https://bugs.kde.org/show_bug.cgi?id=406281

            Bug ID: 406281
           Summary: kontact crashes after kmail stops displaying mails and
                    folder contents
           Product: kontact
           Version: 5.10.3
          Platform: openSUSE RPMs
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kdepim-b...@kde.org
          Reporter: aljos...@gmail.com
  Target Milestone: ---

Application: kontact (5.10.3)

Qt Version: 5.12.2
Frameworks Version: 5.56.0
Operating System: Linux 5.0.5-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:
Nothing in particular.  Just clicking on an email, to display it and/or
clicking on an email folder to see its contents.
This happens now and again.  But I cannot reproduce it.

- Unusual behavior I noticed:
When clicking on an email the content of the email is not shown.
If clicking on an email folder to see its contents kmail answers with a message
like "The contents of the folder are being retrieved. Please wait."
Then kontact crashes.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f3ba0068080 (LWP 21871))]

Thread 22 (Thread 0x7f3a9ea55700 (LWP 22338)):
#0  0x00007f3bad4706c4 in read () from /lib64/libc.so.6
#1  0x00007f3baba99880 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f3baba5290f in g_main_context_check () from
/usr/lib64/libglib-2.0.so.0
#3  0x00007f3baba52de0 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f3baba52f5c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#5  0x00007f3bad9c0e7b in QEventDispatcherGlib::processEvents
(this=0x7f3a90000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f3bad96c3cb in QEventLoop::exec (this=this@entry=0x7f3a9ea54b60,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#7  0x00007f3bad7b7016 in QThread::exec (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#8  0x00007f3bad7b8362 in QThreadPrivate::start (arg=0x5602218cc6c0) at
thread/qthread_unix.cpp:361
#9  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#10 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7f3ab62e0700 (LWP 22055)):
#0  0x00007f3bad474ae9 in poll () from /lib64/libc.so.6
#1  0x00007f3baba52e36 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f3baba52f5c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#3  0x00007f3bad9c0e7b in QEventDispatcherGlib::processEvents
(this=0x7f3aa0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f3bad96c3cb in QEventLoop::exec (this=this@entry=0x7f3ab62dfb60,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007f3bad7b7016 in QThread::exec (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007f3bad7b8362 in QThreadPrivate::start (arg=0x56021926bb60) at
thread/qthread_unix.cpp:361
#7  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7f3ab6ffd700 (LWP 22028)):
#0  0x00007f3bad4706c4 in read () from /lib64/libc.so.6
#1  0x00007f3baba99880 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f3baba5290f in g_main_context_check () from
/usr/lib64/libglib-2.0.so.0
#3  0x00007f3baba52de0 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f3baba52f5c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#5  0x00007f3bad9c0e7b in QEventDispatcherGlib::processEvents
(this=0x7f3aac000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f3bad96c3cb in QEventLoop::exec (this=this@entry=0x7f3ab6ffcb60,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#7  0x00007f3bad7b7016 in QThread::exec (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#8  0x00007f3bad7b8362 in QThreadPrivate::start (arg=0x5602192013b0) at
thread/qthread_unix.cpp:361
#9  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#10 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7f3ab77fe700 (LWP 22027)):
#0  0x00007f3bad474ae9 in poll () from /lib64/libc.so.6
#1  0x00007f3baba52e36 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f3baba52f5c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#3  0x00007f3bad9c0e7b in QEventDispatcherGlib::processEvents
(this=0x7f3aa8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f3bad96c3cb in QEventLoop::exec (this=this@entry=0x7f3ab77fdb60,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007f3bad7b7016 in QThread::exec (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007f3bad7b8362 in QThreadPrivate::start (arg=0x560219553770) at
