Application: akregator (5.11.3)
 (Compiled from sources)
Qt Version: 5.12.4
Frameworks Version: 5.67.0
Operating System: Linux 5.3.0-51-generic x86_64
Windowing system: X11
Distribution: Ubuntu 19.10

-- Information about the crash:
- What I was doing when the application crashed:
Starting the application
- Unusual behavior I noticed:
System crashed beforehand and this was the first time I started the application after that fact

The crash can be reproduced every time.

-- Backtrace:
Application: Akregator (akregator), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fac9c432f00 (LWP 55924))]

Thread 16 (Thread 0x7fac429f5700 (LWP 56068)):
#0  0x00007faca8c002c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fac429f45c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007faca8c002c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7fac429f4578, cond=0x7fac429f45a0) at pthread_cond_wait.c:508
#2  0x00007faca8c002c6 in __pthread_cond_wait (cond=0x7fac429f45a0, mutex=0x7fac429f4578) at pthread_cond_wait.c:638
#3  0x00007facac03c03d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007facac03cac0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007facac03cb63 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007facabffe718 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007facac000f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007facac001318 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fac5c861700 (LWP 56066)):
#0  0x00007faca8c002c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7faca3dcafb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007faca8c002c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7faca3dcaf68, cond=0x7faca3dcaf90) at pthread_cond_wait.c:508
#2  0x00007faca8c002c6 in __pthread_cond_wait (cond=0x7faca3dcaf90, mutex=0x7faca3dcaf68) at pthread_cond_wait.c:638
#3  0x00007faca3cd408a in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007faca3cd40af in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fac5d6de700 (LWP 56065)):
#0  0x00007facb0d9d94d in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007facb130a081 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fac7c58bfec in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/texttospeech/libqttexttospeech_flite.so
#3  0x00007facb1307c92 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#5  0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fac5dffb700 (LWP 56064)):
#0  0x00007facb0d97c2f in __GI___poll (fds=0x7fac480025e0, nfds=1, timeout=9915) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faca8043aae in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faca8043be3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007facb1526653 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007facb14cd5cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007facb1306a45 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007facb1307c92 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fac5e7fc700 (LWP 55971)):
#0  0x00007facb0d97c2f in __GI___poll (fds=0x7fac44007170, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fac925901c6 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fac92581831 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fac92581eb3 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fac92581f60 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fac9259010d in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fac9252e37c in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.0.so
#7  0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fac5effd700 (LWP 55965)):
#0  0x00007faca8c006e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7fac5effc470, clockid=<optimized out>, expected=0, futex_word=0x7fac5effc5b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007faca8c006e0 in __pthread_cond_wait_common (abstime=0x7fac5effc470, clockid=<optimized out>, mutex=0x7fac5effc568, cond=0x7fac5effc590) at pthread_cond_wait.c:520
#2  0x00007faca8c006e0 in __pthread_cond_timedwait (cond=0x7fac5effc590, mutex=0x7fac5effc568, abstime=0x7fac5effc470) at pthread_cond_wait.c:656
#3  0x00007facac03c10b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007facac03cab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007facabfb9ce8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007facabfdbf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007facac00dd9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fac5f7fe700 (LWP 55962)):
#0  0x00007faca8c002c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558adeee3428) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007faca8c002c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x558adeee3368, cond=0x558adeee3400) at pthread_cond_wait.c:508
#2  0x00007faca8c002c6 in __pthread_cond_wait (cond=0x558adeee3400, mutex=0x558adeee3368) at pthread_cond_wait.c:638
#3  0x00007facac03c03d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007facac912598 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007facac00f243 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fac5ffff700 (LWP 55959)):
#0  0x00007faca8c002c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fac5fffe5c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007faca8c002c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7fac5fffe578, cond=0x7fac5fffe5a0) at pthread_cond_wait.c:508
#2  0x00007faca8c002c6 in __pthread_cond_wait (cond=0x7fac5fffe5a0, mutex=0x7fac5fffe578) at pthread_cond_wait.c:638
#3  0x00007facac03c03d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007facac03cac0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007facac03cb63 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007facabffe718 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007facac000c6b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007facac0012b8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fac7e7fc700 (LWP 55955)):
#0  0x00007facb0d198eb in __lll_lock_wait_private (futex=0x7facb0e6f4b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007facb0cff146 in buffered_vfprintf (s=s@entry=0x7facb0e6d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7faca68826a8 "[%s] %s\n", args=args@entry=0x7fac7e7faec0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007facb0cfbdf4 in __vfprintf_internal (s=0x7facb0e6d5c0 <_IO_2_1_stderr_>, format=0x7faca68826a8 "[%s] %s\n", ap=ap@entry=0x7fac7e7faec0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007facb0db3483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007faca686a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007faca686ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007faca686c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007faca6862114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007facac042429 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007facabfdbf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007facab98bc18 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007facac00dd9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#14 0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fac7effd700 (LWP 55954)):
#0  0x00007faca8c006e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7fac7effc470, clockid=<optimized out>, expected=0, futex_word=0x7fac7effc5b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007faca8c006e0 in __pthread_cond_wait_common (abstime=0x7fac7effc470, clockid=<optimized out>, mutex=0x7fac7effc568, cond=0x7fac7effc590) at pthread_cond_wait.c:520
#2  0x00007faca8c006e0 in __pthread_cond_timedwait (cond=0x7fac7effc590, mutex=0x7fac7effc568, abstime=0x7fac7effc470) at pthread_cond_wait.c:656
