Bug 406185 - Kmail stops deplaying emails, crash and hangs on Ctl+Q
Summary: Kmail stops deplaying emails, crash and hangs on Ctl+Q
Status: RESOLVED DUPLICATE of bug 400581
Alias: None
Product: kontact
Classification: Applications
Component: mail (show other bugs)
Version: unspecified
Platform: Ubuntu Linux
: NOR crash
Target Milestone: ---
Assignee: kdepim bugs
URL:
Keywords: drkonqi
Depends on:
Blocks:
 
Reported: 2019-04-03 13:59 UTC by afogl001
Modified: 2019-04-19 11:49 UTC (History)
1 user (show)

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Latest Commit:
Version Fixed In:

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Description afogl001 2019-04-03 13:59:29 UTC 
Application: kontact (5.10.1)
 (Compiled from sources)
Qt Version: 5.12.0
Frameworks Version: 5.56.0
Operating System: Linux 4.15.0-47-generic x86_64
Distribution: KDE neon User Edition 5.15

-- Information about the crash:
- What I was doing when the application crashed:
I'm not 100% sure what causes it but it seems to occur more readily when I transfer into or otherwise use my KolabNow account.  If I avoid KolabNow and only interact with my Gmail and Hotmail account, it seems to not occur (or at least not as quickly)  

One possible unique case is that I'm running RAM from two different manufactures and two different sizes (2x 8GB and 2x 4GB).  This doesn't seem to cause issues on any other software.  

Please let me know if I can provide any further information.  Thanks!

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe5d7930bc0 (LWP 22543))]

