Application: kontact (5.2.3)

Qt Version: 5.7.0
Frameworks Version: 5.24.0
Operating System: Linux 4.1.27-24-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
I was manually deleting the local trash folder when Kontact crashed today.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff5469f47c0 (LWP 3214))]

Thread 23 (Thread 0x7ff529789700 (LWP 3215)):
#0  0x00007ff5436abbfd in poll () at /lib64/libc.so.6
#1  0x00007ff53ce35422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007ff53ce3700f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007ff52c1103e9 in QXcbEventReader::run() (this=0xc5db10) at qxcbconnection.cpp:1337
#4  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0xc5db10) at thread/qthread_unix.cpp:344
#5  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7ff520dad700 (LWP 3216)):
#0  0x00007ff53ac91cf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff53ac4f4b9 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4fd80 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff51c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff520dacde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007ff5428f44b5 in  () at /usr/lib64/libQt5DBus.so.5
#8  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x7ff542b5dd00) at thread/qthread_unix.cpp:344
#9  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7ff51b5ef700 (LWP 3217)):
#0  0x00007ff53ca1603f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff540fb25d3 in WTF::TCMalloc_PageHeap::scavengerThread() () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007ff540fb25f9 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7ff4d2429700 (LWP 3219)):
#0  0x00007ff5436abbfd in poll () at /lib64/libc.so.6
#1  0x00007ff53ac4fe64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4cc0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4d2428e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0xe1e900) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7ff4d0aa7700 (LWP 3220)):
#0  0x00007ff53ca1603f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff540cbe46d in JSC::BlockAllocator::blockFreeingThreadMain() () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007ff540fe10a1 in wtfThreadEntryPoint() () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7ff4cbfff700 (LWP 3221)):
#0  0x00007ff53ca1603f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff540cbf443 in JSC::GCThread::gcThreadMain() () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007ff540fe10a1 in wtfThreadEntryPoint() () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7ff4cb7fe700 (LWP 3222)):
#0  0x00007ff53ca1603f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff540cbf443 in JSC::GCThread::gcThreadMain() () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007ff540fe10a1 in wtfThreadEntryPoint() () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7ff4caffd700 (LWP 3223)):
#0  0x00007ff53ca1603f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff540cbf443 in JSC::GCThread::gcThreadMain() () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007ff540fe10a1 in wtfThreadEntryPoint() () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7ff4b20c6700 (LWP 3224)):
#0  0x00007ff5436abbfd in poll () at /lib64/libc.so.6
#1  0x00007ff53ac4fe64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4ac0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4b20c5e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x11b9f70) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7ff4b18c5700 (LWP 3226)):
#0  0x00007ff53ac4fa30 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff53ac4fed8 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4a40008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4b18c4e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x11490d0) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7ff4b10c4700 (LWP 3228)):
#0  0x00007ff53ac91cf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff53ac4f8fc in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4fdf8 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4a80008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4b10c3e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x121dba0) at thread/qthread_unix.cpp:344
#8  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7ff4a3fff700 (LWP 3230)):
#0  0x00007ff5436c05ef in __libc_enable_asynccancel () at /lib64/libc.so.6
#1  0x00007ff5436a7cc2 in read () at /lib64/libc.so.6
#2  0x00007ff532878073 in  () at /usr/lib64/tls/libnvidia-tls.so.367.35
#3  0x00007ff53ac90b60 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007ff53ac4f999 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#5  0x00007ff53ac4fdf8 in  () at /usr/lib64/libglib-2.0.so.0
#6  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#7  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff49c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4a3ffee10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#9  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#10 0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x1099710) at thread/qthread_unix.cpp:344
#11 0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#12 0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7ff4a37fe700 (LWP 3249)):
#0  0x00007ff5436abbfd in poll () at /lib64/libc.so.6
#1  0x00007ff53ac4fe64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4940008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4a37fde10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x1907e20) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7ff4a2ffd700 (LWP 3251)):
#0  0x00007ff5436abbfd in poll () at /lib64/libc.so.6
#1  0x00007ff53ac4fe64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4980008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4a2ffce10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x18aa250) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7ff4a16e7700 (LWP 3255)):
#0  0x00007ff5436abc0c in poll () at /lib64/libc.so.6
#1  0x00007ff53ac4fe64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff48c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4a16e6e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x18a6c20) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7ff4a0ee6700 (LWP 3257)):
#0  0x00007ff5436abbfd in poll () at /lib64/libc.so.6
