Application: kontact (5.4.2)

Qt Version: 5.7.1
Frameworks Version: 5.30.0
Operating System: Linux 4.10.0-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:
For some time I've been having problems with Kmail while attempting to read folders that contain duplicate copies of a message.

I have filters that move incoming messages into dedicated folders by topic.  Because some of them come from mailing lists where people cross-post I get duplicates which I expect to be removed.  When I enter a folder with duplicates and I attempt to read the first in a string of duplicates many times Kmail will give the retrieving message display and never continue.   Even selecting another folder won't accomplish anything.

If I quit Kmail and then re-enter it crashes.

I've tried the usual recommendations about running fsck and or vacuum on akonadi, deleting it's directories and letting it rebuild.   My last attempt was to create a new account and start from scratch.  One day later it's crashing.

What more info can I provide?

The crash can be reproduced sometimes.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9f067f3900 (LWP 9156))]

Thread 38 (Thread 0x7f9dd1605700 (LWP 30219)):
#0  0x00007f9eff0d24b8 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f9ef6031052 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef603feb0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef60403e3 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9eff0cc454 in start_thread (arg=0x7f9dd1605700) at pthread_create.c:333
#6  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 37 (Thread 0x7f9d97bfe700 (LWP 30217)):
#0  0x00007f9f0322a66d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9efce97896 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f9d90001790, timeout=<optimized out>, context=0x7f9d90002810) at gmain.c:4228
#2  0x00007f9efce97896 in g_main_context_iterate (context=context@entry=0x7f9d90002810, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3924
#3  0x00007f9efce979ac in g_main_context_iteration (context=0x7f9d90002810, may_block=may_block@entry=1) at gmain.c:3990
#4  0x00007f9f03d6118b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f9d90002a50, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f9f03d0aaea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f9d97bfdcc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f9f03b38813 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f9f03b3d4c8 in QThreadPrivate::start(void*) (arg=0x5176090) at thread/qthread_unix.cpp:368
#8  0x00007f9eff0cc454 in start_thread (arg=0x7f9d97bfe700) at pthread_create.c:333
#9  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 36 (Thread 0x7f9d9e32a700 (LWP 27721)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9dd64da873 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f9dd6810c61 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9d9e32a700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 35 (Thread 0x7f9d9eb2b700 (LWP 27720)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9dd64da873 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f9dd6810c61 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9d9eb2b700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 34 (Thread 0x7f9d9f32c700 (LWP 27719)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9dd64da873 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f9dd6810c61 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9d9f32c700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 33 (Thread 0x7f9d9fb2d700 (LWP 27718)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9dd64da873 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f9dd6810c61 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9d9fb2d700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 32 (Thread 0x7f9d8effd700 (LWP 27717)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9dd64da873 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f9dd6810c61 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9d8effd700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 31 (Thread 0x7f9d62ffd700 (LWP 27716)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9dd64da873 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f9dd6810c61 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9d62ffd700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 30 (Thread 0x7f9d63fff700 (LWP 27715)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9dd64d9721 in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f9dd6810c61 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9d63fff700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 29 (Thread 0x7f9d8dffb700 (LWP 27714)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9dd67dff6b in  () at /usr/lib64/libQt5WebKit.so.5
