Application: kontact (5.3.3 (QtWebEngine))

Qt Version: 5.7.1
Frameworks Version: 5.27.0
Operating System: Linux 4.8.14-300.fc25.x86_64 x86_64
Distribution: "Fedora release 25 (Twenty Five)"

-- Information about the crash:
Kontact crashes nearly always when browsing feeds

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
84	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f21611b7940 (LWP 6579))]

Thread 40 (Thread 0x7f2019fa1700 (LWP 7131)):
#0  0x00007f216c28e7f9 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f216c248d06 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#2  0x00007f216c2491c0 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f2170ccd6ca in start_thread (arg=0x7f2019fa1700) at pthread_create.c:333
#9  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 39 (Thread 0x7f201a7a2700 (LWP 7129)):
#0  0x00007ffdf5680b12 in clock_gettime ()
#1  0x00007f2178e92686 in __GI___clock_gettime (clock_id=1, tp=0x7f201a7a19d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2179b27af1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f2179c7cde9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f2179c7d1e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f2179c7e3dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f2179c7e4a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f216c248699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f216c24907b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f2170ccd6ca in start_thread (arg=0x7f201a7a2700) at pthread_create.c:333
#15 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 38 (Thread 0x7f201afa3700 (LWP 7118)):
#0  0x00007ffdf5680b12 in clock_gettime ()
#1  0x00007f2178e92686 in __GI___clock_gettime (clock_id=1, tp=0x7f201afa29d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2179b27af1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f2179c7cde9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f2179c7d1e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f2179c7e3dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f2179c7e4a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f216c248699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f216c24907b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f2170ccd6ca in start_thread (arg=0x7f201afa3700) at pthread_create.c:333
#15 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 37 (Thread 0x7f201b7a4700 (LWP 7116)):
#0  0x00007ffdf5680b12 in clock_gettime ()
#1  0x00007f2178e92686 in __GI___clock_gettime (clock_id=1, tp=0x7f201b7a39d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2179b27af1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f2179c7cde9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f2179c7d1e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f2179c7e3dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f2179c7e4a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f216c248699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f216c24907b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f2170ccd6ca in start_thread (arg=0x7f201b7a4700) at pthread_create.c:333
#15 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 36 (Thread 0x7f2011248700 (LWP 7114)):
#0  0x00007ffdf5680b12 in clock_gettime ()
#1  0x00007f2178e92686 in __GI___clock_gettime (clock_id=1, tp=0x7f20112479d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2179b27af1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f2179c7cde9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f2179c7d1e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f2179c7e3dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f2179c7e4a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f216c248699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f216c24907b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f2170ccd6ca in start_thread (arg=0x7f2011248700) at pthread_create.c:333
#15 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 35 (Thread 0x7f2011c56700 (LWP 7112)):
#0  0x00007f216c28e814 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007f216c248b25 in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007f216c2490f4 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f2170ccd6ca in start_thread (arg=0x7f2011c56700) at pthread_create.c:333
#9  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 34 (Thread 0x7f200f878700 (LWP 7110)):
#0  0x00007f216c249276 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#1  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#2  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#3  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#4  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f2170ccd6ca in start_thread (arg=0x7f200f878700) at pthread_create.c:333
#6  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 33 (Thread 0x7f201307e700 (LWP 7108)):
#0  0x00007f2178e7800d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f216c249156 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f2170ccd6ca in start_thread (arg=0x7f201307e700) at pthread_create.c:333
#8  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 32 (Thread 0x7f202d104700 (LWP 6691)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21751f5c49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751f6289 in base::SequencedWorkerPool::Worker::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751f6440 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2170ccd6ca in start_thread (arg=0x7f202d104700) at pthread_create.c:333
