[kmail2] [Bug 376747] New: Kmail crashes on viewing attachement

Roger Pixley bugzilla_noreply at kde.org
Tue Feb 21 03:20:56 GMT 2017


https://bugs.kde.org/show_bug.cgi?id=376747

            Bug ID: 376747
           Summary: Kmail crashes on viewing attachement
           Product: kmail2
           Version: unspecified
          Platform: Fedora RPMs
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: skreech2 at hotmail.com
  Target Milestone: ---

Application: kmail (5.3.3 (QtWebEngine))

Qt Version: 5.7.1
Frameworks Version: 5.29.0
Operating System: Linux 4.9.10-200.fc25.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
- What I was doing when the application crashed:

Opened a mail that had an attachment. Clicking on the attachment or interacting
with the mail closes Kmail.

- Unusual behavior I noticed:

I got a noveau kernel oops at the same time. I'm not sure if they were related
but this was the first time that I had received an error report from the kernel
at the same time.

The crash can be reproduced every time.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7231420940 (LWP 1842))]

Thread 35 (Thread 0x7f70ee43b700 (LWP 2144)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc47c49 in
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
() from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc48289 in base::SequencedWorkerPool::Worker::Run() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc48440 in base::SimpleThread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 34 (Thread 0x7f70ef67a700 (LWP 1943)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc47c49 in
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
() from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc48289 in base::SequencedWorkerPool::Worker::Run() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc48440 in base::SimpleThread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 33 (Thread 0x7f718080c700 (LWP 1941)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f723a5442f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from
/lib64/libQt5Script.so.5
#2  0x00007f723a544339 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*)
() from /lib64/libQt5Script.so.5
#3  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#4  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 32 (Thread 0x7f7181a7a700 (LWP 1929)):
#0  0x00007f725618a01d in poll () from /lib64/libc.so.6
#1  0x00007f72427fc166 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 31 (Thread 0x7f71832a9700 (LWP 1926)):
#0  0x00007f725618a01d in poll () from /lib64/libc.so.6
#1  0x00007f72427fc166 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 30 (Thread 0x7f718ca41700 (LWP 1898)):
#0  0x00007f725618a01d in poll () from /lib64/libc.so.6
#1  0x00007f72427fc166 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 29 (Thread 0x7f718d454700 (LWP 1888)):
#0  0x00007f7256185bed in read () from /lib64/libc.so.6
#1  0x00007f72428404d0 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f72427fbc83 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f72427fc104 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 28 (Thread 0x7f71b97fa700 (LWP 1882)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc47c49 in
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
() from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc48289 in base::SequencedWorkerPool::Worker::Run() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc48440 in base::SimpleThread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 27 (Thread 0x7f71b9ffb700 (LWP 1881)):
#0  0x00007f7232ca1f56 in pa_pstream_ref () from
/usr/lib64/pulseaudio/libpulsecommon-10.0.so
#1  0x00007f7232ca2ac1 in srb_callback () from
/usr/lib64/pulseaudio/libpulsecommon-10.0.so
#2  0x00007f7232ca334a in srbchannel_rwloop () from
/usr/lib64/pulseaudio/libpulsecommon-10.0.so
#3  0x00007f723513474c in pa_mainloop_dispatch () from /lib64/libpulse.so.0
#4  0x00007f7235134b4c in pa_mainloop_iterate () from /lib64/libpulse.so.0
#5  0x00007f7235134bf0 in pa_mainloop_run () from /lib64/libpulse.so.0
#6  0x00007f7235142bd9 in thread () from /lib64/libpulse.so.0
#7  0x00007f7232cb31d8 in internal_thread_func () from
/usr/lib64/pulseaudio/libpulsecommon-10.0.so
#8  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 26 (Thread 0x7f71ba7fc700 (LWP 1880)):
#0  0x00007f72561a3f5c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f72561a5b64 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007f723e54e86e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007f723e54ea64 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007f723e5531e8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007f723e53d18a in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007f724dbf597e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f724dc489fa in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#12 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 25 (Thread 0x7f71baffd700 (LWP 1879)):