thread/qthread_unix.cpp:361
#7  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7f3ab7fff700 (LWP 22026)):
#0  0x00007f3bad4706c4 in read () from /lib64/libc.so.6
#1  0x00007f3baba99880 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f3baba5290f in g_main_context_check () from
/usr/lib64/libglib-2.0.so.0
#3  0x00007f3baba52de0 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f3baba52f5c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#5  0x00007f3bad9c0e7b in QEventDispatcherGlib::processEvents
(this=0x7f3ab0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f3bad96c3cb in QEventLoop::exec (this=this@entry=0x7f3ab7ffeb60,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#7  0x00007f3bad7b7016 in QThread::exec (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#8  0x00007f3bad7b8362 in QThreadPrivate::start (arg=0x5602195501d0) at
thread/qthread_unix.cpp:361
#9  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#10 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f3ac67fc700 (LWP 21996)):
#0  0x00007f3bac4a603c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3ba5fda719 in base::ConditionVariable::Wait () at
./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#2  0x00007f3ba5fdb148 in base::WaitableEvent::TimedWaitUntil () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#3  0x00007f3ba5fdb1df in base::WaitableEvent::Wait () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#4  0x00007f3ba5f98be8 in
base::internal::SchedulerWorker::Delegate::WaitForWork () at
./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:35
#5  0x00007f3ba5f9b516 in base::internal::SchedulerWorker::RunWorker () at
./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:324
#6  0x00007f3ba5f9b854 in base::internal::SchedulerWorker::RunDedicatedWorker
() at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:248
#7  0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#8  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f3ac6ffd700 (LWP 21995)):
#0  0x00007f3bad48caac in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f3bad3edced in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f3bad3eb138 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f3bad48e68e in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f3ba2c8d6ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#5  0x00007f3ba2c8d8c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#6  0x00007f3ba2c8f230 in ?? () from /usr/lib64/libevent-2.1.so.6
#7  0x00007f3ba2c85068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f3ba5fe0f34 in base::MessagePumpLibevent::Run () at
./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:247
#9  0x00007f3ba5f7779b in base::RunLoop::Run () at
./../../3rdparty/chromium/base/run_loop.cc:102
#10 base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:85
#11 0x00007f3ba5faa1c1 in base::Thread::Run () at
./../../3rdparty/chromium/base/threading/thread.cc:255
#12 base::Thread::ThreadMain () at
./../../3rdparty/chromium/base/threading/thread.cc:337
#13 0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#14 0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#15 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f3b47fff700 (LWP 21937)):
#0  0x00007f3bac4a603c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3ba30da1da in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007f3ba30da1fb in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#4  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f3b6cff9700 (LWP 21922)):
#0  0x00007f3bad470767 in write () from /lib64/libc.so.6
#1  0x00007f3bad4011cd in _IO_file_write@@GLIBC_2.2.5 () from /lib64/libc.so.6
#2  0x00007f3bad40056f in new_do_write () from /lib64/libc.so.6
#3  0x00007f3bad4018fe in __GI__IO_file_xsputn () from /lib64/libc.so.6
#4  0x00007f3bad3edd4a in buffered_vfprintf () from /lib64/libc.so.6
#5  0x00007f3bad3eb138 in __vfprintf_internal () from /lib64/libc.so.6
#6  0x00007f3bad48e68e in __fprintf_chk () from /lib64/libc.so.6
#7  0x00007f3ba2c8d6ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f3ba2c8d8c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#9  0x00007f3ba2c8f230 in ?? () from /usr/lib64/libevent-2.1.so.6
