Application: akregator (5.11.3)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.3.0-55-generic x86_64
Distribution: Ubuntu 19.10

-- Information about the crash:
- What I was doing when the application crashed:

Starting Akregator brings up an absurd number of unread items, then after a few minutes it crashes

(Installed from Ubuntu packages)

-- Backtrace:
Application: Akregator (akregator), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6b3cf2cf00 (LWP 3308))]

Thread 21 (Thread 0x7f6acb98b700 (LWP 6591)):
#0  0x00007f6b491f46e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f6acb98a470, clockid=<optimized out>, expected=0, futex_word=0x7f6acb98a5b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f6b491f46e0 in __pthread_cond_wait_common (abstime=0x7f6acb98a470, clockid=<optimized out>, mutex=0x7f6acb98a568, cond=0x7f6acb98a590) at pthread_cond_wait.c:520
#2  0x00007f6b491f46e0 in __pthread_cond_timedwait (cond=0x7f6acb98a590, mutex=0x7f6acb98a568, abstime=0x7f6acb98a470) at pthread_cond_wait.c:656
#3  0x00007f6b4c47110b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4c471ab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c471ba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c433705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b4c435f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f6b4c436258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f6b1b7fe700 (LWP 3584)):
#0  0x00007f6b491f46e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f6b1b7fd470, clockid=<optimized out>, expected=0, futex_word=0x7f6b1b7fd5b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f6b491f46e0 in __pthread_cond_wait_common (abstime=0x7f6b1b7fd470, clockid=<optimized out>, mutex=0x7f6b1b7fd568, cond=0x7f6b1b7fd590) at pthread_cond_wait.c:520
#2  0x00007f6b491f46e0 in __pthread_cond_timedwait (cond=0x7f6b1b7fd590, mutex=0x7f6b1b7fd568, abstime=0x7f6b1b7fd470) at pthread_cond_wait.c:656
#3  0x00007f6b4c47110b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4c471ab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c471ba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c433705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b4c435f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f6b4c436258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f6b1affd700 (LWP 24634)):
#0  0x00007f6b491f46e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f6b1affc470, clockid=<optimized out>, expected=0, futex_word=0x7f6b1affc5b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f6b491f46e0 in __pthread_cond_wait_common (abstime=0x7f6b1affc470, clockid=<optimized out>, mutex=0x7f6b1affc568, cond=0x7f6b1affc590) at pthread_cond_wait.c:520
#2  0x00007f6b491f46e0 in __pthread_cond_timedwait (cond=0x7f6b1affc590, mutex=0x7f6b1affc568, abstime=0x7f6b1affc470) at pthread_cond_wait.c:656
#3  0x00007f6b4c47110b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4c471ab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c471ba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c433705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b4c435f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f6b4c436258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f6aca887700 (LWP 3380)):
#0  0x00007f6b511438eb in __lll_lock_wait_private (futex=0x7f6b512994b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f6b51129146 in buffered_vfprintf (s=s@entry=0x7f6b512975c0 <_IO_2_1_stderr_>, format=format@entry=0x7f6b4707a6a8 "[%s] %s\n", args=args@entry=0x7f6aca885ee0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f6b51125df4 in __vfprintf_internal (s=0x7f6b512975c0 <_IO_2_1_stderr_>, format=0x7f6b4707a6a8 "[%s] %s\n", ap=ap@entry=0x7f6aca885ee0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f6b511dd483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f6b470629ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f6b47062b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f6b4706446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f6b4705a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f6b4c477564 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c410f0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b4c442d9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f6acb156700 (LWP 3374)):
#0  0x00007f6b491f42c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6acb1555c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f6b491f42c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f6acb155578, cond=0x7f6acb1555a0) at pthread_cond_wait.c:508
#2  0x00007f6b491f42c6 in __pthread_cond_wait (cond=0x7f6acb1555a0, mutex=0x7f6acb155578) at pthread_cond_wait.c:638
