Application: kontact (5.3.0 (QtWebEngine))

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.7.3-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
Selected within the email to show in HTML. A short pause and then Kontact crashes. This happens every time.

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 0x7fe760c18600 (LWP 18078))]

Thread 35 (Thread 0x7fe602c69700 (LWP 18326)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe659827353 in ?? () from /usr/lib64/libQt5WebKit.so.5
#2  0x00007fe659b5d971 in ?? () from /usr/lib64/libQt5WebKit.so.5
#3  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 34 (Thread 0x7fe60346a700 (LWP 18325)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe659826201 in ?? () from /usr/lib64/libQt5WebKit.so.5
#2  0x00007fe659b5d971 in ?? () from /usr/lib64/libQt5WebKit.so.5
#3  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 33 (Thread 0x7fe644180700 (LWP 18324)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe659b2cc4b in ?? () from /usr/lib64/libQt5WebKit.so.5
#2  0x00007fe659b2cc89 in ?? () from /usr/lib64/libQt5WebKit.so.5
#3  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 32 (Thread 0x7fe64586d700 (LWP 18291)):
#0  0x00007fff7fbaeb74 in clock_gettime ()
#1  0x00007fe75d5c12a6 in clock_gettime () from /lib64/libc.so.6
#2  0x00007fe75df68d96 in ?? () from /usr/lib64/libQt5Core.so.5
#3  0x00007fe75e0e8639 in QTimerInfoList::updateCurrentTime() () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0e8be5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75e0e9f9e in ?? () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe758808569 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#7  0x00007fe758808f3b in ?? () from /usr/lib64/libglib-2.0.so.0
#8  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#9  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#10 0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#11 0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#12 0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#13 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 31 (Thread 0x7fe646daa700 (LWP 18148)):
#0  0x00007fe75d5a775d in read () from /lib64/libc.so.6
#1  0x00007fe75884bc00 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe758808ae6 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe758808fb4 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#7  0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#8  0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#9  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 30 (Thread 0x7fe649bd6700 (LWP 18126)):
#0  0x00007fff7fbaeb74 in clock_gettime ()
#1  0x00007fe75d5c12a6 in clock_gettime () from /lib64/libc.so.6
#2  0x00007fe75df68d96 in ?? () from /usr/lib64/libQt5Core.so.5
#3  0x00007fe75e0e8639 in QTimerInfoList::updateCurrentTime() () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0e8be5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75e0e9f9e in ?? () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe758808569 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#7  0x00007fe758808f3b in ?? () from /usr/lib64/libglib-2.0.so.0
#8  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#9  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#10 0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#11 0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#12 0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#13 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 29 (Thread 0x7fe64a3d7700 (LWP 18124)):
#0  0x00007fff7fbaeb74 in clock_gettime ()
#1  0x00007fe75d5c12a6 in clock_gettime () from /lib64/libc.so.6
#2  0x00007fe75df68d96 in ?? () from /usr/lib64/libQt5Core.so.5
#3  0x00007fe75e0e8639 in QTimerInfoList::updateCurrentTime() () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0e8be5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75e0e9f9e in ?? () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe758808569 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#7  0x00007fe758808f3b in ?? () from /usr/lib64/libglib-2.0.so.0
#8  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#9  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#10 0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#11 0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#12 0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#13 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 28 (Thread 0x7fe64d7c2700 (LWP 18119)):
#0  0x00007fe75884cfa9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fe758808fd2 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#7  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 27 (Thread 0x7fe64dfc3700 (LWP 18117)):
#0  0x00007fff7fbaeb74 in clock_gettime ()
#1  0x00007fe75d5c12a6 in clock_gettime () from /lib64/libc.so.6
#2  0x00007fe75df68d96 in ?? () from /usr/lib64/libQt5Core.so.5