#2  0x00007f9dd67dffa9 in  () at /usr/lib64/libQt5WebKit.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9d8dffb700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 28 (Thread 0x7f9d8cff9700 (LWP 10374)):
#0  0x00007f9efcedcf49 in g_mutex_lock (mutex=mutex@entry=0x7f9d80002ad0) at gthread-posix.c:1336
#1  0x00007f9efce96d89 in g_main_context_prepare (context=context@entry=0x7f9d80002ad0, priority=priority@entry=0x7f9d8cff8b80) at gmain.c:3504
#2  0x00007f9efce977bb in g_main_context_iterate (context=context@entry=0x7f9d80002ad0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3909
#3  0x00007f9efce979ac in g_main_context_iteration (context=0x7f9d80002ad0, may_block=may_block@entry=1) at gmain.c:3990
#4  0x00007f9f03d6118b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f9d80002da0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f9f03d0aaea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f9d8cff8cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f9f03b38813 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f9f03b3d4c8 in QThreadPrivate::start(void*) (arg=0x3d94730) at thread/qthread_unix.cpp:368
#8  0x00007f9eff0cc454 in start_thread (arg=0x7f9d8cff9700) at pthread_create.c:333
#9  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 27 (Thread 0x7f9d8d7fa700 (LWP 9452)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef603c609 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef603cc49 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef603ce00 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9eff0cc454 in start_thread (arg=0x7f9d8d7fa700) at pthread_create.c:333
#6  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 26 (Thread 0x7f9db6b67700 (LWP 9351)):
#0  0x00007f9efcedcf49 in g_mutex_lock (mutex=mutex@entry=0x7f9da8000ad0) at gthread-posix.c:1336
#1  0x00007f9efce96c57 in g_main_context_prepare (context=context@entry=0x7f9da8000ad0, priority=priority@entry=0x7f9db6b66b80) at gmain.c:3439
#2  0x00007f9efce977bb in g_main_context_iterate (context=context@entry=0x7f9da8000ad0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3909
#3  0x00007f9efce979ac in g_main_context_iteration (context=0x7f9da8000ad0, may_block=may_block@entry=1) at gmain.c:3990
#4  0x00007f9f03d6118b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f9da8000940, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f9f03d0aaea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f9db6b66cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f9f03b38813 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f9f03b3d4c8 in QThreadPrivate::start(void*) (arg=0x35a7760) at thread/qthread_unix.cpp:368
#8  0x00007f9eff0cc454 in start_thread (arg=0x7f9db6b67700) at pthread_create.c:333
#9  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 25 (Thread 0x7f9db7368700 (LWP 9241)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef603c609 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef603cc49 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef603ce00 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9eff0cc454 in start_thread (arg=0x7f9db7368700) at pthread_create.c:333
#6  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7f9dd0e04700 (LWP 9199)):
#0  0x00007f9efcedcf64 in g_mutex_unlock (mutex=0x7f9dc8000990) at gthread-posix.c:1348
#1  0x00007f9efce9788a in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f9dc8006bb0, timeout=<optimized out>, context=0x7f9dc8000990) at gmain.c:4227
#2  0x00007f9efce9788a in g_main_context_iterate (context=context@entry=0x7f9dc8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3924
#3  0x00007f9efce979ac in g_main_context_iteration (context=0x7f9dc8000990, may_block=may_block@entry=1) at gmain.c:3990
#4  0x00007f9f03d6118b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f9dc80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f9f03d0aaea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f9dd0e03cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f9f03b38813 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f9f03b3d4c8 in QThreadPrivate::start(void*) (arg=0x1f898e0) at thread/qthread_unix.cpp:368
#8  0x00007f9eff0cc454 in start_thread (arg=0x7f9dd0e04700) at pthread_create.c:333
#9  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7f9dd2495700 (LWP 9197)):
#0  0x00007f9efce97093 in g_main_context_query (context=context@entry=0x7f9dcc000990, max_priority=2147483647, timeout=timeout@entry=0x7f9dd2494b84, fds=fds@entry=0x7f9dcc002e70, n_fds=n_fds@entry=1) at gmain.c:3649
#1  0x00007f9efce97808 in g_main_context_iterate (context=context@entry=0x7f9dcc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3911