#3  0x00007f6b4c47103d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4c471ac0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c471b63 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c433718 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b4c435f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f6b4c436318 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f6af4f90700 (LWP 3372)):
#0  0x00007f6b491f42c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6b44655fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f6b491f42c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f6b44655f68, cond=0x7f6b44655f90) at pthread_cond_wait.c:508
#2  0x00007f6b491f42c6 in __pthread_cond_wait (cond=0x7f6b44655f90, mutex=0x7f6b44655f68) at pthread_cond_wait.c:638
#3  0x00007f6b4455f08a in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f6b4455f0af in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f6af57fa700 (LWP 3370)):
#0  0x00007f6b511c794d in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f6b5154e081 in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6b3800cfec in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/texttospeech/libqttexttospeech_flite.so
#3  0x00007f6b5154bc92 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#5  0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f6af5ffb700 (LWP 3365)):
#0  0x00007f6b511c1c2f in __GI___poll (fds=0x7f6acc0025e0, nfds=1, timeout=9325) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6b48835aae in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6b48835be3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6b5176a653 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6b517115cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6b5154aa45 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6b5154bc92 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f6af67fc700 (LWP 3352)):
#0  0x00007f6b511c1c2f in __GI___poll (fds=0x7f6ad8007170, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6b2b5d01c6 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f6b2b5c1831 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f6b2b5c1eb3 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f6b2b5c1f60 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f6b2b5d010d in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f6b2b56e37c in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.0.so
#7  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f6af6ffd700 (LWP 3351)):
#0  0x00007f6b491f46e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f6af6ffc470, clockid=<optimized out>, expected=0, futex_word=0x7f6af6ffc5b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f6b491f46e0 in __pthread_cond_wait_common (abstime=0x7f6af6ffc470, clockid=<optimized out>, mutex=0x7f6af6ffc568, cond=0x7f6af6ffc590) at pthread_cond_wait.c:520
#2  0x00007f6b491f46e0 in __pthread_cond_timedwait (cond=0x7f6af6ffc590, mutex=0x7f6af6ffc568, abstime=0x7f6af6ffc470) at pthread_cond_wait.c:656
#3  0x00007f6b4c47110b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4c471ab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c3eece8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c410f0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b4c442d9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f6af77fe700 (LWP 3350)):
#0  0x00007f6b491f42c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55655825b428) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f6b491f42c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55655825b368, cond=0x55655825b400) at pthread_cond_wait.c:508
#2  0x00007f6b491f42c6 in __pthread_cond_wait (cond=0x55655825b400, mutex=0x55655825b368) at pthread_cond_wait.c:638
#3  0x00007f6b4c47103d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4cd47598 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c444243 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f6af7fff700 (LWP 3349)):
#0  0x00007f6b511438eb in __lll_lock_wait_private (futex=0x7f6b512994b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f6b51129146 in buffered_vfprintf (s=s@entry=0x7f6b512975c0 <_IO_2_1_stderr_>, format=format@entry=0x7f6b4707a6a8 "[%s] %s\n", args=args@entry=0x7f6af7ffdee0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f6b51125df4 in __vfprintf_internal (s=0x7f6b512975c0 <_IO_2_1_stderr_>, format=0x7f6b4707a6a8 "[%s] %s\n", ap=ap@entry=0x7f6af7ffdee0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f6b511dd483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f6b470629ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f6b47062b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f6b4706446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f6b4705a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f6b4c477429 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c410f0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b4c442d9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f6b18ff9700 (LWP 3348)):
