Application: kontact (5.18.1 (21.08.1))

Qt Version: 5.15.3
Frameworks Version: 5.86.0
Operating System: Linux 4.15.0-134-generic x86_64
Windowing System: X11
Drkonqi Version: 5.22.5
Distribution: KDE neon User Edition 5.22

-- Information about the crash:
- What I was doing when the application crashed:
-Start application. I have pushed in the application (kontact) starter and kontact has crashed. But some seconds later, kontact has started without doing nothing.
It has happened several times

The crash can be reproduced sometimes.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault

[New LWP 25057]
[New LWP 25058]
[New LWP 25059]
[New LWP 25060]
[New LWP 25061]
[New LWP 25116]
[New LWP 25118]
[New LWP 25124]
[New LWP 25125]
[New LWP 25126]
[New LWP 25131]
[New LWP 25133]
[New LWP 25153]
[New LWP 25155]
[New LWP 25210]
[New LWP 25211]
[New LWP 25214]
[New LWP 25215]
[New LWP 25218]
[New LWP 25602]
[New LWP 25621]
[New LWP 26071]
[New LWP 26078]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f245b8a6aff in __GI___poll (fds=0x7ffe43ba6278, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f2446d8b200 (LWP 25054))]

Thread 24 (Thread 0x7f241a7fc700 (LWP 26078)):
#0  0x00007f2451b7f48e in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f245be765eb in QEventDispatcherGlib::processEvents (this=0x7f240c0683e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#2  0x00007f245be1a87b in QEventLoop::exec (this=this@entry=0x7f241a7fb3a0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#3  0x00007f245bc34292 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#4  0x00007f245bc3542c in QThreadPrivate::start (arg=0x564799e60f90) at thread/qthread_unix.cpp:329
#5  0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f23e8fe8700 (LWP 26071)):
#0  0x00007ffe43bc3b62 in clock_gettime ()
#1  0x00007f245b871235 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7f23e8fe7110) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2  0x00007f245be75eb5 in qt_clock_gettime (ts=0x7f23e8fe7110, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007f245be7474d in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f2400021ff0) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007f245be74d29 in QTimerInfoList::timerWait (this=0x7f2400021ff0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007f245be76346 in timerSourcePrepareHelper (timeout=0x7f23e8fe71d4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f23e8fe71d4) at kernel/qeventdispatcher_glib.cpp:166
#9  0x00007f2451b7e8ef in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f2451b7f29b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f2451b7f4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f245be765eb in QEventDispatcherGlib::processEvents (this=0x7f2400022060, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007f245be1a87b in QEventLoop::exec (this=this@entry=0x7f23e8fe73a0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#14 0x00007f245bc34292 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x00007f245bc3542c in QThreadPrivate::start (arg=0x56479b1bd320) at thread/qthread_unix.cpp:329
#16 0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#17 0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f23dc750700 (LWP 25621)):
#0  0x00007f245b8a6aff in __GI___poll (fds=0x7f24400663d0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f23f659b1d6 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f23f658c841 in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f23f658cec3 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f23f658cf70 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f23f659b11d in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f23f64f272c in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.99.so
#7  0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f23ee5e6700 (LWP 25602)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f23ee5e50b0, clockid=<optimized out>, expected=0, futex_word=0x7f23ee5e5288) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f23ee5e50b0, clockid=<optimized out>, mutex=0x7f23ee5e5238, cond=0x7f23ee5e5260) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f23ee5e5260, mutex=0x7f23ee5e5238, abstime=0x7f23ee5e50b0) at pthread_cond_wait.c:656
#3  0x00007f2455c8720a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x0000000000006766 in ?? ()
#5  0x000000002ced91a3 in ?? ()
#6  0x0000000000006745 in ?? ()
#7  0x000000002ced91a3 in ?? ()
#8  0x00007f23f000f998 in ?? ()
#9  0x00007f24000070c0 in ?? ()
#10 0x0000000000000000 in ?? ()

Thread 20 (Thread 0x7f23ea1f9700 (LWP 25218)):
#0  0x00007ffe43bc3b62 in clock_gettime ()