[KCrash Handler]
#6  0x00007f72257ef22f in pushbuf_kref () from /lib64/libdrm_nouveau.so.2
#7  0x00007f72257ef8b9 in pushbuf_validate () from /lib64/libdrm_nouveau.so.2
#8  0x00007f7226411563 in nv50_blit () from /usr/lib64/dri/nouveau_dri.so
#9  0x00007f722603a377 in st_TexSubImage () from /usr/lib64/dri/nouveau_dri.so
#10 0x00007f7225fbf81b in _mesa_texture_sub_image () from
/usr/lib64/dri/nouveau_dri.so
#11 0x00007f7225fbfa86 in texsubimage () from /usr/lib64/dri/nouveau_dri.so
#12 0x00007f7225fbfea8 in _mesa_TexSubImage2D () from
/usr/lib64/dri/nouveau_dri.so
#13 0x00007f724e246123 in
gpu::gles2::TextureManager::ValidateAndDoTexSubImage(gpu::gles2::GLES2Decoder*,
gpu::gles2::DecoderTextureState*, gpu::gles2::ContextState*,
gpu::gles2::DecoderFramebufferState*, char const*,
gpu::gles2::TextureManager::DoTexSubImageArguments const&) () from
/lib64/libQt5WebEngineCore.so.5
#14 0x00007f724e1d6f35 in
gpu::gles2::GLES2DecoderImpl::HandleTexSubImage2D(unsigned int, void const*) ()
from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f724e2017c2 in gpu::error::Error
gpu::gles2::GLES2DecoderImpl::DoCommandsImpl<false>(unsigned int, void const*,
int, int*) () from /lib64/libQt5WebEngineCore.so.5
#16 0x00007f724e25037a in gpu::CommandParser::ProcessCommands(int) () from
/lib64/libQt5WebEngineCore.so.5
#17 0x00007f724e21556a in gpu::GpuScheduler::PutChanged() () from
/lib64/libQt5WebEngineCore.so.5
#18 0x00007f724d5d1490 in content::GpuCommandBufferStub::OnAsyncFlush(int,
unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> >
const&) () from /lib64/libQt5WebEngineCore.so.5
#19 0x00007f724d5d4ad1 in
content::GpuCommandBufferStub::OnMessageReceived(IPC::Message const&) () from
/lib64/libQt5WebEngineCore.so.5
#20 0x00007f724d5d020e in content::GpuChannel::HandleMessage() [clone
.part.322] () from /lib64/libQt5WebEngineCore.so.5
#21 0x00007f724dc6ffa9 in base::debug::TaskAnnotator::RunTask(char const*,
base::PendingTask const&) () from /lib64/libQt5WebEngineCore.so.5
#22 0x00007f724dc1bed9 in base::MessageLoop::RunTask(base::PendingTask const&)
() from /lib64/libQt5WebEngineCore.so.5
#23 0x00007f724dc1ca99 in
base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) () from
/lib64/libQt5WebEngineCore.so.5
#24 0x00007f724dc1cf52 in base::MessageLoop::DoWork() () from
/lib64/libQt5WebEngineCore.so.5
#25 0x00007f724dc1edc9 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#26 0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#27 0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#28 0x00007f724dc489fa in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#29 0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#30 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#31 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7f71bb7fe700 (LWP 1878)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724d7e91c0 in mojo::system::Waiter::Wait(unsigned long, unsigned
long*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724d7d1ff0 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  0x00007f724d7d237b in mojo::system::Core::Wait(unsigned int, unsigned int,
unsigned long, mojo::system::UserPointer<MojoHandleSignalsState>) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724d7ce00a in MojoWait () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f724e94782e in
mojo::common::MessagePumpMojo::WaitForReadyHandles(mojo::common::MessagePumpMojo::RunState
const&) const () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f724e949be4 in
mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState
const&, bool) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f724e949c35 in
mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*,
base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f724e949d09 in
mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#11 0x00007f724dc489fa in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#12 0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#14 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7f71bbfff700 (LWP 1877)):
#0  0x00007f7246a4b809 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc3c912 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc3d1b5 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc1ee51 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f724dc489fa in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7f71dcff9700 (LWP 1876)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724d302a0d in cc::SingleThreadTaskGraphRunner::Run() () from
/lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc4831e in base::DelegateSimpleThread::Run() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc48440 in base::SimpleThread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7f71dd7fa700 (LWP 1875)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc3d125 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc3d1e5 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc1ee13 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f724dc489fa in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7f71ddffb700 (LWP 1874)):
