Application: kontact (5.4.3)

Qt Version: 5.7.1
Frameworks Version: 5.36.0
Operating System: Linux 4.12.8-200.fc25.x86_64 x86_64
Distribution: "Fedora release 25 (Twenty Five)"

-- Information about the crash:
I was just starting up Kontact.
I have four virtual desktops.  I started Kontact while in one, then remembered it was not the one I wished it to be in so I switched to another for it to start there.
I received the crash notification.
I switched back to the first one to start another app then, while writing this report noticed that in fact Kontact was indeed open.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd5b44e1940 (LWP 20576))]

Thread 26 (Thread 0x7fd58e7fc700 (LWP 26629)):
#0  0x00007fd5c34e4809 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6ba0002 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b76a99 in base::PosixDynamicThreadPool::WaitForTask() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b76f85 in base::(anonymous namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#6  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 25 (Thread 0x7fd58effd700 (LWP 26622)):
#0  0x00007fd5bea88894 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007fd5bea42bc1 in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007fd5bea43104 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007fd5bea4327c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007fd5cdaf16eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fd5cdaa268a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007fd5cd8ff5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007fd5cd9039ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#9  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7fd4b0a9e700 (LWP 20642)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b71e79 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b725d7 in base::SequencedWorkerPool::Worker::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b733d0 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#6  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7fd4b8db9700 (LWP 20610)):
#0  0x00007fd5bea4292c in g_main_context_query () from /lib64/libglib-2.0.so.0
#1  0x00007fd5bea430d8 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007fd5bea4327c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007fd5cdaf16eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007fd5cdaa268a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fd5cd8ff5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fd5cd9039ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#8  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7fd4b9dbb700 (LWP 20608)):
#0  0x00007fd5ccceaecd in poll () from /lib64/libc.so.6
#1  0x00007fd5bea43166 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007fd5bea4327c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007fd5cdaf16eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007fd5cdaa268a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fd5cd8ff5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fd5cd9039ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#8  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7fd4bcc57700 (LWP 20607)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5cd58a6ac in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /lib64/libstdc++.so.6
#2  0x00007fd4c0bc4546 in bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::threadRunLoop() () from /lib64/libQt5WebKit.so.5
#3  0x00007fd4c0bc4679 in bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::threadEntryPoint(bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*) () from /lib64/libQt5WebKit.so.5
#4  0x00007fd5cd59076f in ?? () from /lib64/libstdc++.so.6
#5  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#6  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7fd55dffb700 (LWP 20606)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5b61ba2f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQt5Script.so.5
#2  0x00007fd5b61ba339 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQt5Script.so.5
#3  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#4  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7fd55e7fc700 (LWP 20603)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b71e79 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b725d7 in base::SequencedWorkerPool::Worker::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b733d0 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#6  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7fd55effd700 (LWP 20602)):
#0  0x00007fd5a3b6d82a in do_read () from /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#1  0x00007fd5a3b7072b in do_pstream_read_write () from /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#2  0x00007fd5a3b70ac9 in srb_callback () from /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#3  0x00007fd5a3b7134a in srbchannel_rwloop () from /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#4  0x00007fd5a3dd374c in pa_mainloop_dispatch () from /lib64/libpulse.so.0
#5  0x00007fd5a3dd3b4c in pa_mainloop_iterate () from /lib64/libpulse.so.0
#6  0x00007fd5a3dd3bf0 in pa_mainloop_run () from /lib64/libpulse.so.0
#7  0x00007fd5a3de1bd9 in thread () from /lib64/libpulse.so.0
#8  0x00007fd5a3b811d8 in internal_thread_func () from /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#9  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#10 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7fd55f7fe700 (LWP 20601)):