#1  0x00007f245b871235 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7f23ea1f8110) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2  0x00007f245be75eb5 in qt_clock_gettime (ts=0x7f23ea1f8110, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007f245be7474d in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f23fc009900) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007f245be74d29 in QTimerInfoList::timerWait (this=0x7f23fc009900, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007f245be76346 in timerSourcePrepareHelper (timeout=0x7f23ea1f81d4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f23ea1f81d4) at kernel/qeventdispatcher_glib.cpp:166
#9  0x00007f2451b7e8ef in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f2451b7f29b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f2451b7f4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f245be765eb in QEventDispatcherGlib::processEvents (this=0x7f23fc004c50, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007f245be1a87b in QEventLoop::exec (this=this@entry=0x7f23ea1f83a0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#14 0x00007f245bc34292 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x00007f245bc3542c in QThreadPrivate::start (arg=0x56479abca4a0) at thread/qthread_unix.cpp:329
#16 0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#17 0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f23ea9fa700 (LWP 25215)):
#0  0x00007ffe43bc3b62 in clock_gettime ()
#1  0x00007f245b871235 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7f23ea9f9110) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2  0x00007f245be75eb5 in qt_clock_gettime (ts=0x7f23ea9f9110, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007f245be7474d in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f23f00230c0) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007f245be74d29 in QTimerInfoList::timerWait (this=0x7f23f00230c0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007f245be76346 in timerSourcePrepareHelper (timeout=0x7f23ea9f91d4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f23ea9f91d4) at kernel/qeventdispatcher_glib.cpp:166
#9  0x00007f2451b7e8ef in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f2451b7f29b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f2451b7f4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f245be765eb in QEventDispatcherGlib::processEvents (this=0x7f23f0020da0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007f245be1a87b in QEventLoop::exec (this=this@entry=0x7f23ea9f93a0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#14 0x00007f245bc34292 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x00007f245bc3542c in QThreadPrivate::start (arg=0x56479ab8e3d0) at thread/qthread_unix.cpp:329
#16 0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#17 0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f23eb623700 (LWP 25214)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f23eb622268) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f23eb622218, cond=0x7f23eb622240) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f23eb622240, mutex=0x7f23eb622218) at pthread_cond_wait.c:638
#3  0x00007f2455c870ab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f23eb6220c0 in ?? ()
#5  0x00007f2455c7c58f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x0000564799e51c30 in ?? ()
#7  0x00007f23eb6220e8 in ?? ()
#8  0x0000000000000000 in ?? ()

Thread 17 (Thread 0x7f23ec1d1700 (LWP 25211)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f23ec1d0188) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f23ec1d0138, cond=0x7f23ec1d0160) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f23ec1d0160, mutex=0x7f23ec1d0138) at pthread_cond_wait.c:638
#3  0x00007f2455c870ab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7f23ec9d2700 (LWP 25210)):
#0  __GI___libc_write (nbytes=39, buf=0x7f23ec9ce550, fd=2) at ../sysdeps/unix/sysv/linux/write.c:26
#1  __GI___libc_write (fd=2, buf=0x7f23ec9ce550, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:24
#2  0x00007f245b82300d in _IO_new_file_write (f=0x7f245b97d5c0 <_IO_2_1_stderr_>, data=0x7f23ec9ce550, n=39) at fileops.c:1176
#3  0x00007f245b823928 in new_do_write (to_do=<optimized out>, data=0x7f23ec9ce550 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7f245b97d5c0 <_IO_2_1_stderr_>) at libioP.h:948
#4  _IO_new_file_xsputn (n=39, data=<optimized out>, f=<optimized out>) at fileops.c:1255
#5  _IO_new_file_xsputn (f=0x7f245b97d5c0 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1197
#6  0x00007f245b80e0d3 in buffered_vfprintf (s=s@entry=0x7f245b97d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7f24506e3258 "[%s] %s\n", args=args@entry=0x7f23ec9d0b10, mode_flags=mode_flags@entry=2) at ../libio/libioP.h:948
#7  0x00007f245b80aea4 in __vfprintf_internal (s=0x7f245b97d5c0 <_IO_2_1_stderr_>, format=0x7f24506e3258 "[%s] %s\n", ap=ap@entry=0x7f23ec9d0b10, mode_flags=2) at vfprintf-internal.c:1346
