f0b6193252f in QMutex::unlock() (this=this@entry=0x2b24698) at thread/qmutex.cpp:264
#5  0x00007f0b61b6ffc5 in postEventSourceCheck(GSource*) (this=<synthetic pointer>) at ../../src/corelib/thread/qmutex.h:138
#6  0x00007f0b61b6ffc5 in postEventSourceCheck(GSource*) (this=<synthetic pointer>, __in_chrg=<optimized out>) at ../../src/corelib/thread/qmutex.h:132
#7  0x00007f0b61b6ffc5 in postEventSourceCheck(GSource*) (this=<optimized out>) at ../../src/corelib/thread/qthread_p.h:243
#8  0x00007f0b61b6ffc5 in postEventSourceCheck(GSource*) (timeout=<synthetic pointer>, s=0x7f0afc0012d0) at kernel/qeventdispatcher_glib.cpp:254
#9  0x00007f0b61b6ffc5 in postEventSourceCheck(GSource*) (source=0x7f0afc0012d0) at kernel/qeventdispatcher_glib.cpp:264
#10 0x0000003adf249e31 in g_main_context_check () at /lib64/libglib-2.0.so.0
#11 0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#12 0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#13 0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0afc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#14 0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b10ffbca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#15 0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x2b2f2f0) at thread/qthread.cpp:503
#16 0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x2b2f2f0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#17 0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x2b2f2f0) at thread/qthread_unix.cpp:337
#18 0x0000003ae0207555 in start_thread (arg=0x7f0b10ffc700) at pthread_create.c:333
#19 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7f0b037ff700 (LWP 1994)):
#0  0x0000003adf6f666d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf24a3ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0af80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b037feca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x2c62d50) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x2c62d50) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x2c62d50) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0b037ff700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7f0b027fe700 (LWP 1995)):
#0  0x0000003ae020c530 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000003b0ad806d4 in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x3b0b068e80) at /usr/src/debug/qtscript-opensource-src-5.4.1/src/3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x0000003b0ad80719 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=<optimized out>) at /usr/src/debug/qtscript-opensource-src-5.4.1/src/3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x0000003ae0207555 in start_thread (arg=0x7f0b027fe700) at pthread_create.c:333
#4  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7f0b01ffd700 (LWP 1996)):
#0  0x0000003adf249964 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a31b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0b01ffcca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x2d1b3a0) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x2d1b3a0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x2d1b3a0) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0b01ffd700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7f0a770eb700 (LWP 2129)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249cae in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a6c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a770eaca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x2fabd60) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x2fabd60) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x2fabd60) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0a770eb700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7f0a75825700 (LWP 2137)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a4e8 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#2  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a75824ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x30c8240) at thread/qthread.cpp:503
#5  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x30c8240) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#6  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x30c8240) at thread/qthread_unix.cpp:337
#7  0x0000003ae0207555 in start_thread (arg=0x7f0a75825700) at pthread_create.c:333
#8  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7f0a6b573700 (LWP 2148)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a6b572ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x33c6810) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x33c6810) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x33c6810) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0a6b573700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7f0a6a46a700 (LWP 2149)):
#0  0x0000003adf6f666d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf24a3ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a6a469c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x3503e40) at thread/qthread.cpp:503
#6  0x0000003c142f6ab6 in QQuickPixmapReader::run() (this=0x3503e40) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/quick/util/qquickpixmapcache.cpp:712
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x3503e40) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0a6a46a700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7f0a6967a700 (LWP 2150)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a2f0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a5c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a69679c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x350b740) at thread/qthread.cpp:503
#6  0x0000003c142f6ab6 in QQuickPixmapReader::run() (this=0x350b740) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/quick/util/qquickpixmapcache.cpp:712
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x350b740) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0a6967a700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7f0a575ff700 (LWP 2155)):
#0  0x0000003adf247417 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24992b in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a31b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a480008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a575feca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x3b249a0) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x3b249a0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x3b249a0) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0a575ff700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f0a6885f700 (LWP 2156)):
