Bug 405122

Summary: Kontact(KMail) crashes after switching away if some loading process is going on
Product: [Applications] kontact Reporter: Mykola Krachkovsky <w01dnick>
Component: generalAssignee: kdepim bugs <pim-bugs-null>
Status: RESOLVED FIXED    
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 Mykola Krachkovsky 2019-03-05 21:46:53 UTC 
Application: kontact (5.10.2)

Qt Version: 5.12.0
Frameworks Version: 5.55.0
Operating System: Linux 4.20.12-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:
1. I have IMAP GMail acount with a lot of labels/directories.
2. IMAP directory refreshing was in process.
3. Select some letter, which is loading but not loaded yet.
4. Switch away to another desktop.
5. Immediately (almost?) Kontact crashed.

This doesn't happen everytime, but have happened several times, so I've installed symbols to provide more information, hope it would be helpful enough.

I'm not sure steps 2 & 3 are mandatory to reproduce this bug. But all crashes happened on switching to other desktop (usually I'm using hotkey, Super+arrow_key to navigate 3x3 desktops).

The crash can be reproduced sometimes.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9d86412a40 (LWP 24653))]

Thread 23 (Thread 0x7f9c6b02d700 (LWP 22179)):
#0  0x00007f9d942bb428 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9d8de5ec57 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9d8de5f5aa in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9d8de5f692 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9d8de1d131 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9d8de1ff96 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9d8de20254 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7f9c6bfff700 (LWP 24767)):
#0  0x00007f9d9527ead9 in poll () from /lib64/libc.so.6
#1  0x00007f9d938c6156 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9d938c627c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9d957cfc5b in QEventDispatcherGlib::processEvents (this=0x7f9c60000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f9d9577a4fb in QEventLoop::exec (this=this@entry=0x7f9c6bffeb60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007f9d955c4396 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007f9d955c56e2 in QThreadPrivate::start (arg=0x55a9af86d960) at thread/qthread_unix.cpp:361
#7  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7f9c7f7fe700 (LWP 24705)):
#0  0x00007f9d9527ead9 in poll () from /lib64/libc.so.6
#1  0x00007f9d938c6156 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9d938c627c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9d957cfc5b in QEventDispatcherGlib::processEvents (this=0x7f9c6c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f9d9577a4fb in QEventLoop::exec (this=this@entry=0x7f9c7f7fdb60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007f9d955c4396 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007f9d955c56e2 in QThreadPrivate::start (arg=0x55a9a9600350) at thread/qthread_unix.cpp:361
#7  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7f9c7ffff700 (LWP 24697)):
#0  0x00007f9d9527a6b4 in read () from /lib64/libc.so.6
#1  0x00007f9d9390bc70 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9d938c5c2f in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9d938c6100 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f9d938c627c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f9d957cfc5b in QEventDispatcherGlib::processEvents (this=0x7f9c74000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f9d9577a4fb in QEventLoop::exec (this=this@entry=0x7f9c7fffeb60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#7  0x00007f9d955c4396 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#8  0x00007f9d955c56e2 in QThreadPrivate::start (arg=0x55a9a93b1350) at thread/qthread_unix.cpp:361
#9  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7f9c94c3b700 (LWP 24696)):
#0  0x00007f9d938c57ac in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f9d938c608b in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9d938c627c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9d957cfc5b in QEventDispatcherGlib::processEvents (this=0x7f9c78000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f9d9577a4fb in QEventLoop::exec (this=this@entry=0x7f9c94c3ab60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007f9d955c4396 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007f9d955c56e2 in QThreadPrivate::start (arg=0x55a9a93679d0) at thread/qthread_unix.cpp:361
