Bug 382867

Summary: akregator crash while selecting individual posts
Product: [Applications] akregator Reporter: gev000
Component: generalAssignee: kdepim bugs <kdepim-bugs>
Status: RESOLVED DOWNSTREAM    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version: 5.5.1   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description gev000 2017-07-28 16:02:28 UTC 
Application: akregator (5.5.1)

Qt Version: 5.7.1
Frameworks Version: 5.36.0
Operating System: Linux 4.11.11-300.fc26.x86_64 x86_64
Distribution: "Fedora release 26 (Twenty Six)"

-- Information about the crash:
- What I was doing when the application crashed: Looking though various feeds and selecting an article to read made akregator crash. Also selecting a link in the article made it crash. This is a fedora 26 installation  now, but the akregator setup, feeds, cache etc  have been accumulating since before fedora 20.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Akregator (akregator), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2f77cf12c0 (LWP 2473))]

Thread 24 (Thread 0x7f2ef1435700 (LWP 2514)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f7e8df534 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f2f7e8df579 in  () at /lib64/libQt5Script.so.5
#3  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#4  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7f2ef2307700 (LWP 2509)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f90204725 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f90204c07 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f902059a1 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#6  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7f2f217fa700 (LWP 2508)):
#0  0x00007f2f8635ea10 in g_thread_self () at /lib64/libglib-2.0.so.0
#1  0x00007f2f8633766d in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#2  0x00007f2f98266e6b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#3  0x00007f2f9821760a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f2f9806f99a in QThread::exec() () at /lib64/libQt5Core.so.5
#5  0x00007f2f98073c9e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#6  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#7  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f2f21ffb700 (LWP 2507)):
#0  0x00007f2f9744b1fd in write () at /lib64/libc.so.6
#1  0x00007f2f973c91fd in _IO_new_file_write () at /lib64/libc.so.6
#2  0x00007f2f973c9b9f in __GI__IO_file_xsputn () at /lib64/libc.so.6
#3  0x00007f2f9739d717 in buffered_vfprintf () at /lib64/libc.so.6
#4  0x00007f2f9739a756 in vfprintf () at /lib64/libc.so.6
#5  0x00007f2f9746c2a6 in __fprintf_chk () at /lib64/libc.so.6
#6  0x00007f2f81e85880 in _warn_helper () at /lib64/libevent-2.0.so.5
#7  0x00007f2f81e85a44 in event_warn () at /lib64/libevent-2.0.so.5
#8  0x00007f2f81e8a1e0 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#9  0x00007f2f81e74dbe in event_base_loop () at /lib64/libevent-2.0.so.5
#10 0x00007f2f901d55ad in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f2f90205f66 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#14 0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#15 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#16 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f2f227fc700 (LWP 2506)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f901fa409 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f901fa437 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f901d4f5b in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2f90205f66 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#9  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f2f22ffd700 (LWP 2505)):
#0  0x00007f2f9744fa9d in poll () at /lib64/libc.so.6
#1  0x00007f2f855feb71 in poll_func () at /lib64/libpulse.so.0
#2  0x00007f2f855f0530 in pa_mainloop_poll () at /lib64/libpulse.so.0
#3  0x00007f2f855f0bc0 in pa_mainloop_iterate () at /lib64/libpulse.so.0
#4  0x00007f2f855f0c50 in pa_mainloop_run () at /lib64/libpulse.so.0
#5  0x00007f2f855feab9 in thread () at /lib64/libpulse.so.0
#6  0x00007f2f7b688078 in internal_thread_func () at /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#7  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#8  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f2f237fe700 (LWP 2504)):
#0  0x00007f2f8c7bed1a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f90233172 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f901fa38e in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f901d4fab in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2f90205f66 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#9  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f2f23fff700 (LWP 2503)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f90982ea0 in cc::SingleThreadTaskGraphRunner::Run() () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f902059a1 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#5  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f2f397fa700 (LWP 2501)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f90204725 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f90204c07 in base::SequencedWorkerPool::Worker::Run() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f902059a1 in base::SimpleThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#6  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f2f38ff9700 (LWP 2502)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f901fa409 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f901fa437 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f901d4f5b in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2f90205f66 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#9  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f2f39ffb700 (LWP 2500)):