#3  0x00007facac03c10b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007facac03cab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007facac03cba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007facabffe705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007facac000f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007facac001258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fac7f7fe700 (LWP 55953)):
#0  0x00007faca8c006e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7fac7f7fd470, clockid=<optimized out>, expected=0, futex_word=0x7fac7f7fd5b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007faca8c006e0 in __pthread_cond_wait_common (abstime=0x7fac7f7fd470, clockid=<optimized out>, mutex=0x7fac7f7fd568, cond=0x7fac7f7fd590) at pthread_cond_wait.c:520
#2  0x00007faca8c006e0 in __pthread_cond_timedwait (cond=0x7fac7f7fd590, mutex=0x7fac7f7fd568, abstime=0x7fac7f7fd470) at pthread_cond_wait.c:656
#3  0x00007facac03c10b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007facac03cab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007facac03cba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007facabffe705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007facac000f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007facac001258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fac7ffff700 (LWP 55952)):
#0  0x00007facb0d198eb in __lll_lock_wait_private (futex=0x7facb0e6f4b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007facb0cff146 in buffered_vfprintf (s=s@entry=0x7facb0e6d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7faca68826a8 "[%s] %s\n", args=args@entry=0x7fac7fffdec0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007facb0cfbdf4 in __vfprintf_internal (s=0x7facb0e6d5c0 <_IO_2_1_stderr_>, format=0x7faca68826a8 "[%s] %s\n", ap=ap@entry=0x7fac7fffdec0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007facb0db3483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007faca686a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007faca686ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007faca686c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007faca6862114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007facac042429 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007facabfdbf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007facac004e38 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007facac00dd9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#14 0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fac908a6700 (LWP 55951)):
#0  0x00007facb0d9334f in __GI___libc_write (nbytes=39, buf=0x7fac908a2920, fd=2) at ../sysdeps/unix/sysv/linux/write.c:26
#1  0x00007facb0d9334f in __GI___libc_write (fd=2, buf=0x7fac908a2920, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:24
#2  0x00007facb0d13fed in _IO_new_file_write (f=0x7facb0e6d5c0 <_IO_2_1_stderr_>, data=0x7fac908a2920, n=39) at fileops.c:1180
#3  0x00007facb0d14908 in new_do_write (to_do=<optimized out>, data=0x7fac908a2920 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7facb0e6d5c0 <_IO_2_1_stderr_>) at libioP.h:948
#4  0x00007facb0d14908 in _IO_new_file_xsputn (n=39, data=<optimized out>, f=<optimized out>) at fileops.c:1259
#5  0x00007facb0d14908 in _IO_new_file_xsputn (f=0x7facb0e6d5c0 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1201
#6  0x00007facb0cff023 in buffered_vfprintf (s=s@entry=0x7facb0e6d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7faca68826a8 "[%s] %s\n", args=args@entry=0x7fac908a4ee0, mode_flags=mode_flags@entry=2) at ../libio/libioP.h:948
#7  0x00007facb0cfbdf4 in __vfprintf_internal (s=0x7facb0e6d5c0 <_IO_2_1_stderr_>, format=0x7faca68826a8 "[%s] %s\n", ap=ap@entry=0x7fac908a4ee0, mode_flags=2) at vfprintf-internal.c:1346
#8  0x00007facb0db3483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#9  0x00007faca686a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007faca686ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007faca686c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#12 0x00007faca6862114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#13 0x00007facac04247d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007facabfdbf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007facac00dd9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007facac03ec75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#18 0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fac9af9c700 (LWP 55926)):
#0  0x00007facb0d97c2f in __GI___poll (fds=0x558adf0dc120, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faca8043aae in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faca8043be3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007facb1526653 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007facb14cd5cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007facb1306a45 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007facb2688efa in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007facb1307c92 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fac9baa9700 (LWP 55925)):
#0  0x00007facb0d97c2f in __GI___poll (fds=0x7fac9baa85a8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faca7fd4917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007faca7fd653a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fac9c020288 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007facb1307c92 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faca8bf9669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007facb0da4323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fac9c432f00 (LWP 55924)):
[KCrash Handler]
#6  0x00007facb0cc83eb in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007facb0ca7899 in __GI_abort () at abort.c:79
#8  0x00007facb12cea99 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007faca6d4cdc6 in  () at /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#10 0x00007faca6d4d0ea in  () at /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#11 0x00007faca6d4f2b6 in QQuickWidget::resizeEvent(QResizeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#12 0x00007facb0714321 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#13 0x00007facb1f2387e in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007faca6d4ff75 in QQuickWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#15 0x00007facb07146a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#16 0x00007facb1ee0a86 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007facb1ee9e00 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007facb14cea2a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007facb1f1bade in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007facb1f1f9b7 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007facb1f1f95a in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007facb1f1f95a in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#40 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#43 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#48 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007facb1f1f95a in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#51 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#52 0x00007facb1f1f970 in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#53 0x00007facb1f1f9d3 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#54 0x00007facb1f22b3b in QWidgetPrivate::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#55 0x0000558adc9f3ff9 in  ()
#56 0x00007facb2b78ac5 in KontactInterface::PimUniqueApplication::start(QStringList const&, bool) () at /usr/lib/x86_64-linux-gnu/libKF5KontactInterface.so.5
#57 0x0000558adc9f3627 in  ()
#58 0x00007facb0ca91e3 in __libc_start_main (main=0x558adc9f3130, argc=1, argv=0x7ffdc9ba2208, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdc9ba21f8) at ../csu/libc-start.c:308
#59 0x0000558adc9f381e in  ()
[Inferior 1 (process 55924) detached]

Possible duplicates by query: bug 420414, bug 419798, bug 418804, bug 418803, bug 418452.

Reported using DrKonqi