https://bugs.kde.org/show_bug.cgi?id=369010

            Bug ID: 369010
           Summary: Kmail crash on message open or right-click
           Product: kmail2
           Version: unspecified
          Platform: Fedora RPMs
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs@kde.org
          Reporter: t...@sonic.net

Application: kmail (5.3.0 (QtWebEngine))

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.7.3-200.fc24.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
Upgraded from FC23 to 24 (no custom packages, very vanilla). All
messages/configuration appears to be there, but just about any action on an
inbox message (click, right click) crashed kmail.

The crash can be reproduced every time.

-- Backtrace:
Application: KMail (kmail), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9cbc079940 (LWP 3731))]

Thread 42 (Thread 0x7f9b1f801700 (LWP 3813)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1570e79 in
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
() from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1571540 in base::SequencedWorkerPool::Worker::Run() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1571710 in base::SimpleThread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 41 (Thread 0x7f9be4ff9700 (LWP 3802)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cad272203 in JSC::GCThread::waitForNextPhase() () from
/lib64/libQt5WebKit.so.5
#2  0x00007f9cad272290 in JSC::GCThread::gcThreadMain() () from
/lib64/libQt5WebKit.so.5
#3  0x00007f9cad578531 in WTF::wtfThreadEntryPoint(void*) () from
/lib64/libQt5WebKit.so.5
#4  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#5  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 40 (Thread 0x7f9be57fa700 (LWP 3801)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cad272203 in JSC::GCThread::waitForNextPhase() () from
/lib64/libQt5WebKit.so.5
#2  0x00007f9cad272290 in JSC::GCThread::gcThreadMain() () from
/lib64/libQt5WebKit.so.5
#3  0x00007f9cad578531 in WTF::wtfThreadEntryPoint(void*) () from
/lib64/libQt5WebKit.so.5
#4  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#5  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 39 (Thread 0x7f9be5ffb700 (LWP 3800)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cad272203 in JSC::GCThread::waitForNextPhase() () from
/lib64/libQt5WebKit.so.5
#2  0x00007f9cad272290 in JSC::GCThread::gcThreadMain() () from
/lib64/libQt5WebKit.so.5
#3  0x00007f9cad578531 in WTF::wtfThreadEntryPoint(void*) () from
/lib64/libQt5WebKit.so.5
#4  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#5  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 38 (Thread 0x7f9be67fc700 (LWP 3799)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cad272203 in JSC::GCThread::waitForNextPhase() () from
/lib64/libQt5WebKit.so.5
#2  0x00007f9cad272290 in JSC::GCThread::gcThreadMain() () from
/lib64/libQt5WebKit.so.5
#3  0x00007f9cad578531 in WTF::wtfThreadEntryPoint(void*) () from
/lib64/libQt5WebKit.so.5
#4  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#5  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 37 (Thread 0x7f9be6ffd700 (LWP 3798)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cad272203 in JSC::GCThread::waitForNextPhase() () from
/lib64/libQt5WebKit.so.5
#2  0x00007f9cad272290 in JSC::GCThread::gcThreadMain() () from
/lib64/libQt5WebKit.so.5
#3  0x00007f9cad578531 in WTF::wtfThreadEntryPoint(void*) () from
/lib64/libQt5WebKit.so.5
#4  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#5  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 36 (Thread 0x7f9be77fe700 (LWP 3797)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cad272203 in JSC::GCThread::waitForNextPhase() () from
/lib64/libQt5WebKit.so.5
#2  0x00007f9cad272290 in JSC::GCThread::gcThreadMain() () from
/lib64/libQt5WebKit.so.5
#3  0x00007f9cad578531 in WTF::wtfThreadEntryPoint(void*) () from
/lib64/libQt5WebKit.so.5
#4  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#5  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 35 (Thread 0x7f9be7fff700 (LWP 3796)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cad2713bc in JSC::BlockAllocator::blockFreeingThreadMain() () from
/lib64/libQt5WebKit.so.5
#2  0x00007f9cad578531 in WTF::wtfThreadEntryPoint(void*) () from
/lib64/libQt5WebKit.so.5
#3  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#4  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 34 (Thread 0x7f9bfc946700 (LWP 3795)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cad550c96 in WTF::TCMalloc_PageHeap::scavengerThread() () from
/lib64/libQt5WebKit.so.5
#2  0x00007f9cad550cb9 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) ()
from /lib64/libQt5WebKit.so.5
#3  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#4  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 33 (Thread 0x7f9bfd976700 (LWP 3794)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9c9dfe0bc4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from
/lib64/libQt5Script.so.5
#2  0x00007f9c9dfe0c09 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*)
() from /lib64/libQt5Script.so.5
