Application: kdeinit5 (5.0.97)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-23-generic x86_64
Distribution: Ubuntu 18.04 LTS

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

- Unusual behavior I noticed:
When this crash happen, which occurs on log in, I notice the following things also happen. At least it seems that way.

1. Most of my desktop folder files and folders are not positioned where I want them.
2. Chrome browser says it is not the default browser. I will need to tell it again to be the default.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Konqueror (kdeinit5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5e62115e40 (LWP 2028))]

Thread 21 (Thread 0x7f5dddffb700 (LWP 2163)):
#0  0x00007f5e60198187 in __GI___libc_write (fd=2, buf=0x7f5dddff7ec0, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:27
#1  0x00007f5e601131bd in _IO_new_file_write (f=0x7f5e60474680 <_IO_2_1_stderr_>, data=0x7f5dddff7ec0, n=39) at fileops.c:1203
#2  0x00007f5e60113b2f in new_do_write (to_do=<optimized out>, data=0x7f5dddff7ec0 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7f5e60474680 <_IO_2_1_stderr_>) at fileops.c:457
#3  _IO_new_file_xsputn (f=0x7f5e60474680 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1277
#4  0x00007f5e600e6707 in buffered_vfprintf (s=s@entry=0x7f5e60474680 <_IO_2_1_stderr_>, format=format@entry=0x7f5e2e5266a8 "[%s] %s\n", args=args@entry=0x7f5dddffa480) at vfprintf.c:2350
#5  0x00007f5e600e3726 in _IO_vfprintf_internal (s=s@entry=0x7f5e60474680 <_IO_2_1_stderr_>, format=0x7f5e2e5266a8 "[%s] %s\n", ap=ap@entry=0x7f5dddffa480) at vfprintf.c:1301
#6  0x00007f5e601ba4c6 in ___fprintf_chk (fp=0x7f5e60474680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007f5e2e50e9ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f5e2e50eb44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007f5e2e51046c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f5e2e506114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007f5e30618ab9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f5e306494d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f5e5e5f46db in start_thread (arg=0x7f5dddffb700) at pthread_create.c:463
#17 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f5dde7fc700 (LWP 2162)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5dde7fb388) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55a0e59e5268, cond=0x7f5dde7fb360) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5dde7fb360, mutex=0x55a0e59e5268) at pthread_cond_wait.c:655
#3  0x00007f5e61583952 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f5e6158506f in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007f5e615851ef in xcb_wait_for_reply64 () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#6  0x00007f5e617dda78 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f5e5c2f533b in glXQueryVersion () from /usr/lib/x86_64-linux-gnu/libGLX.so.0
#8  0x00007f5e2fc79f13 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e2fc7a4f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e33851d45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f5e33851e3c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f5e335b1979 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f5e30649565 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f5e5e5f46db in start_thread (arg=0x7f5dde7fc700) at pthread_create.c:463
#16 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f5ddeffd700 (LWP 2161)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a0e61fd398) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55a0e61fd348, cond=0x55a0e61fd370) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55a0e61fd370, mutex=0x55a0e61fd348) at pthread_cond_wait.c:655
#3  0x00007f5e30647c95 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e30648177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e30648f11 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e5e5f46db in start_thread (arg=0x7f5ddeffd700) at pthread_create.c:463
#8  0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f5ddf7fe700 (LWP 2158)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a0e61fd398) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55a0e61fd348, cond=0x55a0e61fd370) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55a0e61fd370, mutex=0x55a0e61fd348) at pthread_cond_wait.c:655
#3  0x00007f5e30647c95 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e30648177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e30648f11 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e5e5f46db in start_thread (arg=0x7f5ddf7fe700) at pthread_create.c:463
#8  0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f5ddffff700 (LWP 2157)):
#0  0x00007f5e601980b4 in __GI___libc_read (fd=43, buf=0x7f5ddfffec5e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f5e5280fff1 in pa_read () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f5e52c939fe in pa_mainloop_prepare () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f5e52c94470 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f5e52c94530 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f5e52ca2399 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f5e5283f2a8 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f5e5e5f46db in start_thread (arg=0x7f5ddffff700) at pthread_create.c:463
#8  0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f5e0cff9700 (LWP 2156)):
#0  0x00007f5e5e5faed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f5e0cff89d0, expected=0, futex_word=0x7f5e0cff8b58) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f5e0cff8a70, mutex=0x7f5e0cff8b08, cond=0x7f5e0cff8b30) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f5e0cff8b30, mutex=0x7f5e0cff8b08, abstime=0x7f5e0cff8a70) at pthread_cond_wait.c:667
#3  0x00007f5e30676652 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3063d91e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e3061852b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e306494d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e5e5f46db in start_thread (arg=0x7f5e0cff9700) at pthread_create.c:463
#11 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f5e0d7fa700 (LWP 2155)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a0e6209ca8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55a0e6209be8, cond=0x55a0e6209c80) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55a0e6209c80, mutex=0x55a0e6209be8) at pthread_cond_wait.c:655
#3  0x00007f5e30dcf060 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e30648f11 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e5e5f46db in start_thread (arg=0x7f5e0d7fa700) at pthread_create.c:463
#7  0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f5e0dffb700 (LWP 2154)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5e0dffab38) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5e0dffaae8, cond=0x7f5e0dffab10) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5e0dffab10, mutex=0x7f5e0dffaae8) at pthread_cond_wait.c:655
