Bug 368016

Summary: Kmail2 (v5.3.0) Crash at will on startup
Product: [Applications] kmail2 Reporter: Ian <ianseeks>
Component: generalAssignee: kdepim bugs <pim-bugs-null>
Status: RESOLVED FIXED    
Severity: grave CC: svckd
Priority: NOR Keywords: drkonqi
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Ian 2016-08-30 15:48:06 UTC 
Application: kmail (5.3.0 (QtWebEngine))

Qt Version: 5.6.1
Frameworks Version: 5.25.0
Operating System: Linux 4.7.2-1-default x86_64
Distribution: "openSUSE Tumbleweed (20160812) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed: All i had done was load kmail2 and it displayed everything as normal, i didn;t have chance to click on anything

The crash can be reproduced sometimes.

-- Backtrace:
Application: KMail (kmail), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7fceca853940 (LWP 4257))]

Thread 34 (Thread 0x7fcdb1cac700 (LWP 4350)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3960129 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3960840 in base::SequencedWorkerPool::Worker::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb3960a10 in base::SimpleThread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fcebd488474 in start_thread (arg=0x7fcdb1cac700) at pthread_create.c:333
#6  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7fce33dab700 (LWP 4343)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceae425fc4 in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007fceae426009 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007fcebd488474 in start_thread (arg=0x7fce33dab700) at pthread_create.c:333
#4  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7fce34e10700 (LWP 4331)):
#0  0x00007fcec75f1a1d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcebcc65036 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce4c002b40, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce34e0fc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x3378800) at thread/qthread_unix.cpp:341
#7  0x00007fcebd488474 in start_thread (arg=0x7fce34e10700) at pthread_create.c:333
#8  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7fce3583b700 (LWP 4320)):
#0  0x00007fff433c4989 in ?? ()
#1  0x00007fff433c4c61 in clock_gettime ()
#2  0x00007fcec76070a6 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7fce3583a9e0) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fcec7fb2d96 in qt_clock_gettime (ts=0x7fce3583a9e0, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#4  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#5  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#6  0x00007fcec8132699 in QTimerInfoList::updateCurrentTime (this=this@entry=0x32da540) at kernel/qtimerinfo_unix.cpp:84
#7  0x00007fcec8132c45 in QTimerInfoList::timerWait (this=0x32da540, tm=...) at kernel/qtimerinfo_unix.cpp:381
#8  0x00007fcec8133fde in timerSourcePrepareHelper (timeout=0x7fce3583aab4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:126
#9  timerSourcePrepare (source=<optimized out>, timeout=0x7fce3583aab4) at kernel/qeventdispatcher_glib.cpp:159
#10 0x00007fcebcc64589 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#11 0x00007fcebcc64f5b in ?? () from /usr/lib64/libglib-2.0.so.0
#12 0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#13 0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x32da390, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#14 0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce3583ac80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#15 0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#16 0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x32d7140) at thread/qthread_unix.cpp:341
#17 0x00007fcebd488474 in start_thread (arg=0x7fce3583b700) at pthread_create.c:333
#18 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7fce37cea700 (LWP 4310)):
#0  0x00007fcec75f1a1d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcebcc65036 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce8c01fd00, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce37ce9c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x2cb9290) at thread/qthread_unix.cpp:341
#7  0x00007fcebd488474 in start_thread (arg=0x7fce37cea700) at pthread_create.c:333
#8  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7fce384eb700 (LWP 4300)):
#0  0x00007fcec75f1a1d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcebcc65036 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce84003d80, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce384eac80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x29ccad0) at thread/qthread_unix.cpp:341
#7  0x00007fcebd488474 in start_thread (arg=0x7fce384eb700) at pthread_create.c:333