#0  0x00007f7256185c4d in write () from /lib64/libc.so.6
#1  0x00007f7256108a57 in _IO_new_file_write () from /lib64/libc.so.6
#2  0x00007f7256109368 in __GI__IO_file_xsputn () from /lib64/libc.so.6
#3  0x00007f72560dea45 in buffered_vfprintf () from /lib64/libc.so.6
#4  0x00007f72560dbbf5 in vfprintf () from /lib64/libc.so.6
#5  0x00007f72561a5bb9 in __fprintf_chk () from /lib64/libc.so.6
#6  0x00007f723e54e86e in _warn_helper () from /lib64/libevent-2.0.so.5
#7  0x00007f723e54ea64 in event_warn () from /lib64/libevent-2.0.so.5
#8  0x00007f723e5531e8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#9  0x00007f723e53d18a in event_base_loop () from /lib64/libevent-2.0.so.5
#10 0x00007f724dbf597e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#11 0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#12 0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#13 0x00007f724cf29fa8 in
content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () from
/lib64/libQt5WebEngineCore.so.5
#14 0x00007f724cf2a0eb in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f724dc48a78 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#16 0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#17 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#18 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7f71de7fc700 (LWP 1873)):
#0  0x00007f72561a3f5c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f72561a5b64 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007f723e54e86e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007f723e54ea64 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007f723e5531e8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007f723e53d18a in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007f724dbf597e in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f724cf29ef8 in
content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f724cf2a14b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f724dc48a78 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#12 0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#14 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7f71deffd700 (LWP 1872)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc3d125 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc3d1e5 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc1ee13 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f724cf29e48 in
content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) ()
from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f724cf2a13b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f724dc48a78 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f71df7fe700 (LWP 1871)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc3d125 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc3d1e5 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc1ee13 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f724cf29d98 in
content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) ()
from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f724cf2a12b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f724dc48a78 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f71dffff700 (LWP 1870)):
#0  0x00007f72561a3f5c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f72561a5b64 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007f723e54e86e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007f723e54ea64 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007f723e5531e8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007f723e53d18a in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007f724dbf5a12 in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f724cf29ce8 in
content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f724cf2a11b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f724dc48a78 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#12 0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#14 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f71f88bd700 (LWP 1869)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc3d125 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc3d1e5 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc1ee13 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f724cf29c38 in
content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f724cf2a10b in content::BrowserThreadImpl::Run(base::MessageLoop*)
() from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f724dc48a78 in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f71f90be700 (LWP 1868)):
#0  0x00007f7246a4b809 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc3c912 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc4b4f0 in base::PosixDynamicThreadPool::WaitForTask() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc4ba23 in base::(anonymous
namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f71f98bf700 (LWP 1867)):