#3  0x00007f5e3063d999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3063d9c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e306184db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e306494d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e5e5f46db in start_thread (arg=0x7f5e0dffb700) at pthread_create.c:463
#11 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f5e0e7fc700 (LWP 2153)):
#0  __pthread_mutex_unlock_usercnt (decr=1, mutex=0x55a0e623d5e8) at pthread_mutex_unlock.c:39
#1  __GI___pthread_mutex_unlock (mutex=0x55a0e623d5e8) at pthread_mutex_unlock.c:345
#2  0x00007f5e30674aa3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007f5e30617461 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e30618aa2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e2fecf978 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e2fecff2b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e30649588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f5e5e5f46db in start_thread (arg=0x7f5e0e7fc700) at pthread_create.c:463
#12 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f5e0effd700 (LWP 2152)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5e0effc758) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5e0effc708, cond=0x7f5e0effc730) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5e0effc730, mutex=0x7f5e0effc708) at pthread_cond_wait.c:655
#3  0x00007f5e3063d999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3063d9c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e306184db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e2fecf8c8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e2fecff1b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e30649588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f5e5e5f46db in start_thread (arg=0x7f5e0effd700) at pthread_create.c:463
#13 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f5e0f7fe700 (LWP 2151)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5e0f7fd758) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5e0f7fd708, cond=0x7f5e0f7fd730) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5e0f7fd730, mutex=0x7f5e0f7fd708) at pthread_cond_wait.c:655
#3  0x00007f5e3063d999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3063d9c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e306184db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e2fecf818 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e2fecff0b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e30649588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f5e5e5f46db in start_thread (arg=0x7f5e0f7fe700) at pthread_create.c:463
#13 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f5e0ffff700 (LWP 2150)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5e0fffe758) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5e0fffe708, cond=0x7f5e0fffe730) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5e0fffe730, mutex=0x7f5e0fffe708) at pthread_cond_wait.c:655
#3  0x00007f5e3063d999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3063d9c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e306184db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e2fecf768 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e2fecfefb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e30649588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f5e5e5f46db in start_thread (arg=0x7f5e0ffff700) at pthread_create.c:463
#13 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f5e1cf15700 (LWP 2149)):
#0  0x00007f5e601a9bb7 in epoll_wait (epfd=32, events=0x7f5dfc0020d0, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f5e2e5102c5 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#2  0x00007f5e2e506114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f5e30618b0d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e2fecf6b8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e2fecfeeb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e30649588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e5e5f46db in start_thread (arg=0x7f5e1cf15700) at pthread_create.c:463
#11 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f5e1d716700 (LWP 2148)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5e1d715758) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5e1d715708, cond=0x7f5e1d715730) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5e1d715730, mutex=0x7f5e1d715708) at pthread_cond_wait.c:655
#3  0x00007f5e3063d999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3063d9c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e306184db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e2fecf608 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e2fecfedb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e30649588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f5e5e5f46db in start_thread (arg=0x7f5e1d716700) at pthread_create.c:463
#13 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f5e1df17700 (LWP 2147)):
#0  0x00007f5e5e5faed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f5e1df16be0, expected=0, futex_word=0x7f5e14004600) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f5e1df16c80, mutex=0x7f5e140045b0, cond=0x7f5e140045d8) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f5e140045d8, mutex=0x7f5e140045b0, abstime=0x7f5e1df16c80) at pthread_cond_wait.c:667
#3  0x00007f5e30676652 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3064c799 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e3064ccfb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e5e5f46db in start_thread (arg=0x7f5e1df17700) at pthread_create.c:463
#8  0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f5e1e718700 (LWP 2146)):
#0  0x00007f5e5e5faed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f5e1e717be0, expected=0, futex_word=0x7f5e14004604) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f5e1e717c80, mutex=0x7f5e140045b0, cond=0x7f5e140045d8) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f5e140045d8, mutex=0x7f5e140045b0, abstime=0x7f5e1e717c80) at pthread_cond_wait.c:667
#3  0x00007f5e30676652 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3064c799 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e3064ccfb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e5e5f46db in start_thread (arg=0x7f5e1e718700) at pthread_create.c:463
#8  0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f5e1ef19700 (LWP 2145)):
#0  0x00007f5e5e5fa9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5e1ef18b38) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5e1ef18ae8, cond=0x7f5e1ef18b10) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5e1ef18b10, mutex=0x7f5e1ef18ae8) at pthread_cond_wait.c:655
