Application: kontact (5.15.2 (20.08.2))

Qt Version: 5.15.1
Frameworks Version: 5.75.0
Operating System: Linux 5.8.15-1-default x86_64
Windowing system: X11
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:
Reading emails in Kmail.
I can read emails in Kmail without problems. When I select one specific email from the message list the message window stays blank and after 1 second Kontact closes unexpectedly. 
I can reopen Kmail and repeat the above.

The crash can be reproduced every time.

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

[New LWP 8588]
[New LWP 8589]
[New LWP 8596]
[New LWP 8598]
[New LWP 8603]
[New LWP 8604]
[New LWP 8605]
[New LWP 8606]
[New LWP 8607]
[New LWP 8609]
[New LWP 8627]
[New LWP 8628]
[New LWP 8629]
[New LWP 8630]
[New LWP 8642]
[New LWP 8656]
[New LWP 8671]
[New LWP 8685]
[New LWP 8692]
[New LWP 8723]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
0x00007f8499d9fe7f in poll () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7f8489963600 (LWP 8587))]

Thread 21 (Thread 0x7f841bfff640 (LWP 8723)):
#0  0x00007f849209b3a8 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8494cbc06a in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x0000000000003bf6 in ?? ()
#3  0x000000003615bbb9 in ?? ()
#4  0x0000000000003bd5 in ?? ()
#5  0x000000003615bbb9 in ?? ()
#6  0x0000000000000000 in ?? ()

Thread 20 (Thread 0x7f83f1a9f640 (LWP 8692)):
#0  0x00007f84915177fd in ?? () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f8491519515 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f849151aa33 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f849151b51b in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f849a3625cb in QEventDispatcherGlib::processEvents (this=0x7f83ec008760, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7f83f1a9e480, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#7  0x00007f849a12a7ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007f849a12b911 in QThreadPrivate::start (arg=0x55d40fa472a0) at thread/qthread_unix.cpp:329
#9  0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7f84098f8640 (LWP 8685)):
#0  0x00007f8499d9fe7f in poll () from /lib64/libc.so.6
#1  0x00007f849151b5ee in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f849a3625cb in QEventDispatcherGlib::processEvents (this=0x55d40fc3edc0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7f84098f7480, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f849a12a7ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f849a12b911 in QThreadPrivate::start (arg=0x55d40fc3d430) at thread/qthread_unix.cpp:329
#7  0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7f8418da4640 (LWP 8671)):
#0  0x00007f849209b082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8494cbbf6c in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in ?? ()