#3  0x00007fe75e0e8639 in QTimerInfoList::updateCurrentTime() () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0e8be5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75e0e9f9e in ?? () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe758808569 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#7  0x00007fe758808f3b in ?? () from /usr/lib64/libglib-2.0.so.0
#8  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#9  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#10 0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#11 0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#12 0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#13 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 26 (Thread 0x7fe64ec04700 (LWP 18115)):
#0  0x00007fe75d5c0c82 in __libc_disable_asynccancel () from /lib64/libc.so.6
#1  0x00007fe75d5ab6f9 in poll () from /lib64/libc.so.6
#2  0x00007fe758809016 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 25 (Thread 0x7fe6539c0700 (LWP 18113)):
#0  0x00007fff7fbaeb74 in clock_gettime ()
#1  0x00007fe75d5c12a6 in clock_gettime () from /lib64/libc.so.6
#2  0x00007fe75df68d96 in ?? () from /usr/lib64/libQt5Core.so.5
#3  0x00007fe75e0e8639 in QTimerInfoList::updateCurrentTime() () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0e8be5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75e0e9f9e in ?? () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe758808569 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#7  0x00007fe758808f3b in ?? () from /usr/lib64/libglib-2.0.so.0
#8  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#9  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#10 0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#11 0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#12 0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#13 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7fe6541c1700 (LWP 18111)):
#0  0x00007fff7fbaeb74 in clock_gettime ()
#1  0x00007fe75d5c12a6 in clock_gettime () from /lib64/libc.so.6
#2  0x00007fe75df68d96 in ?? () from /usr/lib64/libQt5Core.so.5
#3  0x00007fe75e0e8639 in QTimerInfoList::updateCurrentTime() () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0e8be5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75e0e9f9e in ?? () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe758808569 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#7  0x00007fe758808f3b in ?? () from /usr/lib64/libglib-2.0.so.0
#8  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#9  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#10 0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#11 0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#12 0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#13 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7fe6549c2700 (LWP 18109)):
#0  0x00007fe75d5ab6ed in poll () from /lib64/libc.so.6
#1  0x00007fe758809016 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#7  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7fe655854700 (LWP 18108)):
#0  0x00007fe75d5ab6ed in poll () from /lib64/libc.so.6
#1  0x00007fe758809016 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#7  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7fe6e37fd700 (LWP 18107)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe74ae537e4 in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007fe74ae53829 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7fe6e3ffe700 (LWP 18103)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750bc5d49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bc6460 in base::SequencedWorkerPool::Worker::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750bc6630 in base::SimpleThread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7fe6f8ff9700 (LWP 18102)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750a1e850 in mojo::system::Waiter::Wait(unsigned long, unsigned int*) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750a0b10c in mojo::system::Core::WaitManyInternal(unsigned int const*, unsigned int const*, unsigned int, unsigned long, unsigned int*, mojo::system::HandleSignalsState*) () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750a0b5b7 in mojo::system::Core::WaitMany(mojo::system::UserPointer<unsigned int const>, mojo::system::UserPointer<unsigned int const>, unsigned int, unsigned long, mojo::system::UserPointer<unsigned int>, mojo::system::UserPointer<MojoHandleSignalsState>) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750a07e35 in MojoWaitMany () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe75210b937 in mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState const&, bool) () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe75210bb6e in mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*, base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe75210bca9 in mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fe750bc6ae6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#13 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7fe6f97fa700 (LWP 18101)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750bc5d49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bc6460 in base::SequencedWorkerPool::Worker::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750bc6630 in base::SimpleThread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7fe6f9ffb700 (LWP 18100)):
