Bug 372866

Summary: KMail crashes on "normal" usage (scrolling/clicking on messages)
Product: [Applications] kmail2 Reporter: kde
Component: generalAssignee: kdepim bugs <pim-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: crash CC: montel
Priority: NOR Keywords: drkonqi
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description kde 2016-11-24 01:13:37 UTC 
Application: kmail (5.3.0 (QtWebEngine))

Qt Version: 5.7.0
Frameworks Version: 5.27.0
Operating System: Linux 4.8.8-300.fc25.x86_64 x86_64
Distribution: "Fedora release 25 (Twenty Five)"

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

I scrolled around my messages and single-clicked onto one of them. Then KMail crashes (sometimes instant, sometimes after a short period).
The behaviour is reproducible on any message. I did not do any configuration changes. This bug appeared after the last KMail update on my system.

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 0x7f9f7054e940 (LWP 21414))]

Thread 43 (Thread 0x7f9dd57f8700 (LWP 21518)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8863be23 in JSC::GCThread::waitForNextPhase() () at /lib64/libQt5WebKit.so.5
#2  0x00007f9f8863beb0 in JSC::GCThread::gcThreadMain() () at /lib64/libQt5WebKit.so.5
#3  0x00007f9f88942151 in WTF::wtfThreadEntryPoint(void*) () at /lib64/libQt5WebKit.so.5
#4  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#5  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 42 (Thread 0x7f9dd5ff9700 (LWP 21517)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8863be23 in JSC::GCThread::waitForNextPhase() () at /lib64/libQt5WebKit.so.5
#2  0x00007f9f8863beb0 in JSC::GCThread::gcThreadMain() () at /lib64/libQt5WebKit.so.5
#3  0x00007f9f88942151 in WTF::wtfThreadEntryPoint(void*) () at /lib64/libQt5WebKit.so.5
#4  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#5  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 41 (Thread 0x7f9dd67fa700 (LWP 21516)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8863be23 in JSC::GCThread::waitForNextPhase() () at /lib64/libQt5WebKit.so.5
#2  0x00007f9f8863beb0 in JSC::GCThread::gcThreadMain() () at /lib64/libQt5WebKit.so.5
#3  0x00007f9f88942151 in WTF::wtfThreadEntryPoint(void*) () at /lib64/libQt5WebKit.so.5
#4  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#5  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 40 (Thread 0x7f9dd6ffb700 (LWP 21515)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8863be23 in JSC::GCThread::waitForNextPhase() () at /lib64/libQt5WebKit.so.5
#2  0x00007f9f8863beb0 in JSC::GCThread::gcThreadMain() () at /lib64/libQt5WebKit.so.5
#3  0x00007f9f88942151 in WTF::wtfThreadEntryPoint(void*) () at /lib64/libQt5WebKit.so.5
#4  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#5  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 39 (Thread 0x7f9dd77fc700 (LWP 21514)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8863be23 in JSC::GCThread::waitForNextPhase() () at /lib64/libQt5WebKit.so.5
#2  0x00007f9f8863beb0 in JSC::GCThread::gcThreadMain() () at /lib64/libQt5WebKit.so.5
#3  0x00007f9f88942151 in WTF::wtfThreadEntryPoint(void*) () at /lib64/libQt5WebKit.so.5
#4  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#5  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 38 (Thread 0x7f9dd7ffd700 (LWP 21513)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8863be23 in JSC::GCThread::waitForNextPhase() () at /lib64/libQt5WebKit.so.5
#2  0x00007f9f8863beb0 in JSC::GCThread::gcThreadMain() () at /lib64/libQt5WebKit.so.5
#3  0x00007f9f88942151 in WTF::wtfThreadEntryPoint(void*) () at /lib64/libQt5WebKit.so.5
#4  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#5  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 37 (Thread 0x7f9ea88a6700 (LWP 21512)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8863afdc in JSC::BlockAllocator::blockFreeingThreadMain() () at /lib64/libQt5WebKit.so.5
#2  0x00007f9f88942151 in WTF::wtfThreadEntryPoint(void*) () at /lib64/libQt5WebKit.so.5
#3  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#4  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 36 (Thread 0x7f9ea9738700 (LWP 21511)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8891a8b6 in WTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5WebKit.so.5
#2  0x00007f9f8891a8d9 in  () at /lib64/libQt5WebKit.so.5
#3  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#4  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 35 (Thread 0x7f9eaa5ca700 (LWP 21499)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8ccf5b09 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8ccf6109 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8ccf62c0 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 34 (Thread 0x7f9eaadcb700 (LWP 21498)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8ccf5b09 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8ccf6109 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8ccf62c0 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 33 (Thread 0x7f9eabdfb700 (LWP 21496)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f79876bd4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f9f79876c19 in  () at /lib64/libQt5Script.so.5
#3  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#4  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 32 (Thread 0x7f9eb9118700 (LWP 21484)):
#0  0x00007f9f952e3bdd in read () at /lib64/libc.so.6
#1  0x00007f9f8186c450 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f9f81827c60 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f9f818280f4 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 31 (Thread 0x7f9eba76d700 (LWP 21481)):
#0  0x00007f9f81825187 in g_source_iter_next () at /lib64/libglib-2.0.so.0
#1  0x00007f9f8182763b in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182807b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 30 (Thread 0x7f9ec9e02700 (LWP 21471)):