#0  0x0000003adf28f214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249980 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a31b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a50005aa0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a6885eca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x3e9b960) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x3e9b960) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x3e9b960) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0a6885f700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f0a4f7ff700 (LWP 2157)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a2f0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a4f7feca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x40cddc0) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x40cddc0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x40cddc0) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0a4f7ff700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f0a4e7fe700 (LWP 2158)):
#0  0x0000003adee125b5 in __GI___tls_get_addr (ti=0x7f0b61f4c6d0) at dl-tls.c:833
#1  0x00007f0b61938e22 in QThreadData::current(bool) () at thread/qthread_unix.cpp:181
#2  0x00007f0b61938e22 in QThreadData::current(bool) (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:212
#3  0x00007f0b61b6ffa1 in postEventSourceCheck(GSource*) (timeout=0x0, s=0x7f0a3c0012d0) at kernel/qeventdispatcher_glib.cpp:247
#4  0x00007f0b61b6ffa1 in postEventSourceCheck(GSource*) (source=0x7f0a3c0012d0) at kernel/qeventdispatcher_glib.cpp:264
#5  0x0000003adf249e31 in g_main_context_check () at /lib64/libglib-2.0.so.0
#6  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#7  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#8  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a3c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#9  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a4e7fdca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#10 0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x41b7120) at thread/qthread.cpp:503
#11 0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x41b7120) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#12 0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x41b7120) at thread/qthread_unix.cpp:337
#13 0x0000003ae0207555 in start_thread (arg=0x7f0a4e7fe700) at pthread_create.c:333
#14 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f0a4d7fd700 (LWP 2159)):
#0  0x0000003adf70fa52 in __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:98
#1  0x0000003adf6f6679 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x0000003adf24a3ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a4d7fcca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x42afbe0) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x42afbe0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x42afbe0) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0a4d7fd700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f0a3bfff700 (LWP 2160)):
#0  0x0000003adf6f666d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf24a3ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a340008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a3bffeca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x43dc4f0) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x43dc4f0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x43dc4f0) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0a3bfff700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f0a3affe700 (LWP 2161)):
#0  0x0000003adf6f666d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf24a3ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a2c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a3affdca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x4490ed0) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x4490ed0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x4490ed0) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0a3affe700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f0a39ffd700 (LWP 2162)):
#0  0x0000003adf249c07 in g_main_context_query () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a367 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a39ffcca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x457dfd0) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x457dfd0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x457dfd0) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0a39ffd700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f0a38ffc700 (LWP 2163)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249f86 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a450 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x466f150, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a38ffbca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x466f240) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x466f240) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x466f240) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0a38ffc700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f0a2b7ff700 (LWP 2164)):
#0  0x0000003adf247410 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249d5a in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a30003320, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a2b7feca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x476cbf0) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x476cbf0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x476cbf0) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0a2b7ff700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f0a2a7fe700 (LWP 2165)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a2c002f20, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a2a7fdca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x484ef70) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x484ef70) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x484ef70) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0a2a7fe700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f0a2830e700 (LWP 2168)):