#0  0x00007f2f9746a48c in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f2f9746c254 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f2f81e85880 in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f2f81e85a44 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f2f81e8a1e0 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f2f81e74dbe in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f2f901d5559 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f2f8fad6a78 in content::BrowserThreadImpl::IOThreadRun(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2f8fad702b in content::BrowserThreadImpl::Run(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f2f90206018 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#14 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f2f3a7fc700 (LWP 2499)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f901fa409 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f901fa437 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f901d4f5b in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2f8fad69c8 in content::BrowserThreadImpl::CacheThreadRun(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f8fad701b in content::BrowserThreadImpl::Run(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f90206018 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#11 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f2f3affd700 (LWP 2498)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f901fa409 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f901fa437 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f901d4f5b in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2f8fad6918 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f8fad700b in content::BrowserThreadImpl::Run(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f90206018 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#11 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f2f3b7fe700 (LWP 2497)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f901fa409 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f901fa437 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f901d4f5b in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2f8fad6868 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f8fad6ffb in content::BrowserThreadImpl::Run(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f90206018 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#11 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f2f3bfff700 (LWP 2496)):
#0  0x00007f2f9746a48c in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f2f9746c254 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f2f81e85880 in _warn_helper () at /lib64/libevent-2.0.so.5
#3  0x00007f2f81e85a44 in event_warn () at /lib64/libevent-2.0.so.5
#4  0x00007f2f81e8a1e0 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#5  0x00007f2f81e74dbe in event_base_loop () at /lib64/libevent-2.0.so.5
#6  0x00007f2f901d5559 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f2f8fad67b8 in content::BrowserThreadImpl::FileThreadRun(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2f8fad6feb in content::BrowserThreadImpl::Run(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f2f90206018 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#14 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f2f58ff9700 (LWP 2495)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f901fa409 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f901fa437 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f901d4f5b in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2f8fad6708 in content::BrowserThreadImpl::DBThreadRun(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f8fad6fdb in content::BrowserThreadImpl::Run(base::RunLoop*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f90206018 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#11 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f2f597fa700 (LWP 2494)):
#0  0x00007f2f8c7bed1a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f90233172 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f90209229 in base::PosixDynamicThreadPool::WaitForTask() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f9020978b in base::(anonymous namespace)::WorkerThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#6  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f2f59ffb700 (LWP 2490)):
#0  0x00007f2f8c7bed1a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f90233172 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f90209229 in base::PosixDynamicThreadPool::WaitForTask() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f9020978b in base::(anonymous namespace)::WorkerThread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#6  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f2f5a7fc700 (LWP 2489)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f901fa409 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2f901fa437 in base::WaitableEvent::Wait() () at /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2f901d4f5b in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2f90205f66 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#9  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f2f5affd700 (LWP 2487)):
#0  0x00007f2f973df418 in __strncmp_sse2 () at /lib64/libc.so.6
#1  0x00007f2f973853da in getenv () at /lib64/libc.so.6
#2  0x00007f2f9737c114 in __dcigettext () at /lib64/libc.so.6
#3  0x00007f2f973dee28 in strerror_r () at /lib64/libc.so.6
#4  0x00007f2f973ded4f in strerror () at /lib64/libc.so.6
#5  0x00007f2f81e85a31 in event_warn () at /lib64/libevent-2.0.so.5