#7  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7f9c954cd700 (LWP 24695)):
#0  0x00007f9d9390cff9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f9d938c5b3c in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9d938c6100 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9d938c627c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f9d957cfc5b in QEventDispatcherGlib::processEvents (this=0x7f9c84000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f9d9577a4fb in QEventLoop::exec (this=this@entry=0x7f9c954ccb60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007f9d955c4396 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007f9d955c56e2 in QThreadPrivate::start (arg=0x55a9a9388840) at thread/qthread_unix.cpp:361
#8  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f9c96ffd700 (LWP 24681)):
#0  0x00007f9d942bb03c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9d8de5eb89 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9d8de5f5b8 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9d8de5f64f in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9d8de1d148 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9d8de1ff96 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9d8de202d4 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f9c977fe700 (LWP 24680)):
#0  0x00007f9d9527a757 in write () from /lib64/libc.so.6
#1  0x00007f9d9520b1cd in _IO_file_write@@GLIBC_2.2.5 () from /lib64/libc.so.6
#2  0x00007f9d9520a56f in new_do_write () from /lib64/libc.so.6
#3  0x00007f9d9520b8fe in __GI__IO_file_xsputn () from /lib64/libc.so.6
#4  0x00007f9d951f7d4a in buffered_vfprintf () from /lib64/libc.so.6
#5  0x00007f9d951f5138 in __vfprintf_internal () from /lib64/libc.so.6
#6  0x00007f9d9529867e in __fprintf_chk () from /lib64/libc.so.6
#7  0x00007f9d8aae16ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f9d8aae18c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#9  0x00007f9d8aae3230 in ?? () from /usr/lib64/libevent-2.1.so.6
#10 0x00007f9d8aad9068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#11 0x00007f9d8de653a4 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9d8ddfbc0b in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9d8de2e5c1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#16 0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f9d3d7fa700 (LWP 24677)):
#0  0x00007f9d942bb03c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9d8af2923a in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007f9d8af2925b in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#4  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f9d3dffb700 (LWP 24676)):
#0  0x00007f9d9527ead9 in poll () from /lib64/libc.so.6
#1  0x00007f9d8003e0f1 in ?? () from /usr/lib64/libpulse.so.0
#2  0x00007f9d8002f920 in pa_mainloop_poll () from /usr/lib64/libpulse.so.0
#3  0x00007f9d8002ff6e in pa_mainloop_iterate () from /usr/lib64/libpulse.so.0
#4  0x00007f9d80030020 in pa_mainloop_run () from /usr/lib64/libpulse.so.0
#5  0x00007f9d8003e039 in ?? () from /usr/lib64/libpulse.so.0
#6  0x00007f9d785c2e28 in ?? () from /usr/lib64/pulseaudio/libpulsecommon-12.2.so
#7  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f9d3e7fc700 (LWP 24675)):
#0  0x00007f9d952899bf in epoll_wait () from /lib64/libc.so.6
#1  0x00007f9d8aae30a9 in ?? () from /usr/lib64/libevent-2.1.so.6
#2  0x00007f9d8aad9068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#3  0x00007f9d8de652bd in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9d8ddfbc0b in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9d8de2e5c1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f9d3effd700 (LWP 24674)):
#0  0x00007f9d9527a7b7 in lseek64 () from /lib64/libc.so.6
#1  0x00007f9d8e0c81bf in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9d8e0c8b90 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9d8e0c8f35 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9d8de53bb5 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9d8de54f07 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9d8ddcd9c2 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9d8ddcfcde in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9d8ddc35f9 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9d8c8845d3 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9d906af9b5 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9d906af9d1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9d906b8bba