Thread 25 (Thread 0x7fe4befa4700 (LWP 26711)):
#0  __GI___pthread_getspecific (key=<optimized out>) at pthread_getspecific.c:65
#1  0x00007fe5cdc9f5f0 in g_thread_self () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe5cdc7763d in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe5d4d9c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe5d4d3d64a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe5d4b6541a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe5d4b66bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe5cfb436db in start_thread (arg=0x7fe4befa4700) at pthread_create.c:463
#8  0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7fe494e16700 (LWP 26709)):
#0  0x00007fe5d423d0b4 in __GI___libc_read (fd=84, buf=0x7fe494e157d0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fe5cdcbbcd0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe5cdc77027 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe5cdc774e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe5cdc7764c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe5d4d9c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe5d4d3d64a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe5d4b6541a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe5d4b66bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe5cfb436db in start_thread (arg=0x7fe494e16700) at pthread_create.c:463
#10 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7fe4a6c0f700 (LWP 26673)):
#0  0x00007fe5cfb49ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fe4a6c0e710, expected=0, futex_word=0x7fe4a6c0e8f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fe4a6c0e7b0, mutex=0x7fe4a6c0e8a8, cond=0x7fe4a6c0e8d0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fe4a6c0e8d0, mutex=0x7fe4a6c0e8a8, abstime=0x7fe4a6c0e7b0) at pthread_cond_wait.c:667
#3  0x00007fe5c51a9177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c51a9ada in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c51a9bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c5167851 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c516a387 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c516a974 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe4a6c0f700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7fe47e92d700 (LWP 26672)):
#0  0x00007fe5cfb49ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fe47e92c710, expected=0, futex_word=0x7fe47e92c8f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fe47e92c7b0, mutex=0x7fe47e92c8a8, cond=0x7fe47e92c8d0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fe47e92c8d0, mutex=0x7fe47e92c8a8, abstime=0x7fe47e92c7b0) at pthread_cond_wait.c:667
#3  0x00007fe5c51a9177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c51a9ada in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c51a9bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c5167851 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c516a6b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c516a974 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe47e92d700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7fe473225700 (LWP 26671)):
#0  0x00007fe5cfb49ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fe473224710, expected=0, futex_word=0x7fe4732248f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fe4732247b0, mutex=0x7fe4732248a8, cond=0x7fe4732248d0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fe4732248d0, mutex=0x7fe4732248a8, abstime=0x7fe4732247b0) at pthread_cond_wait.c:667
#3  0x00007fe5c51a9177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c51a9ada in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c51a9bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c5167851 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c516a6b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c516a974 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe473225700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7fe46f296700 (LWP 24230)):
#0  0x00007fe5cfb49ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fe46f295710, expected=0, futex_word=0x7fe46f2958f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fe46f2957b0, mutex=0x7fe46f2958a8, cond=0x7fe46f2958d0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fe46f2958d0, mutex=0x7fe46f2958a8, abstime=0x7fe46f2957b0) at pthread_cond_wait.c:667
#3  0x00007fe5c51a9177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c51a9ada in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c51a9bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c5167851 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c516a6b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c516a974 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe46f296700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7fe486f01700 (LWP 22732)):
#0  0x00007fe5d423d0b4 in __GI___libc_read (fd=130, buf=0x7fe486f007d0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fe5cdcbbcd0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe5cdc77027 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe5cdc774e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe5cdc7764c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe5d4d9c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe5d4d3d64a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe5d4b6541a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe5d4b66bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe5cfb436db in start_thread (arg=0x7fe486f01700) at pthread_create.c:463
#10 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fe4a640e700 (LWP 22587)):
#0  0x00007fe5d4241bf9 in __GI___poll (fds=0x7fe49c008030, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe5cdc77539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe5cdc7764c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe5d4d9c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe5d4d3d64a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe5d4b6541a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe5d4b66bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe5cfb436db in start_thread (arg=0x7fe4a640e700) at pthread_create.c:463
#8  0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7fe4a7aae700 (LWP 22585)):
#0  0x00007fe5d4241bf9 in __GI___poll (fds=0x7fe4a0004a10, nfds=1, timeout=9893) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe5cdc77539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe5cdc7764c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe5d4d9c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe5d4d3d64a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe5d4b6541a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe5d4b66bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe5cfb436db in start_thread (arg=0x7fe4a7aae700) at pthread_create.c:463
#8  0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fe4bdfa2700 (LWP 22570)):
#0  0x00007fe5cfb499f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fe4bdfa1908) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fe4bdfa18b8, cond=0x7fe4bdfa18e0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fe4bdfa18e0, mutex=0x7fe4bdfa18b8) at pthread_cond_wait.c:655
#3  0x00007fe5c51a90a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c51a9ae8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c51a9b7f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c5167868 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c516a6b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c516a9f4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe4bdfa2700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fe4be7a3700 (LWP 22569)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fe5d425f474 in ___fprintf_chk (fp=0x7fe5d451a8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fe5bc7b06a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fe5bc7989ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fe5bc798b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fe5bc79a46c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fe5bc790114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fe5c51af8c4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c514649b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c5178d21 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe4be7a3700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fe53ffff700 (LWP 22567)):
#0  0x00007fe5cfb499f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fe5bded6fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fe5bded6f68, cond=0x7fe5bded6f90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fe5bded6f90, mutex=0x7fe5bded6f68) at pthread_cond_wait.c:655
#3  0x00007fe5bdbe0844 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fe5bdbe0889 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fe5cfb436db in start_thread (arg=0x7fe53ffff700) at pthread_create.c:463
