https://bugs.kde.org/show_bug.cgi?id=373129

            Bug ID: 373129
           Summary: Kontact crashed when closing after tryong to accept an
                    ics invitation
           Product: kontact
           Version: 5.2.3
          Platform: Debian testing
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs@kde.org
          Reporter: quaz...@posteo.de
  Target Milestone: ---

Application: kontact (5.2.3)

Qt Version: 5.7.1
Frameworks Version: 5.27.0
Operating System: Linux 4.7.0-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (stretch)

-- Information about the crash:
- What I was doing when the application crashed:
I received an ics invitation via KMail and clicked on the "Accept" button in
the mail window. Nothing seemd to happen, so I switched to the calendar tab,
but the event had not appeared there. After that I switched back to the KMail
tab, then closed Kontact to restart Akonadi (this sometimes helped with other
problems before). Upon closing Kontact, I received the KDE crash report.

When trying again (after restarting Akonadi), accepting the ics event worked on
the second attempt.

-- 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 0x7f3fcaffd940 (LWP 20989))]

Thread 17 (Thread 0x7f3efe876700 (LWP 21691)):
#0  0x00007fff9aff6c33 in clock_gettime ()
#1  0x00007f3fe174b886 in __GI___clock_gettime (clock_id=clock_id@entry=1,
tp=tp@entry=0x7f3efe8759e0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f3fe20e0001 in qt_gettime() (ts=0x7f3efe8759e0, clock=<optimized
out>) at tools/qelapsedtimer_unix.cpp:109
#3  0x00007f3fe20e0001 in qt_gettime() (frac=<synthetic pointer>,
sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:164
#4  0x00007f3fe20e0001 in qt_gettime() () at tools/qelapsedtimer_unix.cpp:173
#5  0x00007f3fe2268379 in QTimerInfoList::updateCurrentTime()
(this=this@entry=0x7f3ef4002cd0) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007f3fe2268925 in QTimerInfoList::timerWait(timespec&)
(this=0x7f3ef4002cd0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007f3fe2269cce in timerSourcePrepare(GSource*, gint*)
(timeout=0x7f3efe875ab4, src=<optimized out>) at
kernel/qeventdispatcher_glib.cpp:132
#8  0x00007f3fe2269cce in timerSourcePrepare(GSource*, gint*)
(source=<optimized out>, timeout=timeout@entry=0x7f3efe875ab4) at
kernel/qeventdispatcher_glib.cpp:165
#9  0x00007f3fd9a27edd in g_main_context_prepare
(context=context@entry=0x7f3ef40009b0, priority=priority@entry=0x7f3efe875b40)
at ././glib/gmain.c:3501
#10 0x00007f3fd9a2891b in g_main_context_iterate
(context=context@entry=0x7f3ef40009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3909
#11 0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3ef40009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#12 0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3ef40008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3efe875c80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#14 0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#15 0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a499096370) at
thread/qthread_unix.cpp:368
#16 0x00007f3fdb697464 in start_thread (arg=0x7f3efe876700) at
pthread_create.c:333
#17 0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7f3eff077700 (LWP 21689)):
#0  0x00007f3fdb69ff9c in __lll_lock_wait () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f3fdb699c36 in __GI___pthread_mutex_lock (mutex=0x7f3fdaeec2b0) at
../nptl/pthread_mutex_lock.c:115
#2  0x00007f3fdac6881c in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#3  0x00007f3fdac6d741 in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#4  0x00007f3fdac6dc58 in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#5  0x00007f3fd2ba9102 in  () at
/usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.367.57
#6  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (__nbytes=16,
__buf=0x7f3eff076a60, __fd=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/unistd.h:44
#7  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (wakeup=0x7f3ef8002730) at
././glib/gwakeup.c:210
#8  0x00007f3fd9a284be in g_main_context_check
(context=context@entry=0x7f3ef00009b0, max_priority=2147483647,
fds=fds@entry=0x7f3ef00013c0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#9  0x00007f3fd9a28994 in g_main_context_iterate
(context=context@entry=0x7f3ef00009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#10 0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3ef00009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#11 0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3ef00008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3eff076c80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#13 0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#14 0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a4993ee390) at
thread/qthread_unix.cpp:368
#15 0x00007f3fdb697464 in start_thread (arg=0x7f3eff077700) at
pthread_create.c:333
#16 0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7f3eff878700 (LWP 21687)):
#0  0x00007f3fd9a6e004 in g_mutex_unlock (mutex=0x7f3ef80009b0) at
././glib/gthread-posix.c:1348
#1  0x00007f3fd9a283f1 in g_main_context_check
(context=context@entry=0x7f3ef80009b0, max_priority=2147483647,
fds=fds@entry=0x7f3ef80013c0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3760
#2  0x00007f3fd9a28994 in g_main_context_iterate
(context=context@entry=0x7f3ef80009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#3  0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3ef80009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3ef80008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3eff877c80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#6  0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#7  0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a498fed080) at