in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9d906b9043 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007f9d906c42c1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f9d906c011f in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#16 0x00007f9d906c02e1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#17 0x00007f9d906c063b in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#18 0x00007f9d906c0c55 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#19 0x00007f9d8ddb7b23 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#20 0x00007f9d8ddde0da in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#21 0x00007f9d8ddde79f in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#22 0x00007f9d8ddde928 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#23 0x00007f9d8ddd8fc1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#24 0x00007f9d8ddfbc0b in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#25 0x00007f9d8de2e5c1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#26 0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#27 0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#28 0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f9d3f7fe700 (LWP 24673)):
#0  0x00007f9d942bb428 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9d8de5ec57 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9d8de5f5aa in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9d8ddd9020 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9d8ddfbc0b in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9d8de2e5c1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f9d3ffff700 (LWP 24672)):
#0  0x00007f9d942bb03c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9d8de5eb89 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9d8e72f1c8 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9d8de2fb7f in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f9d5cff9700 (LWP 24671)):
#0  0x00007f9d942bb03c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9d8de5eb89 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9d8de5f5b8 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9d8de5f64f in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9d8de1d148 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9d8de1ff96 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9d8de20294 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f9d5d7fa700 (LWP 24670)):
#0  0x00007f9d95296a9c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f9d951f7ced in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f9d951f5138 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f9d9529867e in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f9d8aae16ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#5  0x00007f9d8aae18c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#6  0x00007f9d8aae3230 in ?? () from /usr/lib64/libevent-2.1.so.6
#7  0x00007f9d8aad9068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f9d8de653a4 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9d8ddfbc0b in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9d8d7af234 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9d8de2e718 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#14 0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f9d5f7fe700 (LWP 24666)):
#0  0x00007f9d942bb428 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9d8de5ec57 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f9d8de5f5aa in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007f9d8de5f692 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f9d8de1d131 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f9d8de1ff96 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007f9d8de20254 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f9d5ffff700 (LWP 24665)):
#0  0x00007f9d95296a9c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f9d951f7ced in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f9d951f5138 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f9d9529867e in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f9d8aae16ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#5  0x00007f9d8aae18c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#6  0x00007f9d8aae3230 in ?? () from /usr/lib64/libevent-2.1.so.6