#6  0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fe568f56700 (LWP 22566)):
#0  0x00007fe5d4241bf9 in __GI___poll (fds=0x7fe548007030, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe59c235481 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fe59c226e40 in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fe59c2274d0 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fe59c227560 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fe59c2353c9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fe58c5cd318 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007fe5cfb436db in start_thread (arg=0x7fe568f56700) at pthread_create.c:463
#8  0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fe569ffb700 (LWP 22565)):
#0  0x00007fe5d423d187 in __GI___libc_write (fd=2, buf=0x7fe569ff7c40, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:27
#1  0x00007fe5d41b81bd in _IO_new_file_write (f=0x7fe5d4519680 <_IO_2_1_stderr_>, data=0x7fe569ff7c40, n=39) at fileops.c:1203
#2  0x00007fe5d41b8b2f in new_do_write (to_do=<optimized out>, data=0x7fe569ff7c40 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7fe5d4519680 <_IO_2_1_stderr_>) at fileops.c:457
#3  _IO_new_file_xsputn (f=0x7fe5d4519680 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1277
#4  0x00007fe5d418b707 in buffered_vfprintf (s=s@entry=0x7fe5d4519680 <_IO_2_1_stderr_>, format=format@entry=0x7fe5bc7b06a8 "[%s] %s\n", args=args@entry=0x7fe569ffa200) at vfprintf.c:2350
#5  0x00007fe5d4188726 in _IO_vfprintf_internal (s=s@entry=0x7fe5d4519680 <_IO_2_1_stderr_>, format=0x7fe5bc7b06a8 "[%s] %s\n", ap=ap@entry=0x7fe569ffa200) at vfprintf.c:1301
#6  0x00007fe5d425f4c6 in ___fprintf_chk (fp=0x7fe5d4519680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007fe5bc7989ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007fe5bc798b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007fe5bc79a46c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007fe5bc790114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007fe5c51af789 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fe5c514649b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fe5c5178d21 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007fe5cfb436db in start_thread (arg=0x7fe569ffb700) at pthread_create.c:463
#16 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fe56a7fc700 (LWP 22564)):
#0  _int_free (have_lock=0, p=0x563ede87b6b0, av=0x7fe5d4518c40 <main_arena>) at malloc.c:4244
#1  __GI___libc_free (mem=0x563ede87b6c0) at malloc.c:3124
#2  0x00007fe5d26c4c80 in KIconTheme::~KIconTheme() () from /usr/lib/x86_64-linux-gnu/libKF5IconThemes.so.5
#3  0x00007fe5d26b7ed1 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5IconThemes.so.5
#4  0x00007fe5d26be128 in KIconLoader::~KIconLoader() () from /usr/lib/x86_64-linux-gnu/libKF5IconThemes.so.5
#5  0x00007fe5d26be539 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5IconThemes.so.5
#6  0x00007fe5d4170041 in __run_exit_handlers (status=1, listp=0x7fe5d4518718 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at exit.c:108
#7  0x00007fe5d417013a in __GI_exit (status=<optimized out>) at exit.c:139
#8  0x00007fe5d1537775 in _XDefaultIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#9  0x00007fe5aa47580a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#10 0x00007fe5d153799e in _XIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#11 0x00007fe5d1535a81 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#12 0x00007fe5a21eb418 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#13 0x00007fe5a21e9b73 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#14 0x00007fe5c1abca53 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX.so.0
#15 0x00007fe5c1abdedb in ?? () from /usr/lib/x86_64-linux-gnu/libGLX.so.0
#16 0x00007fe5c582f905 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007fe5c5b6dc31 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#18 0x00007fe5c79a7f9c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#19 0x00007fe5c79a8463 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#20 0x00007fe5c79b3701 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#21 0x00007fe5c79af54f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#22 0x00007fe5c79af711 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#23 0x00007fe5c79afa6b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#24 0x00007fe5c79b0085 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#25 0x00007fe5c5103133 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#26 0x00007fe5c5128c2a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#27 0x00007fe5c51292ef in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#28 0x00007fe5c5129478 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#29 0x00007fe5c5123b11 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#30 0x00007fe5c514649b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#31 0x00007fe5c5178d21 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#32 0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#33 0x00007fe5cfb436db in start_thread (arg=0x7fe56a7fc700) at pthread_create.c:463
#34 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fe56affd700 (LWP 22563)):
#0  0x00007fe5cfb49ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fe56affc700, expected=0, futex_word=0x7fe56affc8e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fe56affc7a0, mutex=0x7fe56affc898, cond=0x7fe56affc8c0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fe56affc8c0, mutex=0x7fe56affc898, abstime=0x7fe56affc7a0) at pthread_cond_wait.c:667
#3  0x00007fe5c51a9177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c51a9ada in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c5123b70 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c514649b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c5178d21 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5cfb436db in start_thread (arg=0x7fe56affd700) at pthread_create.c:463
#10 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fe56b7fe700 (LWP 22562)):
#0  0x00007fe5cfb499f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563ede66f2e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x563ede66f228, cond=0x563ede66f2c0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x563ede66f2c0, mutex=0x563ede66f228) at pthread_cond_wait.c:655
#3  0x00007fe5c51a90a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c5a72b28 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c517a2df in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5cfb436db in start_thread (arg=0x7fe56b7fe700) at pthread_create.c:463
#8  0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fe56bfff700 (LWP 22561)):
#0  0x00007fe5cfb499f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fe56bffe908) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fe56bffe8b8, cond=0x7fe56bffe8e0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fe56bffe8e0, mutex=0x7fe56bffe8b8) at pthread_cond_wait.c:655
#3  0x00007fe5c51a90a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c51a9ae8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c51a9b7f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c5167868 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c516a6b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c516a9b4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe56bfff700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fe58cff9700 (LWP 22560)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fe5d425f474 in ___fprintf_chk (fp=0x7fe5d451a8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fe5bc7b06a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fe5bc7989ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fe5bc798b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fe5bc79a46c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fe5bc790114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fe5c51af789 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c514649b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c4afe754 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c5178e78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fe5cfb436db in start_thread (arg=0x7fe58cff9700) at pthread_create.c:463
#12 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fe58effd700 (LWP 22556)):
#0  0x00007fe5cfb49ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fe58effc710, expected=0, futex_word=0x7fe58effc8f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fe58effc7b0, mutex=0x7fe58effc8a8, cond=0x7fe58effc8d0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fe58effc8d0, mutex=0x7fe58effc8a8, abstime=0x7fe58effc7b0) at pthread_cond_wait.c:667