#3  0x00007f5e3063d999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f5e3063d9c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f5e306184db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e306494d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e5e5f46db in start_thread (arg=0x7f5e1ef19700) at pthread_create.c:463
#11 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f5e1f71a700 (LWP 2144)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f5e601ba474 in ___fprintf_chk (fp=0x7f5e604758b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f5e2e5266a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f5e2e50e9ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f5e2e50eb44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f5e2e51046c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f5e2e506114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f5e30618ab9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5e30614da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f5e3063177b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f5e306494d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5e306455eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f5e5e5f46db in start_thread (arg=0x7f5e1f71a700) at pthread_create.c:463
#12 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f5e411e9700 (LWP 2063)):
#0  0x00007f5e601980b4 in __GI___libc_read (fd=8, buf=0x7f5e411e8be0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f5e5c9cf960 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5e5c98af27 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5e5c98b3e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5e5c98b54c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5e6075c90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5e607019ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5e6052022a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5e585d8d45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f5e6052516d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5e5e5f46db in start_thread (arg=0x7f5e411e9700) at pthread_create.c:463
#11 0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f5e4b4a9700 (LWP 2041)):
#0  0x00007f5e6019cbf9 in __GI___poll (fds=0x7f5e4b4a8d28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f5e61583747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f5e6158536a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f5e4dc2c2a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f5e6052516d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5e5e5f46db in start_thread (arg=0x7f5e4b4a9700) at pthread_create.c:463
#6  0x00007f5e601a988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f5e62115e40 (LWP 2028)):
[KCrash Handler]
#6  0x00007f5e5111ae78 in KonqView::url() const () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#7  0x00007f5e51150687 in KonqMainWindow::isPreloaded() const () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#8  0x00007f5e51185ce9 in KonqSessionManager::saveCurrentSessionToFile(KConfig*, QList<KonqMainWindow*> const&) () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#9  0x00007f5e51185f95 in KonqSessionManager::autoSaveSession() () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#10 0x00007f5e607325b5 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f5e6073f027 in QTimer::timeout(QTimer::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f5e6073f388 in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f5e607330db in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f5e5eb6382c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f5e5eb6b0f4 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f5e607039a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f5e6075bd8e in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f5e6075c551 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f5e5c98b287 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f5e5c98b4c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f5e5c98b54c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f5e6075c8ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f5e60cbcfb8 in QGuiApplication::sync() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#24 0x00007f5e35a9330d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#25 0x00007f5e2fc860b8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#26 0x00007f5e2fcb261b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#27 0x00007f5e2fca9f4b in QtWebEngineCore::WebContentsAdapter::load(QWebEngineHttpRequest const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#28 0x00007f5e2fcaa37e in QtWebEngineCore::WebContentsAdapter::load(QUrl const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#29 0x00007f5e35cd015b in ?? () from /usr/lib/x86_64-linux-gnu/libkwebenginepartlib.so
#30 0x00007f5e35cc6581 in WebEnginePart::openUrl(QUrl const&) () from /usr/lib/x86_64-linux-gnu/libkwebenginepartlib.so
#31 0x00007f5e35cce4fc in WebEngineBrowserExtension::restoreState(QDataStream&) () from /usr/lib/x86_64-linux-gnu/libkwebenginepartlib.so
#32 0x00007f5e51123179 in KonqView::restoreHistory() () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#33 0x00007f5e51123a16 in KonqView::loadHistoryConfig(KConfigGroup const&, QString const&) () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#34 0x00007f5e5112804b in KonqViewManager::loadItem(KConfigGroup const&, KonqFrameContainerBase*, QString const&, QUrl const&, bool, QUrl const&, QString const&, bool, int) () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#35 0x00007f5e51128691 in KonqViewManager::loadItem(KConfigGroup const&, KonqFrameContainerBase*, QString const&, QUrl const&, bool, QUrl const&, QString const&, bool, int) () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#36 0x00007f5e51129080 in KonqViewManager::loadRootItem(KConfigGroup const&, KonqFrameContainerBase*, QUrl const&, bool, QUrl const&, QString const&, bool, int) () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#37 0x00007f5e5112a5e3 in KonqViewManager::loadViewConfigFromGroup(KConfigGroup const&, QString const&, QUrl const&, KonqOpenURLRequest const&, bool) () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#38 0x00007f5e51161e00 in KonqMainWindow::readProperties(KConfigGroup const&) () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#39 0x00007f5e56af7b88 in KMainWindow::readPropertiesInternal(KConfig*, int) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#40 0x00007f5e56af7bd2 in KMainWindow::restore(int, bool) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#41 0x00007f5e5119651c in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#42 0x000055a0e50ea69d in ?? ()
#43 0x000055a0e50ebc8b in ?? ()
#44 0x000055a0e50ec51b in ?? ()
#45 0x000055a0e50e700c in ?? ()
#46 0x00007f5e600a9b97 in __libc_start_main (main=0x55a0e50e66c0, argc=5, argv=0x7fffd92a6138, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffd92a6128) at ../csu/libc-start.c:310
#47 0x000055a0e50e7c7a in _start ()

Reported using DrKonqi