#6  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 31 (Thread 0x7f202f3ee700 (LWP 6630)):
#0  0x00007f2178e7800d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f216c249156 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f2170ccd6ca in start_thread (arg=0x7f202f3ee700) at pthread_create.c:333
#8  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 30 (Thread 0x7f202fbef700 (LWP 6628)):
#0  0x00007f216c248c08 in g_main_context_check () from /lib64/libglib-2.0.so.0
#1  0x00007f216c2490f4 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f2170ccd6ca in start_thread (arg=0x7f202fbef700) at pthread_create.c:333
#8  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 29 (Thread 0x7f2042795700 (LWP 6622)):
#0  0x00007f216c248ba1 in g_main_context_check () from /lib64/libglib-2.0.so.0
#1  0x00007f216c2490f4 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f2170ccd6ca in start_thread (arg=0x7f2042795700) at pthread_create.c:333
#8  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 28 (Thread 0x7f2042f96700 (LWP 6620)):
#0  0x00007f2179c7e741 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#1  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#2  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#3  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#4  0x00007f2170ccd6ca in start_thread (arg=0x7f2042f96700) at pthread_create.c:333
#5  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 27 (Thread 0x7f2043bd5700 (LWP 6618)):
#0  0x00007f2178e7800d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f216c249156 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f2170ccd6ca in start_thread (arg=0x7f2043bd5700) at pthread_create.c:333
#8  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 26 (Thread 0x7f2051376700 (LWP 6616)):
#0  0x00007f2178e7800d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f216c249156 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f2170ccd6ca in start_thread (arg=0x7f2051376700) at pthread_create.c:333
#8  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 25 (Thread 0x7f2051b77700 (LWP 6614)):
#0  0x00007ffdf5680b12 in clock_gettime ()
#1  0x00007f2178e92686 in __GI___clock_gettime (clock_id=1, tp=0x7f2051b769d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2179b27af1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f2179c7cde9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f2179c7d1e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f2179c7e3dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f2179c7e4a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f216c248699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f216c24907b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f2170ccd6ca in start_thread (arg=0x7f2051b77700) at pthread_create.c:333
#15 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7f2052378700 (LWP 6612)):
#0  0x00007f216c24868c in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#1  0x00007f216c24907b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f2170ccd6ca in start_thread (arg=0x7f2052378700) at pthread_create.c:333
#8  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7f2052b79700 (LWP 6611)):
#0  0x00007ffdf5680b12 in clock_gettime ()
#1  0x00007f2178e92686 in __GI___clock_gettime (clock_id=1, tp=0x7f2052b789d0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f2179b27af1 in qt_gettime() () from /lib64/libQt5Core.so.5
#3  0x00007f2179c7cde9 in QTimerInfoList::updateCurrentTime() () from /lib64/libQt5Core.so.5
#4  0x00007f2179c7d1e5 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#5  0x00007f2179c7e3dc in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#6  0x00007f2179c7e4a5 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#7  0x00007f216c248699 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#8  0x00007f216c24907b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#9  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#10 0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#11 0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#12 0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#13 0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#14 0x00007f2170ccd6ca in start_thread (arg=0x7f2052b79700) at pthread_create.c:333
#15 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7f2104ff9700 (LWP 6610)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f216308f2f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQt5Script.so.5
#2  0x00007f216308f339 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQt5Script.so.5
#3  0x00007f2170ccd6ca in start_thread (arg=0x7f2104ff9700) at pthread_create.c:333
#4  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7f21057fa700 (LWP 6605)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21751f5c49 in base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751f6289 in base::SequencedWorkerPool::Worker::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751f6440 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2170ccd6ca in start_thread (arg=0x7f21057fa700) at pthread_create.c:333
