Application: kontact (5.4.3)

Qt Version: 5.7.1
Frameworks Version: 5.33.0
Operating System: Linux 4.10.8-200.fc25.x86_64 x86_64
Distribution: "Fedora release 25 (Twenty Five)"

-- Information about the crash:
- What I was doing when the application crashed:
I have updated Fedora Version from 23 to 24, and finally to 25.
I hat the similiar problem with Fedora 24 (After start), the Kontact have Crashed,
Now the crash happend also but much Faster.
I was able to send mail but after few seconds Kontact Crashed again.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f90e3a8c640 (LWP 8546))]

Thread 29 (Thread 0x7f8fdca14700 (LWP 8620)):
#0  0x00007ffcc3357b12 in clock_gettime ()
#1  0x00007f90faad2726 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f90fb767b31 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x00007f90fb8bcd99 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007f90fb8bd195 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x00007f90fb8be38c in timerSourcePrepareHelper(GTimerSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x00007f90fb8be455 in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#7  0x00007f90ede1b69d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#8  0x00007f90ede1c08b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#9  0x00007f90ede1c27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#10 0x00007f90fb8be6eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x00007f90fb86f68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#12 0x00007f90fb6cc5e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#13 0x00007f90fb6d09ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#15 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 28 (Thread 0x7f8fde5b1700 (LWP 8619)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e32c49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e33289 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e33440 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 27 (Thread 0x7f8fdf84f700 (LWP 8607)):
#0  0x00007f90faab3bed in read () at /lib64/libc.so.6
#1  0x00007f90ede604d0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f90ede1bc83 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f90ede1c104 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f90ede1c27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f90fb8be6eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f90fb86f68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f90fb6cc5e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f90fb6d09ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7f8fe0050700 (LWP 8596)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e32c49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e33289 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e33440 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7f8fe6515700 (LWP 8581)):
#0  0x00007f90faab3bed in read () at /lib64/libc.so.6
#1  0x00007f90ede604d0 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f90ede1bc83 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f90ede1c104 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f90ede1c27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f90fb8be6eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f90fb86f68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f90fb6cc5e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f90fb6d09ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7f8fe6d16700 (LWP 8579)):
#0  0x00007ffcc3357b12 in clock_gettime ()
#1  0x00007f90faad2726 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f90fb767b31 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x00007f90fb8bcd99 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007f90fb8bd195 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x00007f90fb8be38c in timerSourcePrepareHelper(GTimerSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x00007f90fb8be455 in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#7  0x00007f90ede1b69d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#8  0x00007f90ede1c08b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#9  0x00007f90ede1c27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#10 0x00007f90fb8be6eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x00007f90fb86f68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#12 0x00007f90fb6cc5e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#13 0x00007f90fb6d09ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#15 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7f8fe7517700 (LWP 8578)):
#0  0x00007ffcc3357b12 in clock_gettime ()
#1  0x00007f90faad2726 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f90fb767b31 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x00007f90fb8bcd99 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007f90fb8be2bf in timerSourceCheckHelper(GTimerSource*) () at /lib64/libQt5Core.so.5
#5  0x00007f90ede1bbc9 in g_main_context_check () at /lib64/libglib-2.0.so.0
#6  0x00007f90ede1c104 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#7  0x00007f90ede1c27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#8  0x00007f90fb8be6eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#9  0x00007f90fb86f68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#10 0x00007f90fb6cc5e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#11 0x00007f90fb6d09ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#12 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#13 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7f9095ffb700 (LWP 8575)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90e5b8e2f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f90e5b8e339 in  () at /lib64/libQt5Script.so.5
#3  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#4  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f90967fc700 (LWP 8573)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e32c49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e33289 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e33440 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f9096ffd700 (LWP 8572)):
#0  0x00007ffcc3357b12 in clock_gettime ()
#1  0x00007f90faad2726 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f90ec1e178d in gettime () at /lib64/libevent-2.0.so.5
#3  0x00007f90ec1e4171 in event_base_loop () at /lib64/libevent-2.0.so.5