#0  0x00007f6b491f46e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f6b18ff8470, clockid=<optimized out>, expected=0, futex_word=0x7f6b18ff85b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f6b491f46e0 in __pthread_cond_wait_common (abstime=0x7f6b18ff8470, clockid=<optimized out>, mutex=0x7f6b18ff8568, cond=0x7f6b18ff8590) at pthread_cond_wait.c:520
#2  0x00007f6b491f46e0 in __pthread_cond_timedwait (cond=0x7f6b18ff8590, mutex=0x7f6b18ff8568, abstime=0x7f6b18ff8470) at pthread_cond_wait.c:656
#3  0x00007f6b4c47110b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4c471ab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c3eece8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c410f0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b4c442d9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f6b197fa700 (LWP 3347)):
#0  0x00007f6b491f42c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6b197f95c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f6b491f42c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f6b197f9578, cond=0x7f6b197f95a0) at pthread_cond_wait.c:508
#2  0x00007f6b491f42c6 in __pthread_cond_wait (cond=0x7f6b197f95a0, mutex=0x7f6b197f9578) at pthread_cond_wait.c:638
#3  0x00007f6b4c47103d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4c471ac0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c471b63 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c433718 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b4c435f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f6b4c4362b8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f6b19ffb700 (LWP 3346)):
#0  0x00007f6b511bd34f in __GI___libc_write (nbytes=39, buf=0x7f6b19ff7900, fd=2) at ../sysdeps/unix/sysv/linux/write.c:26
#1  0x00007f6b511bd34f in __GI___libc_write (fd=2, buf=0x7f6b19ff7900, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:24
#2  0x00007f6b5113dfed in _IO_new_file_write (f=0x7f6b512975c0 <_IO_2_1_stderr_>, data=0x7f6b19ff7900, n=39) at fileops.c:1180
#3  0x00007f6b5113e908 in new_do_write (to_do=<optimized out>, data=0x7f6b19ff7900 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7f6b512975c0 <_IO_2_1_stderr_>) at libioP.h:948
#4  0x00007f6b5113e908 in _IO_new_file_xsputn (n=39, data=<optimized out>, f=<optimized out>) at fileops.c:1259
#5  0x00007f6b5113e908 in _IO_new_file_xsputn (f=0x7f6b512975c0 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1201
#6  0x00007f6b51129023 in buffered_vfprintf (s=s@entry=0x7f6b512975c0 <_IO_2_1_stderr_>, format=format@entry=0x7f6b4707a6a8 "[%s] %s\n", args=args@entry=0x7f6b19ff9ec0, mode_flags=mode_flags@entry=2) at ../libio/libioP.h:948
#7  0x00007f6b51125df4 in __vfprintf_internal (s=0x7f6b512975c0 <_IO_2_1_stderr_>, format=0x7f6b4707a6a8 "[%s] %s\n", ap=ap@entry=0x7f6b19ff9ec0, mode_flags=2) at vfprintf-internal.c:1346
#8  0x00007f6b511dd483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#9  0x00007f6b470629ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f6b47062b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007f6b4706446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#12 0x00007f6b4705a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#13 0x00007f6b4c477564 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f6b4c410f0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f6b4bdc0c18 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f6b4c442d9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#18 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#19 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f6b1bfff700 (LWP 3342)):
#0  0x00007f6b491f46e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f6b1bffe470, clockid=<optimized out>, expected=0, futex_word=0x7f6b1bffe5b8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f6b491f46e0 in __pthread_cond_wait_common (abstime=0x7f6b1bffe470, clockid=<optimized out>, mutex=0x7f6b1bffe568, cond=0x7f6b1bffe590) at pthread_cond_wait.c:520
#2  0x00007f6b491f46e0 in __pthread_cond_timedwait (cond=0x7f6b1bffe590, mutex=0x7f6b1bffe568, abstime=0x7f6b1bffe470) at pthread_cond_wait.c:656
#3  0x00007f6b4c47110b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f6b4c471ab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f6b4c471ba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f6b4c433705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f6b4c435f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f6b4c436258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f6b2890d700 (LWP 3341)):