#0  0x00007fe75d5ab6ed in poll () from /lib64/libc.so.6
#1  0x00007fe73ad29bc1 in ?? () from /usr/lib64/libpulse.so.0
#2  0x00007fe73ad1b391 in pa_mainloop_poll () from /usr/lib64/libpulse.so.0
#3  0x00007fe73ad1ba2e in pa_mainloop_iterate () from /usr/lib64/libpulse.so.0
#4  0x00007fe73ad1bae0 in pa_mainloop_run () from /usr/lib64/libpulse.so.0
#5  0x00007fe73ad29b09 in ?? () from /usr/lib64/libpulse.so.0
#6  0x00007fe73a8c3108 in ?? () from /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#7  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7fe6fa7fc700 (LWP 18099)):
#0  0x00007fe75d5429c2 in _IO_str_init_static_internal () from /lib64/libc.so.6
#1  0x00007fe75d5c23b8 in __vsnprintf_chk () from /lib64/libc.so.6
#2  0x00007fe74952c853 in evutil_vsnprintf () from /usr/lib64/libevent-2.0.so.5
#3  0x00007fe74952b3ec in ?? () from /usr/lib64/libevent-2.0.so.5
#4  0x00007fe74952b6d4 in event_warn () from /usr/lib64/libevent-2.0.so.5
#5  0x00007fe74952fe58 in ?? () from /usr/lib64/libevent-2.0.so.5
#6  0x00007fe749519dfa in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#7  0x00007fe750b78b6e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fe750bc6ae6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#13 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7fe6faffd700 (LWP 18098)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750bbbaf5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bbbbc4 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750b9e473 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe750bc6ae6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7fe6fb7fe700 (LWP 18097)):
[KCrash Handler]
#6  list_del (item=<optimized out>) at ../../../../src/util/list.h:84
#7  nouveau_fence_trigger_work (fence=fence@entry=0x1af96d0) at nouveau_fence.c:57
#8  0x00007fe738dd60de in nouveau_fence_update (screen=screen@entry=0x1951e20, flushed=flushed@entry=true) at nouveau_fence.c:132
#9  0x00007fe738e642af in nv50_default_kick_notify (push=<optimized out>) at nv50/nv50_context.c:127
#10 0x00007fe73876e14d in pushbuf_submit (push=push@entry=0x192ee10, chan=<optimized out>, chan=<optimized out>) at pushbuf.c:328
#11 0x00007fe73876e3ef in pushbuf_flush (push=push@entry=0x192ee10) at pushbuf.c:405
#12 0x00007fe73876efa0 in nouveau_pushbuf_kick (push=0x192ee10, chan=<optimized out>) at pushbuf.c:779
#13 0x00007fe738e647c6 in PUSH_KICK (push=<optimized out>) at ./nouveau_winsys.h:59
#14 nv50_flush (pipe=0x31f40e0, fence=<optimized out>, flags=<optimized out>) at nv50/nv50_context.c:40
#15 0x00007fe738ac6a89 in _mesa_FenceSync (condition=<optimized out>, flags=<optimized out>) at main/syncobj.c:295
#16 0x00007fe7509f0f8d in gfx::GLFenceARB::GLFenceARB() () from /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007fe7509f0b06 in gfx::GLFence::Create() () from /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007fe75135f09e in gpu::gles2::CommandsCompletedQuery::End(int) () from /usr/lib64/libQt5WebEngineCore.so.5
#19 0x00007fe75133e724 in gpu::gles2::GLES2DecoderImpl::HandleEndQueryEXT(unsigned int, void const*) () from /usr/lib64/libQt5WebEngineCore.so.5
#20 0x00007fe751330bea in gpu::error::Error gpu::gles2::GLES2DecoderImpl::DoCommandsImpl<false>(unsigned int, void const*, int, int*) () from /usr/lib64/libQt5WebEngineCore.so.5
#21 0x00007fe75137753a in gpu::CommandParser::ProcessCommands(int) () from /usr/lib64/libQt5WebEngineCore.so.5
#22 0x00007fe751347c92 in gpu::GpuScheduler::PutChanged() () from /usr/lib64/libQt5WebEngineCore.so.5
#23 0x00007fe75081cfe9 in content::GpuCommandBufferStub::OnAsyncFlush(int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#24 0x00007fe750821c74 in content::GpuCommandBufferStub::OnMessageReceived(IPC::Message const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#25 0x00007fe75080169f in content::MessageRouter::RouteMessage(IPC::Message const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#26 0x00007fe75081bc13 in content::GpuChannel::HandleMessage() () from /usr/lib64/libQt5WebEngineCore.so.5
#27 0x00007fe750beb510 in base::debug::TaskAnnotator::RunTask(char const*, char const*, base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#28 0x00007fe750b9b4d4 in base::MessageLoop::RunTask(base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#29 0x00007fe750b9bcc9 in base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#30 0x00007fe750b9c182 in base::MessageLoop::DoWork() () from /usr/lib64/libQt5WebEngineCore.so.5