#8  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7fce3c7f7700 (LWP 4296)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb37b8b20 in mojo::system::Waiter::Wait(unsigned long, unsigned int*) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb37a50fc in mojo::system::Core::WaitManyInternal(unsigned int const*, unsigned int const*, unsigned int, unsigned long, unsigned int*, mojo::system::HandleSignalsState*) () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb37a55a7 in mojo::system::Core::WaitMany(mojo::system::UserPointer<unsigned int const>, mojo::system::UserPointer<unsigned int const>, unsigned int, unsigned long, mojo::system::UserPointer<unsigned int>, mojo::system::UserPointer<MojoHandleSignalsState>) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb37a1e25 in MojoWaitMany () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fceb4ea9457 in mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState const&, bool) () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fceb4ea968e in mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*, base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb4ea97c9 in mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fceb3960ec6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007fcebd488474 in start_thread (arg=0x7fce3c7f7700) at pthread_create.c:333
#13 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7fce3cff8700 (LWP 4295)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3960129 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3960840 in base::SequencedWorkerPool::Worker::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb3960a10 in base::SimpleThread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fcebd488474 in start_thread (arg=0x7fce3cff8700) at pthread_create.c:333
#6  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7fce417fa700 (LWP 4294)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fcec7608364 in ___fprintf_chk (fp=0x7fcec78b0750 <_IO_stdfile_2_lock>, flag=1, format=0x7fcea7944b54 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fcea792ce5e in ?? () from /usr/lib64/libevent-2.0.so.5
#3  0x00007fcea792d037 in event_warn () from /usr/lib64/libevent-2.0.so.5
#4  0x00007fcea7931568 in ?? () from /usr/lib64/libevent-2.0.so.5
#5  0x00007fcea791bd27 in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#6  0x00007fceb3912f4e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fceb3960ec6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fcebd488474 in start_thread (arg=0x7fce417fa700) at pthread_create.c:333
#12 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7fce45ffb700 (LWP 4293)):
[KCrash Handler]
#6  0x00007fcec7546975 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007fcec7547d8a in __GI_abort () at abort.c:78
#8  0x00007fcec75823d0 in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7fcec767b0f0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#9  0x00007fcec7587bd6 in malloc_printerr (action=3, str=0x7fcec767b248 "double free or corruption (fasttop)", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:5004
#10 0x00007fcec75883ae in _int_free (av=0x7fcec78aeb00 <main_arena>, p=0x31d9d60, have_lock=0) at malloc.c:3865
#11 0x00007fce9c84849f in nouveau_fence_trigger_work (fence=fence@entry=0x2cecb70) at nouveau_fence.c:58
#12 0x00007fce9c8486de in nouveau_fence_update (screen=screen@entry=0x239f090, flushed=flushed@entry=false) at nouveau_fence.c:132
#13 0x00007fce9c848a03 in nouveau_fence_wait (fence=0x33e9100, debug=0x0) at nouveau_fence.c:223
#14 0x00007fce9c5bac0b in st_finish (st=st@entry=0x7fce78070420) at state_tracker/st_cb_flush.c:101
#15 0x00007fce9c5bac50 in st_glFinish (ctx=<optimized out>) at state_tracker/st_cb_flush.c:136
#16 0x00007fceb40c5d21 in gpu::gles2::GLES2DecoderImpl::DoFinish() () from /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007fceb40c5d56 in gpu::gles2::GLES2DecoderImpl::HandleFinish(unsigned int, void const*) () from /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007fceb40cdaea in gpu::error::Error gpu::gles2::GLES2DecoderImpl::DoCommandsImpl<false>(unsigned int, void const*, int, int*) () from /usr/lib64/libQt5WebEngineCore.so.5
#19 0x00007fceb411490a in gpu::CommandParser::ProcessCommands(int) () from /usr/lib64/libQt5WebEngineCore.so.5
#20 0x00007fceb40e4b92 in gpu::GpuScheduler::PutChanged() () from /usr/lib64/libQt5WebEngineCore.so.5
#21 0x00007fceb35b6c29 in content::GpuCommandBufferStub::OnAsyncFlush(int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#22 0x00007fceb35bb8b4 in content::GpuCommandBufferStub::OnMessageReceived(IPC::Message const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#23 0x00007fceb359b2df in content::MessageRouter::RouteMessage(IPC::Message const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#24 0x00007fceb35b5853 in content::GpuChannel::HandleMessage() () from /usr/lib64/libQt5WebEngineCore.so.5
#25 0x00007fceb39858f0 in base::debug::TaskAnnotator::RunTask(char const*, char const*, base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#26 0x00007fceb3935874 in base::MessageLoop::RunTask(base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#27 0x00007fceb3936069 in base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#28 0x00007fceb3936522 in base::MessageLoop::DoWork() () from /usr/lib64/libQt5WebEngineCore.so.5
#29 0x00007fceb39387c9 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#30 0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#31 0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#32 0x00007fceb3960ec6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#33 0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#34 0x00007fcebd488474 in start_thread (arg=0x7fce45ffb700) at pthread_create.c:333
#35 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fce467fc700 (LWP 4292)):