#0  0x00007f7246a4b809 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc3c912 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc4b4f0 in base::PosixDynamicThreadPool::WaitForTask() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc4ba23 in base::(anonymous
namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f71fa0c0700 (LWP 1866)):
#0  0x00007f7246a4b460 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f724dc3d125 in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f724dc3d1e5 in base::WaitableEvent::Wait() () from
/lib64/libQt5WebEngineCore.so.5
#3  0x00007f724dc1ee13 in
base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#4  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#5  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#6  0x00007f724dc489fa in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f71fa8c1700 (LWP 1865)):
#0  0x00007f72561a3f5c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f72561a5b64 in __fprintf_chk () from /lib64/libc.so.6
#2  0x00007f723e54e86e in _warn_helper () from /lib64/libevent-2.0.so.5
#3  0x00007f723e54ea64 in event_warn () from /lib64/libevent-2.0.so.5
#4  0x00007f723e5531e8 in epoll_dispatch () from /lib64/libevent-2.0.so.5
#5  0x00007f723e53d18a in event_base_loop () from /lib64/libevent-2.0.so.5
#6  0x00007f724dbf5a12 in
base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from
/lib64/libQt5WebEngineCore.so.5
#7  0x00007f724dc3084a in base::RunLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#8  0x00007f724dc1b2e5 in base::MessageLoop::Run() () from
/lib64/libQt5WebEngineCore.so.5
#9  0x00007f724dc489fa in base::Thread::ThreadMain() () from
/lib64/libQt5WebEngineCore.so.5
#10 0x00007f724dc44fdc in base::(anonymous namespace)::ThreadFunc(void*) ()
from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#12 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f7214a37700 (LWP 1857)):
#0  0x00007ffef47e1949 in ?? ()
#1  0x00007ffef47e1bd9 in clock_gettime ()
#2  0x00007f72561a4726 in clock_gettime () from /lib64/libc.so.6
#3  0x00007f7256e39b31 in qt_gettime() () from /lib64/libQt5Core.so.5
#4  0x00007f7256f8ed99 in QTimerInfoList::updateCurrentTime() () from
/lib64/libQt5Core.so.5
#5  0x00007f7256f8f195 in QTimerInfoList::timerWait(timespec&) () from
/lib64/libQt5Core.so.5
#6  0x00007f7256f9038c in timerSourcePrepareHelper(GTimerSource*, int*) () from
/lib64/libQt5Core.so.5
#7  0x00007f7256f90455 in timerSourcePrepare(_GSource*, int*) () from
/lib64/libQt5Core.so.5
#8  0x00007f72427fb69d in g_main_context_prepare () from
/lib64/libglib-2.0.so.0
#9  0x00007f72427fc08b in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#10 0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#11 0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#12 0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#13 0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#14 0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#15 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#16 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f7215238700 (LWP 1855)):
#0  0x00007f7256185bed in read () from /lib64/libc.so.6
#1  0x00007f72428404d0 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f72427fbc83 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f72427fc104 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#9  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f72167fc700 (LWP 1852)):
#0  0x00007f7242841894 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007f72427fbd2b in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#2  0x00007f72427fc1d0 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#3  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#4  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#5  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#6  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#8  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f7216ffd700 (LWP 1850)):
#0  0x00007f72427f91aa in g_source_iter_next () from /lib64/libglib-2.0.so.0
#1  0x00007f72427fb63b in g_main_context_prepare () from
/lib64/libglib-2.0.so.0
#2  0x00007f72427fc08b in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#3  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#4  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#5  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#6  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#8  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f72177fe700 (LWP 1848)):
#0  0x00007f7242841879 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f72427fb1c4 in g_main_context_release () from
/lib64/libglib-2.0.so.0
#2  0x00007f72427fc11a in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#3  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#4  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#5  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#6  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#8  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f7217fff700 (LWP 1846)):