#6  0x00007f2f81e8a1e0 in epoll_dispatch () at /lib64/libevent-2.0.so.5
#7  0x00007f2f81e74dbe in event_base_loop () at /lib64/libevent-2.0.so.5
#8  0x00007f2f901d55ad in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /lib64/libQt5WebEngineCore.so.5
#9  0x00007f2f901d1828 in base::MessageLoop::RunHandler() () at /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2f901ee26b in base::RunLoop::Run() () at /lib64/libQt5WebEngineCore.so.5
#11 0x00007f2f90205f66 in base::Thread::ThreadMain() () at /lib64/libQt5WebEngineCore.so.5
#12 0x00007f2f9020206b in base::(anonymous namespace)::ThreadFunc(void*) () at /lib64/libQt5WebEngineCore.so.5
#13 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#14 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f2f625f2700 (LWP 2479)):
#0  0x00007f2f98266b0e in timerSourcePrepareHelper(GTimerSource*, int*) () at /lib64/libQt5Core.so.5
#1  0x00007f2f98266bae in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#2  0x00007f2f86336ac9 in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#3  0x00007f2f8633749b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f2f8633767c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f2f98266e6b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f2f9821760a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f2f9806f99a in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f2f99519a39 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#9  0x00007f2f98073c9e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#11 0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f2f63288700 (LWP 2477)):
#0  0x00007f2f8c7be81b in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f2f6728164b in util_queue_thread_func () at /usr/lib64/dri/nouveau_dri.so
#2  0x00007f2f67281387 in impl_thrd_routine () at /usr/lib64/dri/nouveau_dri.so
#3  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#4  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f2f6e0b7700 (LWP 2476)):
#0  0x00007f2f9744fa9d in poll () at /lib64/libc.so.6
#1  0x00007f2f85a2bc97 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f2f85a2da8a in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f2f71045ba9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f2f98073c9e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f2f8c7b836d in start_thread () at /lib64/libpthread.so.0
#6  0x00007f2f9745bb8f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f2f77cf12c0 (LWP 2473)):
[KCrash Handler]
#6  0x00007f2f9738166b in raise () at /lib64/libc.so.6
#7  0x00007f2f97383470 in abort () at /lib64/libc.so.6
#8  0x00007f2f97379d2a in __assert_fail_base () at /lib64/libc.so.6
#9  0x00007f2f97379da2 in  () at /lib64/libc.so.6
#10 0x00007f2f66d2bd1d in  () at /lib64/libdrm_nouveau.so.2
#11 0x00007f2f66d2bcd6 in nouveau_pushbuf_data () at /lib64/libdrm_nouveau.so.2
#12 0x00007f2f66d2bda4 in pushbuf_submit.isra () at /lib64/libdrm_nouveau.so.2
#13 0x00007f2f66d2c04f in pushbuf_flush () at /lib64/libdrm_nouveau.so.2
#14 0x00007f2f66d2cbe0 in nouveau_pushbuf_kick () at /lib64/libdrm_nouveau.so.2
#15 0x00007f2f674d0236 in nv50_flush () at /usr/lib64/dri/nouveau_dri.so
#16 0x00007f2f6717f4bb in st_context_flush () at /usr/lib64/dri/nouveau_dri.so
#17 0x00007f2f6731393a in dri_flush () at /usr/lib64/dri/nouveau_dri.so
#18 0x00007f2f6cd5e23f in loader_dri3_swap_buffers_msc () at /lib64/libGLX_mesa.so.0
#19 0x00007f2f9cd5266d in QGLXContext::swapBuffers(QPlatformSurface*) () at /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#20 0x00007f2f98585fda in QOpenGLContext::swapBuffers(QSurface*) () at /lib64/libQt5Gui.so.5
#21 0x00007f2f987938cf in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () at /lib64/libQt5Gui.so.5
#22 0x00007f2f710653b7 in QXcbBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () at /lib64/libQt5XcbQpa.so.5
#23 0x00007f2f98a70049 in QWidgetBackingStore::qt_flush(QWidget*, QRegion const&, QBackingStore*, QWidget*, QPoint const&, QPlatformTextureList*, QWidgetBackingStore*) () at /lib64/libQt5Widgets.so.5
#24 0x00007f2f98a7176e in QWidgetBackingStore::flush(QWidget*) () at /lib64/libQt5Widgets.so.5
#25 0x00007f2f98a72e18 in QWidgetBackingStore::doSync() () at /lib64/libQt5Widgets.so.5
#26 0x00007f2f98a7302d in QWidgetBackingStore::sync() () at /lib64/libQt5Widgets.so.5
#27 0x00007f2f98a921af in QWidgetPrivate::syncBackingStore() () at /lib64/libQt5Widgets.so.5
#28 0x00007f2f98aa9ef8 in QWidget::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#29 0x00007f2f98ba3f2b in QMainWindow::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#30 0x00007f2f9b5f2a57 in KMainWindow::event(QEvent*) () at /lib64/libKF5XmlGui.so.5
#31 0x00007f2f9b637a65 in KXmlGuiWindow::event(QEvent*) () at /lib64/libKF5XmlGui.so.5
#32 0x00007f2f98a635dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#33 0x00007f2f98a6ac74 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#34 0x00007f2f98218627 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#35 0x00007f2f9821a85b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#36 0x00007f2f98266dd3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#37 0x00007f2f86337247 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#38 0x00007f2f863375e8 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#39 0x00007f2f8633767c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#40 0x00007f2f98266e4f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#41 0x00007f2f9821760a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#42 0x00007f2f9821f27c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#43 0x0000564a135648a1 in main ()

Reported using DrKonqi
Comment 1 Christoph Feck 2017-08-07 22:39:31 UTC 
Known problem with the nouveau driver not handling OpenGL from multiple threads.