#0  0x00007fd5ccd04ddc in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007fd5ccd06a14 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007fd5bbbf686e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007fd5bbbf6a64 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007fd5bbbfb1e8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007fd5bbbe518a in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007fd5c6b430be in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007fd5c6b73896 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#12 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7fd55ffff700 (LWP 20600)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b67cbe in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b67d74 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b42b03 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007fd5c6b73896 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#9  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7fd56cff9700 (LWP 20599)):
#0  0x00007fd5c34e4809 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6ba0002 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b67d4e in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b42b41 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007fd5c6b73896 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#9  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7fd56d7fa700 (LWP 20598)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c72f4b8d in cc::SingleThreadTaskGraphRunner::Run() () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b733d0 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#5  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7fd56e7fc700 (LWP 20597)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b71e79 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b725d7 in base::SequencedWorkerPool::Worker::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b733d0 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#6  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7fd56dffb700 (LWP 20596)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b67cbe in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b67d74 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b42b03 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007fd5c6b73896 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#9  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7fd56effd700 (LWP 20595)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007fd5c6281512 in QtWebEngineCore::NetworkDelegateQt::OnBeforeURLRequest(net::URLRequest*, base::Callback<void (int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, GURL*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c6fc0a26 in net::NetworkDelegate::NotifyBeforeURLRequest(net::URLRequest*, base::Callback<void (int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, GURL*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007fd5c70c760b in net::URLRequest::Start() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007fd5c6607a20 in content::ResourceLoader::StartRequestInternal() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007fd5c6607b30 in content::ResourceLoader::StartRequest() () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007fd5c65ff3fc in content::ResourceDispatcherHostImpl::StartLoading(content::ResourceRequestInfoImpl*, std::unique_ptr<content::ResourceLoader, std::default_delete<content::ResourceLoader> >) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007fd5c660215f in content::ResourceDispatcherHostImpl::BeginRequestInternal(std::unique_ptr<net::URLRequest, std::default_delete<net::URLRequest> >, std::unique_ptr<content::ResourceHandler, std::default_delete<content::ResourceHandler> >) () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007fd5c6602c58 in content::ResourceDispatcherHostImpl::ContinuePendingBeginRequest(int, content::ResourceRequest const&, base::Callback<void (content::SyncLoadResult const*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, int, net::HttpRequestHeaders const&, mojo::AssociatedInterfaceRequest<content::mojom::URLLoader>, mojo::AssociatedInterfacePtr<content::mojom::URLLoaderClient>, bool, int) () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007fd5c66049ff in content::ResourceDispatcherHostImpl::BeginRequest(int, content::ResourceRequest const&, base::Callback<void (content::SyncLoadResult const*), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, int, mojo::AssociatedInterfaceRequest<content::mojom::URLLoader>, mojo::AssociatedInterfacePtr<content::mojom::URLLoaderClient>) () from /lib64/libQt5WebEngineCore.so.5
#16 0x00007fd5c6604b34 in content::ResourceDispatcherHostImpl::OnRequestResourceInternal(int, int, content::ResourceRequest const&, mojo::AssociatedInterfaceRequest<content::mojom::URLLoader>, mojo::AssociatedInterfacePtr<content::mojom::URLLoaderClient>) () from /lib64/libQt5WebEngineCore.so.5
#17 0x00007fd5c6604cf3 in content::ResourceDispatcherHostImpl::OnRequestResource(int, int, content::ResourceRequest const&) () from /lib64/libQt5WebEngineCore.so.5
#18 0x00007fd5c660644d in content::ResourceDispatcherHostImpl::OnMessageReceived(IPC::Message const&, content::ResourceMessageFilter*) () from /lib64/libQt5WebEngineCore.so.5
#19 0x00007fd5c633005b in content::BrowserMessageFilter::Internal::OnMessageReceived(IPC::Message const&) () from /lib64/libQt5WebEngineCore.so.5
#20 0x00007fd5c729f7fe in IPC::(anonymous namespace)::TryFiltersImpl(std::vector<IPC::MessageFilter*, std::allocator<IPC::MessageFilter*> >&, IPC::Message const&) () from /lib64/libQt5WebEngineCore.so.5
#21 0x00007fd5c728cd45 in IPC::ChannelProxy::Context::TryFilters(IPC::Message const&) () from /lib64/libQt5WebEngineCore.so.5
#22 0x00007fd5c728ce51 in IPC::ChannelProxy::Context::OnMessageReceived(IPC::Message const&) () from /lib64/libQt5WebEngineCore.so.5