#10 0x00007f3ba2c85068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#11 0x00007f3ba5fe0e4d in base::MessagePumpLibevent::Run () at
./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:237
#12 0x00007f3ba5f7779b in base::RunLoop::Run () at
./../../3rdparty/chromium/base/run_loop.cc:102
#13 base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:85
#14 0x00007f3ba5faa1c1 in base::Thread::Run () at
./../../3rdparty/chromium/base/threading/thread.cc:255
#15 base::Thread::ThreadMain () at
./../../3rdparty/chromium/base/threading/thread.cc:337
#16 0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#17 0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#18 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f3b6d7fa700 (LWP 21921)):
#0  0x00007f3bac4a6428 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3ba5fda7e7 in base::ConditionVariable::TimedWait () at
./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#2  0x00007f3ba5fdb13a in base::WaitableEvent::TimedWaitUntil () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#3  0x00007f3ba5f548b0 in base::MessagePumpDefault::Run () at
./../../3rdparty/chromium/base/message_loop/message_pump_default.cc:63
#4  0x00007f3ba5f7779b in base::RunLoop::Run () at
./../../3rdparty/chromium/base/run_loop.cc:102
#5  base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:85
#6  0x00007f3ba5faa1c1 in base::Thread::Run () at
./../../3rdparty/chromium/base/threading/thread.cc:255
#7  base::Thread::ThreadMain () at
./../../3rdparty/chromium/base/threading/thread.cc:337
#8  0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#9  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#10 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f3b6dffb700 (LWP 21920)):
#0  0x00007f3bac4a6428 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3ba5fda7e7 in base::ConditionVariable::TimedWait () at
./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#2  0x00007f3ba5fdb13a in base::WaitableEvent::TimedWaitUntil () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#3  0x00007f3ba5f548b0 in base::MessagePumpDefault::Run () at
./../../3rdparty/chromium/base/message_loop/message_pump_default.cc:63
#4  0x00007f3ba5f7779b in base::RunLoop::Run () at
./../../3rdparty/chromium/base/run_loop.cc:102
#5  base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:85
#6  0x00007f3ba5faa1c1 in base::Thread::Run () at
./../../3rdparty/chromium/base/threading/thread.cc:255
#7  base::Thread::ThreadMain () at
./../../3rdparty/chromium/base/threading/thread.cc:337
#8  0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#9  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#10 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f3b6e7fc700 (LWP 21919)):
#0  0x00007f3bac4a603c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3ba5fda719 in base::ConditionVariable::Wait () at
./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#2  0x00007f3ba68a8388 in cc::SingleThreadTaskGraphRunner::Run () at
./../../3rdparty/chromium/cc/raster/single_thread_task_graph_runner.cc:123
#3  0x00007f3ba5fab77f in base::SimpleThread::ThreadMain () at
./../../3rdparty/chromium/base/threading/simple_thread.cc:81
#4  0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#5  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#6  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f3b6effd700 (LWP 21917)):
#0  0x00007f3bac4a603c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3ba5fda719 in base::ConditionVariable::Wait () at
./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#2  0x00007f3ba5fdb148 in base::WaitableEvent::TimedWaitUntil () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#3  0x00007f3ba5fdb1df in base::WaitableEvent::Wait () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#4  0x00007f3ba5f98be8 in
base::internal::SchedulerWorker::Delegate::WaitForWork () at
./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:35
#5  0x00007f3ba5f9b516 in base::internal::SchedulerWorker::RunWorker () at
./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:324
#6  0x00007f3ba5f9b814 in base::internal::SchedulerWorker::RunSharedWorker ()