#3  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#4  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 32 (Thread 0x7f9bfebf6700 (LWP 3792)):
#0  0x00007f9cba1ad5c9 in QMutex::lock() () from /lib64/libQt5Core.so.5
#1  0x00007f9cba3a1fcf in postEventSourcePrepare(_GSource*, int*) () from
/lib64/libQt5Core.so.5
#2  0x00007f9ca9207f59 in g_main_context_prepare () from
/lib64/libglib-2.0.so.0
#3  0x00007f9ca920892b in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 31 (Thread 0x7f9bffcfe700 (LWP 3789)):
#0  0x00007ffc689d1977 in ?? ()
#1  0x00007ffc689d1c51 in clock_gettime ()
#2  0x00007f9cb95a84e6 in clock_gettime () from /lib64/libc.so.6
#3  0x00007f9cba250ab3 in qt_gettime() () from /lib64/libQt5Core.so.5
#4  0x00007f9cba3a0869 in QTimerInfoList::updateCurrentTime() () from
/lib64/libQt5Core.so.5
#5  0x00007f9cba3a0c65 in QTimerInfoList::timerWait(timespec&) () from
/lib64/libQt5Core.so.5
#6  0x00007f9cba3a1dac in timerSourcePrepareHelper(GTimerSource*, int*) () from
/lib64/libQt5Core.so.5
#7  0x00007f9cba3a1e75 in timerSourcePrepare(_GSource*, int*) () from
/lib64/libQt5Core.so.5
#8  0x00007f9ca9207f59 in g_main_context_prepare () from
/lib64/libglib-2.0.so.0
#9  0x00007f9ca920892b in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#10 0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#11 0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#12 0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#13 0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#14 0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#15 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#16 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 30 (Thread 0x7f9c0a156700 (LWP 3781)):
#0  0x00007f9cb958e3ed in poll () from /lib64/libc.so.6
#1  0x00007f9ca9208a06 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 29 (Thread 0x7f9c0ab6e700 (LWP 3774)):
#0  0x00007f9ca9205a60 in g_source_iter_next () from /lib64/libglib-2.0.so.0
#1  0x00007f9ca9207efb in g_main_context_prepare () from
/lib64/libglib-2.0.so.0
#2  0x00007f9ca920892b in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#3  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#4  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#5  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#6  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#8  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 28 (Thread 0x7f9c2e7fc700 (LWP 3767)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1480b90 in mojo::system::Waiter::Wait(unsigned long, unsigned
int*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb146c48c in mojo::system::Core::WaitManyInternal(unsigned int
const*, unsigned int const*, unsigned int, unsigned long, unsigned int*,
mojo::system::HandleSignalsState*) () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb146c98c 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
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb1468de5 in MojoWaitMany () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9cb2ae2e47 in
mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState
const&, bool) () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f9cb2ae307e in
mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*,
base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb2ae31b9 in
mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9cb1571c06 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#13 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 27 (Thread 0x7f9c2effd700 (LWP 3766)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1570e79 in
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
() from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1571540 in base::SequencedWorkerPool::Worker::Run() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1571710 in base::SimpleThread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 26 (Thread 0x7f9c2f7fe700 (LWP 3765)):
#0  0x00007f9cb959a573 in epoll_wait () from /lib64/libc.so.6
#1  0x00007f9ca1f4bfbb in epoll_dispatch () from /lib64/libevent-2.0.so.5
#2  0x00007f9ca1f360e0 in event_base_loop () from /lib64/libevent-2.0.so.5
#3  0x00007f9cb15212da in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9cb1571c06 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 25 (Thread 0x7f9c34ff9700 (LWP 3764)):
[KCrash Handler]
#6  0x00007f9cb94cb6f5 in raise () from /lib64/libc.so.6
#7  0x00007f9cb94cd2fa in abort () from /lib64/libc.so.6
#8  0x00007f9cb950c670 in __libc_message () from /lib64/libc.so.6
#9  0x00007f9cb9514e0a in _int_free () from /lib64/libc.so.6
#10 0x00007f9cb951836c in free () from /lib64/libc.so.6
#11 0x00007f9c8a32172f in nouveau_fence_trigger_work () from
/usr/lib64/dri/nouveau_dri.so
#12 0x00007f9c8a32196e in nouveau_fence_update () from
/usr/lib64/dri/nouveau_dri.so
#13 0x00007f9c8a321c93 in nouveau_fence_wait () from
/usr/lib64/dri/nouveau_dri.so
#14 0x00007f9c8a020acb in st_finish () from /usr/lib64/dri/nouveau_dri.so
#15 0x00007f9c8a020b10 in st_glFinish () from /usr/lib64/dri/nouveau_dri.so
#16 0x00007f9cb1cdda61 in gpu::gles2::GLES2DecoderImpl::DoFinish() () from
/lib64/libQt5WebEngineCore.so.5