#8  0x00007f245b8c21b3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#9  0x00007f24506c9b36 in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#10 0x00007f24506c9d09 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#11 0x00007f24506cb768 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#12 0x00007f24506c1625 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#13 0x00007f2455c96947 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f24340029a0 in ?? ()
#15 0x0001000000000000 in ?? ()
#16 0x00007f23ec9d1220 in ?? ()
#17 0x00007f23ec9d1218 in ?? ()
#18 0x00007f23ec9d12d8 in ?? ()
#19 0x00007f24340029a0 in ?? ()
#20 0x00007f23ec9d1370 in ?? ()
#21 0x00007f245b82e419 in __GI___libc_malloc (bytes=139792270299744) at malloc.c:3066
#22 0x0000000000000001 in ?? ()
#23 0x7fffffffffffffff in ?? ()
#24 0x00007f23ec9d1370 in ?? ()
#25 0x00007f23ec9d1290 in ?? ()
#26 0x00007f2455c4d69c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#27 0x0000000000000000 in ?? ()

Thread 15 (Thread 0x7f23f4d71700 (LWP 25155)):
#0  0x00007ffe43bc3b62 in clock_gettime ()
#1  0x00007f245b871235 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7f23f4d70110) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2  0x00007f245be75eb5 in qt_clock_gettime (ts=0x7f23f4d70110, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007f245be7474d in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f241c02f630) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007f245be74d29 in QTimerInfoList::timerWait (this=0x7f241c02f630, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007f245be76346 in timerSourcePrepareHelper (timeout=0x7f23f4d701d4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7f23f4d701d4) at kernel/qeventdispatcher_glib.cpp:166
#9  0x00007f2451b7e8ef in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f2451b7f29b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f2451b7f4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f245be765eb in QEventDispatcherGlib::processEvents (this=0x7f241c01fde0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007f245be1a87b in QEventLoop::exec (this=this@entry=0x7f23f4d703a0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#14 0x00007f245bc34292 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x00007f245bc3542c in QThreadPrivate::start (arg=0x5647996c2540) at thread/qthread_unix.cpp:329
#16 0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#17 0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f23f5e36700 (LWP 25153)):
#0  0x00007f2451b7ef2a in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2451b7f400 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2451b7f4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f245be765eb in QEventDispatcherGlib::processEvents (this=0x7f24140024f0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f245be1a87b in QEventLoop::exec (this=this@entry=0x7f23f5e353a0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f245bc34292 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f245bc3542c in QThreadPrivate::start (arg=0x564799681e20) at thread/qthread_unix.cpp:329
#7  0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f24053fa700 (LWP 25133)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f24053f9188) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f24053f9138, cond=0x7f24053f9160) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f24053f9160, mutex=0x7f24053f9138) at pthread_cond_wait.c:638
#3  0x00007f2455c870ab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7f2405bfb700 (LWP 25131)):
#0  __strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:202
#1  0x00007f245b7c8beb in transcmp (p1=0x7f2405bf9f10, p2=0x5647997c0de0) at dcigettext.c:290
#2  0x00007f245b8ae15b in __GI___tfind (compar=<optimized out>, vrootp=<optimized out>, key=<optimized out>) at tsearch.c:388
#3  __GI___tfind (key=key@entry=0x7f2405bf9f10, vrootp=vrootp@entry=0x7f245b97e848 <root>, compar=compar@entry=0x7f245b7c8bc0 <transcmp>) at tsearch.c:372
#4  0x00007f245b7c9b04 in __dcigettext (domainname=0x7f245b948405 <_libc_intl_domainname> "libc", msgid1=0x7f245b9488ac "Bad file descriptor", msgid2=msgid2@entry=0x0, plural=plural@entry=0, n=n@entry=0, category=category@entry=5) at dcigettext.c:569
#5  0x00007f245b7c8993 in __GI___dcgettext (domainname=<optimized out>, msgid=<optimized out>, category=category@entry=5) at dcgettext.c:47
#6  0x00007f245b833672 in __GI___strerror_r (errnum=errnum@entry=9, buf=buf@entry=0x0, buflen=buflen@entry=0) at _strerror.c:71
#7  0x00007f245b833593 in strerror (errnum=9) at strerror.c:31
#8  0x00007f24506c9cf6 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#9  0x00007f24506cb768 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#10 0x00007f24506c1625 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#11 0x00007f2455c967fc in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f2408006320 in ?? ()