#6  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7f2105ffb700 (LWP 6604)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f2178e93ac4 in ___fprintf_chk (fp=0x7f217913e730 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f216a84cc74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f216a83486e in fprintf (__fmt=0x7f216a84cc74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f2105ffa550 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#4  _warn_helper (severity=severity@entry=2, errstr=0x7f2178f05c0e "Bad file descriptor", fmt=fmt@entry=0x7f216a84d45a "epoll_wait", ap=ap@entry=0x7f2105ffa980) at log.c:187
#5  0x00007f216a834a64 in event_warn (fmt=fmt@entry=0x7f216a84d45a "epoll_wait") at log.c:101
#6  0x00007f216a8391e8 in epoll_dispatch (base=0x7f20ec0019e0, tv=<optimized out>) at epoll.c:413
#7  0x00007f216a82318a in event_base_loop (base=0x7f20ec0019e0, flags=1) at event.c:1625
#8  0x00007f21751a3a12 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f21751f69fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f2170ccd6ca in start_thread (arg=0x7f2105ffb700) at pthread_create.c:333
#14 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7f21067fc700 (LWP 6603)):
[KCrash Handler]
#6  0x00007f214d47c22f in pushbuf_kref () from /lib64/libdrm_nouveau.so.2
#7  0x00007f214d47c8b9 in pushbuf_validate () from /lib64/libdrm_nouveau.so.2
#8  0x00007f214e0b1dc3 in nv50_blit () from /usr/lib64/dri/nouveau_dri.so
#9  0x00007f214dcc67f7 in st_TexSubImage () from /usr/lib64/dri/nouveau_dri.so
#10 0x00007f214dc4b5db in _mesa_texture_sub_image () from /usr/lib64/dri/nouveau_dri.so
#11 0x00007f214dc4b846 in texsubimage () from /usr/lib64/dri/nouveau_dri.so
#12 0x00007f214dc4bc68 in _mesa_TexSubImage2D () from /usr/lib64/dri/nouveau_dri.so
#13 0x00007f21757f4123 in gpu::gles2::TextureManager::ValidateAndDoTexSubImage(gpu::gles2::GLES2Decoder*, gpu::gles2::DecoderTextureState*, gpu::gles2::ContextState*, gpu::gles2::DecoderFramebufferState*, char const*, gpu::gles2::TextureManager::DoTexSubImageArguments const&) () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007f2175784f35 in gpu::gles2::GLES2DecoderImpl::HandleTexSubImage2D(unsigned int, void const*) () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f21757af7c2 in gpu::error::Error gpu::gles2::GLES2DecoderImpl::DoCommandsImpl<false>(unsigned int, void const*, int, int*) () from /lib64/libQt5WebEngineCore.so.5
#16 0x00007f21757fe37a in gpu::CommandParser::ProcessCommands(int) () from /lib64/libQt5WebEngineCore.so.5
#17 0x00007f21757c356a in gpu::GpuScheduler::PutChanged() () from /lib64/libQt5WebEngineCore.so.5
#18 0x00007f2174b7f490 in content::GpuCommandBufferStub::OnAsyncFlush(int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > const&) () from /lib64/libQt5WebEngineCore.so.5
#19 0x00007f2174b82ad1 in content::GpuCommandBufferStub::OnMessageReceived(IPC::Message const&) () from /lib64/libQt5WebEngineCore.so.5
#20 0x00007f2174b7e20e in content::GpuChannel::HandleMessage() [clone .part.322] () from /lib64/libQt5WebEngineCore.so.5
#21 0x00007f217521dfa9 in base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask const&) () from /lib64/libQt5WebEngineCore.so.5
#22 0x00007f21751c9ed9 in base::MessageLoop::RunTask(base::PendingTask const&) () from /lib64/libQt5WebEngineCore.so.5
#23 0x00007f21751caa99 in base::MessageLoop::DeferOrRunPendingTask(base::PendingTask const&) () from /lib64/libQt5WebEngineCore.so.5
#24 0x00007f21751caf52 in base::MessageLoop::DoWork() () from /lib64/libQt5WebEngineCore.so.5
#25 0x00007f21751ccdc9 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#26 0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#27 0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#28 0x00007f21751f69fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#29 0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#30 0x00007f2170ccd6ca in start_thread (arg=0x7f21067fc700) at pthread_create.c:333
#31 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7f21077fe700 (LWP 6602)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2174d971c0 in mojo::system::Waiter::Wait(unsigned long, unsigned long*) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f2174d7fff0 in mojo::system::Core::WaitManyInternal(unsigned int const*, unsigned int const*, unsigned int, unsigned long, unsigned int*, mojo::system::HandleSignalsState*) () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f2174d8037b in mojo::system::Core::Wait(unsigned int, unsigned int, unsigned long, mojo::system::UserPointer<MojoHandleSignalsState>) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f2174d7c00a in MojoWait () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2175ef582e in mojo::common::MessagePumpMojo::WaitForReadyHandles(mojo::common::MessagePumpMojo::RunState const&) const () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f2175ef7be4 in mojo::common::MessagePumpMojo::DoInternalWork(mojo::common::MessagePumpMojo::RunState const&, bool) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f2175ef7c35 in mojo::common::MessagePumpMojo::DoRunLoop(mojo::common::MessagePumpMojo::RunState*, base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2175ef7d09 in mojo::common::MessagePumpMojo::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f21751f69fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f2170ccd6ca in start_thread (arg=0x7f21077fe700) at pthread_create.c:333