#17 0x00007f9cb1cdda96 in gpu::gles2::GLES2DecoderImpl::HandleFinish(unsigned
int, void const*) () from /lib64/libQt5WebEngineCore.so.5
#18 0x00007f9cb1ce5a3a in gpu::error::Error
gpu::gles2::GLES2DecoderImpl::DoCommandsImpl<false>(unsigned int, void const*,
int, int*) () from /lib64/libQt5WebEngineCore.so.5
#19 0x00007f9cb1d2e4ba in gpu::CommandParser::ProcessCommands(int) () from
/lib64/libQt5WebEngineCore.so.5
#20 0x00007f9cb1cfd732 in gpu::GpuScheduler::PutChanged() () from
/lib64/libQt5WebEngineCore.so.5
#21 0x00007f9cb1272d39 in content::GpuCommandBufferStub::OnAsyncFlush(int,
unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> >
const&) () from /lib64/libQt5WebEngineCore.so.5
#22 0x00007f9cb1277c54 in
content::GpuCommandBufferStub::OnMessageReceived(IPC::Message const&) () from
/lib64/libQt5WebEngineCore.so.5
#23 0x00007f9cb12563af in content::MessageRouter::RouteMessage(IPC::Message
const&) () from /lib64/libQt5WebEngineCore.so.5
#24 0x00007f9cb1271843 in content::GpuChannel::HandleMessage() () from
/lib64/libQt5WebEngineCore.so.5
#25 0x00007f9cb1597a28 in base::debug::TaskAnnotator::RunTask(char const*, char
const*, base::PendingTask const&) () from /lib64/libQt5WebEngineCore.so.5
#26 0x00007f9cb1544a44 in base::MessageLoop::RunTask(base::PendingTask const&)
() from /lib64/libQt5WebEngineCore.so.5
#27 0x00007f9cb1545269 in
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) () from
/lib64/libQt5WebEngineCore.so.5
#28 0x00007f9cb1545732 in base::MessageLoop::DoWork() () from
/lib64/libQt5WebEngineCore.so.5
#29 0x00007f9cb1547c29 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#30 0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#31 0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#32 0x00007f9cb1571c06 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#33 0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#34 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#35 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7f9c357fa700 (LWP 3763)):
#0  0x00007f9cb958a04d in read () from /lib64/libc.so.6
#1  0x00007f9c9632bb31 in pa_read () from
/usr/lib64/pulseaudio/libpulsecommon-8.0.so
#2  0x00007f9c983aad7e in pa_mainloop_prepare () from /lib64/libpulse.so.0
#3  0x00007f9c983ab7f0 in pa_mainloop_iterate () from /lib64/libpulse.so.0
#4  0x00007f9c983ab8b0 in pa_mainloop_run () from /lib64/libpulse.so.0
#5  0x00007f9c983b98c9 in thread () from /lib64/libpulse.so.0
#6  0x00007f9c9635918b in internal_thread_func () from
/usr/lib64/pulseaudio/libpulsecommon-8.0.so
#7  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7f9c35ffb700 (LWP 3762)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1566925 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1566a04 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1547c73 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9cb1571c06 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7f9c367fc700 (LWP 3761)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb0e0c989 in cc::TaskGraphRunner::Run() () from
/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1571710 in base::SimpleThread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#5  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7f9c36ffd700 (LWP 3760)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1566925 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1566a04 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1547c73 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9cb1571c06 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7f9c377fe700 (LWP 3759)):
#0  0x00007f9cb95a7d0c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f9cb95a97c4 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007f9ca1f4789e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007f9ca1f47a94 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007f9ca1f4c0d8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007f9ca1f360e0 in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007f9cb152122e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9cb0a694b8 in
content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9cb0a6961b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9cb1571c88 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#14 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7f9c2ffff700 (LWP 3758)):
#0  0x00007f9cb95a7d0c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f9cb95a97c4 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007f9ca1f4789e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007f9ca1f47a94 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007f9ca1f4c0d8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007f9ca1f360e0 in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007f9cb152122e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9cb0a69408 in
content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9cb0a6967b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9cb1571c88 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#14 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7f9c37fff700 (LWP 3757)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1566925 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1566a04 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1547c73 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9cb0a69358 in