#2  0x00007f9efce979ac in g_main_context_iteration (context=0x7f9dcc000990, may_block=may_block@entry=1) at gmain.c:3990
#3  0x00007f9f03d6118b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f9dcc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f9f03d0aaea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f9dd2494cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f9f03b38813 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#6  0x00007f9f03b3d4c8 in QThreadPrivate::start(void*) (arg=0x1f7bd20) at thread/qthread_unix.cpp:368
#7  0x00007f9eff0cc454 in start_thread (arg=0x7f9dd2495700) at pthread_create.c:333
#8  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7f9e8cff9700 (LWP 9196)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef163d974 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f9ef163d9b9 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f9eff0cc454 in start_thread (arg=0x7f9e8cff9700) at pthread_create.c:333
#4  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7f9e8d7fa700 (LWP 9189)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef603c609 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef603cc49 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef603ce00 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9eff0cc454 in start_thread (arg=0x7f9e8d7fa700) at pthread_create.c:333
#6  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7f9e8dffb700 (LWP 9188)):
#0  0x00007f9eff0d4f1c in __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f9eff0cebb6 in __GI___pthread_mutex_lock (mutex=0x1bfb190) at ../nptl/pthread_mutex_lock.c:115
#2  0x00007f9edd6182fc in  () at /usr/lib64/libGLX_nvidia.so.0
#3  0x00007f9ed6edefb4 in  () at /usr/lib64/libnvidia-glcore.so.378.13
#4  0x00007f9ed6e18bff in  () at /usr/lib64/libnvidia-glcore.so.378.13
#5  0x00007f9ed6fd509d in  () at /usr/lib64/libnvidia-glcore.so.378.13
#6  0x00007f9edd61512c in  () at /usr/lib64/libGLX_nvidia.so.0
#7  0x00007f9eff0cc454 in start_thread (arg=0x7f9e8dffb700) at pthread_create.c:333
#8  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7f9e8e7fc700 (LWP 9187)):
#0  0x00007f9edf0b350c in pa_pstream_ref (a=0x7f9e70000960) at pulsecore/atomic.h:55
#1  0x00007f9edf0b350c in pa_pstream_ref (p=0x7f9e70000960) at pulsecore/pstream.c:1175
#2  0x00007f9edf0b3cb4 in do_pstream_read_write (p=0x7f9e70000960) at pulsecore/pstream.c:242
#3  0x00007f9edf0b4089 in srb_callback (srb=<optimized out>, userdata=0x7f9e70000960) at pulsecore/pstream.c:287
#4  0x00007f9edf0b490a in srbchannel_rwloop (sr=0x7f9e7000afd0) at pulsecore/srbchannel.c:190
#5  0x00007f9edf72643c in pa_mainloop_dispatch (m=0x1e38e60) at pulse/mainloop.c:655
#6  0x00007f9edf72643c in pa_mainloop_dispatch (m=m@entry=0x1e38e60) at pulse/mainloop.c:898
#7  0x00007f9edf72683c in pa_mainloop_iterate (m=0x1e38e60, block=<optimized out>, retval=0x0) at pulse/mainloop.c:929
#8  0x00007f9edf7268e0 in pa_mainloop_run (m=0x1e38e60, retval=retval@entry=0x0) at pulse/mainloop.c:944
#9  0x00007f9edf7348c9 in thread (userdata=0x1e20750) at pulse/thread-mainloop.c:100
#10 0x00007f9edf0c4258 in internal_thread_func (userdata=0x1e38fd0) at pulsecore/thread-posix.c:81
#11 0x00007f9eff0cc454 in start_thread (arg=0x7f9e8e7fc700) at pthread_create.c:333
#12 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7f9e8effd700 (LWP 9186)):
#0  0x00007f9f0322673d in write () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9f031bdd67 in _IO_new_file_write (f=0x7f9f034e4500 <_IO_2_1_stderr_>, data=0x7f9e8eff9f30, n=39) at fileops.c:1271
#2  0x00007f9f031bd0b2 in new_do_write (fp=fp@entry=0x7f9f034e4500 <_IO_2_1_stderr_>, data=data@entry=0x7f9e8eff9f30 "[warn] epoll_wait: Bad file descriptor\n", to_do=to_do@entry=39) at fileops.c:526
#3  0x00007f9f031be4be in _IO_new_file_xsputn (f=0x7f9f034e4500 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1350
#4  0x00007f9f03195215 in buffered_vfprintf (s=0x7f9f034e4500 <_IO_2_1_stderr_>, format=<optimized out>, args=<optimized out>) at vfprintf.c:2346
#5  0x00007f9f03192495 in _IO_vfprintf_internal (s=s@entry=0x7f9f034e4500 <_IO_2_1_stderr_>, format=0x7f9eef689be8 "[%s] %s\n", ap=ap@entry=0x7f9e8effc4d8) at vfprintf.c:1293
#6  0x00007f9f03241649 in ___fprintf_chk (fp=0x7f9f034e4500 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007f9eef671e1a in event_logv_ () at /usr/lib64/libevent-2.1.so.6
#8  0x00007f9eef671ff4 in event_warn () at /usr/lib64/libevent-2.1.so.6
#9  0x00007f9eef673948 in  () at /usr/lib64/libevent-2.1.so.6
#10 0x00007f9eef6696e9 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#11 0x00007f9ef5fea3be in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f9ef603d3ba in  () at /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007f9eff0cc454 in start_thread (arg=0x7f9e8effd700) at pthread_create.c:333
