Bug 383840

Summary: DAV resource crashes kontact
Product: [Applications] kontact Reporter: Metko <metkometko>
Component: calendarAssignee: kdepim bugs <pim-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Metko 2017-08-22 11:24:07 UTC 
Application: kontact (5.6.0)

Qt Version: 5.9.1
Frameworks Version: 5.37.0
Operating System: Linux 4.4.79-19-default x86_64
Distribution: "openSUSE Leap 42.3"

-- Information about the crash:
Switching from mail to calendar in contact, after a few seconds the application crashes. Manually removing the DAV resource makes the calendar operational again, but without the remote calendar of course. I can recreate the DAV resource (for accessing an owncloud calendar) in the calendar, but as soon as I switch to another program in kontact (e.g., mail) and back to the clanedar, it crashes again.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7d970bd780 (LWP 5096))]

Thread 28 (Thread 0x7f7c4bac4700 (LWP 5168)):
#0  0x00007f7d93afa20d in poll () at /lib64/libc.so.6
#1  0x00007f7d8db1d314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f7d8db1d42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f7d9461713b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f7d945c4c2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7d9440902a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7d9440d74d in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 27 (Thread 0x7f7c54145700 (LWP 5152)):
#0  0x00007f7d93afa20d in poll () at /lib64/libc.so.6
#1  0x00007f7d8db1d314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f7d8db1d42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f7d9461713b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f7d945c4c2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7d9440902a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7d9440d74d in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 26 (Thread 0x7f7c666ad700 (LWP 5130)):
#0  0x00007f7d8db5e899 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f7d8db1c969 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f7d8db1d230 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f7d8db1d42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f7d9461713b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7d945c4c2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7d9440902a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f7d9440d74d in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 25 (Thread 0x7f7c66eae700 (LWP 5129)):
#0  0x00007f7d8db5e8b4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f7d8db1d1cd in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f7d8db1d42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f7d9461713b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f7d945c4c2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7d9440902a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7d9440d74d in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7f7c67d32700 (LWP 5128)):
#0  0x00007f7d93afa20d in poll () at /lib64/libc.so.6
#1  0x00007f7d8db1d314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f7d8db1d42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f7d9461713b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f7d945c4c2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7d9440902a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7d9440d74d in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7f7d1dffb700 (LWP 5127)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d7dd22b6b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f7d7dd22b99 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7f7d1e7fc700 (LWP 5126)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d8496f609 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d8496fe77 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84971230 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7f7d1effd700 (LWP 5125)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d8496f609 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d8496fe77 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84971230 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7f7d1f7fe700 (LWP 5122)):
#0  0x00007f7d93b0eeab in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f7d93b10a46 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f7d7c94bfdf in  () at /usr/lib64/libevent-2.0.so.5
#3  0x00007f7d7c94c1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#4  0x00007f7d7c950468 in  () at /usr/lib64/libevent-2.0.so.5
#5  0x00007f7d7c93c477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#6  0x00007f7d84942231 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7f7d1ffff700 (LWP 5121)):
#0  0x00007f7d93afa20d in poll () at /lib64/libc.so.6
#1  0x00007f7d6efeae81 in  () at /usr/lib64/libpulse.so.0
#2  0x00007f7d6efdc57c in pa_mainloop_poll () at /usr/lib64/libpulse.so.0
#3  0x00007f7d6efdcbee in pa_mainloop_iterate () at /usr/lib64/libpulse.so.0
#4  0x00007f7d6efdcca0 in pa_mainloop_run () at /usr/lib64/libpulse.so.0
#5  0x00007f7d6efeade6 in  () at /usr/lib64/libpulse.so.0
#6  0x00007f7d6e556708 in  () at /usr/lib64/pulseaudio/libpulsecommon-10.99.so
#7  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7f7d4cff9700 (LWP 5120)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d84965f0a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84965fc4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84941bdd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7f7d4d7fa700 (LWP 5119)):