#4  0x00007f90f6de097e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f6e339fa in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f90977fe700 (LWP 8571)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e28125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e281e5 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e09e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6e339fa in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f9097fff700 (LWP 8570)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f69d41c0 in mojo::system::Waiter::Wait(unsigned long, unsigned long*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f69bcff0 in mojo::system::Core::WaitManyInternal(unsigned int const*, unsigned int const*, unsigned int, unsigned long, unsigned int*, mojo::system::HandleSignalsState*) () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f69bd37b in mojo::system::Core::Wait(unsigned int, unsigned int, unsigned long, mojo::system::UserPointer<MojoHandleSignalsState>) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f69b900a in MojoWait () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f7b3282e in mojo::common::MessagePumpMojo::WaitForReadyHandles(mojo::common::MessagePumpMojo::RunState const&) const () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f7b34be4 in mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState const&, bool) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f7b34c35 in mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*, base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f7b34d09 in mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f90f6e339fa in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#14 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f90a8ff9700 (LWP 8569)):
#0  0x00007f90d2597f40 in pa_pstream_ref () at /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#1  0x00007f90d25986f4 in do_pstream_read_write () at /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#2  0x00007f90d2598ac9 in srb_callback () at /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#3  0x00007f90d259934a in srbchannel_rwloop () at /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#4  0x00007f90d2a0074c in pa_mainloop_dispatch () at /lib64/libpulse.so.0
#5  0x00007f90d2a00b4c in pa_mainloop_iterate () at /lib64/libpulse.so.0
#6  0x00007f90d2a00bf0 in pa_mainloop_run () at /lib64/libpulse.so.0
#7  0x00007f90d2a0ebd9 in thread () at /lib64/libpulse.so.0
#8  0x00007f90d25a91d8 in internal_thread_func () at /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#9  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f90a97fa700 (LWP 8568)):
#0  0x00007f90f28bd809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e27912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e281b5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e09e51 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6e339fa in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f90a9ffb700 (LWP 8567)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f64eda0d in cc::SingleThreadTaskGraphRunner::Run() () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e3331e in base::DelegateSimpleThread::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e33440 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f90aa7fc700 (LWP 8566)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e28125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e281e5 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e09e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6e339fa in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f90aaffd700 (LWP 8565)):
#0  0x00007f90faab3c4d in write () at /lib64/libc.so.6
#1  0x00007f90faa36a57 in _IO_new_file_write () at /lib64/libc.so.6
#2  0x00007f90faa37368 in __GI__IO_file_xsputn () at /lib64/libc.so.6
#3  0x00007f90faa0ca45 in buffered_vfprintf () at /lib64/libc.so.6
#4  0x00007f90faa09bf5 in vfprintf () at /lib64/libc.so.6
#5  0x00007f90faad3bb9 in __fprintf_chk () at /lib64/libc.so.6
#6  0x00007f90ec1f586e in _warn_helper () at /lib64/libevent-2.0.so.5
#7  0x00007f90ec1f5a64 in event_warn () at /lib64/libevent-2.0.so.5
#8  0x00007f90ec1fa1e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#9  0x00007f90ec1e418a in event_base_loop () at /lib64/libevent-2.0.so.5
#10 0x00007f90f6de0ac5 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f90f6114fa8 in content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#14 0x00007f90f61150eb in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#15 0x00007f90f6e33a78 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#16 0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#17 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#18 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f90ab7fe700 (LWP 8564)):
#0  0x00007f90faad1f5c in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f90faad3b64 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f90ec1f586e in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f90ec1f5a64 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f90ec1fa1e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f90ec1e418a in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f90f6de0ac5 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f90f6114ef8 in content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f90f611514b in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f90f6e33a78 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#14 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f90abfff700 (LWP 8563)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e28125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e281e5 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e09e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6114e48 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f611513b in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f6e33a78 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#11 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f90b8ff9700 (LWP 8562)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e28125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e281e5 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e09e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6114d98 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f611512b in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f6e33a78 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#11 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f90b97fa700 (LWP 8561)):