#3  0x00007fe5c51a9177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fe5c51a9ada in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fe5c51a9bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fe5c5167851 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c516a6b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c516a974 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe58effd700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fe58f7fe700 (LWP 22555)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fe5d425f474 in ___fprintf_chk (fp=0x7fe5d451a8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fe5bc7b06a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fe5bc7989ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fe5bc798b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fe5bc79a46c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fe5bc790114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fe5c51af8c4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c514649b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c516df44 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c5178e78 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fe5cfb436db in start_thread (arg=0x7fe58f7fe700) at pthread_create.c:463
#12 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fe59cd06700 (LWP 22553)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fe5d425f474 in ___fprintf_chk (fp=0x7fe5d451a8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fe5bc7b06a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fe5bc7989ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fe5bc798b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fe5bc79a46c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fe5bc790114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fe5c51af789 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fe5c514649b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fe5c5178d21 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fe5c51abcd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fe5cfb436db in start_thread (arg=0x7fe59cd06700) at pthread_create.c:463
#11 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fe59f9d7700 (LWP 22546)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fe5d4b69319 in QSemaphore::release(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fe5d4d6bdee in QMetaCallEvent::~QMetaCallEvent() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe5d4d6be29 in QMetaCallEvent::~QMetaCallEvent() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe5d4d41e91 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe5d4d9cb23 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe5cdc77387 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fe5cdc775c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fe5cdc7764c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fe5d4d9c13f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fe5d4d3d64a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fe5d4b6541a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fe5d3486015 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007fe5d4b66bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fe5cfb436db in start_thread (arg=0x7fe59f9d7700) at pthread_create.c:463
#15 0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fe5a9781700 (LWP 22545)):
#0  0x00007fe5d4241bf9 in __GI___poll (fds=0x7fe5a97808f8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe5d0172747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fe5d017436a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fe5aa47432a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fe5d4b66bc2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe5cfb436db in start_thread (arg=0x7fe5a9781700) at pthread_create.c:463
#6  0x00007fe5d424e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fe5d7930bc0 (LWP 22543)):
[KCrash Handler]
#6  0x00007fe5d2b69a44 in QWebEngineView::page() const () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#7  0x00007fe5d2b69b61 in QWebEngineView::setHtml(QString const&, QUrl const&) () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#8  0x00007fe4aa7ea51f in MessageViewer::ViewerPrivate::displaySplashPage(QString const&, QHash<QString, QVariant> const&, QByteArray const&) () from /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#9  0x00007fe4aa7ea9b4 in MessageViewer::ViewerPrivate::displaySplashPage(QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#10 0x00007fe4aa7ee653 in MessageViewer::ViewerPrivate::itemFetchResult(KJob*) () from /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#11 0x00007fe5d4d6ef3f in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fe5d64c008c in KJob::result(KJob*, KJob::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#13 0x00007fe5d64c0bc1 in KJob::finishJob(bool) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#14 0x00007fe5d64c0c22 in KJob::kill(KJob::KillVerbosity) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#15 0x00007fe5d3b5a001 in Akonadi::SessionPrivate::clear(bool) () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#16 0x00007fe5d3b5a0bd in Akonadi::Session::~Session() () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#17 0x00007fe5d3b5a0e9 in Akonadi::Session::~Session() () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5
#18 0x00007fe5d4d6c9fb in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fe5d4d764fb in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fe4aa7e77a9 in MessageViewer::ViewerPrivate::~ViewerPrivate() () from /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#21 0x00007fe5d4d6c9fb in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fe5d5b7119c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007fe4aa7dae09 in MessageViewer::Viewer::~Viewer() () from /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#24 0x00007fe5d4d6c9fb in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fe5d5b7119c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007fe4ac363d29 in KMReaderWin::~KMReaderWin() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#27 0x00007fe5d4d6c9fb in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fe5d5b7119c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007fe5d5cd7379 in QSplitter::~QSplitter() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007fe5d4d6c9fb in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fe5d5b7119c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007fe5d5cd7379 in QSplitter::~QSplitter() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007fe4ac39b823 in KMMainWidget::deleteWidgets() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#34 0x00007fe4ac3b5cd1 in KMMainWidget::destruct() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#35 0x00007fe4ac76b7f6 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kmailpart.so
#36 0x00007fe4ac76b959 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kmailpart.so
#37 0x00007fe5d7138e3e in KontactInterface::Plugin::~Plugin() () from /usr/lib/x86_64-linux-gnu/libKF5KontactInterface.so.5
#38 0x00007fe4ae2b4646 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kontact_kmailplugin.so
#39 0x00007fe4ae2b4669 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kontact_kmailplugin.so
#40 0x00007fe5d7363db6 in Kontact::MainWindow::~MainWindow() () from /usr/lib/x86_64-linux-gnu/libkontactprivate.so.5
#41 0x00007fe5d7363fa9 in Kontact::MainWindow::~MainWindow() () from /usr/lib/x86_64-linux-gnu/libkontactprivate.so.5
#42 0x00007fe5d4d6f9b0 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007fe5d5b75f4b in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007fe5d5c7e030 in QMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007fe5d6c90b61 in KMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#46 0x00007fe5d6cd69c5 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#47 0x00007fe5d5b3583c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#48 0x00007fe5d5b3cdd0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007fe5d4d3f328 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x00007fe5d4d41e87 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#51 0x00007fe5d4d9cb23 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#52 0x00007fe5cdc77387 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007fe5cdc775c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007fe5cdc7764c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007fe5d4d9c13f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x00007fe5d4d3d64a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007fe5d4d46800 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#58 0x0000563edd7024c5 in ?? ()
#59 0x00007fe5d414eb97 in __libc_start_main (main=0x563edd7016b0, argc=1, argv=0x7ffdb014ec88, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdb014ec78) at ../csu/libc-start.c:310
#60 0x0000563edd702aea in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 400581, bug 405990.