#7  0x00007f9d8aad9068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f9d8de653a4 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9d8ddfbc0b in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9d8de23824 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9d8de2e718 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#14 0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f9d795f2700 (LWP 24663)):
#0  0x00007f9d95296a9c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f9d951f7ced in buffered_vfprintf () from /lib64/libc.so.6
#2  0x00007f9d951f5138 in __vfprintf_internal () from /lib64/libc.so.6
#3  0x00007f9d9529867e in __fprintf_chk () from /lib64/libc.so.6
#4  0x00007f9d8aae16ff in event_logv_ () from /usr/lib64/libevent-2.1.so.6
#5  0x00007f9d8aae18c4 in event_warn () from /usr/lib64/libevent-2.1.so.6
#6  0x00007f9d8aae3230 in ?? () from /usr/lib64/libevent-2.1.so.6
#7  0x00007f9d8aad9068 in event_base_loop () from /usr/lib64/libevent-2.1.so.6
#8  0x00007f9d8de652bd in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007f9d8ddfbc0b in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007f9d8de2e5c1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007f9d8de617b1 in ?? () from /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#13 0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f9d7bfff700 (LWP 24656)):
#0  0x00007f9d9527ead9 in poll () from /lib64/libc.so.6
#1  0x00007f9d938c6156 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f9d938c627c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f9d957cfc5b in QEventDispatcherGlib::processEvents (this=0x7f9d70000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f9d9577a4fb in QEventLoop::exec (this=this@entry=0x7f9d7bffeb30, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#5  0x00007f9d955c4396 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#6  0x00007f9d94c96565 in ?? () from /usr/lib64/libQt5DBus.so.5
#7  0x00007f9d955c56e2 in QThreadPrivate::start (arg=0x7f9d94d10d80) at thread/qthread_unix.cpp:361
#8  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f9d82968700 (LWP 24655)):
#0  0x00007f9d942bb03c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9d82d76f93 in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f9d82d76ce7 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#4  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f9d8448f700 (LWP 24654)):
#0  0x00007f9d9527ead9 in poll () from /lib64/libc.so.6
#1  0x00007f9d942e2cc7 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f9d942e48ea in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f9d8460d80a in QXcbEventQueue::run (this=0x55a9a8a4b3b0) at qxcbeventqueue.cpp:225
#4  0x00007f9d955c56e2 in QThreadPrivate::start (arg=0x55a9a8a4b3b0) at thread/qthread_unix.cpp:361
#5  0x00007f9d942b4fab in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9d9528969f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f9d86412a40 (LWP 24653)):
[KCrash Handler]
#6  0x00007f9d961ad496 in qobject_cast<QWidget*> (o=0x55a9b51df230) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:142
#7  QWidget::event (this=<optimized out>, event=0x7fff656500e0) at kernel/qwidget.cpp:9177
#8  0x00007f9d9616d591 in QApplicationPrivate::notify_helper (this=this@entry=0x55a9a8a44dd0, receiver=receiver@entry=0x55a9a92c8900, e=e@entry=0x7fff656500e0) at kernel/qapplication.cpp:3753
#9  0x00007f9d96174b30 in QApplication::notify (this=0x7fff656505d0, receiver=0x55a9a92c8900, e=0x7fff656500e0) at kernel/qapplication.cpp:3500
#10 0x00007f9d9577b829 in QCoreApplication::notifyInternal2 (receiver=0x55a9a92c8900, event=0x7fff656500e0) at ../../include/QtCore/5.12.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#11 0x00007f9d961ad4b4 in QWidget::event (this=<optimized out>, event=0x7fff656500e0) at kernel/qwidget.cpp:9179
#12 0x00007f9d9616d591 in QApplicationPrivate::notify_helper (this=this@entry=0x55a9a8a44dd0, receiver=receiver@entry=0x55a9a9344710, e=e@entry=0x7fff656500e0) at kernel/qapplication.cpp:3753
#13 0x00007f9d96174b30 in QApplication::notify (this=0x7fff656505d0, receiver=0x55a9a9344710, e=0x7fff656500e0) at kernel/qapplication.cpp:3500
#14 0x00007f9d9577b829 in QCoreApplication::notifyInternal2 (receiver=0x55a9a9344710, event=0x7fff656500e0) at ../../include/QtCore/5.12.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#15 0x00007f9d961ad4b4 in QWidget::event (this=this@entry=0x55a9a90d3200, event=event@entry=0x7fff656500e0) at kernel/qwidget.cpp:9179
#16 0x00007f9d96250dfe in QFrame::event (this=0x55a9a90d3200, e=0x7fff656500e0) at widgets/qframe.cpp:550