#17 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7f9e8f7fe700 (LWP 9185)):
#0  0x00007f9f0321ccf7 in sched_yield () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9edd61496b in  () at /usr/lib64/libGLX_nvidia.so.0
#2  0x00007f9ed6fd2869 in  () at /usr/lib64/libnvidia-glcore.so.378.13
#3  0x00007f9ed6daf764 in  () at /usr/lib64/libnvidia-glcore.so.378.13
#4  0x00007f9ef664e623 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9ef65d6f02 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9ef65e0d5d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef65fd239 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef58f5e55 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef58f41bc in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9ef58efe5e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9ef6064969 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9ef6010939 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9ef60114f9 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f9ef60119b2 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f9ef6013829 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007f9ef603d3ba in  () at /usr/lib64/libQt5WebEngineCore.so.5
#19 0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#20 0x00007f9eff0cc454 in start_thread (arg=0x7f9e8f7fe700) at pthread_create.c:333
#21 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7f9e8ffff700 (LWP 9184)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef5b09d70 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef5af2b90 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef5af2f1b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef5aeeb9a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9ef6d88ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9ef6d8b284 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef6d8b2d5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef6d8b3a9 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9ef603d3ba in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9eff0cc454 in start_thread (arg=0x7f9e8ffff700) at pthread_create.c:333
#14 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7f9eb0ff9700 (LWP 9183)):
#0  0x00007f9eff0d24b8 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f9ef6031052 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef60318f5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef60138b1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9ef603d3ba in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9eff0cc454 in start_thread (arg=0x7f9eb0ff9700) at pthread_create.c:333
#9  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7f9eb17fa700 (LWP 9182)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef562244d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef603ccde in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef603ce00 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9eff0cc454 in start_thread (arg=0x7f9eb17fa700) at pthread_create.c:333
#6  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f9eb1ffb700 (LWP 9181)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef6031865 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef6031925 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef6013873 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9ef603d3ba in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9eff0cc454 in start_thread (arg=0x7f9eb1ffb700) at pthread_create.c:333
#9  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f9eb27fc700 (LWP 9180)):
[KCrash Handler]
#6  0x0000000000000000 in  ()
#7  0x00007f9ef46742a1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef5155030 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef50f268d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9ef52bf1d0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9ef52bf288 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9ef52b7706 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9ef52b9e76 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f9ef52bc940 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f9ef52bcefd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007f9ef52be615 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007f9ef5239089 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007f9ef5c975ee in  () at /usr/lib64/libQt5WebEngineCore.so.5