#0  0x00007f724284145c in g_private_get () from /lib64/libglib-2.0.so.0
#1  0x00007f7242824090 in g_thread_self () from /lib64/libglib-2.0.so.0
#2  0x00007f72427fc26d in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f721ce0c700 (LWP 1845)):
#0  0x00007f725618a01d in poll () from /lib64/libc.so.6
#1  0x00007f72427fc166 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#2  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#3  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#4  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#5  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#7  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f722484c700 (LWP 1844)):
#0  0x00007f7256185bed in read () from /lib64/libc.so.6
#1  0x00007f72428404d0 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f72427fbc83 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f72427fc104 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#4  0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#5  0x00007f7256f906eb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#6  0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#7  0x00007f7256d9e5e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f7257f37739 in QDBusConnectionManager::run() () from
/lib64/libQt5DBus.so.5
#9  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#10 0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f72279e2700 (LWP 1843)):
#0  0x00007f725618a01d in poll () from /lib64/libc.so.6
#1  0x00007f7241ef0d10 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007f7241ef2aa9 in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007f722a790d69 in QXcbEventReader::run() () from
/lib64/libQt5XcbQpa.so.5
#4  0x00007f7256da29ca in QThreadPrivate::start(void*) () from
/lib64/libQt5Core.so.5
#5  0x00007f7246a456ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f7256195f7f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f7231420940 (LWP 1842)):
#0  0x00007f7246a4e38d in __lll_lock_wait () from /lib64/libpthread.so.0
#1  0x00007f7246a47eca in pthread_mutex_lock () from /lib64/libpthread.so.0
#2  0x00007f7225fc62d3 in _mesa_lock_context_textures () from
/usr/lib64/dri/nouveau_dri.so
#3  0x00007f7225fa95f9 in _mesa_update_state () from
/usr/lib64/dri/nouveau_dri.so
#4  0x00007f7225edb8d0 in _mesa_Clear () from /usr/lib64/dri/nouveau_dri.so
#5  0x00007f72577ea181 in QOpenGLWidgetPrivate::invalidateFbo() () from
/lib64/libQt5Widgets.so.5
#6  0x00007f72577ea8b0 in QOpenGLWidgetPrivate::render() () from
/lib64/libQt5Widgets.so.5
#7  0x00007f72577ca7c0 in QWidget::event(QEvent*) () from
/lib64/libQt5Widgets.so.5
#8  0x00007f7250abf0ab in
QtWebEngineCore::RenderWidgetHostViewQtDelegateWidget::event(QEvent*) () from
/lib64/libQt5WebEngineWidgets.so.5
#9  0x00007f7257782ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib64/libQt5Widgets.so.5
#10 0x00007f725778a671 in QApplication::notify(QObject*, QEvent*) () from
/lib64/libQt5Widgets.so.5
#11 0x00007f7256f426fa in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib64/libQt5Core.so.5
#12 0x00007f72577c347a in QWidgetPrivate::sendPaintEvent(QRegion const&) ()
from /lib64/libQt5Widgets.so.5
#13 0x00007f72577929ae in QWidgetBackingStore::doSync() () from
/lib64/libQt5Widgets.so.5
#14 0x00007f725779347f in QWidgetBackingStore::sync() () from
/lib64/libQt5Widgets.so.5
#15 0x00007f72577b23af in QWidgetPrivate::syncBackingStore() () from
/lib64/libQt5Widgets.so.5
#16 0x00007f72577ca898 in QWidget::event(QEvent*) () from
/lib64/libQt5Widgets.so.5
#17 0x00007f72578ca2ab in QMainWindow::event(QEvent*) () from
/lib64/libQt5Widgets.so.5
#18 0x00007f725a324737 in KMainWindow::event(QEvent*) () from
/lib64/libKF5XmlGui.so.5
#19 0x00007f725a3691c5 in KXmlGuiWindow::event(QEvent*) () from
/lib64/libKF5XmlGui.so.5
#20 0x00007f7257782ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib64/libQt5Widgets.so.5
#21 0x00007f725778a671 in QApplication::notify(QObject*, QEvent*) () from
/lib64/libQt5Widgets.so.5
#22 0x00007f7256f426fa in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib64/libQt5Core.so.5
#23 0x00007f7256f44de0 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /lib64/libQt5Core.so.5
#24 0x00007f7256f90653 in postEventSourceDispatch(_GSource*, int (*)(void*),
void*) () from /lib64/libQt5Core.so.5
#25 0x00007f72427fbe52 in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#26 0x00007f72427fc1d0 in g_main_context_iterate.isra () from
/lib64/libglib-2.0.so.0
#27 0x00007f72427fc27c in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#28 0x00007f7256f906cf in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib64/libQt5Core.so.5
#29 0x00007f7256f4168a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib64/libQt5Core.so.5
#30 0x00007f7256f4918c in QCoreApplication::exec() () from
/lib64/libQt5Core.so.5
#31 0x000055b42f231b34 in main ()

Reported using DrKonqi

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