#23 0x00007fd5c728a6ce in IPC::ChannelMojo::OnMessageReceived(IPC::Message const&) () from /lib64/libQt5WebEngineCore.so.5
#24 0x00007fd5c7290009 in IPC::internal::MessagePipeReader::Receive(std::vector<unsigned char, std::allocator<unsigned char> > const&, base::Optional<std::vector<mojo::StructPtr<IPC::mojom::SerializedHandle>, std::allocator<mojo::StructPtr<IPC::mojom::SerializedHandle> > > >) () from /lib64/libQt5WebEngineCore.so.5
#25 0x00007fd5c6349caf in IPC::mojom::ChannelStubDispatch::Accept(IPC::mojom::Channel*, mojo::internal::SerializationContext*, mojo::Message*) () from /lib64/libQt5WebEngineCore.so.5
#26 0x00007fd5c72759b1 in mojo::InterfaceEndpointClient::HandleValidatedMessage(mojo::Message*) () from /lib64/libQt5WebEngineCore.so.5
#27 0x00007fd5c72959c8 in IPC::(anonymous namespace)::ChannelAssociatedGroupController::Accept(mojo::Message*) [clone .part.206] () from /lib64/libQt5WebEngineCore.so.5
#28 0x00007fd5c7273131 in mojo::Connector::ReadSingleMessage(unsigned int*) () from /lib64/libQt5WebEngineCore.so.5
#29 0x00007fd5c727328e in mojo::Connector::ReadAllAvailableMessages() () from /lib64/libQt5WebEngineCore.so.5
#30 0x00007fd5c72806f5 in mojo::Watcher::OnHandleReady(unsigned int) () from /lib64/libQt5WebEngineCore.so.5
#31 0x00007fd5c6b9b424 in base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) () from /lib64/libQt5WebEngineCore.so.5
#32 0x00007fd5c6b3faf0 in base::MessageLoop::RunTask(base::PendingTask*) () from /lib64/libQt5WebEngineCore.so.5
#33 0x00007fd5c6b4177d in base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) () from /lib64/libQt5WebEngineCore.so.5
#34 0x00007fd5c6b41c20 in base::MessageLoop::DoWork() () from /lib64/libQt5WebEngineCore.so.5
#35 0x00007fd5c6b430f2 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#36 0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#37 0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#38 0x00007fd5c6464ef8 in content::BrowserThreadImpl::IOThreadRun(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#39 0x00007fd5c64653f3 in content::BrowserThreadImpl::Run(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#40 0x00007fd5c6b73960 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#41 0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#42 0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#43 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fd56f7fe700 (LWP 20594)):
#0  0x00007fd5c34e4809 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6ba0002 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b67d4e in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b42b41 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007fd5c6464e48 in content::BrowserThreadImpl::CacheThreadRun(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c646545b in content::BrowserThreadImpl::Run(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c6b73960 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#11 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7fd56ffff700 (LWP 20593)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b67cbe in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b67d74 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b42b03 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007fd5c6464d98 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6465443 in content::BrowserThreadImpl::Run(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c6b73960 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#11 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fd58cff9700 (LWP 20592)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b67cbe in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b67d74 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b42b03 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007fd5c6464ce8 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6465433 in content::BrowserThreadImpl::Run(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c6b73960 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#11 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fd58d7fa700 (LWP 20591)):
#0  0x00007fd5ccce6afd in write () from /lib64/libc.so.6
#1  0x00007fd5ccc69a17 in _IO_new_file_write () from /lib64/libc.so.6
#2  0x00007fd5ccc6a328 in __GI__IO_file_xsputn () from /lib64/libc.so.6
#3  0x00007fd5ccc3fa05 in buffered_vfprintf () from /lib64/libc.so.6
#4  0x00007fd5ccc3cbb5 in vfprintf () from /lib64/libc.so.6
#5  0x00007fd5ccd06a69 in __fprintf_chk () from /lib64/libc.so.6
#6  0x00007fd5bbbf686e in _warn_helper () from /lib64/libevent-2.0.so.5
#7  0x00007fd5bbbf6a64 in event_warn () from /lib64/libevent-2.0.so.5
#8  0x00007fd5bbbfb1e8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#9  0x00007fd5bbbe518a in event_base_loop () from /lib64/libevent-2.0.so.5
#10 0x00007fd5c6b43152 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007fd5c6464c38 in content::BrowserThreadImpl::FileThreadRun(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007fd5c6465423 in content::BrowserThreadImpl::Run(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007fd5c6b73960 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#16 0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#17 0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#18 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fd58dffb700 (LWP 20590)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b67cbe in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b67d74 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b42b03 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007fd5c6464b88 in content::BrowserThreadImpl::DBThreadRun(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6465413 in content::BrowserThreadImpl::Run(base::RunLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c6b73960 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#11 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fd58f7fe700 (LWP 20587)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c6b67cbe in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007fd5c6b67d74 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007fd5c6b42b03 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007fd5c6b73896 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#9  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fd58ffff700 (LWP 20586)):