#19 0x00007f9ef5c8f4b8 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#20 0x00007f9ef5c8f581 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#21 0x00007f9ef5c9052d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#22 0x00007f9ef5c908e4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#23 0x00007f9ef5c90a9a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#24 0x00007f9ef5c90be1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#25 0x00007f9ef5c90f64 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#26 0x00007f9ef5c8e262 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#27 0x00007f9ef5feae2e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#28 0x00007f9ef5feaf96 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#29 0x00007f9eef668d7a in  () at /usr/lib64/libevent-2.1.so.6
#30 0x00007f9eef6698f7 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#31 0x00007f9ef5fea505 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#32 0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#33 0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#34 0x00007f9ef5249898 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#35 0x00007f9ef52499db in  () at /usr/lib64/libQt5WebEngineCore.so.5
#36 0x00007f9ef603d438 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#37 0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#38 0x00007f9eff0cc454 in start_thread (arg=0x7f9eb27fc700) at pthread_create.c:333
#39 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f9eb2ffd700 (LWP 9179)):
#0  0x00007f9f0323fb3b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f9f032415f4 in ___fprintf_chk (fp=0x7f9f034e5730 <_IO_stdfile_2_lock>, flag=1, format=0x7f9eef689be8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f9eef671e1a in event_logv_ () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f9eef671ff4 in event_warn () at /usr/lib64/libevent-2.1.so.6
#4  0x00007f9eef673948 in  () at /usr/lib64/libevent-2.1.so.6
#5  0x00007f9eef6696e9 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#6  0x00007f9ef5fea3be in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef52497e8 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9ef5249a3b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9ef603d438 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9eff0cc454 in start_thread (arg=0x7f9eb2ffd700) at pthread_create.c:333
#14 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f9eb37fe700 (LWP 9178)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef6031865 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef6031925 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef6013873 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9ef5249738 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef5249a2b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef603d438 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9eff0cc454 in start_thread (arg=0x7f9eb37fe700) at pthread_create.c:333
#11 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f9eb3fff700 (LWP 9177)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef6031865 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef6031925 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef6013873 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9ef5249688 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef5249a1b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef603d438 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9eff0cc454 in start_thread (arg=0x7f9eb3fff700) at pthread_create.c:333
#11 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f9eccff9700 (LWP 9176)):
#0  0x00007f9f0323fb3b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f9f032415f4 in ___fprintf_chk (fp=0x7f9f034e5730 <_IO_stdfile_2_lock>, flag=1, format=0x7f9eef689be8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f9eef671e1a in event_logv_ () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f9eef671ff4 in event_warn () at /usr/lib64/libevent-2.1.so.6
#4  0x00007f9eef673948 in  () at /usr/lib64/libevent-2.1.so.6
#5  0x00007f9eef6696e9 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#6  0x00007f9ef5fea452 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef52495d8 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9ef5249a0b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9ef603d438 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9eff0cc454 in start_thread (arg=0x7f9eccff9700) at pthread_create.c:333
#14 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f9ecd7fa700 (LWP 9175)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef6031865 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef6031925 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef6013873 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9ef5249528 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef52499fb in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef603d438 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9eff0cc454 in start_thread (arg=0x7f9ecd7fa700) at pthread_create.c:333