#0  0x00007f9f952e800d in poll () at /lib64/libc.so.6
#1  0x00007f9f81828156 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#8  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 29 (Thread 0x7f9eca603700 (LWP 21470)):
#0  0x00007f9f8186d814 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f9f81827ffd in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#8  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 28 (Thread 0x7f9ecbfff700 (LWP 21468)):
#0  0x00007f9f952e3bdd in read () at /lib64/libc.so.6
#1  0x00007f9f8186c450 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f9f81827c60 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f9f818280f4 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 27 (Thread 0x7f9ed0c23700 (LWP 21460)):
#0  0x00007f9f952e800d in poll () at /lib64/libc.so.6
#1  0x00007f9f81828156 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#8  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7f9f00ff9700 (LWP 21453)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8ccf5b09 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8ccf6109 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8ccf62c0 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7f9f027fc700 (LWP 21450)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8c879b50 in mojo::system::Waiter::Wait(unsigned long, unsigned long*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8c861c50 in mojo::system::Core::WaitManyInternal(unsigned int const*, unsigned int const*, unsigned int, unsigned long, unsigned int*, mojo::system::HandleSignalsState*) () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8c861feb in mojo::system::Core::Wait(unsigned int, unsigned int, unsigned long, mojo::system::UserPointer<MojoHandleSignalsState>) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8c85d87a in MojoWait () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f8da5140e in mojo::common::MessagePumpMojo::WaitForReadyHandles(mojo::common::MessagePumpMojo::RunState const&) const () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f9f8da538a4 in mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState const&, bool) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8da538f5 in mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*, base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f8da539d9 in mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9f8ccf68ea in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#14 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7f9f02ffd700 (LWP 21449)):
#0  0x00007f9f71fd676a in do_read () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#1  0x00007f9f71fd966b in do_pstream_read_write () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#2  0x00007f9f71fd9a09 in srb_callback () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#3  0x00007f9f71fda28a in srbchannel_rwloop () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#4  0x00007f9f7446b9cc in pa_mainloop_dispatch () at /lib64/libpulse.so.0
#5  0x00007f9f7446bdcc in pa_mainloop_iterate () at /lib64/libpulse.so.0
#6  0x00007f9f7446be70 in pa_mainloop_run () at /lib64/libpulse.so.0
#7  0x00007f9f74479e99 in thread () at /lib64/libpulse.so.0
#8  0x00007f9f71fea178 in internal_thread_func () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#9  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7f9f037fe700 (LWP 21448)):
#0  0x00007f9f85a76809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8ccea222 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8cceaad5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8cccb6c1 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f9f8ccf68ea in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7f9f03fff700 (LWP 21447)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8c35a20d in cc::SingleThreadTaskGraphRunner::Run() () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8ccf619e in base::DelegateSimpleThread::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8ccf62c0 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f9f18ff9700 (LWP 21446)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8cceaa45 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8cceab15 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8cccb673 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f9f8ccf68ea in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f9f197fa700 (LWP 21445)):
#0  0x00007f9f95301ebc in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f9f95303ac4 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f9f7d58c86e in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f9f7d58ca64 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f9f7d5911e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f9f7d57b18a in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f9f8cca109e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f9f8bf61a28 in content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9f8bf61b6b in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9f8ccf6968 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#14 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f9f19ffb700 (LWP 21444)):
#0  0x00007f9f952e3c3d in write () at /lib64/libc.so.6
#1  0x00007f9f95266ab7 in _IO_new_file_write () at /lib64/libc.so.6
#2  0x00007f9f952673c8 in __GI__IO_file_xsputn () at /lib64/libc.so.6
#3  0x00007f9f9523ca65 in buffered_vfprintf () at /lib64/libc.so.6
#4  0x00007f9f95239c15 in vfprintf () at /lib64/libc.so.6
#5  0x00007f9f95303b19 in __fprintf_chk () at /lib64/libc.so.6
#6  0x00007f9f7d58c86e in _warn_helper () at /lib64/libevent-2.0.so.5
#7  0x00007f9f7d58ca64 in event_warn () at /lib64/libevent-2.0.so.5
#8  0x00007f9f7d5911e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#9  0x00007f9f7d57b18a in event_base_loop () at /lib64/libevent-2.0.so.5
