https://bugs.kde.org/show_bug.cgi?id=423624

            Bug ID: 423624
           Summary: Kontact (Kmail) crashes while marking bunch of emails
                    as Read
           Product: kontact
           Version: unspecified
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kdepim-b...@kde.org
          Reporter: xandr...@protonmail.com
  Target Milestone: ---

Application: kontact (5.13.3 (19.12.3))

Qt Version: 5.12.8
Frameworks Version: 5.68.0
Operating System: Linux 5.4.0-39-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Some folder had unread emails. I opened that folder, selected all emails and
from a pop up manu selected "Mark all as read".

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f669968af00 (LWP 467483))]

Thread 24 (Thread 0x7f65f7fff700 (LWP 467609)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f65f7ffe4a0, clockid=<optimized out>, expected=0,
futex_word=0x7f65f7ffe5e8) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f65f7ffe4a0, clockid=<optimized
out>, mutex=0x7f65f7ffe598, cond=0x7f65f7ffe5c0) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f65f7ffe5c0, mutex=0x7f65f7ffe598,
abstime=0x7f65f7ffe4a0) at pthread_cond_wait.c:656
#3  0x00007f66a60b9b2e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba51f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60ba615 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a607bda6 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a607ec48 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a607eef8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f6611ec4700 (LWP 467608)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f6611ec34a0, clockid=<optimized out>, expected=0,
futex_word=0x7f6611ec35e8) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f6611ec34a0, clockid=<optimized
out>, mutex=0x7f6611ec3598, cond=0x7f6611ec35c0) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f6611ec35c0, mutex=0x7f6611ec3598,
abstime=0x7f6611ec34a0) at pthread_cond_wait.c:656
#3  0x00007f66a60b9b2e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba51f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60ba615 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a607bda6 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a607ec48 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a607eef8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f66126c5700 (LWP 467607)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f66126c44a0, clockid=<optimized out>, expected=0,
futex_word=0x7f66126c45e8) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f66126c44a0, clockid=<optimized
out>, mutex=0x7f66126c4598, cond=0x7f66126c45c0) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f66126c45c0, mutex=0x7f66126c4598,
abstime=0x7f66126c44a0) at pthread_cond_wait.c:656
#3  0x00007f66a60b9b2e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba51f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60ba615 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a607bda6 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a607ec48 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a607eef8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f6683fff700 (LWP 467604)):
#0  0x00007f66ab1cb368 in g_mutex_unlock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f66ab17dbd9 in g_main_context_check () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f66ab17e152 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66ab17e2e3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f66ad0d7583 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66ad07e4db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66aceb6785 in QThread::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66aceb79d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f6613424700 (LWP 467544)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f66aceb9dd1 in QSemaphore::acquire(int) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f66203ef72c in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/texttospeech/libqttexttospeech_flite.so
#3  0x00007f66aceb79d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#5  0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f6613fff700 (LWP 467541)):
#0  0x00007f66ab1cb33d in g_mutex_lock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f66ab17e194 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f66ab17e2e3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66ad0d7583 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f66ad07e4db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66aceb6785 in QThread::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66aceb79d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#8  0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f6620d43700 (LWP 467531)):
#0  0x00007f66ab1cb368 in g_mutex_unlock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f66ab17d721 in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f66ab17e0db in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66ab17e2e3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f66ad0d7583 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66ad07e4db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66aceb6785 in QThread::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66aceb79d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f6621544700 (LWP 467530)):
#0  __GI___libc_read (nbytes=16, buf=0x7f6621543490, fd=92) at
../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=92, buf=0x7f6621543490, nbytes=16) at
../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f66ab1c689f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66ab17dcfe in g_main_context_check () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f66ab17e152 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f66ab17e2e3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f66ad0d7583 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66ad07e4db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f66aceb6785 in QThread::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f66aceb79d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f6621dc2700 (LWP 467529)):