#0  0x00007f7d8fad9468 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d8499e7e2 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84965f9e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84941c18 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7f7d4dffb700 (LWP 5118)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d851d5b5d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84971230 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#5  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7f7d4e7fc700 (LWP 5117)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d8496f609 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d8496fe77 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84971230 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7f7d4effd700 (LWP 5116)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d84965f0a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84965fc4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84941bdd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f7d4f7fe700 (LWP 5115)):
#0  0x00007f7d93b0eeab in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f7d93b10a46 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f7d7c94bfdf in  () at /usr/lib64/libevent-2.0.so.5
#3  0x00007f7d7c94c1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#4  0x00007f7d7c950468 in  () at /usr/lib64/libevent-2.0.so.5
#5  0x00007f7d7c93c477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#6  0x00007f7d8494219e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f7d8423ae35 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f7d8423b26b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#14 0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f7d4ffff700 (LWP 5114)):
#0  0x00007f7d8fad9468 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d8499e7e2 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84965f9e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84941c18 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7d8423adb5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8423b2cb in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f7d54ff9700 (LWP 5113)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d84965f0a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84965fc4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84941bdd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7d8423ad35 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8423b2bb in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f7d557fa700 (LWP 5112)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d84965f0a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84965fc4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84941bdd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7d8423acb5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8423b2ab in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f7d55ffb700 (LWP 5111)):
#0  0x00007f7d93af62ed in write () at /lib64/libc.so.6
#1  0x00007f7d93a8c840 in _IO_new_file_write () at /lib64/libc.so.6
#2  0x00007f7d93a8be63 in new_do_write () at /lib64/libc.so.6
#3  0x00007f7d93a8ce46 in __GI__IO_file_xsputn () at /lib64/libc.so.6
#4  0x00007f7d93a63b1b in buffered_vfprintf () at /lib64/libc.so.6
#5  0x00007f7d93a60e8e in vfprintf () at /lib64/libc.so.6
#6  0x00007f7d93b10aa3 in __fprintf_chk () at /lib64/libc.so.6
#7  0x00007f7d7c94bfdf in  () at /usr/lib64/libevent-2.0.so.5
#8  0x00007f7d7c94c1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#9  0x00007f7d7c950468 in  () at /usr/lib64/libevent-2.0.so.5
#10 0x00007f7d7c93c477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#11 0x00007f7d84942231 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f7d8423ac35 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f7d8423b29b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#19 0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f7d567fc700 (LWP 5110)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d84965f0a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84965fc4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84941bdd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7d8423abb5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8423b28b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f7d56ffd700 (LWP 5109)):
#0  0x00007f7d8fad9468 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d8499e7e2 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d849744f6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84974742 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f7d577fe700 (LWP 5108)):
#0  0x00007f7d8fad9468 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d8499e7e2 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d849744f6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84974742 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f7d57fff700 (LWP 5107)):
#0  0x00007f7d8fad90bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f7d84965f0a in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f7d84965fc4 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f7d84941bdd in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f7d64eed700 (LWP 5106)):
#0  0x00007f7d93b0eeab in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007f7d93b10a46 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007f7d7c94bfdf in  () at /usr/lib64/libevent-2.0.so.5
#3  0x00007f7d7c94c1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#4  0x00007f7d7c950468 in  () at /usr/lib64/libevent-2.0.so.5
#5  0x00007f7d7c93c477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#6  0x00007f7d8494219e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f7d8493df52 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f7d84959998 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f7d849715b6 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f7d8496d86d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#12 0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f7d6cb9e700 (LWP 5099)):