#14 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7f2106ffd700 (LWP 6601)):
#0  0x00007f2178e7800d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f21544b7f51 in poll (__timeout=-1, __nfds=3, __fds=0x7f20e8006c50) at /usr/include/bits/poll2.h:46
#2  poll_func (ufds=0x7f20e8006c50, nfds=3, timeout=-1, userdata=0x557ddb1f3cf0) at pulse/thread-mainloop.c:69
#3  0x00007f21544a9721 in pa_mainloop_poll (m=m@entry=0x557ddb1f6130) at pulse/mainloop.c:844
#4  0x00007f21544a9dbe in pa_mainloop_iterate (m=0x557ddb1f6130, block=<optimized out>, retval=0x0) at pulse/mainloop.c:926
#5  0x00007f21544a9e70 in pa_mainloop_run (m=0x557ddb1f6130, retval=retval@entry=0x0) at pulse/mainloop.c:944
#6  0x00007f21544b7e99 in thread (userdata=0x557ddb1f9770) at pulse/thread-mainloop.c:100
#7  0x00007f214fdd2178 in internal_thread_func (userdata=0x557ddb1f1610) at pulsecore/thread-posix.c:81
#8  0x00007f2170ccd6ca in start_thread (arg=0x7f2106ffd700) at pthread_create.c:333
#9  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7f2107fff700 (LWP 6600)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f21751ea912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751eb1b5 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751cce51 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f21751f69fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2170ccd6ca in start_thread (arg=0x7f2107fff700) at pthread_create.c:333
#9  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7f2128ff9700 (LWP 6599)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21748b0a0d in cc::SingleThreadTaskGraphRunner::Run() () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751f631e in base::DelegateSimpleThread::Run() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751f6440 in base::SimpleThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2170ccd6ca in start_thread (arg=0x7f2128ff9700) at pthread_create.c:333
#6  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7f21297fa700 (LWP 6598)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21751eb125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751eb1e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751cce13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f21751f69fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2170ccd6ca in start_thread (arg=0x7f21297fa700) at pthread_create.c:333
#9  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f2129ffb700 (LWP 6597)):
#0  0x00007f2178e84563 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f216a8390c8 in epoll_dispatch (base=0x7f2110001950, tv=<optimized out>) at epoll.c:407
#2  0x00007f216a82318a in event_base_loop (base=0x7f2110001950, flags=1) at event.c:1625
#3  0x00007f21751a3ac5 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f21744d7fa8 in content::BrowserThreadImpl::IOThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f21744d80eb in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f21751f6a78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2170ccd6ca in start_thread (arg=0x7f2129ffb700) at pthread_create.c:333
#11 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f212a7fc700 (LWP 6596)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f2178e93ac4 in ___fprintf_chk (fp=0x7f217913e730 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f216a84cc74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f216a83486e in fprintf (__fmt=0x7f216a84cc74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f212a7fb1c0 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#4  _warn_helper (severity=severity@entry=2, errstr=0x7f2178f05c0e "Bad file descriptor", fmt=fmt@entry=0x7f216a84d45a "epoll_wait", ap=ap@entry=0x7f212a7fb5f0) at log.c:187
#5  0x00007f216a834a64 in event_warn (fmt=fmt@entry=0x7f216a84d45a "epoll_wait") at log.c:101
#6  0x00007f216a8391e8 in epoll_dispatch (base=0x7f211c0019e0, tv=<optimized out>) at epoll.c:413
#7  0x00007f216a82318a in event_base_loop (base=0x7f211c0019e0, flags=1) at event.c:1625
#8  0x00007f21751a3ac5 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f21744d7ef8 in content::BrowserThreadImpl::CacheThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f21744d814b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f21751f6a78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f2170ccd6ca in start_thread (arg=0x7f212a7fc700) at pthread_create.c:333
#16 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f212affd700 (LWP 6595)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21751eb125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751eb1e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751cce13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f21744d7e48 in content::BrowserThreadImpl::ProcessLauncherThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f21744d813b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f21751f6a78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2170ccd6ca in start_thread (arg=0x7f212affd700) at pthread_create.c:333