content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) ()
from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb0a6966b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9cb1571c88 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f9c54ff9700 (LWP 3756)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1566925 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1566a04 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1547c73 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9cb0a692a8 in
content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) ()
from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb0a6965b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9cb1571c88 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f9c557fa700 (LWP 3755)):
#0  0x00007f9cb95a7d0c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f9cb95a97c4 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007f9ca1f4789e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007f9ca1f47a94 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007f9ca1f4c0d8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007f9ca1f360e0 in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007f9cb152122e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9cb0a691f8 in
content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9cb0a6964b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9cb1571c88 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#14 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f9c55ffb700 (LWP 3754)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1566925 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1566a04 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1547c73 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9cb0a69148 in
content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb0a6963b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9cb1571c88 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f9c567fc700 (LWP 3753)):
#0  0x00007f9caa69bf79 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1566102 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1574aa1 in base::PosixDynamicThreadPool::WaitForTask() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1574fcd in base::(anonymous
namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f9c56ffd700 (LWP 3752)):
#0  0x00007f9caa69bf79 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1566102 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1574aa1 in base::PosixDynamicThreadPool::WaitForTask() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1574fcd in base::(anonymous
namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f9c577fe700 (LWP 3751)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9cb1566925 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9cb1566a04 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9cb1547c73 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9cb1571c06 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f9c57fff700 (LWP 3750)):
#0  0x00007f9cb951d876 in __strcmp_sse2 () from /lib64/libc.so.6
#1  0x00007f9cb94c6136 in __dcigettext () from /lib64/libc.so.6
#2  0x00007f9cb951f13c in strerror_r () from /lib64/libc.so.6
#3  0x00007f9cb951f06f in strerror () from /lib64/libc.so.6
#4  0x00007f9ca1f47a81 in event_warn () from /lib64/libevent-2.0.so.5
#5  0x00007f9ca1f4c0d8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#6  0x00007f9ca1f360e0 in event_base_loop () from /lib64/libevent-2.0.so.5
#7  0x00007f9cb152122e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9cb15590f4 in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9cb1543f35 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9cb1571c06 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9cb156e0fd in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#13 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f9c797fa700 (LWP 3746)):
#0  0x00007f9cb958a04d in read () from /lib64/libc.so.6
#1  0x00007f9ca924b660 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f9ca92084d6 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f9ca92089a4 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f9c79ffb700 (LWP 3744)):
#0  0x00007f9cb958a04d in read () from /lib64/libc.so.6
#1  0x00007f9ca924b660 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f9ca92084d6 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f9ca92089a4 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f9c7a7fc700 (LWP 3742)):
#0  0x00007f9ca924c5e0 in g_private_get () from /lib64/libglib-2.0.so.0
#1  0x00007f9ca922f1f0 in g_thread_self () from /lib64/libglib-2.0.so.0
#2  0x00007f9ca920792c in g_main_context_acquire () from
/lib64/libglib-2.0.so.0
#3  0x00007f9ca92088b5 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f9c7affd700 (LWP 3740)):
#0  0x00007f9cb958a04d in read () from /lib64/libc.so.6