#13 0x0001000000000000 in ?? ()
#14 0x00007f2405bfa220 in ?? ()
#15 0x00007f2405bfa218 in ?? ()
#16 0x00007f2405bfa2d8 in ?? ()
#17 0x000000000185abb6 in ?? ()
#18 0x0000000000000019 in ?? ()
#19 0x0000000000083376 in ?? ()
#20 0x0000000000000008 in ?? ()
#21 0x00007f240c037c70 in ?? ()
#22 0x7fffffffffffffff in ?? ()
#23 0x0000000000000001 in ?? ()
#24 0x7fffffffffffffff in ?? ()
#25 0x00007f2405bfa370 in ?? ()
#26 0x00007f2405bfa290 in ?? ()
#27 0x00007f2455c4d69c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#28 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7f24063fc700 (LWP 25126)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f24063fb268) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f24063fb218, cond=0x7f24063fb240) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f24063fb240, mutex=0x7f24063fb218) at pthread_cond_wait.c:638
#3  0x00007f2455c870ab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24063fb0c0 in ?? ()
#5  0x00007f2455c7c58f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f240c02cf80 in ?? ()
#7  0x00007f24063fb0e8 in ?? ()
#8  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f2406ffd700 (LWP 25125)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2406ffc188) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f2406ffc138, cond=0x7f2406ffc160) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f2406ffc160, mutex=0x7f2406ffc138) at pthread_cond_wait.c:638
#3  0x00007f2455c870ab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f24077fe700 (LWP 25124)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56479933ddcc) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56479933dd08, cond=0x56479933dda0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x56479933dda0, mutex=0x56479933dd08) at pthread_cond_wait.c:638
#3  0x00007f2455c870ab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f23fc002790 in ?? ()
#5  0x0000564799c49938 in ?? ()
#6  0x00007f24077fd3c0 in ?? ()
#7  0x00007f2455c6e7c1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f241affd700 (LWP 25118)):
#0  __lll_lock_wait_private (futex=0x7f245b97f4b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f245b80e1f6 in buffered_vfprintf (s=s@entry=0x7f245b97d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7f24506e3258 "[%s] %s\n", args=args@entry=0x7f241affbad0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f245b80aea4 in __vfprintf_internal (s=0x7f245b97d5c0 <_IO_2_1_stderr_>, format=0x7f24506e3258 "[%s] %s\n", ap=ap@entry=0x7f241affbad0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f245b8c21b3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f24506c9b36 in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007f24506c9d09 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f24506cb768 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f24506c1625 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007f2455c96947 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f241affc310 in ?? ()
#10 0x0001000000000000 in ?? ()
#11 0x00007f241affc1e0 in ?? ()
#12 0x00007f241affc1d8 in ?? ()
#13 0x00007f241affc298 in ?? ()
#14 0x00007f241affc310 in ?? ()
#15 0x00007f241affc370 in ?? ()
#16 0x00007f245b82e419 in __GI___libc_malloc (bytes=139793048519200) at malloc.c:3066
#17 0x0000000000000001 in ?? ()
#18 0x7fffffffffffffff in ?? ()
#19 0x00007f241affc370 in ?? ()
#20 0x00007f241affc250 in ?? ()
#21 0x00007f2455c4d69c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#22 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f241bfff700 (LWP 25116)):
#0  0x00007f245b80e21f in buffered_vfprintf (s=s@entry=0x7f245b97d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7f24506e3258 "[%s] %s\n", args=args@entry=0x7f241bffdaf0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2401
#1  0x00007f245b80aea4 in __vfprintf_internal (s=0x7f245b97d5c0 <_IO_2_1_stderr_>, format=0x7f24506e3258 "[%s] %s\n", ap=ap@entry=0x7f241bffdaf0, mode_flags=2) at vfprintf-internal.c:1346
#2  0x00007f245b8c21b3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#3  0x00007f24506c9b36 in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#4  0x00007f24506c9d09 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007f24506cb768 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007f24506c1625 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007f2455c967fc in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2410002510 in ?? ()
#9  0x0001000000000000 in ?? ()
#10 0x00007f241bffe200 in ?? ()
#11 0x00007f241bffe1f8 in ?? ()
#12 0x00007f241bffe2b8 in ?? ()
#13 0x0000000083fbfc21 in ?? ()
#14 0x00000000000008a6 in ?? ()
#15 0x00000000000506a1 in ?? ()
#16 0x00007f245b0c1d20 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00005647992d2e00 in ?? ()
#18 0x7fffffffffffffff in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x7fffffffffffffff in ?? ()