#31 0x00007fe750b9e429 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#32 0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#33 0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#34 0x00007fe750bc6ae6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#35 0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#36 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#37 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7fe6fbfff700 (LWP 18096)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe7503faf99 in cc::TaskGraphRunner::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bc6630 in base::SimpleThread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#5  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7fe718ff9700 (LWP 18095)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750bbbaf5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bbbbc4 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750b9e473 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe750bc6ae6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7fe7197fa700 (LWP 18094)):
#0  0x00007fe75d5a77bd in write () from /lib64/libc.so.6
#1  0x00007fe75d53eda7 in _IO_new_file_write () from /lib64/libc.so.6
#2  0x00007fe75d53e0f2 in new_do_write () from /lib64/libc.so.6
#3  0x00007fe75d53f4fe in __GI__IO_file_xsputn () from /lib64/libc.so.6
#4  0x00007fe75d516255 in buffered_vfprintf () from /lib64/libc.so.6
#5  0x00007fe75d5134d5 in vfprintf () from /lib64/libc.so.6
#6  0x00007fe75d5c26d9 in __fprintf_chk () from /lib64/libc.so.6
#7  0x00007fe74952b4de in ?? () from /usr/lib64/libevent-2.0.so.5
#8  0x00007fe74952b6d4 in event_warn () from /usr/lib64/libevent-2.0.so.5
#9  0x00007fe74952fe58 in ?? () from /usr/lib64/libevent-2.0.so.5
#10 0x00007fe749519dfa in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#11 0x00007fe750b78c02 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007fe750075ab8 in content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007fe750075c1b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007fe750bc6b68 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#19 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fe719ffb700 (LWP 18093)):
#0  0x00007fff7fbaeb74 in clock_gettime ()
#1  0x00007fe75d5c12a6 in clock_gettime () from /lib64/libc.so.6
#2  0x00007fe7495173fd in ?? () from /usr/lib64/libevent-2.0.so.5
#3  0x00007fe749519de1 in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#4  0x00007fe750b78ccb in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750075a08 in content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe750075c7b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fe750bc6b68 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#12 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7fe71a7fc700 (LWP 18092)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750bbbaf5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bbbbc4 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750b9e473 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe750075958 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750075c6b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe750bc6b68 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#11 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fe71affd700 (LWP 18091)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750bbbaf5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bbbbc4 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750b9e473 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe7500758a8 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750075c5b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe750bc6b68 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#11 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fe71b7fe700 (LWP 18090)):
#0  0x00007fe75d5c0bcb in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007fe75d5c2684 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007fe74952b4de in ?? () from /usr/lib64/libevent-2.0.so.5
#3  0x00007fe74952b6d4 in event_warn () from /usr/lib64/libevent-2.0.so.5
#4  0x00007fe74952fe58 in ?? () from /usr/lib64/libevent-2.0.so.5