Thread 17 (Thread 0x7f841a5bd640 (LWP 8656)):
#0  0x00007f8491568ea9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f849151b5d4 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f849a3625cb in QEventDispatcherGlib::processEvents (this=0x7f83fc000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7f841a5bc480, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f849a12a7ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f849a12b911 in QThreadPrivate::start (arg=0x55d40d1aff50) at thread/qthread_unix.cpp:329
#7  0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f841b7fe640 (LWP 8642)):
#0  0x00007f849b7248f0 in update_get_addr () from /lib64/ld-linux-x86-64.so.2
#1  0x00007f849b72a228 in __tls_get_addr () from /lib64/ld-linux-x86-64.so.2
#2  0x00007f849a12ae36 in get_thread_data () at thread/qthread_unix.cpp:207
#3  QThreadData::current (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:207
#4  0x00007f849a36249a in postEventSourcePrepare (s=0x7f8404004fe0, timeout=0x7f841b7fd2b4) at kernel/qeventdispatcher_glib.cpp:253
#5  0x00007f849151ab12 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#6  0x00007f849151b51b in ?? () from /usr/lib64/libglib-2.0.so.0
#7  0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#8  0x00007f849a3625cb in QEventDispatcherGlib::processEvents (this=0x7f8404000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#9  0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7f841b7fd480, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#10 0x00007f849a12a7ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#11 0x00007f849a12b911 in QThreadPrivate::start (arg=0x55d40ce273f0) at thread/qthread_unix.cpp:329
#12 0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#13 0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f843645d640 (LWP 8630)):
#0  0x00007f8499d9fe7f in poll () from /lib64/libc.so.6
#1  0x00007f849151b5ee in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f849a3625cb in QEventDispatcherGlib::processEvents (this=0x7f841c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7f843645c480, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f849a12a7ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f849a12b911 in QThreadPrivate::start (arg=0x55d40cc00dd0) at thread/qthread_unix.cpp:329
#7  0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f8436c5e640 (LWP 8629)):
#0  0x00007f8499d9b8dc in read () from /lib64/libc.so.6
#1  0x00007f849156418f in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f849151b13e in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f849151b595 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f849a3625cb in QEventDispatcherGlib::processEvents (this=0x7f8428000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7f8436c5d480, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#7  0x00007f849a12a7ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007f849a12b911 in QThreadPrivate::start (arg=0x55d40cbafe40) at thread/qthread_unix.cpp:329
#9  0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f843745f640 (LWP 8628)):
#0  0x00007f849209b082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8494cbbf6c in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7f8437cd1640 (LWP 8627)):
#0  0x00007ffef0716758 in ?? ()
#1  0x00007ffef0716a27 in ?? ()
#2  0x00007f8499d720d1 in clock_gettime@GLIBC_2.2.5 () from /lib64/libc.so.6
#3  0x00007f849a361ec1 in qt_clock_gettime (ts=0x7f8437cd0250, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#4  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#5  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#6  0x00007f849a360799 in QTimerInfoList::updateCurrentTime (this=0x7f842c004950) at kernel/qtimerinfo_unix.cpp:91
#7  0x00007f849a362a75 in timerSourceCheckHelper (src=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:570
#8  timerSourceCheck (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:174
#9  0x00007f849151b009 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#10 0x00007f849151b595 in ?? () from /usr/lib64/libglib-2.0.so.0
#11 0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#12 0x00007f849a3625cb in QEventDispatcherGlib::processEvents (this=0x7f842c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#13 0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7f8437cd0480, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#14 0x00007f849a12a7ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x00007f849a12b911 in QThreadPrivate::start (arg=0x55d40c9a5ee0) at thread/qthread_unix.cpp:329