#0  0x0000003adf28f214 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249980 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a31b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a34002f20, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a2830dc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f0a28d67397 in KCupsConnection::run() () at /lib64/libkcupslib.so
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x4c1dcc0) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0a2830e700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f0a26b18700 (LWP 2175)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf24a4e8 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#2  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a3c003be0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a26b17ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x4ff1660) at thread/qthread.cpp:503
#5  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x4ff1660) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#6  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x4ff1660) at thread/qthread_unix.cpp:337
#7  0x0000003ae0207555 in start_thread (arg=0x7f0a26b18700) at pthread_create.c:333
#8  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f0a27319700 (LWP 2176)):
#0  0x0000003adf28f1f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x0000003adf249e3c in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a400086e0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a27318ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x51be330) at thread/qthread.cpp:503
#7  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x51be330) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x51be330) at thread/qthread_unix.cpp:337
#9  0x0000003ae0207555 in start_thread (arg=0x7f0a27319700) at pthread_create.c:333
#10 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f0a25093700 (LWP 2177)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a44013be0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a25092ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x52e9a10) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x52e9a10) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x52e9a10) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0a25093700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f0a23f90700 (LWP 2178)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a480082f0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a23f8fca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x539b130) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x539b130) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x539b130) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0a23f90700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f0a22e8d700 (LWP 2179)):
#0  0x0000003adf6f666d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf24a3ec in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a50001230, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a22e8cca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x54b0ac0) at thread/qthread.cpp:503
#6  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x54b0ac0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x54b0ac0) at thread/qthread_unix.cpp:337
#8  0x0000003ae0207555 in start_thread (arg=0x7f0a22e8d700) at pthread_create.c:333
#9  0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f0a21d8a700 (LWP 2180)):
#0  0x00007f0b61b6fb3e in timerSourcePrepare(GSource*, gint*) (timeout=0x7f0a21d89ae4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#1  0x00007f0b61b6fb3e in timerSourcePrepare(GSource*, gint*) (source=<optimized out>, timeout=0x7f0a21d89ae4) at kernel/qeventdispatcher_glib.cpp:160
#2  0x0000003adf24998d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a31b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a5c003160, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a21d89ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x55932a0) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x55932a0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x55932a0) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0a21d8a700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f0a20c87700 (LWP 2181)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a58003160, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a20c86ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x5695380) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x5695380) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x5695380) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0a20c87700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f0a1fb84700 (LWP 2182)):
#0  0x0000003adf6f22ed in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003adf28dd90 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x0000003adf249ee4 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x0000003adf24a390 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f0a600013e0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f0a1fb83ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f0b61934ff4 in QThread::exec() (this=this@entry=0x57736d0) at thread/qthread.cpp:503
#8  0x0000003af96c3935 in QQmlThreadPrivate::run() (this=0x57736d0) at /usr/src/debug/qtdeclarative-opensource-src-5.4.1/src/qml/qml/ftw/qqmlthread.cpp:141
#9  0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x57736d0) at thread/qthread_unix.cpp:337
#10 0x0000003ae0207555 in start_thread (arg=0x7f0a1fb84700) at pthread_create.c:333
#11 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f0a1af32700 (LWP 3964)):
[KCrash Handler]
#6  0x00007f0b61af5dd6 in QJsonPrivate::Object::indexOf(QString const&, bool*) (key=..., this=0x7f0a7068437c) at json/qjson_p.h:645
#7  0x00007f0b61af5dd6 in QJsonPrivate::Object::indexOf(QString const&, bool*) (this=0x7f0a70034308, key=..., exists=exists@entry=0x7f0a1af31307) at json/qjson.cpp:183
#8  0x00007f0b61af8433 in QJsonObject::value(QString const&) const (this=this@entry=0x7f0a7005f3c8, key=...) at json/qjsonobject.cpp:279
#9  0x00007f0b61b10dfe in QLibraryPrivate::updatePluginState() (this=0x7f0a7005f390) at plugin/qlibrary.cpp:737