#11 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f9eceffd700 (LWP 9172)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9ef6031865 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9ef6031925 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9ef6013873 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9ef603d3ba in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9eff0cc454 in start_thread (arg=0x7f9eceffd700) at pthread_create.c:333
#9  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f9ecf7fe700 (LWP 9171)):
#0  0x00007f9f0323fb3b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f9f032415f4 in ___fprintf_chk (fp=0x7f9f034e5730 <_IO_stdfile_2_lock>, flag=1, format=0x7f9eef689be8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f9eef671e1a in event_logv_ () at /usr/lib64/libevent-2.1.so.6
#3  0x00007f9eef671ff4 in event_warn () at /usr/lib64/libevent-2.1.so.6
#4  0x00007f9eef673948 in  () at /usr/lib64/libevent-2.1.so.6
#5  0x00007f9eef6696e9 in event_base_loop () at /usr/lib64/libevent-2.1.so.6
#6  0x00007f9ef5fea3be in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9ef60252da in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9ef600fd45 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9ef603d3ba in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9ef603999c in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9eff0cc454 in start_thread (arg=0x7f9ecf7fe700) at pthread_create.c:333
#12 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f9edd35d700 (LWP 9162)):
#0  0x00007f9eff0d210f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9efeba4657 in _xcb_conn_wait (c=c@entry=0x18136f0, cond=cond@entry=0x7f9edd35c950, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:447
#2  0x00007f9efeba5e9f in wait_for_reply (c=c@entry=0x18136f0, request=request@entry=56894, e=e@entry=0x7f9edd35ca20) at xcb_in.c:516
#3  0x00007f9efeba6011 in xcb_wait_for_reply64 (c=c@entry=0x18136f0, request=56894, e=e@entry=0x7f9edd35ca20) at xcb_in.c:560
#4  0x00007f9f004626a8 in _XReply (dpy=0x1812360, rep=0x7f9edd35ca80, extra=0, discard=0) at xcb_io.c:596
#5  0x00007f9edd5e9eb8 in  () at /usr/lib64/libGLX_nvidia.so.0
#6  0x00007f9edd5ec209 in  () at /usr/lib64/libGLX_nvidia.so.0
#7  0x00007f9edd5bbbea in  () at /usr/lib64/libGLX_nvidia.so.0
#8  0x00007f9ed6fd515e in  () at /usr/lib64/libnvidia-glcore.so.378.13
#9  0x00007f9edd61512c in  () at /usr/lib64/libGLX_nvidia.so.0
#10 0x00007f9eff0cc454 in start_thread (arg=0x7f9edd35d700) at pthread_create.c:333
#11 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f9ede0a3700 (LWP 9159)):
#0  0x00007f9f0322a66d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9efce97896 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f9ed8022e60, timeout=<optimized out>, context=0x7f9ed8000990) at gmain.c:4228
#2  0x00007f9efce97896 in g_main_context_iterate (context=context@entry=0x7f9ed8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3924
#3  0x00007f9efce979ac in g_main_context_iteration (context=0x7f9ed8000990, may_block=may_block@entry=1) at gmain.c:3990
#4  0x00007f9f03d6118b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f9ed80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f9f03d0aaea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f9ede0a2c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f9f03b38813 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:507
#7  0x00007f9f02438385 in  () at /usr/lib64/libQt5DBus.so.5
#8  0x00007f9f03b3d4c8 in QThreadPrivate::start(void*) (arg=0x7f9f026a9d20) at thread/qthread_unix.cpp:368
#9  0x00007f9eff0cc454 in start_thread (arg=0x7f9ede0a3700) at pthread_create.c:333
#10 0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f9ee5f0e700 (LWP 9158)):
#0  0x00007f9f0322a66d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9efeba43e0 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7f9ee5f0dbc0) at /usr/include/bits/poll2.h:46
#2  0x00007f9efeba43e0 in _xcb_conn_wait (c=c@entry=0x18136f0, cond=cond@entry=0x1813730, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:479
#3  0x00007f9efeba6179 in xcb_wait_for_event (c=0x18136f0) at xcb_in.c:693
#4  0x00007f9ee8227889 in QXcbEventReader::run() (this=0x181faa0) at qxcbconnection.cpp:1343
#5  0x00007f9f03b3d4c8 in QThreadPrivate::start(void*) (arg=0x181faa0) at thread/qthread_unix.cpp:368
#6  0x00007f9eff0cc454 in start_thread (arg=0x7f9ee5f0e700) at pthread_create.c:333
#7  0x00007f9f0323337f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f9f067f3900 (LWP 9156)):
#0  0x00007f9f0321ccf7 in sched_yield () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9edd61496b in  () at /usr/lib64/libGLX_nvidia.so.0