at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:236
#7  0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#8  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f3b6f7fe700 (LWP 21916)):
#0  0x00007f3bad48caac in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f3bad3edced in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f3bad3eb138 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f3bad48e68e in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f3ba2c8d6ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#5  0x00007f3ba2c8d8c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#6  0x00007f3ba2c8f230 in ?? () from /usr/lib64/libevent-2.1.so.6
#7  0x00007f3ba2c85068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f3ba5fe0df9 in base::MessagePumpLibevent::Run () at
./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:214
#9  0x00007f3ba5f7779b in base::RunLoop::Run () at
./../../3rdparty/chromium/base/run_loop.cc:102
#10 base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:85
#11 0x00007f3ba592dd34 in content::BrowserProcessSubThread::IOThreadRun () at
../../3rdparty/chromium/content/browser/browser_process_sub_thread.cc:178
#12 0x00007f3ba5faa318 in base::Thread::ThreadMain () at
./../../3rdparty/chromium/base/threading/thread.cc:337
#13 0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#14 0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#15 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f3b6ffff700 (LWP 21915)):
#0  0x00007f3bac4a6428 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3ba5fda7e7 in base::ConditionVariable::TimedWait () at
./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#2  0x00007f3ba5fdb13a in base::WaitableEvent::TimedWaitUntil () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#3  0x00007f3ba5fdb222 in base::WaitableEvent::TimedWait () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#4  0x00007f3ba5f98bd1 in
base::internal::SchedulerWorker::Delegate::WaitForWork () at
./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:37
#5  0x00007f3ba5f9b516 in base::internal::SchedulerWorker::RunWorker () at
./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:324
#6  0x00007f3ba5f9b7d4 in base::internal::SchedulerWorker::RunPooledWorker ()
at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:224
#7  0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#8  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f3b85ffb700 (LWP 21912)):
#0  0x00007f3bac4a6428 in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3ba5fda7e7 in base::ConditionVariable::TimedWait () at
./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#2  0x00007f3ba5fdb13a in base::WaitableEvent::TimedWaitUntil () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#3  0x00007f3ba5fdb222 in base::WaitableEvent::TimedWait () at
./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#4  0x00007f3ba5f98bd1 in
base::internal::SchedulerWorker::Delegate::WaitForWork () at
./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:37
#5  0x00007f3ba5f9b516 in base::internal::SchedulerWorker::RunWorker () at
./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:324
#6  0x00007f3ba5f9b7d4 in base::internal::SchedulerWorker::RunPooledWorker ()
at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:224
#7  0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#8  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f3b867fc700 (LWP 21911)):
#0  0x00007f3bad48caac in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f3bad3edced in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f3bad3eb138 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f3bad48e68e in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f3ba2c8d6ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#5  0x00007f3ba2c8d8c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#6  0x00007f3ba2c8f230 in ?? () from /usr/lib64/libevent-2.1.so.6
#7  0x00007f3ba2c85068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f3ba5fe0df9 in base::MessagePumpLibevent::Run () at
./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:214
#9  0x00007f3ba5f7779b in base::RunLoop::Run () at
./../../3rdparty/chromium/base/run_loop.cc:102