#0  0x00007fd5ccd04ddc in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007fd5ccd06a14 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007fd5bbbf686e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007fd5bbbf6a64 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007fd5bbbfb1e8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007fd5bbbe518a in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007fd5c6b43152 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007fd5c6b3eb95 in base::MessageLoop::RunHandler() () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007fd5c6b5b7ea in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007fd5c6b73896 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007fd5c6b6f9e2 in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#12 0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fd59ecd6700 (LWP 20579)):
#0  0x00007fd5ccceaecd in poll () from /lib64/libc.so.6
#1  0x00007fd5bea43166 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007fd5bea4327c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007fd5cdaf16eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007fd5cdaa268a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fd5cd8ff5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fd5d2927fb9 in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#7  0x00007fd5cd9039ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#9  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fd5aa4b8700 (LWP 20578)):
#0  0x00007fd5cccf7db0 in recvmsg () from /lib64/libc.so.6
#1  0x00007fd5c1f4bfd7 in _xcb_in_read () from /lib64/libxcb.so.1
#2  0x00007fd5c1f4a00c in _xcb_conn_wait () from /lib64/libxcb.so.1
#3  0x00007fd5c1f4baa9 in xcb_wait_for_event () from /lib64/libxcb.so.1
#4  0x00007fd5ad84ed69 in QXcbEventReader::run() () from /lib64/libQt5XcbQpa.so.5
#5  0x00007fd5cd9039ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#6  0x00007fd5c34de73a in start_thread () from /lib64/libpthread.so.0
#7  0x00007fd5cccf6e0f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fd5b44e1940 (LWP 20576)):
#0  0x00007fd5c34e4460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fd5c1f49f87 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007fd5c1f4b7cf in wait_for_reply () from /lib64/libxcb.so.1
#3  0x00007fd5c1f4b8e2 in xcb_wait_for_reply () from /lib64/libxcb.so.1
#4  0x00007fd5ad84de5a in QXcbConnection::sync() () from /lib64/libQt5XcbQpa.so.5
#5  0x00007fd5ad869af9 in QXcbWindow::show() () from /lib64/libQt5XcbQpa.so.5
#6  0x00007fd5cdde36fb in QWindow::setVisible(bool) () from /lib64/libQt5Gui.so.5
#7  0x00007fd5ce31feec in QWidgetPrivate::show_sys() () from /lib64/libQt5Widgets.so.5
#8  0x00007fd5ce328380 in QWidgetPrivate::show_helper() () from /lib64/libQt5Widgets.so.5
#9  0x00007fd5ce32b1b5 in QWidget::setVisible(bool) () from /lib64/libQt5Widgets.so.5
#10 0x000000070954d385 in KontactApp::activate(QStringList const&, QString const&) ()
#11 0x00007fd5d2189cee in KontactInterface::PimUniqueApplication::newInstance(QByteArray const&, QStringList const&, QString const&) () from /lib64/libKF5KontactInterface.so.5
#12 0x00007fd5d218ad42 in KontactInterface::PimUniqueApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /lib64/libKF5KontactInterface.so.5
#13 0x00007fd5d218b0f3 in KontactInterface::PimUniqueApplication::qt_metacall(QMetaObject::Call, int, void**) () from /lib64/libKF5KontactInterface.so.5
#14 0x00007fd5d2931b70 in QDBusConnectionPrivate::deliverCall(QObject*, int, QDBusMessage const&, QVector<int> const&, int) () from /lib64/libQt5DBus.so.5
#15 0x00007fd5d2935fed in QDBusConnectionPrivate::activateCall(QObject*, int, QDBusMessage const&) () from /lib64/libQt5DBus.so.5
#16 0x00007fd5d29365cc in QDBusConnectionPrivate::activateObject(QDBusConnectionPrivate::ObjectTreeNode&, QDBusMessage const&, int) () from /lib64/libQt5DBus.so.5
#17 0x00007fd5d293910e in QDBusActivateObjectEvent::placeMetaCall(QObject*) () from /lib64/libQt5DBus.so.5
#18 0x00007fd5cdacb7e9 in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#19 0x00007fd5ce2e9c3f in QApplication::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#20 0x00007fd5ce2e3ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#21 0x00007fd5ce2eb671 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#22 0x00007fd5cdaa36fa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#23 0x00007fd5cdaa5de0 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#24 0x00007fd5cdaf1653 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#25 0x00007fd5bea42e52 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#26 0x00007fd5bea431d0 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#27 0x00007fd5bea4327c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#28 0x00007fd5cdaf16cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#29 0x00007fd5cdaa268a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#30 0x00007fd5cdaaa18c in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#31 0x000000070954c4f7 in main ()

Possible duplicates by query: bug 382560, bug 379623, bug 377395, bug 375577, bug 371511.

Reported using DrKonqi