#0  0x00007fcec75f1a1d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fceaafb9be1 in ?? () from /usr/lib64/libpulse.so.0
#2  0x00007fceaafab3b1 in pa_mainloop_poll () from /usr/lib64/libpulse.so.0
#3  0x00007fceaafaba4e in pa_mainloop_iterate () from /usr/lib64/libpulse.so.0
#4  0x00007fceaafabb00 in pa_mainloop_run () from /usr/lib64/libpulse.so.0
#5  0x00007fceaafb9b29 in ?? () from /usr/lib64/libpulse.so.0
#6  0x00007fcea3dcb148 in ?? () from /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#7  0x00007fcebd488474 in start_thread (arg=0x7fce467fc700) at pthread_create.c:333
#8  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fce46ffd700 (LWP 4291)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3955e95 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3955f64 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb3938813 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fceb3960ec6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fcebd488474 in start_thread (arg=0x7fce46ffd700) at pthread_create.c:333
#9  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fce477fe700 (LWP 4290)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3194209 in cc::TaskGraphRunner::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3960a10 in base::SimpleThread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fcebd488474 in start_thread (arg=0x7fce477fe700) at pthread_create.c:333
#5  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fce47fff700 (LWP 4289)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3955e95 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3955f64 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb3938813 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fceb3960ec6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fcebd488474 in start_thread (arg=0x7fce47fff700) at pthread_create.c:333
#9  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fce54ff9700 (LWP 4288)):
#0  0x00007fcec75edadd in write () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcec7583b7f in _IO_new_file_write (f=0x7fcec78af520 <_IO_2_1_stderr_>, data=0x7fce54ff5b40, n=39) at fileops.c:1263
#2  0x00007fcec7583143 in new_do_write (fp=fp@entry=0x7fcec78af520 <_IO_2_1_stderr_>, data=data@entry=0x7fce54ff5b40 "[warn] epoll_wait: Bad file descriptor\n", to_do=to_do@entry=39) at fileops.c:518
#3  0x00007fcec758417e in _IO_new_file_xsputn (f=0x7fcec78af520 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1342
#4  0x00007fcec755d034 in buffered_vfprintf (s=0x7fcec78af520 <_IO_2_1_stderr_>, format=<optimized out>, args=<optimized out>) at vfprintf.c:2341
#5  0x00007fcec755a38d in _IO_vfprintf_internal (s=s@entry=0x7fcec78af520 <_IO_2_1_stderr_>, format=0x7fcea7944b54 "[%s] %s\n", ap=ap@entry=0x7fce54ff80d8) at vfprintf.c:1293
#6  0x00007fcec76083b9 in ___fprintf_chk (fp=0x7fcec78af520 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007fcea792ce5e in ?? () from /usr/lib64/libevent-2.0.so.5
#8  0x00007fcea792d037 in event_warn () from /usr/lib64/libevent-2.0.so.5
#9  0x00007fcea7931568 in ?? () from /usr/lib64/libevent-2.0.so.5
#10 0x00007fcea791bd27 in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#11 0x00007fceb3912f4e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007fceb2e0e988 in content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007fceb2e0eaeb in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007fceb3960f48 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007fcebd488474 in start_thread (arg=0x7fce54ff9700) at pthread_create.c:333
#19 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fce557fa700 (LWP 4287)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fcec7608364 in ___fprintf_chk (fp=0x7fcec78b0750 <_IO_stdfile_2_lock>, flag=1, format=0x7fcea7944b54 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fcea792ce5e in ?? () from /usr/lib64/libevent-2.0.so.5
#3  0x00007fcea792d037 in event_warn () from /usr/lib64/libevent-2.0.so.5
#4  0x00007fcea7931568 in ?? () from /usr/lib64/libevent-2.0.so.5
#5  0x00007fcea791bd27 in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#6  0x00007fceb3912f4e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fceb2e0e8d8 in content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fceb2e0eb4b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fceb3960f48 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007fcebd488474 in start_thread (arg=0x7fce557fa700) at pthread_create.c:333
#14 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fce55ffb700 (LWP 4286)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3955e95 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3955f64 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb3938813 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fceb2e0e828 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb2e0eb3b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fceb3960f48 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fcebd488474 in start_thread (arg=0x7fce55ffb700) at pthread_create.c:333