Possible duplicates by query: bug 405990, bug 404440.

Reported using DrKonqi
Comment 1 afogl001 2019-04-05 14:05:29 UTC 
NOTE: I'm on Kontact version 5.10.1.  I've preformed multiple update attempts but 5.10.3 doesn't seem to be available for my version of Neon.

I noticed this only seems to be an issue with one of my email accounts (KolabNow).  The other two (Gmail and Hotmail) seem to work fine.  

In my akonadi log, I see LOTS of entries similar to this;
  org.kde.pim.akonadiserver: Payload file  "/home/<user>/.local/share/akonadi/file_db_data/26/56126_r67"  could not be open for reading!
  org.kde.pim.akonadiserver: Error:  "No such file or directory"

I can provide full logs if that would help.
Comment 2 afogl001 2019-04-09 14:22:41 UTC 
More interesting logs I noticed, which might be more closely related to the root cause of the problem;

org.kde.pim.akonadiserver: Multiple merge candidates:
org.kde.pim.akonadiserver:      ID: 18950 , RID: "3667" , GID: "" , Collection: "Trash" ( 145 ) , Resource: "akonadi_kolab_resource_2" ( 10 )
org.kde.pim.akonadiserver:      ID: 18984 , RID: "3667" , GID: "" , Collection: "Trash" ( 145 ) , Resource: "akonadi_kolab_resource_2" ( 10 )
org.kde.pim.akonadiserver: Error while handling command CreateItem on connection akonadi_kolab_resource_2 (0x5585e1210a70)
org.kde.pim.akonadicore: Creating/updating items from the akonadi database failed: "Multiple merge candidates, aborting"
org.kde.pim.akonadicore: Error during ItemSync:  "Multiple merge candidates, aborting"
Comment 3 afogl001 2019-04-15 13:07:16 UTC 
I seem to have fixed the issue by recreating my Kolab account as a generic IMAP server instead of the Kolab Groupware (which was setup in a unique way since there's another bug that prevents username/password from being entered when configuring Kolab Groupware via Kmail.  Account was set up in the Notes section of Kontact then updated in Kmail settings)
Comment 4 Christoph Feck 2019-04-19 11:49:39 UTC 

*** This bug has been marked as a duplicate of bug 400581 ***