#10 0x00007f0b61b02a80 in QPluginLoader::setFileName(QString const&) (this=this@entry=0x7f0a1af31790, fileName=...) at plugin/qpluginloader.cpp:349
#11 0x00007f0b61b040b9 in QPluginLoader::QPluginLoader(QString const&, QObject*) (this=0x7f0a1af31790, fileName=..., parent=<optimized out>) at plugin/qpluginloader.cpp:150
#12 0x0000003af704ba05 in KPluginMetaData::KPluginMetaData(QString const&) (this=0x7f0a1af31800, file=...) at ../../../src/lib/plugin/kpluginmetadata.cpp:75
#13 0x0000003af7046d94 in std::_Function_handler<void(const QString&), KPluginLoader::findPlugins(const QString&, std::function<bool(const KPluginMetaData&)>)::<lambda(const QString&)> >::_M_invoke(const std::_Any_data &, const QString &) (pluginPath=..., __closure=0x7f0a1af31940) at ../../../src/lib/plugin/kpluginloader.cpp:266
#14 0x0000003af7046d94 in std::_Function_handler<void(const QString&), KPluginLoader::findPlugins(const QString&, std::function<bool(const KPluginMetaData&)>)::<lambda(const QString&)> >::_M_invoke(const std::_Any_data &, const QString &) (__functor=..., __args#0=...) at /usr/include/c++/5.0.0/functional:1871
#15 0x0000003af704644b in KPluginLoader::forEachPlugin(QString const&, std::function<void (QString const&)>) (__args#0=..., this=0x7f0a1af31940) at /usr/include/c++/5.0.0/functional:2271
#16 0x0000003af704644b in KPluginLoader::forEachPlugin(QString const&, std::function<void (QString const&)>) (directory=..., callback=...) at ../../../src/lib/plugin/kpluginloader.cpp:256
#17 0x0000003af7046d04 in KPluginLoader::findPlugins(QString const&, std::function<bool (KPluginMetaData const&)>) (directory=..., filter=...) at ../../../src/lib/plugin/kpluginloader.cpp:274
#18 0x0000003af7e18887 in KPackage::PackageLoader::loadPackageStructure(QString const&) (this=this@entry=0x1cbb0b0, packageFormat=...) at ../../../src/kpackage/packageloader.cpp:315
#19 0x0000003af7e19a8c in KPackage::PackageLoader::loadPackage(QString const&, QString const&) (this=0x1cbb0b0, packageFormat=..., packagePath=...) at ../../../src/kpackage/packageloader.cpp:167
#20 0x00007f0a75cd7463 in BackgroundFinder::run() (this=0x632d240) at ../../../wallpapers/image/backgroundlistmodel.cpp:512
#21 0x00007f0b61939ede in QThreadPrivate::start(void*) (arg=0x632d240) at thread/qthread_unix.cpp:337
#22 0x0000003ae0207555 in start_thread (arg=0x7f0a1af32700) at pthread_create.c:333
#23 0x0000003adf701f3d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f0b6019b900 (LWP 1910)):
#0  0x0000003ae020c530 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000003ae2a0a3d9 in _xcb_conn_wait (c=c@entry=0x1c3a5b0, cond=cond@entry=0x7ffe7001bcd0, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:427
#2  0x0000003ae2a0ba8f in wait_for_reply (c=c@entry=0x1c3a5b0, request=7872, e=e@entry=0x7ffe7001bda0) at xcb_in.c:491
#3  0x0000003ae2a0bba1 in xcb_wait_for_reply (c=c@entry=0x1c3a5b0, request=7872, e=e@entry=0x7ffe7001bda0) at xcb_in.c:521
#4  0x0000003ae2e431f7 in _XReply (dpy=dpy@entry=0x1c39220, rep=rep@entry=0x7ffe7001bdf0, extra=extra@entry=0, discard=discard@entry=1) at xcb_io.c:602
#5  0x0000003ae3a0a07a in XSyncQueryCounter (dpy=0x1c39220, counter=112, value_return=0x7ffe7001be50) at XSync.c:530
#6  0x0000003c15a07154 in XSyncBasedPoller::forcePollRequest() (this=<optimized out>) at ../../src/xsyncbasedpoller.cpp:217
#7  0x0000003c15a07154 in XSyncBasedPoller::forcePollRequest() (this=<optimized out>) at ../../src/xsyncbasedpoller.cpp:211
#8  0x00007f0a383dd2b2 in PowermanagementEngine::updateSourceEvent(QString const&) (this=0x49c9b90, source=...) at ../../../dataengines/powermanagement/powermanagementengine.cpp:367
#9  0x0000003c1525a2a6 in Plasma::DataEnginePrivate::internalUpdateSource(Plasma::DataContainer*) (this=0x49cc620, source=0x49ad680) at ../../../src/plasma/dataengine.cpp:480
#10 0x00007f0b61b49c46 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x49ad680, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe7001c020) at kernel/qobject.cpp:3716
#11 0x00007f0b61b4a447 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=<optimized out>, m=m@entry=0x3c154c1ec0 <Plasma::DataContainer::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe7001c020) at kernel/qobject.cpp:3582
#12 0x0000003c15254c42 in Plasma::DataContainer::updateRequested(Plasma::DataContainer*) (this=<optimized out>, _t1=0x49ad680) at ./moc_datacontainer.cpp:246
#13 0x0000003c152634b8 in Plasma::SignalRelay::timerEvent(QTimerEvent*) (this=0x49d6330, event=<optimized out>) at ../../../src/plasma/private/datacontainer_p.cpp:154
#14 0x00007f0b61b4aac3 in QObject::event(QEvent*) (this=0x49d6330, e=<optimized out>) at kernel/qobject.cpp:1267
#15 0x00007f0b62c977cc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x1c2f260, receiver=receiver@entry=0x49d6330, e=e@entry=0x7ffe7001c360) at kernel/qapplication.cpp:3720
#16 0x00007f0b62c9ce70 in QApplication::notify(QObject*, QEvent*) (this=0x7ffe7001c720, receiver=0x49d6330, e=0x7ffe7001c360) at kernel/qapplication.cpp:3503
#17 0x00007f0b61b1924b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffe7001c720, receiver=0x49d6330, event=event@entry=0x7ffe7001c360) at kernel/qcoreapplication.cpp:935
#18 0x00007f0b61b6f55d in QTimerInfoList::activateTimers() (event=0x7ffe7001c360, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:228
#19 0x00007f0b61b6f55d in QTimerInfoList::activateTimers() (this=0x1c71500) at kernel/qtimerinfo_unix.cpp:635
#20 0x00007f0b61b6fa61 in timerSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#21 0x0000003adf24a0ba in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#22 0x0000003adf24a450 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#23 0x0000003adf24a4fc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#24 0x00007f0b61b7075b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1c71640, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#25 0x00007f0b61b16a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffe7001c5a0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#26 0x00007f0b61b1e5fc in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1188
#27 0x00007f0b62030a3c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1507
#28 0x00007f0b62c93c95 in QApplication::exec() () at kernel/qapplication.cpp:2956
#29 0x000000000042eb0f in main(int, char**) (argc=2, argv=<optimized out>) at ../../shell/main.cpp:154

Reported using DrKonqi