#10 0x00007f9f8cca109e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f9f8bf61978 in content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#14 0x00007f9f8bf61bcb in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#15 0x00007f9f8ccf6968 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#16 0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#17 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#18 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f9f1a7fc700 (LWP 21443)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8cceaa45 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8cceab15 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8cccb673 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f9f8bf618c8 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8bf61bbb in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f8ccf6968 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#11 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f9f1affd700 (LWP 21442)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8cceaa45 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8cceab15 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8cccb673 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f9f8bf61818 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8bf61bab in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f8ccf6968 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#11 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f9f1b7fe700 (LWP 21441)):
#0  0x00007f9f95301ebc in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f9f95303ac4 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f9f7d58c86e in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f9f7d58ca64 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f9f7d5911e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f9f7d57b18a in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f9f8cca109e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f9f8bf61768 in content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9f8bf61b9b in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9f8ccf6968 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#14 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f9f1bfff700 (LWP 21440)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8cceaa45 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8cceab15 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8cccb673 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f9f8bf616b8 in content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8bf61b8b in content::BrowserThreadImpl::Run(base::MessageLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f8ccf6968 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#11 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f9f3c85d700 (LWP 21439)):
#0  0x00007f9f85a76809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8ccea222 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8ccf9558 in base::PosixDynamicThreadPool::WaitForTask() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8ccf9a8d in base::(anonymous namespace)::WorkerThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f9f3d05e700 (LWP 21438)):
#0  0x00007f9f85a76809 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8ccea222 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8ccf9558 in base::PosixDynamicThreadPool::WaitForTask() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8ccf9a8d in base::(anonymous namespace)::WorkerThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f9f3d85f700 (LWP 21437)):
#0  0x00007f9f85a76460 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f9f8cceaa45 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f9f8cceab15 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f9f8cccb673 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f9f8ccf68ea in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f9f3e060700 (LWP 21436)):
#0  0x00007f9f95301ebc in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f9f95303ac4 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f9f7d58c86e in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f9f7d58ca64 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f9f7d5911e8 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f9f7d57b18a in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f9f8cca114a in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f9f8ccdd8c4 in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f9f8ccc7855 in base::MessageLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f9f8ccf68ea in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f9f8ccf2c5c in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#12 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f9f3ffff700 (LWP 21428)):
#0  0x00007f9f8186d7f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f9f818276a6 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182807b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f9f54818700 (LWP 21426)):
#0  0x00007ffe07dfea00 in clock_gettime ()
#1  0x00007f9f95302686 in clock_gettime () at /lib64/libc.so.6
#2  0x00007f9f95f975e1 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x00007f9f960ec459 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x00007f9f960ec855 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x00007f9f960eda2c in timerSourcePrepareHelper(GTimerSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x00007f9f960edaf5 in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#7  0x00007f9f81827699 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#8  0x00007f9f8182807b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#9  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#10 0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#12 0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#13 0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#15 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f9f55ffb700 (LWP 21424)):