#0  0x00007f66ab1cb33d in g_mutex_lock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f66ab17d234 in g_main_context_acquire () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f66ab17e065 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66ab17e2e3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f66ad0d7583 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66ad07e4db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66aceb6785 in QThread::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f66aceb79d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f66549f9700 (LWP 467516)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f66549f85f8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f66549f85a8,
cond=0x7f66549f85d0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f66549f85d0, mutex=0x7f66549f85a8) at
pthread_cond_wait.c:638
#3  0x00007f66a60b9a5e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba530 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60ba5d3 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a607bdb8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a607ec48 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a607efb8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f66551fa700 (LWP 467515)):
#0  __lll_lock_wait_private (futex=0x7f66acbf74b0 <_IO_stdfile_2_lock>) at
./lowlevellock.c:35
#1  0x00007f66aca861f6 in buffered_vfprintf (s=s@entry=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=format@entry=0x7f66a0e5a258 "[%s] %s\n",
args=args@entry=0x7f66551f8ef0, mode_flags=mode_flags@entry=2) at
vfprintf-internal.c:2381
#2  0x00007f66aca82ea4 in __vfprintf_internal (s=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=0x7f66a0e5a258 "[%s] %s\n",
ap=ap@entry=0x7f66551f8ef0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f66acb3a023 in ___fprintf_chk (fp=<optimized out>, flag=<optimized
out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f66a0e40b36 in event_logv_ () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007f66a0e40d09 in event_warn () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f66a0e42768 in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f66a0e38625 in event_base_loop () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f66a60c0318 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a6059e9f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66a60847e1 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#13 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f66567fc700 (LWP 467513)):
#0  0x00007f66acb1e96f in __GI___poll (fds=0x7f6638007170, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f668c3b01d6 in ?? () from /lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f668c3a1841 in pa_mainloop_poll () from
/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f668c3a1ec3 in pa_mainloop_iterate () from
/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f668c3a1f70 in pa_mainloop_run () from
/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f668c3b011d in ?? () from /lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f668c34e57c in ?? () from
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.99.so
#7  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#8  0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f6656ffd700 (LWP 467512)):
#0  __lll_lock_wait_private (futex=0x7f66acbf74b0 <_IO_stdfile_2_lock>) at
./lowlevellock.c:35
#1  0x00007f66aca861f6 in buffered_vfprintf (s=s@entry=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=format@entry=0x7f66a0e5a258 "[%s] %s\n",
args=args@entry=0x7f6656ffbef0, mode_flags=mode_flags@entry=2) at
vfprintf-internal.c:2381
#2  0x00007f66aca82ea4 in __vfprintf_internal (s=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=0x7f66a0e5a258 "[%s] %s\n",
ap=ap@entry=0x7f6656ffbef0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f66acb3a023 in ___fprintf_chk (fp=<optimized out>, flag=<optimized
out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f66a0e40b36 in event_logv_ () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007f66a0e40d09 in event_warn () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f66a0e42768 in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f66a0e38625 in event_base_loop () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f66a60c0318 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a6059e9f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66a60847e1 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#13 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f66577fe700 (LWP 467511)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f66577fd460, clockid=<optimized out>, expected=0,
futex_word=0x7f66577fd5a8) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f66577fd460, clockid=<optimized
out>, mutex=0x7f66577fd558, cond=0x7f66577fd580) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f66577fd580, mutex=0x7f66577fd558,
abstime=0x7f66577fd460) at pthread_cond_wait.c:656
#3  0x00007f66a60b9b2e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba51f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60374f8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a6059e9f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a60847e1 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f6657fff700 (LWP 467510)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f6657ffe460, clockid=<optimized out>, expected=0,
futex_word=0x7f6657ffe5a8) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f6657ffe460, clockid=<optimized
out>, mutex=0x7f6657ffe558, cond=0x7f6657ffe580) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f6657ffe580, mutex=0x7f6657ffe558,
abstime=0x7f6657ffe460) at pthread_cond_wait.c:656