#16 0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#17 0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f84463fc640 (LWP 8609)):
#0  0x00007f8499d30417 in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f8499d191ce in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f8499db897f in __fprintf_chk () from /lib64/libc.so.6
#3  0x00007f84902bdd16 in event_logv_ () from /usr/lib64/libevent-2.1.so.7
#4  0x00007f84902bdee5 in event_warn () from /usr/lib64/libevent-2.1.so.7
#5  0x00007f84902c2d0c in ?? () from /usr/lib64/libevent-2.1.so.7
#6  0x00007f84902b9ffe in event_base_loop () from /usr/lib64/libevent-2.1.so.7
#7  0x00007f8494cc973c in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x000100770000005b in ?? ()
#9  0x00007f84463fb310 in ?? ()
#10 0x00007f84463fb308 in ?? ()
#11 0x00007f84300027c0 in ?? ()
#12 0x0000000000000008 in ?? ()
#13 0x0000000001c7e467 in ?? ()
#14 0x000000000000001d in ?? ()
#15 0x00000000000d6327 in ?? ()
#16 0x00007f846005a490 in ?? ()
#17 0x00007f846005f0b0 in ?? ()
#18 0x7fffffffffffffff in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x7fffffffffffffff in ?? ()
#21 0x00007f846005a490 in ?? ()
#22 0x00007f84463fb380 in ?? ()
#23 0x00007f8494c69b88 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#24 0x00007f849976bda8 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#25 0x00007f84463fb450 in ?? ()
#26 0x00007f84463fb3c0 in ?? ()
#27 0x00007f84463fb3c8 in ?? ()
#28 0x00007f84463fb430 in ?? ()
#29 0x00007f8494c44882 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#30 0x000000770000005b in ?? ()
#31 0x00007f84463fb450 in ?? ()
#32 0x00007f846005f0c0 in ?? ()
#33 0x00007f8430002740 in ?? ()
#34 0x00007f84463fb450 in ?? ()
#35 0x00007f846005a490 in ?? ()
#36 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f8446bfd640 (LWP 8607)):
#0  0x00007f849209b082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8494cbbf6c in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f84477fe640 (LWP 8606)):
#0  0x00007f8499d30417 in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f8499d191ce in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f8499db897f in __fprintf_chk () from /lib64/libc.so.6
#3  0x00007f84902bdd16 in event_logv_ () from /usr/lib64/libevent-2.1.so.7
#4  0x00007f84902bdee5 in event_warn () from /usr/lib64/libevent-2.1.so.7
#5  0x00007f84902c2d0c in ?? () from /usr/lib64/libevent-2.1.so.7
#6  0x00007f84902b9ffe in event_base_loop () from /usr/lib64/libevent-2.1.so.7
#7  0x00007f8494cc973c in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x000100770000005b in ?? ()
#9  0x00007f84477fd310 in ?? ()
#10 0x00007f84477fd308 in ?? ()
#11 0x00007f84380025c0 in ?? ()
#12 0x0000000000000008 in ?? ()
#13 0x00007f8438000020 in ?? ()
#14 0x00007f84477fd3c0 in ?? ()
#15 0x00007f84477fd3c8 in ?? ()
#16 0x00007f8440001fc0 in ?? ()
#17 0x00007f84400020e0 in ?? ()
#18 0x7fffffffffffffff in ?? ()
#19 0x0000000000000001 in ?? ()
#20 0x7fffffffffffffff in ?? ()
#21 0x00007f8440001fc0 in ?? ()
#22 0x00007f84477fd380 in ?? ()
#23 0x00007f8494c69b88 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#24 0x00007f8440001df0 in ?? ()
#25 0x00007f84477fd450 in ?? ()
#26 0x00007f84477fd3c0 in ?? ()
#27 0x00007f84477fd3c8 in ?? ()
#28 0x00007f84477fd430 in ?? ()
#29 0x00007f8494c44882 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#30 0x000000770000005b in ?? ()
#31 0x00007f84477fd450 in ?? ()
#32 0x00007f84400020f0 in ?? ()
#33 0x00007f8438002540 in ?? ()
#34 0x00007f84477fd450 in ?? ()
#35 0x00007f8440001fc0 in ?? ()
#36 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f8447fff640 (LWP 8605)):
#0  0x00007f849209b3a8 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8494cbc06a in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x0000000000003bf3 in ?? ()
#3  0x00000000361f0051 in ?? ()
#4  0x0000000000003bd5 in ?? ()
#5  0x00000000361f2761 in ?? ()
#6  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f8464ff9640 (LWP 8604)):
#0  0x00007f849209b082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8494cbbf6c in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f84657fa640 (LWP 8603)):
#0  0x00007f849209b082 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f8494cbbf6c in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f8467fff640 (LWP 8598)):
#0  0x00007f8499d9b97f in write () from /lib64/libc.so.6
#1  0x00007f8499d2bde5 in _IO_file_write@@GLIBC_2.2.5 () from /lib64/libc.so.6