#11 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f212b7fe700 (LWP 6594)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21751eb125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751eb1e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751cce13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f21744d7d98 in content::BrowserThreadImpl::FileUserBlockingThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f21744d812b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f21751f6a78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2170ccd6ca in start_thread (arg=0x7f212b7fe700) at pthread_create.c:333
#11 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f212bfff700 (LWP 6593)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f2178e93ac4 in ___fprintf_chk (fp=0x7f217913e730 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f216a84cc74 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f216a83486e in fprintf (__fmt=0x7f216a84cc74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f212bffe1c0 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#4  _warn_helper (severity=severity@entry=2, errstr=0x7f2178f05c0e "Bad file descriptor", fmt=fmt@entry=0x7f216a84d45a "epoll_wait", ap=ap@entry=0x7f212bffe5f0) at log.c:187
#5  0x00007f216a834a64 in event_warn (fmt=fmt@entry=0x7f216a84d45a "epoll_wait") at log.c:101
#6  0x00007f216a8391e8 in epoll_dispatch (base=0x7f21180019e0, tv=<optimized out>) at epoll.c:413
#7  0x00007f216a82318a in event_base_loop (base=0x7f21180019e0, flags=1) at event.c:1625
#8  0x00007f21751a3a12 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f21744d7ce8 in content::BrowserThreadImpl::FileThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f21744d811b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f21751f6a78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#15 0x00007f2170ccd6ca in start_thread (arg=0x7f212bfff700) at pthread_create.c:333
#16 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f2140ff9700 (LWP 6592)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21751eb125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751eb1e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751cce13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f21744d7c38 in content::BrowserThreadImpl::DBThreadRun(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f21744d810b in content::BrowserThreadImpl::Run(base::MessageLoop*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f21751f6a78 in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#9  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f2170ccd6ca in start_thread (arg=0x7f2140ff9700) at pthread_create.c:333
#11 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f21417fa700 (LWP 6591)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f21751ea912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751f94f0 in base::PosixDynamicThreadPool::WaitForTask() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751f9a23 in base::(anonymous namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2170ccd6ca in start_thread (arg=0x7f21417fa700) at pthread_create.c:333
#6  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f2141ffb700 (LWP 6590)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f21751ea912 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751f94f0 in base::PosixDynamicThreadPool::WaitForTask() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751f9a23 in base::(anonymous namespace)::WorkerThread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f2170ccd6ca in start_thread (arg=0x7f2141ffb700) at pthread_create.c:333
#6  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f21427fc700 (LWP 6589)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f21751eb125 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () from /lib64/libQt5WebEngineCore.so.5
#2  0x00007f21751eb1e5 in base::WaitableEvent::Wait() () from /lib64/libQt5WebEngineCore.so.5
#3  0x00007f21751cce13 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#4  0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#5  0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#6  0x00007f21751f69fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#7  0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#8  0x00007f2170ccd6ca in start_thread (arg=0x7f21427fc700) at pthread_create.c:333
#9  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f2142ffd700 (LWP 6588)):
#0  __lll_unlock_wake_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:341
#1  0x00007f2178e93b6b in _IO_acquire_lock_clear_flags2_fct (p=<synthetic pointer>) at ../libio/libioP.h:873
#2  ___fprintf_chk (fp=0x7f217913d500 <_IO_2_1_stderr_>, flag=flag@entry=1, format=format@entry=0x7f216a84cc74 "[%s] %s\n") at fprintf_chk.c:30
#3  0x00007f216a83486e in fprintf (__fmt=0x7f216a84cc74 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#4  event_log (msg=0x7f2142ffc550 "epoll_wait: Bad file descriptor", severity=2) at log.c:222
#5  _warn_helper (severity=severity@entry=2, errstr=0x7f2178f05c0e "Bad file descriptor", fmt=fmt@entry=0x7f216a84d45a "epoll_wait", ap=ap@entry=0x7f2142ffc980) at log.c:187
#6  0x00007f216a834a64 in event_warn (fmt=fmt@entry=0x7f216a84d45a "epoll_wait") at log.c:101
#7  0x00007f216a8391e8 in epoll_dispatch (base=0x7f21380019e0, tv=<optimized out>) at epoll.c:413
#8  0x00007f216a82318a in event_base_loop (base=0x7f21380019e0, flags=1) at event.c:1625