#2  0x00007f9ed6fd2869 in  () at /usr/lib64/libnvidia-glcore.so.378.13
#3  0x00007f9edd5ebca2 in  () at /usr/lib64/libGLX_nvidia.so.0
#4  0x00007f9ef22f6cd7 in  () at /usr/lib64/libGLX.so.0
#5  0x00007f9ee5508cc0 in QGLXContext::makeCurrent(QPlatformSurface*) (this=0x44c0ea0, surface=0x219abe0) at qglxintegration.cpp:488
#6  0x00007f9f04295588 in QOpenGLContext::makeCurrent(QSurface*) (this=this@entry=0x1efa4d0, surface=surface@entry=0x3fb4780) at kernel/qopenglcontext.cpp:974
#7  0x00007f9f0451ac78 in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) (this=this@entry=0x21853f0, window=window@entry=0x3fb4770, region=..., offset=..., textures=textures@entry=0x3ed2150, context=context@entry=0x1efa4d0, translucentBackground=false) at painting/qplatformbackingstore.cpp:315
#8  0x00007f9ee82477e7 in QXcbBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) (this=this@entry=0x21853f0, window=0x3fb4770, region=..., offset=..., textures=textures@entry=0x3ed2150, context=context@entry=0x1efa4d0, translucentBackground=false) at qxcbbackingstore.cpp:620
#9  0x00007f9f04a07d9d in QWidgetBackingStore::qt_flush(QWidget*, QRegion const&, QBackingStore*, QWidget*, QPoint const&, QPlatformTextureList*, QWidgetBackingStore*) (widget=0x225bfb0, region=..., backingStore=<optimized out>, tlw=<optimized out>, tlwOffset=..., widgetTextures=<optimized out>, widgetBackingStore=<optimized out>) at kernel/qwidgetbackingstore.cpp:140
#10 0x00007f9f04a093ce in QWidgetBackingStore::flush(QWidget*) (this=this@entry=0x1da26c0, widget=widget@entry=0x0) at kernel/qwidgetbackingstore.cpp:1419
#11 0x00007f9f04a0b2b4 in QWidgetBackingStore::doSync() (beginPaintInfo=<synthetic pointer>, backingStore=<optimized out>, cleaned=..., this=0x1da26c0) at kernel/qwidgetbackingstore.cpp:361
#12 0x00007f9f04a0b2b4 in QWidgetBackingStore::doSync() (this=this@entry=0x1da26c0) at kernel/qwidgetbackingstore.cpp:1403
#13 0x00007f9f04a0b9e5 in QWidgetBackingStore::sync(QWidget*, QRegion const&) (this=0x1da26c0, exposedWidget=0x225bfb0, exposedRegion=...) at kernel/qwidgetbackingstore.cpp:1152
#14 0x00007f9f04a2a34f in QWidgetPrivate::syncBackingStore(QRegion const&) (this=this@entry=0x22bc6b0, region=...) at kernel/qwidget.cpp:1971
#15 0x00007f9f04a5ec0c in QWidgetWindow::handleExposeEvent(QExposeEvent*) (this=this@entry=0x3fb4770, event=event@entry=0x7ffcd7df1f80) at kernel/qwidgetwindow.cpp:921
#16 0x00007f9f04a5f643 in QWidgetWindow::event(QEvent*) (this=0x3fb4770, event=0x7ffcd7df1f80) at kernel/qwidgetwindow.cpp:284
#17 0x00007f9f049faeac in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=<optimized out>, receiver=0x3fb4770, e=0x7ffcd7df1f80) at kernel/qapplication.cpp:3799
#18 0x00007f9f04a02661 in QApplication::notify(QObject*, QEvent*) (this=0x7ffcd7df2500, receiver=0x3fb4770, e=0x7ffcd7df1f80) at kernel/qapplication.cpp:3556
#19 0x00007f9f03d0cb00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=receiver@entry=0x3fb4770, event=event@entry=0x7ffcd7df1f80) at kernel/qcoreapplication.cpp:988
#20 0x00007f9f0425ac2d in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (event=0x7ffcd7df1f80, receiver=0x3fb4770) at ../../src/corelib/kernel/qcoreapplication.h:234
#21 0x00007f9f0425ac2d in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (e=0x3665670) at kernel/qguiapplication.cpp:2791
#22 0x00007f9f0425b83d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x3665670) at kernel/qguiapplication.cpp:1749
#23 0x00007f9f0423975b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=...) at kernel/qwindowsysteminterface.cpp:659
#24 0x00007f9ee825e210 in userEventSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:76
#25 0x00007f9efce97697 in g_main_context_dispatch (context=0x7f9ee00016f0) at gmain.c:3203
#26 0x00007f9efce97697 in g_main_context_dispatch (context=context@entry=0x7f9ee00016f0) at gmain.c:3856
#27 0x00007f9efce97900 in g_main_context_iterate (context=context@entry=0x7f9ee00016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3929
#28 0x00007f9efce979ac in g_main_context_iteration (context=0x7f9ee00016f0, may_block=may_block@entry=1) at gmain.c:3990
#29 0x00007f9f03d6116f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x186b270, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#30 0x00007f9f03d0aaea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffcd7df2260, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#31 0x00007f9f03d1325c in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1261
#32 0x0000000000404717 in  ()
#33 0x00007f9f0316a291 in __libc_start_main (main=0x403750, argc=1, argv=0x7ffcd7df2658, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcd7df2648) at ../csu/libc-start.c:289
#34 0x0000000000404c3a in _start ()

Reported using DrKonqi