#0  0x00007f7d93afa20d in poll () at /lib64/libc.so.6
#1  0x00007f7d8db1d314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f7d8db1d42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f7d9461713b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f7d945c4c2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7d9440902a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f7d92da57e5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f7d9440d74d in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f7d75793700 (LWP 5098)):
#0  0x00007f7d93afa20d in poll () at /lib64/libc.so.6
#1  0x00007f7d8f5ba3e2 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f7d8f5bbfcf in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f7d77aa6879 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f7d9440d74d in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f7d8fad4744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f7d93b02aad in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f7d970bd780 (LWP 5096)):
[KCrash Handler]
#6  0x00007f7c5720ab83 in  () at /usr/lib64/libKF5EventViews.so.5
#7  0x00007f7c57213c51 in  () at /usr/lib64/libKF5EventViews.so.5
#8  0x00007f7c57213d44 in  () at /usr/lib64/libKF5EventViews.so.5
#9  0x00007f7c5720f429 in  () at /usr/lib64/libKF5EventViews.so.5
#10 0x00007f7d945efdef in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f7d94570a9e in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#12 0x00007f7d9457800a in QAbstractItemModel::endInsertRows() () at /usr/lib64/libQt5Core.so.5
#13 0x00007f7d94592a21 in  () at /usr/lib64/libQt5Core.so.5
#14 0x00007f7d94599357 in  () at /usr/lib64/libQt5Core.so.5
#15 0x00007f7d94599e49 in  () at /usr/lib64/libQt5Core.so.5
#16 0x00007f7d945efdef in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#17 0x00007f7d94570a9e in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f7d9457800a in QAbstractItemModel::endInsertRows() () at /usr/lib64/libQt5Core.so.5
#19 0x00007f7d94592a21 in  () at /usr/lib64/libQt5Core.so.5
#20 0x00007f7d94599357 in  () at /usr/lib64/libQt5Core.so.5
#21 0x00007f7d94599e49 in  () at /usr/lib64/libQt5Core.so.5
#22 0x00007f7d945efdef in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#23 0x00007f7d94570a9e in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#24 0x00007f7d9457800a in QAbstractItemModel::endInsertRows() () at /usr/lib64/libQt5Core.so.5
#25 0x00007f7d94592a21 in  () at /usr/lib64/libQt5Core.so.5
#26 0x00007f7d94599357 in  () at /usr/lib64/libQt5Core.so.5
#27 0x00007f7d94599e49 in  () at /usr/lib64/libQt5Core.so.5
#28 0x00007f7d945efdef in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#29 0x00007f7d94570a9e in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f7d9457800a in QAbstractItemModel::endInsertRows() () at /usr/lib64/libQt5Core.so.5
#31 0x00007f7d8c4a91a8 in  () at /usr/lib64/libKF5ItemModels.so.5
#32 0x00007f7d945efdef in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#33 0x00007f7d94570a9e in QAbstractItemModel::rowsInserted(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#34 0x00007f7d9457800a in QAbstractItemModel::endInsertRows() () at /usr/lib64/libQt5Core.so.5
#35 0x00007f7d934da11c in  () at /usr/lib64/libKF5AkonadiCore.so.5
#36 0x00007f7d934da333 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#37 0x00007f7d934cbb25 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#38 0x00007f7d945efdef in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#39 0x00007f7d93488f62 in Akonadi::ItemFetchJob::itemsReceived(QVector<Akonadi::Item> const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#40 0x00007f7d93489cc3 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#41 0x00007f7d945efdef in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#42 0x00007f7d945fd437 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#43 0x00007f7d945fd712 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib64/libQt5Core.so.5
#44 0x00007f7d945f1504 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#45 0x00007f7d952fbafc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#46 0x00007f7d95302840 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#47 0x00007f7d945c6935 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#48 0x00007f7d946167ae in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#49 0x00007f7d94616df1 in  () at /usr/lib64/libQt5Core.so.5
#50 0x00007f7d8db1d134 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#51 0x00007f7d8db1d388 in  () at /usr/lib64/libglib-2.0.so.0
#52 0x00007f7d8db1d42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#53 0x00007f7d9461711c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#54 0x00007f7d945c4c2b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#55 0x00007f7d945cd1f4 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#56 0x0000000000404718 in  ()
#57 0x00007f7d93a396e5 in __libc_start_main () at /lib64/libc.so.6
#58 0x0000000000404cb9 in _start ()

Reported using DrKonqi
Comment 1 Metko 2017-08-24 07:30:05 UTC 
P.S.: The problem may be more related to displaying events in the standard calendar rather than fetching them through the DAV resource. Two arguments: 1) In aconadiconsole, which probably uses the same resource, the calendar items look alright. 2) When clicking on the eye icon next to the calendar in kontact/korganizer (with the resource itself disabled), the calendar also shows alright in the pop-up window that appears. Only if the resource is enabled (in the checkbox at the left), the program crashes.