#9  0x00007f21751a3a12 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () from /lib64/libQt5WebEngineCore.so.5
#10 0x00007f21751de84a in base::RunLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#11 0x00007f21751c92e5 in base::MessageLoop::Run() () from /lib64/libQt5WebEngineCore.so.5
#12 0x00007f21751f69fa in base::Thread::ThreadMain() () from /lib64/libQt5WebEngineCore.so.5
#13 0x00007f21751f2fdc in base::(anonymous namespace)::ThreadFunc(void*) () from /lib64/libQt5WebEngineCore.so.5
#14 0x00007f2170ccd6ca in start_thread (arg=0x7f2142ffd700) at pthread_create.c:333
#15 0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f2149eb2700 (LWP 6581)):
#0  0x00007f216c2486c3 in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#1  0x00007f216c24907b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f2179c7e73b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f2179a8c5f3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f217ea9d739 in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#7  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f2170ccd6ca in start_thread (arg=0x7f2149eb2700) at pthread_create.c:333
#9  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f21564c0700 (LWP 6580)):
#0  0x00007f2178e7800d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f216f739d10 in poll (__timeout=-1, __nfds=1, __fds=0x7f21564bfb80) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x557ddafbc4c0, cond=cond@entry=0x557ddafbc500, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:479
#3  0x00007f216f73baa9 in xcb_wait_for_event (c=0x557ddafbc4c0) at xcb_in.c:693
#4  0x00007f215a530d69 in QXcbEventReader::run() () from /lib64/libQt5XcbQpa.so.5
#5  0x00007f2179a909da in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#6  0x00007f2170ccd6ca in start_thread (arg=0x7f21564c0700) at pthread_create.c:333
#7  0x00007f2178e83f6f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f21611b7940 (LWP 6579)):
[KCrash Handler]
#6  0x00007f214d47c22f in pushbuf_kref () from /lib64/libdrm_nouveau.so.2
#7  0x00007f214d47c8b9 in pushbuf_validate () from /lib64/libdrm_nouveau.so.2
#8  0x00007f214e097c16 in nv50_flush () from /usr/lib64/dri/nouveau_dri.so
#9  0x00007f214dcbcdd4 in st_glFlush () from /usr/lib64/dri/nouveau_dri.so
#10 0x00007f214db6a9c8 in _mesa_make_current () from /usr/lib64/dri/nouveau_dri.so
#11 0x00007f214dcefe2b in st_api_make_current () from /usr/lib64/dri/nouveau_dri.so
#12 0x00007f214de59a7f in dri_unbind_context () from /usr/lib64/dri/nouveau_dri.so
#13 0x00007f214de5952a in driUnbindContext () from /usr/lib64/dri/nouveau_dri.so
#14 0x00007f216f2d4f05 in glXMakeCurrentReadSGI () from /lib64/libGL.so.1
#15 0x00007f217eb6e1a0 in QGLXContext::makeCurrent(QPlatformSurface*) () from /usr/lib64/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#16 0x00007f2179f9eb08 in QOpenGLContext::makeCurrent(QSurface*) () from /lib64/libQt5Gui.so.5
#17 0x00007f217a4d86b1 in QOpenGLWidget::makeCurrent() () from /lib64/libQt5Widgets.so.5
#18 0x00007f217a4d8845 in QOpenGLWidgetPrivate::render() () from /lib64/libQt5Widgets.so.5
#19 0x00007f217a4b8780 in QWidget::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#20 0x00007f217ea190ab in QtWebEngineCore::RenderWidgetHostViewQtDelegateWidget::event(QEvent*) () from /lib64/libQt5WebEngineWidgets.so.5
#21 0x00007f217a470ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#22 0x00007f217a478671 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#23 0x00007f2179c307aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#24 0x00007f217a4b146a in QWidgetPrivate::sendPaintEvent(QRegion const&) () from /lib64/libQt5Widgets.so.5
#25 0x00007f217a4809ae in QWidgetBackingStore::doSync() () from /lib64/libQt5Widgets.so.5
#26 0x00007f217a48147f in QWidgetBackingStore::sync() () from /lib64/libQt5Widgets.so.5
#27 0x00007f217a4a03df in QWidgetPrivate::syncBackingStore() () from /lib64/libQt5Widgets.so.5
#28 0x00007f217a4b8858 in QWidget::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#29 0x00007f217a5b801b in QMainWindow::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#30 0x00007f217d3127b7 in KMainWindow::event (this=this@entry=0x557ddb12e920, ev=ev@entry=0x557ddcbfa980) at /usr/src/debug/kxmlgui-5.27.0/src/kmainwindow.cpp:867
#31 0x00007f217d357365 in KXmlGuiWindow::event (this=0x557ddb12e920, ev=0x557ddcbfa980) at /usr/src/debug/kxmlgui-5.27.0/src/kxmlguiwindow.cpp:118
#32 0x00007f217a470ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#33 0x00007f217a478671 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#34 0x00007f2179c307aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#35 0x00007f2179c32e90 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#36 0x00007f2179c7e6a3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#37 0x00007f216c248e42 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#38 0x00007f216c2491c0 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#39 0x00007f216c24926c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#40 0x00007f2179c7e71f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#41 0x00007f2179c2f73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#42 0x00007f2179c3723c in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#43 0x0000557dda97746f in main ()

Reported using DrKonqi