#1  0x00007ff53ac4fe64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4900008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff4a0ee5e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x104ec40) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7ff48bfff700 (LWP 3259)):
#0  0x00007fff8809fd33 in clock_gettime ()
#1  0x00007ff5436c0c7d in clock_gettime () at /lib64/libc.so.6
#2  0x00007ff5440668f1 in qt_gettime() (ts=0x7ff48bffeba0, clock=1) at tools/qelapsedtimer_unix.cpp:109
#3  0x00007ff5440668f1 in qt_gettime() (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:164
#4  0x00007ff5440668f1 in qt_gettime() () at tools/qelapsedtimer_unix.cpp:173
#5  0x00007ff5441c6609 in QTimerInfoList::updateCurrentTime() (this=this@entry=0x7ff484003060) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007ff5441c6b85 in QTimerInfoList::timerWait(timespec&) (this=0x7ff484003060, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007ff5441c7d4e in timerSourcePrepare(GSource*, gint*) (timeout=0x7ff48bffec54, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:132
#8  0x00007ff5441c7d4e in timerSourcePrepare(GSource*, gint*) (source=<optimized out>, timeout=0x7ff48bffec54) at kernel/qeventdispatcher_glib.cpp:165
#9  0x00007ff53ac4f4ad in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#10 0x00007ff53ac4fd80 in  () at /usr/lib64/libglib-2.0.so.0
#11 0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#12 0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4840008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff48bffee10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#14 0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#15 0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x1a69310) at thread/qthread_unix.cpp:344
#16 0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#17 0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7ff48adda700 (LWP 3261)):
#0  0x00007ff53ac4f931 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff53ac4fdf8 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff47c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff48add9e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0xfaa190) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7ff48a5d9700 (LWP 3263)):
#0  0x00007ff5436abbfd in poll () at /lib64/libc.so.6
#1  0x00007ff53ac4fe64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4800008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff48a5d8e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x1c97d90) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7ff48935a700 (LWP 3456)):
#0  0x00007ff53ac91cf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff53ac4eee0 in g_main_context_acquire () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4fd25 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4740008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff489359e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#6  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x15ea560) at thread/qthread_unix.cpp:344
#8  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7ff47bfff700 (LWP 3459)):
#0  0x00007ff5436abbfd in poll () at /lib64/libc.so.6
#1  0x00007ff53ac4fe64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff4700008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff47bffee10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x127a710) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7ff47a917700 (LWP 3626)):
#0  0x00007ff53ac91d14 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff53ac4fe0e in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5441c7f7b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7ff46c006800, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ff47a916e10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#5  0x00007ff543fbe06a in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007ff543fc2899 in QThreadPrivate::start(void*) (arg=0x3b4cf60) at thread/qthread_unix.cpp:344
#7  0x00007ff53ca120a4 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff5436b402d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7ff5469f47c0 (LWP 3214)):
[KCrash Handler]
#6  0x00007ff523dcb6c4 in KNotification::flags() const () at /usr/lib64/libKF5Notifications.so.5
#7  0x00007ff523de86f7 in  () at /usr/lib64/libKF5Notifications.so.5
#8  0x00007ff523dee175 in  () at /usr/lib64/libKF5Notifications.so.5
#9  0x00007ff5441a16e5 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x1250350, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3740
#10 0x00007ff5233ceb35 in  () at /usr/lib64/libphonon4qt5.so.4
#11 0x00007ff5441a2df6 in QObject::event(QEvent*) (this=0x1250350, e=<optimized out>) at kernel/qobject.cpp:1263
#12 0x00007ff545080afc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x1250350, e=0x49ebd60) at kernel/qapplication.cpp:3799
#13 0x00007ff545087a80 in QApplication::notify(QObject*, QEvent*) (this=0x7fff88012a30, receiver=0x1250350, e=0x49ebd60) at kernel/qapplication.cpp:3556
#14 0x00007ff5441795f5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x1250350, event=event@entry=0x49ebd60) at kernel/qcoreapplication.cpp:988
#15 0x00007ff54417b653 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (event=0x49ebd60, receiver=<optimized out>) at kernel/qcoreapplication.h:231
#16 0x00007ff54417b653 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xc28220) at kernel/qcoreapplication.cpp:1649
#17 0x00007ff54417bb98 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1503
#18 0x00007ff5441c8713 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0xcac3b0) at kernel/qeventdispatcher_glib.cpp:276
#19 0x00007ff53ac4fc84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#20 0x00007ff53ac4fed8 in  () at /usr/lib64/libglib-2.0.so.0
#21 0x00007ff53ac4ff7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#22 0x00007ff5441c7f5c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0xcaac40, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#23 0x00007ff5441778cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fff88012790, flags=..., flags@entry=...) at kernel/qeventloop.cpp:210
#24 0x00007ff54417f6c6 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1261
#25 0x00007ff5446c3f9c in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1639
#26 0x00007ff545080a55 in QApplication::exec() () at kernel/qapplication.cpp:2975
#27 0x0000000000404771 in main(int, char**) (argc=1, argv=0x7fff88012b78) at /usr/src/debug/kdepim-16.04.3/kontact/src/main.cpp:223

Reported using DrKonqi