thread/qthread_unix.cpp:368
#8  0x00007f3fdb697464 in start_thread (arg=0x7f3eff878700) at
pthread_create.c:333
#9  0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7f3f15ffb700 (LWP 21190)):
#0  0x00007f3fd9a6dfe9 in g_mutex_lock (mutex=mutex@entry=0x7f3f040009b0) at
././glib/gthread-posix.c:1336
#1  0x00007f3fd9a27a04 in g_main_context_release (context=0x7f3f040009b0) at
././glib/gmain.c:3303
#2  0x00007f3fd9a289aa in g_main_context_iterate
(context=context@entry=0x7f3f040009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3931
#3  0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3f040009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#4  0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3f040008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3f15ffac80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#6  0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#7  0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a499132560) at
thread/qthread_unix.cpp:368
#8  0x00007f3fdb697464 in start_thread (arg=0x7f3f15ffb700) at
pthread_create.c:333
#9  0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f3f167fc700 (LWP 21181)):
#0  0x00007f3fdb69ff9c in __lll_lock_wait () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f3fdb699c36 in __GI___pthread_mutex_lock (mutex=0x7f3fdaeec2b0) at
../nptl/pthread_mutex_lock.c:115
#2  0x00007f3fdac6881c in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#3  0x00007f3fdac6d741 in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#4  0x00007f3fdac6dc58 in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#5  0x00007f3fd2ba9102 in  () at
/usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.367.57
#6  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (__nbytes=16,
__buf=0x7f3f167fba60, __fd=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/unistd.h:44
#7  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (wakeup=0x7f3f0c002780) at
././glib/gwakeup.c:210
#8  0x00007f3fd9a284be in g_main_context_check
(context=context@entry=0x7f3f000009b0, max_priority=2147483647,
fds=fds@entry=0x7f3f000013c0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#9  0x00007f3fd9a28994 in g_main_context_iterate
(context=context@entry=0x7f3f000009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#10 0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3f000009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#11 0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3f000008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3f167fbc80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#13 0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#14 0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a498dd1b50) at
thread/qthread_unix.cpp:368
#15 0x00007f3fdb697464 in start_thread (arg=0x7f3f167fc700) at
pthread_create.c:333
#16 0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f3f263d0700 (LWP 21089)):
#0  0x00007f3fe17315dd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3fd2ba9073 in  () at
/usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.367.57
#2  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (__nbytes=16,
__buf=0x7f3f263cfa60, __fd=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (wakeup=0x7f3f180021c0) at
././glib/gwakeup.c:210
#4  0x00007f3fd9a284be in g_main_context_check
(context=context@entry=0x7f3f1c0009b0, max_priority=2147483647,
fds=fds@entry=0x7f3f1c0013c0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#5  0x00007f3fd9a28994 in g_main_context_iterate
(context=context@entry=0x7f3f1c0009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#6  0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3f1c0009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#7  0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3f1c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3f263cfc80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#9  0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#10 0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a498996f60) at
thread/qthread_unix.cpp:368
#11 0x00007f3fdb697464 in start_thread (arg=0x7f3f263d0700) at
pthread_create.c:333
#12 0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f3f3ffff700 (LWP 21075)):
#0  0x00007f3fe17315dd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3fd2ba9073 in  () at
/usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.367.57
#2  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (__nbytes=16,
__buf=0x7f3f3fffea60, __fd=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (wakeup=0x7f3f44002360) at
././glib/gwakeup.c:210
#4  0x00007f3fd9a284be in g_main_context_check
(context=context@entry=0x7f3f380009b0, max_priority=2147483647,
fds=fds@entry=0x7f3f380013c0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#5  0x00007f3fd9a28994 in g_main_context_iterate
(context=context@entry=0x7f3f380009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#6  0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3f380009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#7  0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3f380008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3f3fffec80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#9  0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#10 0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a4986114b0) at
thread/qthread_unix.cpp:368
#11 0x00007f3fdb697464 in start_thread (arg=0x7f3f3ffff700) at
pthread_create.c:333
#12 0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f3f4d6fd700 (LWP 21050)):