#2  0x00007f8499d2b156 in new_do_write () from /lib64/libc.so.6
#3  0x00007f8499d2c4de in __GI__IO_file_xsputn () from /lib64/libc.so.6
#4  0x00007f8499d190af in buffered_vfprintf () from /lib64/libc.so.6
#5  0x00007f8499db897f in __fprintf_chk () from /lib64/libc.so.6
#6  0x00007f84902bdd16 in event_logv_ () from /usr/lib64/libevent-2.1.so.7
#7  0x00007f84902bdee5 in event_warn () from /usr/lib64/libevent-2.1.so.7
#8  0x00007f84902c2d0c in ?? () from /usr/lib64/libevent-2.1.so.7
#9  0x00007f84902b9ffe in event_base_loop () from /usr/lib64/libevent-2.1.so.7
#10 0x00007f8494cc9876 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x000100770000005b in ?? ()
#12 0x00007f8467ffe2f0 in ?? ()
#13 0x00007f8467ffe2e8 in ?? ()
#14 0x00007f8460002580 in ?? ()
#15 0x0000000000000008 in ?? ()
#16 0x000000000004d0e5 in ?? ()
#17 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f847d708640 (LWP 8596)):
#0  0x00007f8499d30417 in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f8499d191ce in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f8499db897f in __fprintf_chk () from /lib64/libc.so.6
#3  0x00007f84902bdd16 in event_logv_ () from /usr/lib64/libevent-2.1.so.7
#4  0x00007f84902bdee5 in event_warn () from /usr/lib64/libevent-2.1.so.7
#5  0x00007f84902c2d0c in ?? () from /usr/lib64/libevent-2.1.so.7
#6  0x00007f84902b9ffe in event_base_loop () from /usr/lib64/libevent-2.1.so.7
#7  0x00007f8494cc973c in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00017f8480007b40 in ?? ()
#9  0x00007f847d7072f0 in ?? ()
#10 0x00007f847d7072e8 in ?? ()
#11 0x00007f84680026a0 in ?? ()
#12 0x00007f847d707320 in ?? ()
#13 0x00000000b926d6df in ?? ()
#14 0x0000000000000c22 in ?? ()
#15 0x0000000000050a5f in ?? ()
#16 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f847ffff640 (LWP 8589)):
#0  0x00007f8491568ec4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f849151af9f in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f849151b595 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f849a3625cb in QEventDispatcherGlib::processEvents (this=0x7f8478000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7f847fffe430, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f849a12a7ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f849b3efa27 in ?? () from /usr/lib64/libQt5DBus.so.5
#8  0x00007f849a12b911 in QThreadPrivate::start (arg=0x7f849b45cd80) at thread/qthread_unix.cpp:329
#9  0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f8487965640 (LWP 8588)):
#0  0x00007f8499d9fe7f in poll () from /lib64/libc.so.6
#1  0x00007f84920c0862 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f84920c226c in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f8487ae0270 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f849a12b911 in QThreadPrivate::start (arg=0x55d40c3398e0) at thread/qthread_unix.cpp:329
#5  0x00007f8492094eb1 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f8499daaccf in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f8489963600 (LWP 8587)):
[KCrash Handler]
#4  std::__uniq_ptr_impl<KZip, std::default_delete<KZip> >::_M_ptr (this=<optimized out>) at /usr/include/c++/10/bits/unique_ptr.h:421
#5  std::unique_ptr<KZip, std::default_delete<KZip> >::get (this=<optimized out>) at /usr/include/c++/10/bits/unique_ptr.h:422
#6  std::unique_ptr<KZip, std::default_delete<KZip> >::operator-> (this=<optimized out>) at /usr/include/c++/10/bits/unique_ptr.h:416
#7  KPkPass::Pass::image (this=this@entry=0x0, baseName=..., devicePixelRatio=devicePixelRatio@entry=1) at /usr/src/debug/kpkpass-20.08.2-1.1.x86_64/src/pass.cpp:339
#8  0x00007f84182c104c in KPkPass::Pass::logo (this=this@entry=0x0, devicePixelRatio=devicePixelRatio@entry=1) at /usr/src/debug/kpkpass-20.08.2-1.1.x86_64/src/pass.cpp:354
#9  0x00007f84184e09a9 in (anonymous namespace)::Formatter::render (this=<optimized out>, msgPart=..., htmlWriter=0x55d40cee91b0, context=<optimized out>) at /usr/src/debug/kdepim-addons-20.08.2-1.1.x86_64/plugins/messageviewer/bodypartformatter/pkpass/pkpass_plugin.cpp:85
#10 0x00007f84444a9593 in MessageViewer::DefaultRendererPrivate::renderWithFactory (this=this@entry=0x55d4125e7e50, mo=<optimized out>, msgPart=..., htmlWriter=htmlWriter@entry=0x55d40cee91b0) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/messagepartthemes/default/defaultrenderer.cpp:759
#11 0x00007f84444aad12 in MessageViewer::RenderContext::renderWithFactory (writer=0x55d40cee91b0, msgPart=..., this=0x55d4125e7e50) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:307