#0  0x00007f6b511438eb in __lll_lock_wait_private (futex=0x7f6b512994b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f6b51129146 in buffered_vfprintf (s=s@entry=0x7f6b512975c0 <_IO_2_1_stderr_>, format=format@entry=0x7f6b4707a6a8 "[%s] %s\n", args=args@entry=0x7f6b2890bec0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f6b51125df4 in __vfprintf_internal (s=0x7f6b512975c0 <_IO_2_1_stderr_>, format=0x7f6b4707a6a8 "[%s] %s\n", ap=ap@entry=0x7f6b2890bec0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f6b511dd483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f6b470629ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f6b47062b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f6b4706446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f6b4705a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f6b4c477564 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c410f0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b4c439e38 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f6b4c442d9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#14 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f6b2990f700 (LWP 3339)):
#0  0x00007f6b511438eb in __lll_lock_wait_private (futex=0x7f6b512994b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f6b51129146 in buffered_vfprintf (s=s@entry=0x7f6b512975c0 <_IO_2_1_stderr_>, format=format@entry=0x7f6b4707a6a8 "[%s] %s\n", args=args@entry=0x7f6b2990dee0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f6b51125df4 in __vfprintf_internal (s=0x7f6b512975c0 <_IO_2_1_stderr_>, format=0x7f6b4707a6a8 "[%s] %s\n", ap=ap@entry=0x7f6b2990dee0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f6b511dd483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f6b470629ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f6b47062b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f6b4706446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f6b4705a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f6b4c47747d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f6b4c410f0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f6b4c442d9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f6b4c473c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f6b38c44700 (LWP 3325)):
#0  0x00007f6b511c1c2f in __GI___poll (fds=0x7f6b30019e60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6b48835aae in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6b48835be3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6b5176a653 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6b517115cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6b5154aa45 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6b528cbefa in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f6b5154bc92 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f6b3a8ce700 (LWP 3324)):
#0  0x00007f6b491f42c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x556557e756dc) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f6b491f42c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x556557e75688, cond=0x556557e756b0) at pthread_cond_wait.c:508
#2  0x00007f6b491f42c6 in __pthread_cond_wait (cond=0x556557e756b0, mutex=0x556557e75688) at pthread_cond_wait.c:638
#3  0x00007f6b3af97aab in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f6b3af976cb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f6b491ed669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f6b511ce323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f6b3cf2cf00 (LWP 3308)):
[KCrash Handler]
#6  0x00007f6b280de8e6 in c4_FormatB::ItemLenOffCol(int, int&, c4_Column*&) (this=0x55655862cc70, index_=28532, off_=@0x7ffc2cb3dd6c: 0, col_=@0x7ffc2cb3dd70: 0x6e006100023424) at ./plugins/mk4storage/metakit/src/format.cpp:387
#7  0x00007f6b280deddc in c4_FormatB::GetOne(int, int&) (this=0x55655862cc70, index_=<optimized out>, length_=@0x7ffc2cb3ddbc: 21861) at ./plugins/mk4storage/metakit/src/format.cpp:636
#8  0x00007f6b280dee4d in c4_FormatS::Get(int, int&) (this=<optimized out>, index_=<optimized out>, length_=@0x7ffc2cb3ddbc: 21861) at ./plugins/mk4storage/metakit/src/format.cpp:925
#9  0x00007f6b280e0efc in c4_Handler::GetBytes(int, c4_Bytes&, bool) (this=<optimized out>, index_=index_@entry=28532, buf_=..., copySmall_=copySmall_@entry=false) at ./plugins/mk4storage/metakit/src/handler.cpp:57
#10 0x00007f6b280ee040 in c4_Sequence::Get(int, int, c4_Bytes&) (this=0x55655862d030, index_=28532, propId_=<optimized out>, buf_=...) at ./plugins/mk4storage/metakit/src/univ.inl:54
#11 0x00007f6b280e6413 in c4_HashViewer::KeySame(int, c4_Cursor) const (this=0x5565587c4960, row_=28532, cursor_=...) at ./plugins/mk4storage/metakit/src/remap.cpp:191
#12 0x00007f6b280e6850 in c4_HashViewer::LookDict(int, c4_Cursor) const (this=this@entry=0x5565587c4960, hash_=-1511151213, cursor_=...) at ./plugins/mk4storage/metakit/include/mk4.inl:848
#13 0x00007f6b280e69be in c4_HashViewer::Lookup(c4_Cursor, int&) (this=0x5565587c4960, key_=..., count_=@0x7ffc2cb3dfb4: 21861) at ./plugins/mk4storage/metakit/src/remap.cpp:402