#0  0x00007f3fdb69ff9c in __lll_lock_wait () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f3fdb699c36 in __GI___pthread_mutex_lock (mutex=0x7f3fdaeec2b0) at
../nptl/pthread_mutex_lock.c:115
#2  0x00007f3fdac6881c in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#3  0x00007f3fdac6d741 in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#4  0x00007f3fdac6dbfb in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#5  0x00007f3fd2ba90f1 in  () at
/usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.367.57
#6  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (__nbytes=16,
__buf=0x7f3f4d6fca60, __fd=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/unistd.h:44
#7  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (wakeup=0x7f3f48002780) at
././glib/gwakeup.c:210
#8  0x00007f3fd9a284be in g_main_context_check
(context=context@entry=0x7f3f400009b0, max_priority=2147483647,
fds=fds@entry=0x7f3f400013c0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#9  0x00007f3fd9a28994 in g_main_context_iterate
(context=context@entry=0x7f3f400009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#10 0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3f400009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#11 0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3f400008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3f4d6fcc80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#13 0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#14 0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a498643860) at
thread/qthread_unix.cpp:368
#15 0x00007f3fdb697464 in start_thread (arg=0x7f3f4d6fd700) at
pthread_create.c:333
#16 0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f3f667fa700 (LWP 21017)):
#0  0x00007f3fdb69d18f in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3fdf411223 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3fdf739191 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3fdb697464 in start_thread (arg=0x7f3f667fa700) at
pthread_create.c:333
#4  0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f3f66ffb700 (LWP 21016)):
#0  0x00007f3fdb69d18f in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3fdf411223 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3fdf739191 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3fdb697464 in start_thread (arg=0x7f3f66ffb700) at
pthread_create.c:333
#4  0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f3f677fc700 (LWP 21015)):
#0  0x00007f3fdb69d18f in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3fdf411223 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3fdf739191 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3fdb697464 in start_thread (arg=0x7f3f677fc700) at
pthread_create.c:333
#4  0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f3f67ffd700 (LWP 21014)):
#0  0x00007f3fdb69d18f in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3fdf410101 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3fdf739191 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3fdb697464 in start_thread (arg=0x7f3f67ffd700) at
pthread_create.c:333
#4  0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f3fb5948700 (LWP 21013)):
#0  0x00007f3fdb69ff9c in __lll_lock_wait () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f3fdb699c36 in __GI___pthread_mutex_lock (mutex=0x7f3fdaeec2b0) at
../nptl/pthread_mutex_lock.c:115
#2  0x00007f3fdac6881c in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#3  0x00007f3fdac6d741 in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#4  0x00007f3fdac6dbfb in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#5  0x00007f3fd2ba90f1 in  () at
/usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.367.57
#6  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (__nbytes=16,
__buf=0x7f3fb5947a60, __fd=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/unistd.h:44
#7  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (wakeup=0x7f3fb00025a0) at
././glib/gwakeup.c:210
#8  0x00007f3fd9a284be in g_main_context_check
(context=context@entry=0x7f3fac0009b0, max_priority=2147483647,
fds=fds@entry=0x7f3fac0013c0, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#9  0x00007f3fd9a28994 in g_main_context_iterate
(context=context@entry=0x7f3fac0009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#10 0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3fac0009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#11 0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3fac0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3fb5947c80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#13 0x00007f3fe20360d3 in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:507
#14 0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a4983d1230) at
thread/qthread_unix.cpp:368
#15 0x00007f3fdb697464 in start_thread (arg=0x7f3fb5948700) at
pthread_create.c:333
#16 0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f3fb62a9700 (LWP 20992)):
#0  0x00007f3fdb69d18f in pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3fdf70846b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f3fdf7084a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f3fdb697464 in start_thread (arg=0x7f3fb62a9700) at
pthread_create.c:333
#4  0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f3fb74ba700 (LWP 20991)):
#0  0x00007f3fdb69ff9c in __lll_lock_wait () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f3fdb699c36 in __GI___pthread_mutex_lock (mutex=0x7f3fdaeec2b0) at
../nptl/pthread_mutex_lock.c:115
#2  0x00007f3fdac6881c in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#3  0x00007f3fdac6d741 in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#4  0x00007f3fdac6dbfb in  () at /usr/lib/x86_64-linux-gnu/libGL.so.1