#11 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fce567fc700 (LWP 4285)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3955e95 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3955f64 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb3938813 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fceb2e0e778 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb2e0eb2b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fceb3960f48 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fcebd488474 in start_thread (arg=0x7fce567fc700) at pthread_create.c:333
#11 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fce56ffd700 (LWP 4284)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fcec7608364 in ___fprintf_chk (fp=0x7fcec78b0750 <_IO_stdfile_2_lock>, flag=1, format=0x7fcea7944b54 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fcea792ce5e in ?? () from /usr/lib64/libevent-2.0.so.5
#3  0x00007fcea792d037 in event_warn () from /usr/lib64/libevent-2.0.so.5
#4  0x00007fcea7931568 in ?? () from /usr/lib64/libevent-2.0.so.5
#5  0x00007fcea791bd27 in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#6  0x00007fceb3912f4e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fceb2e0e6c8 in content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fceb2e0eb1b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fceb3960f48 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007fcebd488474 in start_thread (arg=0x7fce56ffd700) at pthread_create.c:333
#14 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fce577fe700 (LWP 4283)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3955e95 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3955f64 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb3938813 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fceb2e0e618 in content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb2e0eb0b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fceb3960f48 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fcebd488474 in start_thread (arg=0x7fce577fe700) at pthread_create.c:333
#11 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fce57fff700 (LWP 4282)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fceb3955682 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3963bb9 in base::PosixDynamicThreadPool::WaitForTask() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb39640f3 in base::(anonymous namespace)::WorkerThread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fcebd488474 in start_thread (arg=0x7fce57fff700) at pthread_create.c:333
#6  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fce6c95a700 (LWP 4281)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007fceb3955682 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3963bb9 in base::PosixDynamicThreadPool::WaitForTask() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb39640f3 in base::(anonymous namespace)::WorkerThread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fcebd488474 in start_thread (arg=0x7fce6c95a700) at pthread_create.c:333
#6  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fce6d15b700 (LWP 4280)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceb3955e95 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007fceb3955f64 in base::WaitableEvent::Wait() () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007fceb3938813 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007fceb3960ec6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fcebd488474 in start_thread (arg=0x7fce6d15b700) at pthread_create.c:333
#9  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fce6d95c700 (LWP 4279)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fcec7608364 in ___fprintf_chk (fp=0x7fcec78b0750 <_IO_stdfile_2_lock>, flag=1, format=0x7fcea7944b54 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fcea792ce5e in ?? () from /usr/lib64/libevent-2.0.so.5
#3  0x00007fcea792d037 in event_warn () from /usr/lib64/libevent-2.0.so.5
#4  0x00007fcea7931568 in ?? () from /usr/lib64/libevent-2.0.so.5
#5  0x00007fcea791bd27 in event_base_loop () from /usr/lib64/libevent-2.0.so.5
#6  0x00007fceb3912fe2 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007fceb394945a in base::RunLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007fceb3934df5 in base::MessageLoop::Run() () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007fceb3960ec6 in base::Thread::ThreadMain() () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007fceb395d5cd in base::(anonymous namespace)::ThreadFunc(void*) () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007fcebd488474 in start_thread (arg=0x7fce6d95c700) at pthread_create.c:333
#12 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fce6fa77700 (LWP 4275)):
#0  0x00007fcebcca9037 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fcebcc649e4 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc64fd4 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce6fa76c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#7  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x26c7760) at thread/qthread_unix.cpp:341
#8  0x00007fcebd488474 in start_thread (arg=0x7fce6fa77700) at pthread_create.c:333
#9  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fce70278700 (LWP 4273)):
#0  0x00007fcebcc64609 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fcebcc64f5b in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce70277c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x2676c20) at thread/qthread_unix.cpp:341