#3  0x00007f66a60b9b2e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba51f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60374f8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a6059e9f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a60847e1 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f6680ff9700 (LWP 467509)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55f0fa0dc738) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f0fa0dc678,
cond=0x55f0fa0dc710) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f0fa0dc710, mutex=0x55f0fa0dc678) at
pthread_cond_wait.c:638
#3  0x00007f66a60b9a5e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a68a5458 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a608c5e1 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#8  0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f66817fa700 (LWP 467508)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f66817f95f8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f66817f95a8,
cond=0x7f66817f95d0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f66817f95d0, mutex=0x7f66817f95a8) at
pthread_cond_wait.c:638
#3  0x00007f66a60b9a5e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba530 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60ba5d3 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a607bdb8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a607ec48 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a607ef58 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f6681ffb700 (LWP 467507)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f6681ffa4a0, clockid=<optimized out>, expected=0,
futex_word=0x7f6681ffa5e8) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f6681ffa4a0, clockid=<optimized
out>, mutex=0x7f6681ffa598, cond=0x7f6681ffa5c0) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f6681ffa5c0, mutex=0x7f6681ffa598,
abstime=0x7f6681ffa4a0) at pthread_cond_wait.c:656
#3  0x00007f66a60b9b2e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba51f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60ba615 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a607bda6 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a607ec48 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a607eef8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f66837fe700 (LWP 467504)):
#0  __lll_lock_wait_private (futex=0x7f66acbf74b0 <_IO_stdfile_2_lock>) at
./lowlevellock.c:35
#1  0x00007f66aca861f6 in buffered_vfprintf (s=s@entry=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=format@entry=0x7f66a0e5a258 "[%s] %s\n",
args=args@entry=0x7f66837fced0, mode_flags=mode_flags@entry=2) at
vfprintf-internal.c:2381
#2  0x00007f66aca82ea4 in __vfprintf_internal (s=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=0x7f66a0e5a258 "[%s] %s\n",
ap=ap@entry=0x7f66837fced0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f66acb3a023 in ___fprintf_chk (fp=<optimized out>, flag=<optimized
out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f66a0e40b36 in event_logv_ () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007f66a0e40d09 in event_warn () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f66a0e42768 in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f66a0e38625 in event_base_loop () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f66a60c0318 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a6059e9f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66a59e87b8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f66a60847e1 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#14 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f668cd10700 (LWP 467502)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f668cd0f4a0, clockid=<optimized out>, expected=0,
futex_word=0x7f668cd0f5e8) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f668cd0f4a0, clockid=<optimized
out>, mutex=0x7f668cd0f598, cond=0x7f668cd0f5c0) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f668cd0f5c0, mutex=0x7f668cd0f598,
abstime=0x7f668cd0f4a0) at pthread_cond_wait.c:656
#3  0x00007f66a60b9b2e in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f66a60ba51f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f66a60ba615 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f66a607bda6 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f66a607ec48 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f66a607eef8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f668d511700 (LWP 467501)):
#0  __lll_lock_wait_private (futex=0x7f66acbf74b0 <_IO_stdfile_2_lock>) at
./lowlevellock.c:35
#1  0x00007f66aca861f6 in buffered_vfprintf (s=s@entry=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=format@entry=0x7f66a0e5a258 "[%s] %s\n",
args=args@entry=0x7f668d50fed0, mode_flags=mode_flags@entry=2) at
vfprintf-internal.c:2381
#2  0x00007f66aca82ea4 in __vfprintf_internal (s=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=0x7f66a0e5a258 "[%s] %s\n",
ap=ap@entry=0x7f668d50fed0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f66acb3a023 in ___fprintf_chk (fp=<optimized out>, flag=<optimized
out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f66a0e40b36 in event_logv_ () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007f66a0e40d09 in event_warn () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f66a0e42768 in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f66a0e38625 in event_base_loop () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f66a60c0454 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f66a6059e9f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f66a60822f8 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f66a60847e1 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#14 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f668dd12700 (LWP 467500)):
#0  0x00007f66aca9b9ef in new_do_write (to_do=<optimized out>,
data=0x7f668dd0e930 "[warn] epoll_wait: Bad file descriptor\n",
fp=0x7f66acbf55c0 <_IO_2_1_stderr_>) at libioP.h:947