#10 base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:85
#11 0x00007f3ba5f9f2c4 in base::internal::ServiceThread::Run () at
./../../3rdparty/chromium/base/task_scheduler/service_thread.cc:60
#12 0x00007f3ba5faa318 in base::Thread::ThreadMain () at
./../../3rdparty/chromium/base/threading/thread.cc:337
#13 0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#14 0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#15 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f3b877fe700 (LWP 21909)):
#0  0x00007f3bad48caac in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f3bad3edced in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f3bad3eb138 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f3bad48e68e in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f3ba2c8d6ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#5  0x00007f3ba2c8d8c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#6  0x00007f3ba2c8f230 in ?? () from /usr/lib64/libevent-2.1.so.6
#7  0x00007f3ba2c85068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f3ba5fe0df9 in base::MessagePumpLibevent::Run () at
./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:214
#9  0x00007f3ba5f7779b in base::RunLoop::Run () at
./../../3rdparty/chromium/base/run_loop.cc:102
#10 base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:85
#11 0x00007f3ba5faa1c1 in base::Thread::Run () at
./../../3rdparty/chromium/base/threading/thread.cc:255
#12 base::Thread::ThreadMain () at
./../../3rdparty/chromium/base/threading/thread.cc:337
#13 0x00007f3ba5fdd341 in ThreadFunc () at
./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:76
#14 0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#15 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f3b96739700 (LWP 21878)):
#0  0x00007f3baba4fce7 in ?? () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f3baba522a3 in g_main_context_prepare () from
/usr/lib64/libglib-2.0.so.0
#2  0x00007f3baba52d6b in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f3baba52f5c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#4  0x00007f3bad9c0e7b in QEventDispatcherGlib::processEvents
(this=0x7f3b88000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f3bad96c3cb in QEventLoop::exec (this=this@entry=0x7f3b96738b30,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007f3bad7b7016 in QThread::exec (this=this@entry=0x7f3bacefed80
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007f3bace7e565 in QDBusConnectionManager::run (this=0x7f3bacefed80
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
qdbusconnection.cpp:178
#8  0x00007f3bad7b8362 in QThreadPrivate::start (arg=0x7f3bacefed80 <(anonymous
namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
thread/qthread_unix.cpp:361
#9  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#10 0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f3b97fff700 (LWP 21877)):
#0  0x00007f3bac4a603c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1  0x00007f3b9c92a483 in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f3b9c92a1d7 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#4  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f3b9e0cf700 (LWP 21876)):
#0  0x00007f3bad474ae9 in poll () from /lib64/libc.so.6
#1  0x00007f3bac4cccc7 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f3bac4ce8fa in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f3b9e250788 in QXcbEventQueue::run (this=0x5602188795e0) at
qxcbeventqueue.cpp:228
#4  0x00007f3bad7b8362 in QThreadPrivate::start (arg=0x5602188795e0) at
thread/qthread_unix.cpp:361
#5  0x00007f3bac49ffab in start_thread () from /lib64/libpthread.so.0
#6  0x00007f3bad47f6af in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f3ba0068080 (LWP 21871)):
[KCrash Handler]
#6  0x00007f3bacd49e24 in qGetPtrHelper<QScopedPointer<QWebEngineViewPrivate,
QScopedPointerDeleter<QWebEngineViewPrivate> > > (ptr=...) at
/usr/include/qt5/QtCore/qglobal.h:1038
#7  QWebEngineView::d_func (this=this@entry=0x0) at api/qwebengineview.h:138
#8  QWebEngineView::page (this=this@entry=0x0) at api/qwebengineview.cpp:175
#9  0x00007f3bacd49f41 in QWebEngineView::setHtml (this=this@entry=0x0,
html=..., baseUrl=...) at api/qwebengineview.cpp:206