#21 0x00007f241bffe370 in ?? ()
#22 0x00007f241bffe270 in ?? ()
#23 0x00007f2455c4d69c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#24 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f242affd700 (LWP 25061)):
#0  0x00007f2451b7d262 in g_source_ref () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2451b7d328 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2451b7ecbf in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2451b7f312 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2451b7f4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f245be765eb in QEventDispatcherGlib::processEvents (this=0x7f241c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f245be1a87b in QEventLoop::exec (this=this@entry=0x7f242affc370, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#7  0x00007f245bc34292 in QThread::exec (this=this@entry=0x7f245cf2ad80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007f245cea6f4b in QDBusConnectionManager::run (this=0x7f245cf2ad80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:179
#9  0x00007f245bc3542c in QThreadPrivate::start (arg=0x7f245cf2ad80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:329
#10 0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f242b7fe700 (LWP 25060)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5647991d4658) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5647991d4608, cond=0x5647991d4630) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5647991d4630, mutex=0x5647991d4608) at pthread_cond_wait.c:638
#3  0x00007f243e834e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007f243e834a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f242bfff700 (LWP 25059)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5647991d4658) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5647991d4608, cond=0x5647991d4630) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5647991d4630, mutex=0x5647991d4608) at pthread_cond_wait.c:638
#3  0x00007f243e834e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007f243e834a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f2438f36700 (LWP 25058)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5647991d4658) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5647991d4608, cond=0x5647991d4630) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5647991d4630, mutex=0x5647991d4608) at pthread_cond_wait.c:638
#3  0x00007f243e834e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007f243e834a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f2444c51700 (LWP 25057)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5647991d4658) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5647991d4608, cond=0x5647991d4630) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5647991d4630, mutex=0x5647991d4608) at pthread_cond_wait.c:638
#3  0x00007f243e834e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007f243e834a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007f24526f1609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f245b8b3293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2446d8b200 (LWP 25054)):
[KCrash Handler]
#4  0x00007f245c948c49 in qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > > (ptr=...) at ../../include/QtCore/../../src/corelib/global/qglobal.h:1143
#5  QAction::d_func (this=0x0) at ../../include/QtWidgets/../../src/widgets/kernel/qaction.h:63
#6  QAction::setText (this=this@entry=0x0, text=...) at kernel/qaction.cpp:714
#7  0x00007f23f772de2c in KMMainWidget::updateFolderMenu (this=0x56479b802da0) at /usr/include/KF5/KI18n/klocalizedstring.h:1390
#8  0x00007f23f77394ff in KMMainWidget::setupActions (this=0x56479b802da0) at ./src/kmmainwidget.cpp:3384
#9  0x00007f23f773f108 in KMMainWidget::KMMainWidget (this=0x56479b802da0, parent=<optimized out>, aGUIClient=<optimized out>, actionCollection=<optimized out>, config=...) at ./src/kmmainwidget.cpp:249
#10 0x00007f23f7865e25 in KMailPart::KMailPart (this=this@entry=0x56479b70af40, parentWidget=parentWidget@entry=0x56479a689b70, parent=parent@entry=0x56479a689b70, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:257
#11 0x00007f23f7866356 in KPluginFactory::createPartInstance<KMailPart> (parentWidget=0x56479a689b70, parent=0x56479a689b70, args=...) at /usr/include/KF5/KCoreAddons/kpluginfactory.h:730
#12 0x00007f245cfa17d2 in KPluginFactory::create (this=this@entry=0x5647996511c0, iface=0x7f245b645548 "KParts::Part", parentWidget=parentWidget@entry=0x56479a689b70, parent=parent@entry=0x56479a689b70, args=..., keyword=...) at ./src/lib/plugin/kpluginfactory.cpp:212
#13 0x00007f245d157fe3 in KPluginFactory::create<KParts::Part> (args=..., parent=0x56479a689b70, this=0x5647996511c0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:153
#14 KontactInterface::Core::createPart (this=0x56479a689b70, libname=0x56479a0780e8 "kmailpart") at ./src/core.cpp:79