#5  0x00007fe749519dfa in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#6  0x00007fe750b78b6e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fe7500757f8 in content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fe750075c4b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fe750bc6b68 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fe7297c2700 (LWP 18087)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750bbbaf5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bbbbc4 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750b9e473 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe750bc6ae6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fe729fc3700 (LWP 18086)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe750bbbaf5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fe750bbbbc4 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fe750b9e473 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe750075748 in content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750075c3b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe750bc6b68 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#11 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fe72a7c4700 (LWP 18085)):
#0  0x00007fff7fbaeb74 in clock_gettime ()
#1  0x00007fe75d5c12a6 in clock_gettime () from /lib64/libc.so.6
#2  0x00007fe7495173fd in ?? () from /usr/lib64/libevent-2.0.so.5
#3  0x00007fe749519de1 in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#4  0x00007fe750b78c02 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fe750baf0ba in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fe750b9aa55 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fe750bc6ae6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fe750bc323d in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fe7315fc700 (LWP 18080)):
#0  0x00007fe75884cfc4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fe758808640 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe758808f3b in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fe75e0eaaab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007fe75deb83c3 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007fe75c7c4985 in ?? () from /usr/lib64/libQt5DBus.so.5
#8  0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#9  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fe74133f700 (LWP 18079)):
#0  0x00007fe75d5ab6ed in poll () from /lib64/libc.so.6
#1  0x00007fe758f313f0 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fe758f33189 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fe74324e7a9 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fe75debd2e8 in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007fe759459454 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fe75d5b43ff in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fe760c18600 (LWP 18078)):
#0  0x00007fe75945f10f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe758f31667 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fe758f32eaf in ?? () from /usr/lib64/libxcb.so.1
#3  0x00007fe758f33021 in xcb_wait_for_reply64 () from /usr/lib64/libxcb.so.1
#4  0x00007fe75a7f7618 in _XReply () from /usr/lib64/libX11.so.6
#5  0x00007fe75a7f311d in XSync () from /usr/lib64/libX11.so.6
#6  0x00007fe757eb6ece in ?? () from /usr/lib64/libGL.so.1
#7  0x00007fe740937292 in ?? () from /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#8  0x00007fe75e627d86 in QOpenGLContext::swapBuffers(QSurface*) () from /usr/lib64/libQt5Gui.so.5
#9  0x00007fe75e8adfbc in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () from /usr/lib64/libQt5Gui.so.5
#10 0x00007fe74326e077 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#11 0x00007fe75ede57d8 in ?? () from /usr/lib64/libQt5Widgets.so.5
#12 0x00007fe75ede65ce in ?? () from /usr/lib64/libQt5Widgets.so.5
#13 0x00007fe75ede8e2a in ?? () from /usr/lib64/libQt5Widgets.so.5
#14 0x00007fe75ede8fe9 in ?? () from /usr/lib64/libQt5Widgets.so.5
#15 0x00007fe75ee0895f in QWidgetPrivate::syncBackingStore() () from /usr/lib64/libQt5Widgets.so.5
#16 0x00007fe75ee20678 in QWidget::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#17 0x00007fe75ef39b5b in QMainWindow::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#18 0x00007fe75ff616a7 in KMainWindow::event(QEvent*) () from /usr/lib64/libKF5XmlGui.so.5
#19 0x00007fe75ffa65b5 in KXmlGuiWindow::event(QEvent*) () from /usr/lib64/libKF5XmlGui.so.5
#20 0x00007fe75eddaacc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#21 0x00007fe75eddff6f in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#22 0x00007fe75e0949b0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#23 0x00007fe75e09693c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#24 0x00007fe75e0ea683 in ?? () from /usr/lib64/libQt5Core.so.5
#25 0x00007fe758808e17 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#26 0x00007fe758809080 in ?? () from /usr/lib64/libglib-2.0.so.0
#27 0x00007fe75880912c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#28 0x00007fe75e0eaa8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#29 0x00007fe75e0926fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#30 0x00007fe75e09af0c in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#31 0x00000000004046f7 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kdepim-16.08.1/kontact/src/main.cpp:223

Reported using DrKonqi