#10 0x00007f3ac4a007cf in MessageViewer::ViewerPrivate::displaySplashPage
(this=0x56021917abd0, templateName=..., data=..., domain=...) at
/usr/include/qt5/QtCore/qchar.h:88
#11 0x00007f3ac4a00c1f in MessageViewer::ViewerPrivate::displaySplashPage
(this=0x56021917abd0, message=...) at
/usr/src/debug/messagelib-18.12.3-1.1.x86_64/messageviewer/src/viewer/viewer_p.cpp:802
#12 0x00007f3ac4a02f03 in MessageViewer::ViewerPrivate::itemFetchResult
(this=0x56021917abd0, job=<optimized out>) at
/usr/include/qt5/QtCore/qchar.h:88
#13 0x00007f3bad997343 in QtPrivate::QSlotObjectBase::call (a=0x7fffb8f04430,
r=0x56021dc02280, this=0x56021dc46400) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
#14 QMetaObject::activate (sender=0x56021dc02280, signalOffset=<optimized out>,
local_signal_index=<optimized out>, argv=<optimized out>) at
kernel/qobject.cpp:3774
#15 0x00007f3bae8f6d9c in KJob::result (this=this@entry=0x56021dc02280,
_t1=<optimized out>, _t1@entry=0x56021dc02280, _t2=...) at
/usr/src/debug/kcoreaddons-5.56.0-1.1.x86_64/build/src/lib/KF5CoreAddons_autogen/include/moc_kjob.cpp:573
#16 0x00007f3bae8f7863 in KJob::finishJob (this=0x56021dc02280,
emitResult=<optimized out>) at
/usr/src/debug/kcoreaddons-5.56.0-1.1.x86_64/src/lib/jobs/kjob.cpp:109
#17 0x00007f3bae8f78cc in KJob::kill (verbosity=KJob::EmitResult,
this=0x56021dc02280) at
/usr/src/debug/kcoreaddons-5.56.0-1.1.x86_64/src/lib/jobs/kjob.cpp:122
#18 KJob::kill (this=0x56021dc02280,
verbosity=verbosity@entry=KJob::EmitResult) at
/usr/src/debug/kcoreaddons-5.56.0-1.1.x86_64/src/lib/jobs/kjob.cpp:117
#19 0x00007f3bad17d4c5 in Akonadi::SessionPrivate::clear (this=0x5602192696c0,
forceReconnect=forceReconnect@entry=false) at
/usr/src/debug/akonadi-server-18.12.3-1.2.x86_64/src/core/session.cpp:440
#20 0x00007f3bad17d50d in Akonadi::Session::~Session (this=0x56021926ba20,
__in_chrg=<optimized out>) at
/usr/src/debug/akonadi-server-18.12.3-1.2.x86_64/src/core/session.cpp:382
#21 0x00007f3bad17d539 in Akonadi::Session::~Session (this=0x56021926ba20,
__in_chrg=<optimized out>) at
/usr/src/debug/akonadi-server-18.12.3-1.2.x86_64/src/core/session.cpp:380
#22 0x00007f3bad99515b in QObjectPrivate::deleteChildren
(this=this@entry=0x560218dcc400) at kernel/qobject.cpp:2010
#23 0x00007f3bad99ddd4 in QObject::~QObject (this=<optimized out>,
__in_chrg=<optimized out>) at kernel/qobject.cpp:1032
#24 0x00007f3ac49fdc79 in MessageViewer::ViewerPrivate::~ViewerPrivate
(this=0x56021917abd0, __in_chrg=<optimized out>) at
/usr/src/debug/messagelib-18.12.3-1.1.x86_64/messageviewer/src/viewer/viewer_p.cpp:256
#25 0x00007f3bad99515b in QObjectPrivate::deleteChildren
(this=this@entry=0x560218dda9d0) at kernel/qobject.cpp:2010
#26 0x00007f3bae39c466 in QWidget::~QWidget (this=0x560218dda7f0,
__in_chrg=<optimized out>) at kernel/qwidget.cpp:1703
#27 0x00007f3ac49f1a99 in MessageViewer::Viewer::~Viewer (this=0x560218dda7f0,
__in_chrg=<optimized out>) at
/usr/src/debug/messagelib-18.12.3-1.1.x86_64/messageviewer/src/viewer/viewer.cpp:84
#28 0x00007f3bad99515b in QObjectPrivate::deleteChildren
(this=this@entry=0x5602190be200) at kernel/qobject.cpp:2010
#29 0x00007f3bae39c466 in QWidget::~QWidget (this=0x5602190be130,
__in_chrg=<optimized out>) at kernel/qwidget.cpp:1703
#30 0x00007f3ac51ffca9 in KMReaderWin::~KMReaderWin (this=0x5602190be130,
__in_chrg=<optimized out>) at
/usr/src/debug/kmail-18.12.3-1.1.x86_64/src/kmreaderwin.cpp:227
#31 0x00007f3bad99515b in QObjectPrivate::deleteChildren
(this=this@entry=0x560218cd35b0) at kernel/qobject.cpp:2010
#32 0x00007f3bae39c466 in QWidget::~QWidget (this=0x560218dda4b0,
__in_chrg=<optimized out>) at kernel/qwidget.cpp:1703
#33 0x00007f3bae500729 in QSplitter::~QSplitter (this=0x560218dda4b0,
__in_chrg=<optimized out>) at widgets/qsplitter.cpp:973
#34 0x00007f3bad99515b in QObjectPrivate::deleteChildren
(this=this@entry=0x5602196192f0) at kernel/qobject.cpp:2010
#35 0x00007f3bae39c466 in QWidget::~QWidget (this=0x560218dd66d0,
__in_chrg=<optimized out>) at kernel/qwidget.cpp:1703
#36 0x00007f3bae500729 in QSplitter::~QSplitter (this=0x560218dd66d0,
__in_chrg=<optimized out>) at widgets/qsplitter.cpp:973
#37 0x00007f3ac52375a3 in KMMainWidget::deleteWidgets