#5  0x00007f3fd2ba90f1 in  () at
/usr/lib/x86_64-linux-gnu/tls/libnvidia-tls.so.367.57
#6  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (__nbytes=16,
__buf=0x7f3fb74b9a30, __fd=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/unistd.h:44
#7  0x00007f3fd9a6cc40 in g_wakeup_acknowledge (wakeup=0x7f3fbc0015b0) at
././glib/gwakeup.c:210
#8  0x00007f3fd9a284be in g_main_context_check
(context=context@entry=0x7f3fb00009b0, max_priority=2147483647,
fds=fds@entry=0x7f3fb0031a60, n_fds=n_fds@entry=1) at ././glib/gmain.c:3707
#9  0x00007f3fd9a28994 in g_main_context_iterate
(context=context@entry=0x7f3fb00009b0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3926
#10 0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3fb00009b0,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#11 0x00007f3fe226a6fb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f3fb00008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f3fb74b9c50, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#13 0x00007f3fe20360d3 in QThread::exec() (this=this@entry=0x7f3fe453ed60
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
thread/qthread.cpp:507
#14 0x00007f3fe44c96d5 in QDBusConnectionManager::run() (this=0x7f3fe453ed60
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
qdbusconnection.cpp:178
#15 0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x7f3fe453ed60
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
thread/qthread_unix.cpp:368
#16 0x00007f3fdb697464 in start_thread (arg=0x7f3fb74ba700) at
pthread_create.c:333
#17 0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f3fc1002700 (LWP 20990)):
#0  0x00007f3fe173556d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3fdbcc5150 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f3fdbcc6ee9 in xcb_wait_for_event () at
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f3fc398fb69 in QXcbEventReader::run() (this=0x55a4981b7b90) at
qxcbconnection.cpp:1343
#4  0x00007f3fe203ad88 in QThreadPrivate::start(void*) (arg=0x55a4981b7b90) at
thread/qthread_unix.cpp:368
#5  0x00007f3fdb697464 in start_thread (arg=0x7f3fc1002700) at
pthread_create.c:333
#6  0x00007f3fe173e9df in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f3fcaffd940 (LWP 20989)):
[KCrash Handler]
#6  0x00007f3fd905ba40 in KMime::Content::parent() const () at
/usr/lib/x86_64-linux-gnu/libKF5Mime.so.5
#7  0x00007f3fd905ba73 in KMime::Content::topLevel() const () at
/usr/lib/x86_64-linux-gnu/libKF5Mime.so.5
#8  0x00007f3f14da83c2 in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/messageviewer_bodypartformatter_text_calendar.so
#9  0x00007f3f14dac9d7 in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/messageviewer_bodypartformatter_text_calendar.so
#10 0x00007f3f14daebe4 in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/messageviewer_bodypartformatter_text_calendar.so
#11 0x00007f3f14db0515 in  () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/messageviewer_bodypartformatter_text_calendar.so
#12 0x00007f3f4fd0c408 in  () at
/usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#13 0x00007f3f4fd0a388 in  () at
/usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#14 0x00007f3f4fcea330 in  () at
/usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#15 0x00007f3fe2242b39 in QObject::event(QEvent*) (this=0x55a498757e60,
e=<optimized out>) at kernel/qobject.cpp:1263
#16 0x00007f3fe2d4eb2c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x55a498757e60, e=0x55a499092830) at
kernel/qapplication.cpp:3799
#17 0x00007f3fe2d562e1 in QApplication::notify(QObject*, QEvent*)
(this=0x7fff9afeeab0, receiver=0x55a498757e60, e=0x55a499092830) at
kernel/qapplication.cpp:3556
#18 0x00007f3fe2216090 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x55a498757e60, event=event@entry=0x55a499092830) at
kernel/qcoreapplication.cpp:988
#19 0x00007f3fe221881d in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) (event=0x55a499092830, receiver=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 0x00007f3fe221881d in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0,
data=0x55a4981883f0) at kernel/qcoreapplication.cpp:1649
#21 0x00007f3fe2218c88 in QCoreApplication::sendPostedEvents(QObject*, int)
(receiver=receiver@entry=0x0, event_type=event_type@entry=0) at
kernel/qcoreapplication.cpp:1503
#22 0x00007f3fe226a2d3 in postEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (s=0x55a4981f9c00) at kernel/qeventdispatcher_glib.cpp:276
#23 0x00007f3fd9a287f7 in g_main_context_dispatch (context=0x7f3fbc001710) at
././glib/gmain.c:3203
#24 0x00007f3fd9a287f7 in g_main_context_dispatch
(context=context@entry=0x7f3fbc001710) at ././glib/gmain.c:3856
#25 0x00007f3fd9a28a60 in g_main_context_iterate
(context=context@entry=0x7f3fbc001710, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ././glib/gmain.c:3929
#26 0x00007f3fd9a28b0c in g_main_context_iteration (context=0x7f3fbc001710,
may_block=may_block@entry=1) at ././glib/gmain.c:3990
#27 0x00007f3fe226a6df in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x55a4981fe9d0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#28 0x00007f3fe221407a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fff9afee810, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:212
#29 0x00007f3fe221c7ec in QCoreApplication::exec() () at
kernel/qcoreapplication.cpp:1261
#30 0x000055a4972592bf in  ()
#31 0x00007f3fe16762b1 in __libc_start_main (main=0x55a497258320, argc=1,
argv=0x7fff9afeec08, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff9afeebf8) at ../csu/libc-start.c:291
#32 0x000055a4972597ca in _start ()

Reported using DrKonqi

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