#0  0x00007f90faad1f5c in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f90faad3b64 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f90ec1f586e in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f90ec1f5a64 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f90ec1fa1e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f90ec1e418a in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f90f6de097e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f90f6114ce8 in content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f90f611511b in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f90f6e33a78 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#14 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f90b9ffb700 (LWP 8560)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e28125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e281e5 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e09e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6114c38 in content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f611510b in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f6e33a78 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#11 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f90ba7fc700 (LWP 8559)):
#0  0x00007f90f28bd809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e27912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e364f0 in base::PosixDynamicThreadPool::WaitForTask() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e36a23 in base::(anonymous namespace)::WorkerThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f90baffd700 (LWP 8558)):
#0  0x00007f90f28bd809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e27912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e364f0 in base::PosixDynamicThreadPool::WaitForTask() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e36a23 in base::(anonymous namespace)::WorkerThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f90bb7fe700 (LWP 8557)):
#0  0x00007f90f28bd460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f90f6e28125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f90f6e281e5 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f90f6e09e13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6e339fa in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f90bbfff700 (LWP 8556)):
#0  0x00007ffcc3357b12 in clock_gettime ()
#1  0x00007f90faad2726 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f90ec1e178d in gettime () at /lib64/libevent-2.0.so.5
#3  0x00007f90ec1e4171 in event_base_loop () at /lib64/libevent-2.0.so.5
#4  0x00007f90f6de0a12 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f90f6e1b84a in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f90f6e062e5 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f90f6e339fa in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f90f6e2ffdc in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f90cb050700 (LWP 8549)):
#0  0x00007f90ede1b6a1 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#1  0x00007f90ede1c08b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f90ede1c27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f90fb8be6eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f90fb86f68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f90fb6cc5e3 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f91006e7739 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#7  0x00007f90fb6d09ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f90d8ea8700 (LWP 8548)):
#0  0x00007f90faab801d in poll () at /lib64/libc.so.6
#1  0x00007f90f1323d10 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f90f1325aa9 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f90dcec6d69 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f90fb6d09ca in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f90f28b76ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f90faac3f7f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f90e3a8c640 (LWP 8546)):
[KCrash Handler]
#6  0x00007f90fa9f191f in raise () at /lib64/libc.so.6
#7  0x00007f90fa9f351a in abort () at /lib64/libc.so.6
#8  0x00007f90fa9e9da7 in __assert_fail_base () at /lib64/libc.so.6
#9  0x00007f90fa9e9e52 in  () at /lib64/libc.so.6
#10 0x00007f90ceb9dcd4 in  () at /lib64/libdrm_nouveau.so.2
#11 0x00007f90ceb9dc1b in nouveau_pushbuf_data () at /lib64/libdrm_nouveau.so.2
#12 0x00007f90ceb9dd6a in pushbuf_submit.isra () at /lib64/libdrm_nouveau.so.2
#13 0x00007f90ceb9e00f in pushbuf_flush () at /lib64/libdrm_nouveau.so.2
#14 0x00007f90ceb9ebc0 in nouveau_pushbuf_kick () at /lib64/libdrm_nouveau.so.2
#15 0x00007f90cf7a8b46 in nv50_flush () at /usr/lib64/dri/nouveau_dri.so
#16 0x00007f90cf412a3a in st_context_flush () at /usr/lib64/dri/nouveau_dri.so
#17 0x00007f90cf57560c in dri_flush () at /usr/lib64/dri/nouveau_dri.so
#18 0x00007f90d0f4cacc in dri2SwapBuffers () at /lib64/libGLX_mesa.so.0
#19 0x00007f90dcfb96bd in QGLXContext::swapBuffers(QPlatformSurface*) () at /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#20 0x00007f90fbbde33d in QOpenGLContext::swapBuffers(QSurface*) () at /lib64/libQt5Gui.so.5
#21 0x00007f90fbde6e98 in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () at /lib64/libQt5Gui.so.5
#22 0x00007f90dcee6c77 in QXcbBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () at /lib64/libQt5XcbQpa.so.5
#23 0x00007f90fc0bddad in QWidgetBackingStore::qt_flush(QWidget*, QRegion const&, QBackingStore*, QWidget*, QPoint const&, QPlatformTextureList*, QWidgetBackingStore*) () at /lib64/libQt5Widgets.so.5
#24 0x00007f90fc0bf3de in QWidgetBackingStore::flush(QWidget*) () at /lib64/libQt5Widgets.so.5
#25 0x00007f90fc0c12c4 in QWidgetBackingStore::doSync() () at /lib64/libQt5Widgets.so.5
#26 0x00007f90fc0c147f in QWidgetBackingStore::sync() () at /lib64/libQt5Widgets.so.5
#27 0x00007f90fc0e03af in QWidgetPrivate::syncBackingStore() () at /lib64/libQt5Widgets.so.5
#28 0x00007f90fc0f8898 in QWidget::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#29 0x00007f90fc1f82ab in QMainWindow::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#30 0x00007f90feb26747 in KMainWindow::event(QEvent*) () at /lib64/libKF5XmlGui.so.5
#31 0x00007f90feb6be65 in KXmlGuiWindow::event(QEvent*) () at /lib64/libKF5XmlGui.so.5
#32 0x00007f90fc0b0ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#33 0x00007f90fc0b8671 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#34 0x00007f90fb8706fa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#35 0x00007f90fb872de0 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#36 0x00007f90fb8be653 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#37 0x00007f90ede1be52 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#38 0x00007f90ede1c1d0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#39 0x00007f90ede1c27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#40 0x00007f90fb8be6cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#41 0x00007f90fb86f68a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#42 0x00007f90fb87718c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#43 0x00005636aff2c4f7 in main ()

Reported using DrKonqi