#0  0x00007f9f8186d814 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f9f8182814a in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#8  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f9f567fc700 (LWP 21422)):
#0  0x00007f9f8186d7f9 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f9f818276a6 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182807b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f9f56ffd700 (LWP 21420)):
#0  0x00007f9f952e800d in poll () at /lib64/libc.so.6
#1  0x00007f9f81828156 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#8  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f9f577fe700 (LWP 21418)):
#0  0x00007f9f818278d0 in g_main_context_query () at /lib64/libglib-2.0.so.0
#1  0x00007f9f818280c8 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#7  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#8  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f9f57fff700 (LWP 21417)):
#0  0x00007f9f8186d814 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f9f81827097 in g_main_context_acquire () at /lib64/libglib-2.0.so.0
#2  0x00007f9f81828005 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f9f5d4f7700 (LWP 21416)):
#0  0x00007f9f8186d814 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f9f81827ba1 in g_main_context_check () at /lib64/libglib-2.0.so.0
#2  0x00007f9f818280f4 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f9f960edd8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f9f95efc643 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f9f9709a7a9 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#8  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#10 0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f9f66bdb700 (LWP 21415)):
#0  0x00007f9f952e800d in poll () at /lib64/libc.so.6
#1  0x00007f9f80f1cd10 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f9f80f1eaa9 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f9f69986a19 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f9f95f00a1a in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f9f85a706ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9f952f3f6f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f9f7054e940 (LWP 21414)):
[KCrash Handler]
#6  0x00007f9f9522192f in raise () at /lib64/libc.so.6
#7  0x00007f9f9522352a in abort () at /lib64/libc.so.6
#8  0x00007f9f95265260 in __libc_message () at /lib64/libc.so.6
#9  0x00007f9f9526e8ea in _int_free () at /lib64/libc.so.6
#10 0x00007f9f9527231c in free () at /lib64/libc.so.6
#11 0x00007f9f655a26df in nouveau_fence_trigger_work () at /usr/lib64/dri/nouveau_dri.so
#12 0x00007f9f655a291e in nouveau_fence_update () at /usr/lib64/dri/nouveau_dri.so
#13 0x00007f9f655a2c43 in nouveau_fence_wait () at /usr/lib64/dri/nouveau_dri.so
#14 0x00007f9f652a1a1b in st_finish () at /usr/lib64/dri/nouveau_dri.so
#15 0x00007f9f652a1a60 in st_glFinish () at /usr/lib64/dri/nouveau_dri.so
#16 0x00007f9f9694f3c9 in QOpenGLWidgetPrivate::beginCompose() () at /lib64/libQt5Widgets.so.5
#17 0x00007f9f9691d851 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#18 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#19 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#20 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#21 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#22 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#23 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#24 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#25 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#26 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#27 0x00007f9f9691d817 in QWidgetPrivate::sendComposeStatus(QWidget*, bool) () at /lib64/libQt5Widgets.so.5
#28 0x00007f9f968f57e2 in QWidgetBackingStore::qt_flush(QWidget*, QRegion const&, QBackingStore*, QWidget*, QPoint const&, QPlatformTextureList*, QWidgetBackingStore*) () at /lib64/libQt5Widgets.so.5
#29 0x00007f9f968f6f89 in QWidgetBackingStore::flush(QWidget*) () at /lib64/libQt5Widgets.so.5
#30 0x00007f9f968f83a2 in QWidgetBackingStore::doSync() () at /lib64/libQt5Widgets.so.5
#31 0x00007f9f968f8dcf in QWidgetBackingStore::sync() () at /lib64/libQt5Widgets.so.5
#32 0x00007f9f96917d1f in QWidgetPrivate::syncBackingStore() () at /lib64/libQt5Widgets.so.5
#33 0x00007f9f9692fd08 in QWidget::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#34 0x00007f9f96a2e7cb in QMainWindow::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#35 0x00007f9f994847b7 in KMainWindow::event(QEvent*) () at /lib64/libKF5XmlGui.so.5
#36 0x00007f9f994c9365 in KXmlGuiWindow::event(QEvent*) () at /lib64/libKF5XmlGui.so.5
#37 0x00007f9f968e896c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#38 0x00007f9f968f0111 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#39 0x00007f9f960a012a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#40 0x00007f9f960a2800 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#41 0x00007f9f960edcf3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#42 0x00007f9f81827e42 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#43 0x00007f9f818281c0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#44 0x00007f9f8182826c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#45 0x00007f9f960edd6f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#46 0x00007f9f9609f0ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#47 0x00007f9f960a6bac in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#48 0x000055da7d152b34 in main ()

Possible duplicates by query: bug 369514, bug 369222, bug 369010.

Reported using DrKonqi
Comment 1 Laurent Montel 2016-11-24 08:25:43 UTC 
it's a problem with nouveau driver.