#17 0x00007f9d9616d591 in QApplicationPrivate::notify_helper (this=this@entry=0x55a9a8a44dd0, receiver=receiver@entry=0x55a9a90d3200, e=e@entry=0x7fff656500e0) at kernel/qapplication.cpp:3753
#18 0x00007f9d96174b30 in QApplication::notify (this=0x7fff656505d0, receiver=0x55a9a90d3200, e=0x7fff656500e0) at kernel/qapplication.cpp:3500
#19 0x00007f9d9577b829 in QCoreApplication::notifyInternal2 (receiver=0x55a9a90d3200, event=0x7fff656500e0) at ../../include/QtCore/5.12.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#20 0x00007f9d961ad4b4 in QWidget::event (this=<optimized out>, event=0x7fff656500e0) at kernel/qwidget.cpp:9179
#21 0x00007f9d9616d591 in QApplicationPrivate::notify_helper (this=this@entry=0x55a9a8a44dd0, receiver=receiver@entry=0x55a9a90c9110, e=e@entry=0x7fff656500e0) at kernel/qapplication.cpp:3753
#22 0x00007f9d96174b30 in QApplication::notify (this=0x7fff656505d0, receiver=0x55a9a90c9110, e=0x7fff656500e0) at kernel/qapplication.cpp:3500
#23 0x00007f9d9577b829 in QCoreApplication::notifyInternal2 (receiver=0x55a9a90c9110, event=0x7fff656500e0) at ../../include/QtCore/5.12.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#24 0x00007f9d961ad4b4 in QWidget::event (this=<optimized out>, event=0x7fff656500e0) at kernel/qwidget.cpp:9179
#25 0x00007f9d9616d591 in QApplicationPrivate::notify_helper (this=this@entry=0x55a9a8a44dd0, receiver=receiver@entry=0x55a9a90ff850, e=e@entry=0x7fff656500e0) at kernel/qapplication.cpp:3753
#26 0x00007f9d96174b30 in QApplication::notify (this=0x7fff656505d0, receiver=0x55a9a90ff850, e=0x7fff656500e0) at kernel/qapplication.cpp:3500
#27 0x00007f9d9577b829 in QCoreApplication::notifyInternal2 (receiver=0x55a9a90ff850, event=0x7fff656500e0) at ../../include/QtCore/5.12.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#28 0x00007f9d961ad4b4 in QWidget::event (this=this@entry=0x55a9a90fe3e0, event=event@entry=0x7fff656500e0) at kernel/qwidget.cpp:9179
#29 0x00007f9d962b4004 in QMainWindow::event (this=this@entry=0x55a9a90fe3e0, event=event@entry=0x7fff656500e0) at widgets/qmainwindow.cpp:1339
#30 0x00007f9d968d82ab in KMainWindow::event (this=this@entry=0x55a9a90fe3e0, ev=ev@entry=0x7fff656500e0) at /usr/src/debug/kxmlgui-5.55.0-2.1.x86_64/src/kmainwindow.cpp:877
#31 0x00007f9d96921aa5 in KXmlGuiWindow::event (this=0x55a9a90fe3e0, ev=0x7fff656500e0) at /usr/src/debug/kxmlgui-5.55.0-2.1.x86_64/src/kxmlguiwindow.cpp:125
#32 0x00007f9d9616d591 in QApplicationPrivate::notify_helper (this=this@entry=0x55a9a8a44dd0, receiver=receiver@entry=0x55a9a90fe3e0, e=e@entry=0x7fff656500e0) at kernel/qapplication.cpp:3753
#33 0x00007f9d96174b30 in QApplication::notify (this=0x7fff656505d0, receiver=0x55a9a90fe3e0, e=0x7fff656500e0) at kernel/qapplication.cpp:3500
#34 0x00007f9d9577b829 in QCoreApplication::notifyInternal2 (receiver=0x55a9a90fe3e0, event=0x7fff656500e0) at ../../include/QtCore/5.12.0/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:322
#35 0x00007f9d96172b37 in QApplication::setActiveWindow (act=act@entry=0x55a9a90fe3e0) at kernel/qapplication.cpp:2119
#36 0x00007f9d96172d33 in QApplicationPrivate::notifyActiveWindowChange (this=<optimized out>, previous=<optimized out>) at kernel/qapplication.cpp:2185
#37 0x00007f9d95b60f35 in QGuiApplicationPrivate::processActivatedEvent (e=<optimized out>) at kernel/qguiapplication.cpp:2312
#38 0x00007f9d95b659dd in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x55a9af6c7380) at kernel/qguiapplication.cpp:1858
#39 0x00007f9d95b3fc6b in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1068
#40 0x00007f9d8460e7ea in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#41 0x00007f9d938c5f4e in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#42 0x00007f9d938c61e8 in ?? () from /usr/lib64/libglib-2.0.so.0
#43 0x00007f9d938c627c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#44 0x00007f9d957cfc43 in QEventDispatcherGlib::processEvents (this=0x55a9a8b1ff40, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#45 0x00007f9d9577a4fb in QEventLoop::exec (this=this@entry=0x7fff656504a0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#46 0x00007f9d95782652 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#47 0x000055a9a6da5738 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kontact-18.12.2-1.1.x86_64/src/main.cpp:229
[Inferior 1 (process 24653) detached]

Possible duplicates by query: bug 287238.

Reported using DrKonqi
Comment 1 Mykola Krachkovsky 2020-01-18 11:46:53 UTC 
Isn't present anymore.