#12 MessageViewer::DefaultRendererPrivate::renderFactory (this=0x55d4125e7e50, msgPart=..., htmlWriter=0x55d40cee91b0) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/messagepartthemes/default/defaultrenderer.cpp:780
#13 0x00007f84444acdd2 in MessageViewer::DefaultRendererPrivate::renderSubParts (this=0x55d4125e7e50, msgPart=..., htmlWriter=0x55d40cee91b0) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/messagepartthemes/default/defaultrenderer.cpp:252
#14 0x00007f84444a9a80 in MessageViewer::DefaultRendererPrivate::render (this=0x55d4125e7e50, mp=..., htmlWriter=0x55d40cee91b0) at /usr/include/qt5/QtCore/qbasicatomic.h:118
#15 0x00007f84444aafe9 in MessageViewer::DefaultRendererPrivate::renderFactory (this=0x55d4125e7e50, msgPart=..., htmlWriter=0x55d40cee91b0) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/messagepartthemes/default/defaultrenderer.cpp:792
#16 0x00007f84444acdd2 in MessageViewer::DefaultRendererPrivate::renderSubParts (this=0x55d4125e7e50, msgPart=..., htmlWriter=0x55d40cee91b0) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/messagepartthemes/default/defaultrenderer.cpp:252
#17 0x00007f84444aae58 in MessageViewer::DefaultRendererPrivate::render (htmlWriter=0x55d40cee91b0, mp=<synthetic pointer>..., this=0x55d4125e7e50) at /usr/include/qt5/QtCore/qbasicatomic.h:118
#18 MessageViewer::DefaultRendererPrivate::renderFactory (this=0x55d4125e7e50, msgPart=..., htmlWriter=0x55d40cee91b0) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/messagepartthemes/default/defaultrenderer.cpp:787
#19 0x00007f84444c4366 in MessageViewer::DefaultRenderer::render (writer=0x55d40cee91b0, msgPart=..., this=0x7ffef0689848) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/messagepartthemes/default/defaultrenderer.cpp:1070
#20 MessageViewer::EmptySource::render (this=<optimized out>, msgPart=..., showOnlyOneMimePart=<optimized out>) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/viewer/objecttreeemptysource.cpp:126
#21 0x00007f84444d55c4 in MessageViewer::ViewerPrivate::parseContent (this=0x55d40c9eaf70, content=0x55d410fabad0) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:301
#22 0x00007f84444dbe13 in MessageViewer::ViewerPrivate::displayMessage (this=0x55d40c9eaf70) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:301
#23 MessageViewer::ViewerPrivate::updateReaderWin (this=0x55d40c9eaf70) at /usr/src/debug/messagelib-20.08.2-1.1.x86_64/messageviewer/src/viewer/viewer_p.cpp:2242
#24 0x00007f849a341646 in QtPrivate::QSlotObjectBase::call (a=0x7ffef0689be0, r=0x55d40c9eaf70, this=0x55d40cf9ba50) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#25 doActivate<false> (sender=0x55d40c9eafe0, signal_index=3, argv=argv@entry=0x7ffef0689be0) at kernel/qobject.cpp:3886
#26 0x00007f849a33a9a0 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f849a5eec40 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffef0689be0) at kernel/qobject.cpp:3946
#27 0x00007f849a34555a in QTimer::timeout (this=<optimized out>, _t1=...) at .moc/moc_qtimer.cpp:205
#28 0x00007f849a336fcf in QObject::event (this=0x55d40c9eafe0, e=0x7ffef0689d50) at kernel/qobject.cpp:1291
#29 0x00007f849ae6014f in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55d40c9eafe0, e=0x7ffef0689d50) at kernel/qapplication.cpp:3630
#30 0x00007f849a30b05a in QCoreApplication::notifyInternal2 (receiver=0x55d40c9eafe0, event=0x7ffef0689d50) at ../../include/QtCore/5.15.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#31 0x00007f849a361973 in QTimerInfoList::activateTimers (this=0x55d40c3ecb10) at kernel/qtimerinfo_unix.cpp:643
#32 0x00007f849a3621f4 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:183
#33 0x00007f849151b2d7 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#34 0x00007f849151b658 in ?? () from /usr/lib64/libglib-2.0.so.0
#35 0x00007f849151b70f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#36 0x00007f849a3625af in QEventDispatcherGlib::processEvents (this=0x55d40c3f8bc0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#37 0x00007f849a309a1b in QEventLoop::exec (this=this@entry=0x7ffef0689f90, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#38 0x00007f849a311c90 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#39 0x000055d40a578fc7 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kontact-20.08.2-1.1.x86_64/src/main.cpp:230
[Inferior 1 (process 8587) detached]

Possible duplicates by query: bug 425651, bug 418844, bug 418707, bug 413349, bug 411378.

Reported using DrKonqi