#1  0x00007f9ca924b660 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f9ca92084d6 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f9ca92089a4 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f9c7b7fe700 (LWP 3738)):
#0  0x00007f9cb958e3ed in poll () from /lib64/libc.so.6
#1  0x00007f9ca9208a06 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f9c7bfff700 (LWP 3736)):
#0  0x00007f9ca9208114 in g_main_context_prepare () from
/lib64/libglib-2.0.so.0
#1  0x00007f9ca920892b in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f9c80f76700 (LWP 3735)):
#0  0x00007f9ca924ca09 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f9ca92081a1 in g_main_context_query () from /lib64/libglib-2.0.so.0
#2  0x00007f9ca9208978 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#3  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#4  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#5  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#6  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#8  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f9c88c8e700 (LWP 3734)):
#0  0x00007f9cb958e3ed in poll () from /lib64/libc.so.6
#1  0x00007f9ca9208a06 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f9cba3a224b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f9cba1b0343 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f9cbb3cc559 in QDBusConnectionManager::run() () from
/lib64/libQt5DBus.so.5
#7  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#8  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f9c8b98e700 (LWP 3733)):
#0  0x00007f9cb958e3ed in poll () from /lib64/libc.so.6
#1  0x00007f9ca5938f80 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007f9ca593ab79 in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007f9c8df49da9 in QXcbEventReader::run() () from
/lib64/libQt5XcbQpa.so.5
#4  0x00007f9cba1b499a in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#5  0x00007f9caa6965ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9cb9599f6d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f9cbc079940 (LWP 3731)):
#0  0x00007f9caa69bbd0 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f9ca59391f7 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007f9ca593a89f in wait_for_reply () from /lib64/libxcb.so.1
#3  0x00007f9ca593a9b3 in xcb_wait_for_reply () from /lib64/libxcb.so.1
#4  0x00007f9cab69136a in _XReply () from /lib64/libX11.so.6
#5  0x00007f9cab68ccf0 in XSync () from /lib64/libX11.so.6
#6  0x00007f9ca8f8f110 in dri2SwapBuffers () from /lib64/libGL.so.1
#7  0x00007f9c8e0286cd in QGLXContext::swapBuffers(QPlatformSurface*) () from
/usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#8  0x00007f9cba6c9d16 in QOpenGLContext::swapBuffers(QSurface*) () from
/lib64/libQt5Gui.so.5
#9  0x00007f9cba8d27d4 in QPlatformBackingStore::composeAndFlush(QWindow*,
QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) ()
from /lib64/libQt5Gui.so.5
#10 0x00007f9c8df695f7 in QXcbBackingStore::composeAndFlush(QWindow*, QRegion
const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () from
/lib64/libQt5XcbQpa.so.5
#11 0x00007f9cbabf6958 in QWidgetBackingStore::qt_flush(QWidget*, QRegion
const&, QBackingStore*, QWidget*, QPoint const&, QPlatformTextureList*,
QWidgetBackingStore*) () from /lib64/libQt5Widgets.so.5
#12 0x00007f9cbabf774e in QWidgetBackingStore::flush(QWidget*) () from
/lib64/libQt5Widgets.so.5
#13 0x00007f9cbabf9f65 in QWidgetBackingStore::doSync() () from
/lib64/libQt5Widgets.so.5
#14 0x00007f9cbabfa151 in QWidgetBackingStore::sync() () from
/lib64/libQt5Widgets.so.5
#15 0x00007f9cbac19bef in QWidgetPrivate::syncBackingStore() () from
/lib64/libQt5Widgets.so.5
#16 0x00007f9cbac31a18 in QWidget::event(QEvent*) () from
/lib64/libQt5Widgets.so.5
#17 0x00007f9cbad4b57b in QMainWindow::event(QEvent*) () from
/lib64/libQt5Widgets.so.5
#18 0x00007f9cbd7f0917 in KMainWindow::event(QEvent*) () from
/lib64/libKF5XmlGui.so.5
#19 0x00007f9cbd835835 in KXmlGuiWindow::event(QEvent*) () from
/lib64/libKF5XmlGui.so.5
#20 0x00007f9cbabebc0c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib64/libQt5Widgets.so.5
#21 0x00007f9cbabf10ef in QApplication::notify(QObject*, QEvent*) () from
/lib64/libQt5Widgets.so.5
#22 0x00007f9cba3527aa in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib64/libQt5Core.so.5
#23 0x00007f9cba35484f in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /lib64/libQt5Core.so.5
#24 0x00007f9cba3a21b3 in postEventSourceDispatch(_GSource*, int (*)(void*),
void*) () from /lib64/libQt5Core.so.5
#25 0x00007f9ca92086ba in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#26 0x00007f9ca9208a70 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#27 0x00007f9ca9208b1c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#28 0x00007f9cba3a222f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#29 0x00007f9cba3515ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#30 0x00007f9cba35917c in QCoreApplication::exec() () from
/lib64/libQt5Core.so.5
#31 0x0000559d3b0f6bbf in main ()

Possible duplicates by query: bug 368016.

Reported using DrKonqi

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