#14 0x00007f6b280d83e7 in c4_CustomSeq::RestrictSearch(c4_Cursor, int&, int&) (this=<optimized out>, cursor_=..., pos_=@0x7ffc2cb3dfec: 0, count_=@0x7ffc2cb3dff4: 24964) at ./plugins/mk4storage/metakit/src/custom.cpp:128
#15 0x00007f6b280ec63f in c4_View::Find(c4_RowRef const&, int) const (this=0x55655862ce78, crit_=..., start_=<optimized out>, start_@entry=0) at ./plugins/mk4storage/metakit/include/mk4.inl:13
#16 0x00007f6b280f1210 in Akregator::Backend::FeedStorageMK4Impl::findArticle(QString const&) const (this=0x55655862d9c0, guid=...) at ./plugins/mk4storage/feedstoragemk4impl.cpp:224
#17 0x00007f6b280f187b in Akregator::Backend::FeedStorageMK4Impl::setStatus(QString const&, int) (this=0x55655862d9c0, guid=..., status=0) at ./plugins/mk4storage/feedstoragemk4impl.cpp:296
#18 0x00007f6b52d6d2c8 in Akregator::Article::setStatus(int) (this=0x5565584b4b48, stat=0) at ./src/article.cpp:385
#19 0x00007f6b52d713c3 in Akregator::Feed::fetch(bool) (this=0x55655862df20, followDiscovery=<optimized out>) at ./src/feed/feed.cpp:663
#20 0x00007f6b52d8b7d3 in Akregator::FetchQueue::fetchNextFeed() (this=0x55655822c2e0) at ./src/fetchqueue.cpp:91
#21 0x00007f6b52d8b7d3 in Akregator::FetchQueue::fetchNextFeed() (this=0x55655822c2e0) at ./src/fetchqueue.cpp:82
#22 0x00007f6b52d8b8ad in Akregator::FetchQueue::feedDone(Akregator::Feed*) (this=0x55655822c2e0, f=<optimized out>) at ./src/fetchqueue.cpp:125
#23 0x00007f6b5173e558 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f6b52d8db66 in Akregator::Feed::fetched(Akregator::Feed*) (this=this@entry=0x556558a788e0, _t1=<optimized out>, _t1@entry=0x556558a788e0) at ./obj-x86_64-linux-gnu/src/akregatorprivate_autogen/YZ6RKGYX6C/moc_feed.cpp:282
#25 0x00007f6b52d7505f in Akregator::Feed::fetchCompleted(Syndication::Loader*, QSharedPointer<Syndication::Feed>, Syndication::ErrorCode) (this=0x556558a788e0, l=<optimized out>, doc=..., status=<optimized out>) at ./src/feed/feed.cpp:738
#26 0x00007f6b52d8fdd3 in Akregator::Feed::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/include/c++/9/bits/atomic_base.h:318
#27 0x00007f6b5173e3f8 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f6b50df4196 in Syndication::Loader::loadingComplete(Syndication::Loader*, QSharedPointer<Syndication::Feed>, Syndication::ErrorCode) () at /usr/lib/x86_64-linux-gnu/libKF5Syndication.so.5abi1
#29 0x00007f6b50df18ed in Syndication::Loader::slotRetrieverDone(QByteArray const&, bool) () at /usr/lib/x86_64-linux-gnu/libKF5Syndication.so.5abi1
#30 0x00007f6b5173e558 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f6b50df4117 in Syndication::DataRetriever::dataRetrieved(QByteArray const&, bool) () at /usr/lib/x86_64-linux-gnu/libKF5Syndication.so.5abi1
#32 0x00007f6b52d7dced in Akregator::FeedRetriever::getFinished(KJob*) (this=0x55655dafad30, job=0x55655a3b6d00) at ./src/feed/feedretriever.cpp:77
#33 0x00007f6b5173e558 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f6b52850df0 in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#35 0x00007f6b528518fb in KJob::finishJob(bool) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#36 0x00007f6b49f2add8 in KIO::SimpleJob::slotFinished() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#37 0x00007f6b49f37166 in KIO::TransferJob::slotFinished() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#38 0x00007f6b5173e558 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f6b49ef90e2 in KIO::SlaveInterface::dispatch(int, QByteArray const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#40 0x00007f6b49ef71bf in KIO::SlaveInterface::dispatch() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#41 0x00007f6b49f00e22 in KIO::Slave::gotInput() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#42 0x00007f6b5173e558 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f6b49e7a70e in  () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#44 0x00007f6b5173ee4a in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007f6b52124a86 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f6b5212de00 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007f6b51712a2a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f6b517156a8 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f6b5176b037 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x00007f6b488358bd in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007f6b48835b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f6b48835be3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007f6b5176a635 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#54 0x00007f6b517115cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x00007f6b51719336 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x00005565574d5666 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:122
[Inferior 1 (process 3308) detached]

Possible duplicates by query: bug 386013.

Reported using DrKonqi