#7  0x00007fcebd488474 in start_thread (arg=0x7fce70278700) at pthread_create.c:333
#8  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fce893cd700 (LWP 4271)):
#0  0x00007fcec75eda7d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcebcca7c70 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc64b06 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcebcc64fd4 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#6  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce893ccc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#8  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x24ff8f0) at thread/qthread_unix.cpp:341
#9  0x00007fcebd488474 in start_thread (arg=0x7fce893cd700) at pthread_create.c:333
#10 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fce89dec700 (LWP 4265)):
#0  0x00007fcebcca9034 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fcebcc64edd in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce740008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce89debc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x24d3da0) at thread/qthread_unix.cpp:341
#7  0x00007fcebd488474 in start_thread (arg=0x7fce89dec700) at pthread_create.c:333
#8  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fce8a5ed700 (LWP 4263)):
#0  0x00007fcec75eda7d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcebcca7c70 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc64b06 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcebcc64fd4 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce800008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#6  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce8a5ecc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#8  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x24f3c30) at thread/qthread_unix.cpp:341
#9  0x00007fcebd488474 in start_thread (arg=0x7fce8a5ed700) at pthread_create.c:333
#10 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fce8adee700 (LWP 4261)):
#0  0x00007fcec75f1a1d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcebcc65036 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce7c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce8adedc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x253c1d0) at thread/qthread_unix.cpp:341
#7  0x00007fcebd488474 in start_thread (arg=0x7fce8adee700) at pthread_create.c:333
#8  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fce8b5ef700 (LWP 4260)):
#0  0x00007fcec75f1a1d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcebcc65036 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce8b5eec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fcec7f023b3 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x24d2cd0) at thread/qthread_unix.cpp:341
#7  0x00007fcebd488474 in start_thread (arg=0x7fce8b5ef700) at pthread_create.c:333
#8  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fce90e92700 (LWP 4259)):
#0  0x00007fcebcca9034 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fcebcc6457c in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fcebcc64f5b in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x7fce8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fce90e91c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fcec7f023b3 in QThread::exec (this=this@entry=0x7fcec67d7d20 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
#7  0x00007fcec65649b5 in QDBusConnectionManager::run (this=0x7fcec67d7d20 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:189
#8  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x7fcec67d7d20 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341
#9  0x00007fcebd488474 in start_thread (arg=0x7fce90e92700) at pthread_create.c:333
#10 0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fce9e411700 (LWP 4258)):
#0  0x00007fcec75f1a1d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fceba891410 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fceba8931a9 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fce9fefb7b9 in QXcbEventReader::run (this=0x2300720) at qxcbconnection.cpp:1325
#4  0x00007fcec7f072d8 in QThreadPrivate::start (arg=0x2300720) at thread/qthread_unix.cpp:341
#5  0x00007fcebd488474 in start_thread (arg=0x7fce9e411700) at pthread_create.c:333
#6  0x00007fcec75fa3ed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fceca853940 (LWP 4257)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fceba891687 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fceba892ecf in ?? () from /usr/lib64/libxcb.so.1
#3  0x00007fceba892fe2 in xcb_wait_for_reply () from /usr/lib64/libxcb.so.1
#4  0x00007fce9ff1d63f in QXcbCursor::queryPointer (c=0x22ebef0, virtualDesktop=virtualDesktop@entry=0x0, pos=pos@entry=0x7fff43387430, keybMask=keybMask@entry=0x0) at qxcbcursor.cpp:618
#5  0x00007fce9ff1d843 in QXcbCursor::pos (this=<optimized out>) at qxcbcursor.cpp:642
#6  0x00007fcec8643cb4 in QCursor::pos (screen=<optimized out>) at kernel/qcursor.cpp:184
#7  0x00007fcec8643ea1 in QCursor::pos () at kernel/qcursor.cpp:212
#8  0x00007fcec8e29cab in QApplicationPrivate::sendSyntheticEnterLeave (this=<optimized out>, widget=widget@entry=0x3203340) at kernel/qapplication.cpp:2833
#9  0x00007fcec8e660b0 in QWidget::~QWidget (this=0x3203340, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1623