#1  _IO_new_file_xsputn (n=39, data=<optimized out>, f=<optimized out>) at
fileops.c:1255
#2  _IO_new_file_xsputn (f=0x7f66acbf55c0 <_IO_2_1_stderr_>, data=<optimized
out>, n=39) at fileops.c:1197
#3  0x00007f66aca860d3 in buffered_vfprintf (s=s@entry=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=format@entry=0x7f66a0e5a258 "[%s] %s\n",
args=args@entry=0x7f668dd10ef0, mode_flags=mode_flags@entry=2) at
../libio/libioP.h:948
#4  0x00007f66aca82ea4 in __vfprintf_internal (s=0x7f66acbf55c0
<_IO_2_1_stderr_>, format=0x7f66a0e5a258 "[%s] %s\n",
ap=ap@entry=0x7f668dd10ef0, mode_flags=2) at vfprintf-internal.c:1346
#5  0x00007f66acb3a023 in ___fprintf_chk (fp=<optimized out>, flag=<optimized
out>, format=<optimized out>) at fprintf_chk.c:33
#6  0x00007f66a0e40b36 in event_logv_ () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f66a0e40d09 in event_warn () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f66a0e42768 in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#9  0x00007f66a0e38625 in event_base_loop () from
/lib/x86_64-linux-gnu/libevent-2.1.so.7
#10 0x00007f66a60c036a in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f66a6059e9f in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f66a60847e1 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f66a60bcb63 in ?? () from
/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#15 0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f6694903700 (LWP 467486)):
#0  0x00007f66acb1e96f in __GI___poll (fds=0x7f668803c450, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f66ab17e1ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f66ab17e2e3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f66ad0d7583 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f66ad07e4db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f66aceb6785 in QThread::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f66ac4e0efa in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f66aceb79d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f66abb16609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f66acb2b103 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f669968af00 (LWP 467483)):
[KCrash Handler]
#6  0x00007f66adadab96 in QWidget::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007f66ada97a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f66adaa10f0 in QApplication::notify(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f66ad07f93a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f66adadabb4 in QWidget::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f66ada97a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f66adaa10f0 in QApplication::notify(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f66ad07f93a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f66adadabb4 in QWidget::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f66adb87d52 in QFrame::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f66ada97a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f66adaa10f0 in QApplication::notify(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f66ad07f93a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f66adadabb4 in QWidget::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f66ada97a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f66adaa10f0 in QApplication::notify(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f66ad07f93a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f66adadabb4 in QWidget::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f66ada97a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f66adaa10f0 in QApplication::notify(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f66ad07f93a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f66adadabb4 in QWidget::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f66adbef148 in QMainWindow::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f66ae1989ab in KMainWindow::event(QEvent*) () from
/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#30 0x00007f66ae1e35bb in KXmlGuiWindow::event(QEvent*) () from
/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#31 0x00007f66ada97a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007f66adaa10f0 in QApplication::notify(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f66ad07f93a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f66ada9eda7 in QApplication::setActiveWindow(QWidget*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f66ada9efd3 in
QApplicationPrivate::notifyActiveWindowChange(QWindow*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f66ad465085 in
QGuiApplicationPrivate::processActivatedEvent(QWindowSystemInterfacePrivate::ActivatedWindowEvent*)
() from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#37 0x00007f66ad46a045 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
() from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#38 0x00007f66ad44435b in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#39 0x00007f6698d5c32e in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#40 0x00007f66ab17dfbd in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007f66ab17e240 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007f66ab17e2e3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007f66ad0d7565 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007f66ad07e4db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007f66ad086246 in QCoreApplication::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x000055f0f7a5dcde in ?? ()
#47 0x00007f66aca300b3 in __libc_start_main (main=0x55f0f7a5d160, argc=1,
argv=0x7ffc6b965d88, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffc6b965d78) at ../csu/libc-start.c:308
#48 0x000055f0f7a5e4fe in ?? ()
[Inferior 1 (process 467483) detached]

Possible duplicates by query: bug 423579, bug 423557, bug 423173, bug 423132,
bug 422775.

Reported using DrKonqi

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