#15 0x00007f245d15b172 in KontactInterface::Plugin::loadPart (this=this@entry=0x56479c4d8b20) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:208
#16 0x00007f24040180ea in KMailPlugin::createPart (this=0x56479c4d8b20) at ./src/kontactplugin/kmail/kmail_plugin.cpp:151
#17 0x00007f245d15c52c in KontactInterface::Plugin::part (this=this@entry=0x56479c4d8b20) at ./src/plugin.cpp:141
#18 0x00007f245d18c5d2 in Kontact::MainWindow::selectPlugin (this=0x56479a689b70, plugin=0x56479c4d8b20) at ./src/mainwindow.cpp:561
#19 0x00007f245d18ad84 in Kontact::MainWindow::loadSettings (this=0x56479a689b70) at ./src/mainwindow.cpp:690
#20 0x00007f245d18ecbc in Kontact::MainWindow::initObject (this=0x56479a689b70) at ./src/mainwindow.cpp:159
#21 0x00007f245d18f53e in Kontact::MainWindow::MainWindow (this=0x56479a689b70, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ./src/mainwindow.cpp:88
#22 0x00005647990025f5 in KontactApp::activate (this=0x7ffe43ba8210, args=..., workingDir=...) at ./src/main.cpp:119
#23 0x00007f245d15e76e in KontactInterface::PimUniqueApplication::newInstance (this=0x7ffe43ba8210, startupId=..., arguments=..., workingDirectory=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:919
#24 0x00007f245d156d4a in KontactInterface::PimUniqueApplication::qt_static_metacall (_c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7ffe43ba78a0, _o=<optimized out>) at ./obj-x86_64-linux-gnu/src/KF5KontactInterface_autogen/EWIEGA46WW/moc_pimuniqueapplication.cpp:87
#25 KontactInterface::PimUniqueApplication::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=0x7ffe43ba78a0) at ./obj-x86_64-linux-gnu/src/KF5KontactInterface_autogen/EWIEGA46WW/moc_pimuniqueapplication.cpp:79
#26 0x00007f245d157123 in KontactInterface::PimUniqueApplication::qt_metacall (this=0x7ffe43ba8210, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7ffe43ba78a0) at ./obj-x86_64-linux-gnu/src/KF5KontactInterface_autogen/EWIEGA46WW/moc_pimuniqueapplication.cpp:124
#27 0x00007f245ceb355b in QDBusConnectionPrivate::deliverCall (this=<optimized out>, object=<optimized out>, msg=..., metaTypes=..., slotIdx=<optimized out>) at qdbusintegrator.cpp:1001
#28 0x00007f245ceb8bdf in QDBusConnectionPrivate::activateCall (this=this@entry=0x7f241c003a00, object=0x7ffe43ba8210, flags=81, msg=...) at qdbusintegrator.cpp:911
#29 0x00007f245ceb910f in QDBusConnectionPrivate::activateCall (msg=..., flags=<optimized out>, object=<optimized out>, this=0x7f241c003a00) at qdbusintegrator.cpp:853
#30 QDBusConnectionPrivate::activateObject (pathStartPos=<optimized out>, msg=..., node=..., this=0x7f241c003a00) at qdbusintegrator.cpp:1521
#31 QDBusConnectionPrivate::activateObject (this=0x7f241c003a00, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1447
#32 0x00007f245cebc01c in QDBusActivateObjectEvent::placeMetaCall (this=0x564799e43f50) at qdbusintegrator.cpp:1617
#33 0x00007f245be49919 in QObject::event (this=this@entry=0x7ffe43ba8210, e=e@entry=0x564799e43f50) at kernel/qobject.cpp:1314
#34 0x00007f245be22980 in QCoreApplication::event (this=this@entry=0x7ffe43ba8210, e=e@entry=0x564799e43f50) at kernel/qcoreapplication.cpp:1953
#35 0x00007f245c252055 in QGuiApplication::event (this=this@entry=0x7ffe43ba8210, e=e@entry=0x564799e43f50) at kernel/qguiapplication.cpp:1962
#36 0x00007f245c9540a4 in QApplication::event (this=0x7ffe43ba8210, e=0x564799e43f50) at kernel/qapplication.cpp:1926
#37 0x00007f245c94cdc3 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x7ffe43ba8210, e=0x564799e43f50) at kernel/qapplication.cpp:3632
#38 0x00007f245c955bb8 in QApplication::notify(QObject*, QEvent*) () at kernel/qapplication.cpp:3156
#39 0x00007f245be1bd7a in QCoreApplication::notifyInternal2 (receiver=0x7ffe43ba8210, event=0x564799e43f50) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#40 0x00007f245be1e681 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x5647990148f0) at kernel/qcoreapplication.cpp:1821
#41 0x00007f245be76f77 in postEventSourceDispatch (s=0x564799127860) at kernel/qeventdispatcher_glib.cpp:277
#42 0x00007f2451b7f17d in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007f2451b7f400 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f2451b7f4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f245be765d2 in QEventDispatcherGlib::processEvents (this=0x564799126430, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#46 0x00007f245be1a87b in QEventLoop::exec (this=this@entry=0x7ffe43ba8100, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#47 0x00007f245be22a34 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#48 0x0000564799001612 in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:216
[Inferior 1 (process 25054) detached]

Possible duplicates by query: bug 443037, bug 442550, bug 393262, bug 381413, bug 378864.

Reported using DrKonqi