#10 0x00007fcebe52dc2a in QtWebEngineCore::RenderWidgetHostViewQtDelegateWidget::~RenderWidgetHostViewQtDelegateWidget (this=0x3203340, __in_chrg=<optimized out>) at ./render_widget_host_view_qt_delegate_widget.h:55
#11 QtWebEngineCore::RenderWidgetHostViewQtDelegateWidget::~RenderWidgetHostViewQtDelegateWidget (this=0x3203340, __in_chrg=<optimized out>) at ./render_widget_host_view_qt_delegate_widget.h:55
#12 0x00007fceb2333e54 in base::DefaultDeleter<QtWebEngineCore::RenderWidgetHostViewQtDelegate>::operator() (this=0x338f860, ptr=<optimized out>) at /usr/src/debug/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/memory/scoped_ptr.h:128
#13 base::internal::scoped_ptr_impl<QtWebEngineCore::RenderWidgetHostViewQtDelegate, base::DefaultDeleter<QtWebEngineCore::RenderWidgetHostViewQtDelegate> >::~scoped_ptr_impl (this=0x338f860, __in_chrg=<optimized out>) at /usr/src/debug/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/memory/scoped_ptr.h:222
#14 scoped_ptr<QtWebEngineCore::RenderWidgetHostViewQtDelegate, base::DefaultDeleter<QtWebEngineCore::RenderWidgetHostViewQtDelegate> >::~scoped_ptr (this=0x338f860, __in_chrg=<optimized out>) at /usr/src/debug/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/memory/scoped_ptr.h:312
#15 QtWebEngineCore::RenderWidgetHostViewQt::~RenderWidgetHostViewQt (this=0x338f480, __in_chrg=<optimized out>) at /usr/src/debug/qtwebengine-opensource-src-5.6.1/src/core/render_widget_host_view_qt.cpp:270
#16 0x00007fceb2333fe9 in QtWebEngineCore::RenderWidgetHostViewQt::~RenderWidgetHostViewQt (this=0x338f480, __in_chrg=<optimized out>) at /usr/src/debug/qtwebengine-opensource-src-5.6.1/src/core/render_widget_host_view_qt.cpp:275
#17 0x00007fceb2ecd9c9 in content::RenderWidgetHostImpl::RendererExited(base::TerminationStatus, int) [clone .part.229] () from /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007fceb2ec2139 in content::RenderViewHostImpl::RenderProcessExited(content::RenderProcessHost*, base::TerminationStatus, int) () from /usr/lib64/libQt5WebEngineCore.so.5
#19 0x00007fceb2ec088e in content::RenderProcessHostImpl::ProcessDied(bool, content::RenderProcessHost::RendererClosedDetails*) () from /usr/lib64/libQt5WebEngineCore.so.5
#20 0x00007fceb39858f0 in base::debug::TaskAnnotator::RunTask(char const*, char const*, base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#21 0x00007fceb3935874 in base::MessageLoop::RunTask(base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#22 0x00007fceb3936069 in base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) () from /usr/lib64/libQt5WebEngineCore.so.5
#23 0x00007fceb3936522 in base::MessageLoop::DoWork() () from /usr/lib64/libQt5WebEngineCore.so.5
#24 0x00007fceb2316a25 in QtWebEngineCore::(anonymous namespace)::MessagePumpForUIQt::handleScheduledWork (this=<optimized out>) at /usr/src/debug/qtwebengine-opensource-src-5.6.1/src/core/content_browser_client_qt.cpp:183
#25 QtWebEngineCore::(anonymous namespace)::MessagePumpForUIQt::customEvent (this=0x26526a0, ev=<optimized out>) at /usr/src/debug/qtwebengine-opensource-src-5.6.1/src/core/content_browser_client_qt.cpp:165
#26 0x00007fcec810ccb3 in QObject::event (this=0x26526a0, e=<optimized out>) at kernel/qobject.cpp:1278
#27 0x00007fcec8e24aec in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x26526a0, e=0x7fce5c0049d0) at kernel/qapplication.cpp:3804
#28 0x00007fcec8e29f8f in QApplication::notify (this=0x7fff43388680, receiver=0x26526a0, e=0x7fce5c0049d0) at kernel/qapplication.cpp:3561
#29 0x00007fcec80dea20 in QCoreApplication::notifyInternal2 (receiver=0x26526a0, event=event@entry=0x7fce5c0049d0) at kernel/qcoreapplication.cpp:1015
#30 0x00007fcec80e099c in QCoreApplication::sendEvent (event=0x7fce5c0049d0, receiver=<optimized out>) at kernel/qcoreapplication.h:225
#31 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x22d7aa0) at kernel/qcoreapplication.cpp:1650
#32 0x00007fcec80e0e58 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
#33 0x00007fcec81346c3 in postEventSourceDispatch (s=0x232f3e0) at kernel/qeventdispatcher_glib.cpp:270
#34 0x00007fcebcc64e37 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#35 0x00007fcebcc650a0 in ?? () from /usr/lib64/libglib-2.0.so.0
#36 0x00007fcebcc6514c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#37 0x00007fcec8134aeb in QEventDispatcherGlib::processEvents (this=0x232e5b0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#38 0x00007fcec80dc76a in QEventLoop::exec (this=this@entry=0x7fff43388010, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#39 0x00007fcec80e4f6c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#40 0x00007fcec862db6c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1607
#41 0x00007fcec8e21b25 in QApplication::exec () at kernel/qapplication.cpp:2979
#42 0x0000000000403d2f in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kdepim-16.08.0/kmail/src/main.cpp:157

Possible duplicates by query: bug 358346, bug 355228.

Reported using DrKonqi
Comment 1 Ian 2016-08-30 15:49:58 UTC 
*** Bug 367632 has been marked as a duplicate of this bug. ***
Comment 2 Ian 2016-09-26 09:54:35 UTC 
closing, not sure if its been looked at but have changed versions since this was logged