(this=this@entry=0x560218f4e270) at
/usr/src/debug/kmail-18.12.3-1.1.x86_64/src/kmmainwidget.cpp:975
#38 0x00007f3ac524f768 in KMMainWidget::destruct (this=0x560218f4e270) at
/usr/src/debug/kmail-18.12.3-1.1.x86_64/src/kmmainwidget.cpp:385
#39 KMMainWidget::destruct (this=0x560218f4e270) at
/usr/src/debug/kmail-18.12.3-1.1.x86_64/src/kmmainwidget.cpp:374
#40 0x00007f3ac5445d06 in KMailPart::~KMailPart (this=0x560218f14610,
__in_chrg=<optimized out>, __vtt_parm=<optimized out>) at
/usr/src/debug/kmail-18.12.3-1.1.x86_64/src/kmail_part.cpp:111
#41 0x00007f3ac5445e59 in KMailPart::~KMailPart (this=0x560218f14610,
__in_chrg=<optimized out>, __vtt_parm=<optimized out>) at
/usr/src/debug/kmail-18.12.3-1.1.x86_64/src/kmail_part.cpp:106
#42 0x00007f3baeb8501e in KontactInterface::Plugin::~Plugin
(this=0x5602191af0d0, __vtt_parm=<optimized out>, __in_chrg=<optimized out>) at
/usr/src/debug/kontactinterface-18.12.3-1.1.x86_64/src/plugin.cpp:89
#43 0x00007f3ac57ffcd6 in KMailPlugin::~KMailPlugin (this=0x5602191af0d0,
__in_chrg=<optimized out>, __vtt_parm=<optimized out>) at
/usr/src/debug/kmail-18.12.3-1.1.x86_64/src/kontactplugin/kmail/kmail_plugin.cpp:175
#44 0x00007f3ac57ffcf9 in KMailPlugin::~KMailPlugin (this=0x5602191af0d0,
__in_chrg=<optimized out>, __vtt_parm=<optimized out>) at
/usr/src/debug/kmail-18.12.3-1.1.x86_64/src/kontactplugin/kmail/kmail_plugin.cpp:172
#45 0x00007f3baebb37b6 in Kontact::MainWindow::~MainWindow
(this=this@entry=0x560218c81130, __in_chrg=<optimized out>,
__vtt_parm=<optimized out>) at /usr/include/qt5/QtCore/qlist.h:299
#46 0x00007f3baebb3c19 in Kontact::MainWindow::~MainWindow
(this=0x560218c81130, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at
/usr/src/debug/kontact-18.12.3-1.1.x86_64/src/mainwindow.cpp:272
#47 0x00007f3bad997aa0 in QObject::event (this=this@entry=0x560218c81130,
e=e@entry=0x560221b67f90) at kernel/qobject.cpp:1251
#48 0x00007f3bae3a0fcb in QWidget::event (this=this@entry=0x560218c81130,
event=event@entry=0x560221b67f90) at kernel/qwidget.cpp:9383
#49 0x00007f3bae4a8cb4 in QMainWindow::event (this=this@entry=0x560218c81130,
event=event@entry=0x560221b67f90) at widgets/qmainwindow.cpp:1339
#50 0x00007f3baead133b in KMainWindow::event (this=this@entry=0x560218c81130,
ev=ev@entry=0x560221b67f90) at
/usr/src/debug/kxmlgui-5.56.0-1.1.x86_64/src/kmainwindow.cpp:877
#51 0x00007f3baeb1bf05 in KXmlGuiWindow::event (this=0x560218c81130,
ev=0x560221b67f90) at
/usr/src/debug/kxmlgui-5.56.0-1.1.x86_64/src/kxmlguiwindow.cpp:125
#52 0x00007f3bae361551 in QApplicationPrivate::notify_helper
(this=this@entry=0x560218858650, receiver=receiver@entry=0x560218c81130,
e=e@entry=0x560221b67f90) at kernel/qapplication.cpp:3737
#53 0x00007f3bae368930 in QApplication::notify (this=0x7fffb8f052c0,
receiver=0x560218c81130, e=0x560221b67f90) at kernel/qapplication.cpp:3484
#54 0x00007f3bad96d6f9 in QCoreApplication::notifyInternal2
(receiver=0x560218c81130, event=0x560221b67f90) at
../../include/QtCore/5.12.2/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#55 0x00007f3bad970747 in QCoreApplicationPrivate::sendPostedEvents
(receiver=0x0, event_type=0, data=0x5602187f1210) at
kernel/qcoreapplication.cpp:1799
#56 0x00007f3bad9c1853 in postEventSourceDispatch (s=0x560218923000) at
kernel/qeventdispatcher_glib.cpp:276
#57 0x00007f3baba52c2e in g_main_context_dispatch () from
/usr/lib64/libglib-2.0.so.0
#58 0x00007f3baba52ec8 in ?? () from /usr/lib64/libglib-2.0.so.0
#59 0x00007f3baba52f5c in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#60 0x00007f3bad9c0e63 in QEventDispatcherGlib::processEvents
(this=0x560218924080, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#61 0x00007f3bad96c3cb in QEventLoop::exec (this=this@entry=0x7fffb8f05190,
flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#62 0x00007f3bad974402 in QCoreApplication::exec () at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#63 0x00005602176f6738 in main (argc=<optimized out>, argv=<optimized out>) at
/usr/src/debug/kontact-18.12.3-1.1.x86_64/src/main.cpp:229
[Inferior 1 (process 21871) detached]

Possible duplicates by query: bug 406185, bug 405990, bug 404440.

Reported using DrKonqi

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