Application: dolphin (18.04.3)

Qt Version: 5.11.1
Frameworks Version: 5.48.0
Operating System: Linux 4.17.9-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed: just opened dolphin and it crashed after a few seconds

It happens frequently in thunderbird, but not in leap 42.3

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6a80fb94c0 (LWP 1246))]

Thread 11 (Thread 0x7f6a3eb1b700 (LWP 1256)):
#0  0x00007f6a7a9a0a90 in postEventSourcePrepare (s=0x7f6a2c0047a0, timeout=0x7f6a3eb1abf4) at kernel/qeventdispatcher_glib.cpp:263
#1  0x00007f6a732627f9 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a732631fb in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a732633ec in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a7a9a0b3b in QEventDispatcherGlib::processEvents (this=0x7f6a2c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6a7a950b3b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007f6a7a7af326 in QThread::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007f6a7a7b88ec in QThreadPrivate::start(void*) () at thread/qthread_unix.cpp:367
#8  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f6a4ffff700 (LWP 1255)):
#0  0x00007f6a759794dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f6a5b40d67b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f6a5b40d3a7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f6a54a86700 (LWP 1254)):
#0  0x00007f6a759794dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f6a5b40d67b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f6a5b40d3a7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f6a55287700 (LWP 1253)):
#0  0x00007f6a759794dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f6a5b40d67b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f6a5b40d3a7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f6a55a88700 (LWP 1252)):
#0  0x00007f6a759794dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f6a5b40d67b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f6a5b40d3a7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f6a56289700 (LWP 1251)):
#0  0x00007f6a759794dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f6a5b40d67b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f6a5b40d3a7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f6a56a8a700 (LWP 1250)):
#0  0x00007f6a759794dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f6a5b40d67b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f6a5b40d3a7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f6a5728b700 (LWP 1249)):
#0  0x00007f6a759794dc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f6a5b40d67b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f6a5b40d3a7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f6a633b3700 (LWP 1248)):
#0  0x00007f6a732a8b29 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f6a73262805 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f6a732631fb in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f6a732633ec in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f6a7a9a0b3b in QEventDispatcherGlib::processEvents (this=0x7f6a5c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f6a7a950b3b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007f6a7a7af326 in QThread::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007f6a7adf2f45 in ?? () from /usr/lib64/libQt5DBus.so.5
#8  0x00007f6a7a7b88ec in QThreadPrivate::start(void*) () at thread/qthread_unix.cpp:367
#9  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f6a6950b700 (LWP 1247)):
#0  0x00007f6a808442c9 in poll () from /lib64/libc.so.6
#1  0x00007f6a72891377 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f6a72892f8a in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f6a6c536089 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f6a7a7b88ec in QThreadPrivate::start(void*) () at thread/qthread_unix.cpp:367
#5  0x00007f6a75973554 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f6a8084eccf in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f6a80fb94c0 (LWP 1246)):
[KCrash Handler]
#6  0x00007f6a80896a56 in __memcpy_ssse3_back () from /lib64/libc.so.6
#7  0x00007f6a7a7bb034 in QByteArray::QByteArray(char const*, int) () at ../../include/QtCore/../../src/corelib/tools/qarraydata.h:206
#8  0x00007f6a77e05179 in Baloo::DocumentDataDB::get (this=this@entry=0x7ffec4d6dbf0, docId=<optimized out>, docId@entry=76000923771471897) at /usr/src/debug/baloo5-5.48.0-1.1.x86_64/src/engine/documentdatadb.cpp:89
#9  0x00007f6a77e1e911 in Baloo::Transaction::documentData (this=<optimized out>, id=76000923771471897) at /usr/src/debug/baloo5-5.48.0-1.1.x86_64/src/engine/transaction.cpp:151
#10 0x00007f6a7ea78c9c in Baloo::File::load() () from /usr/lib64/libKF5Baloo.so.5
#11 0x00007f6a7f06c168 in ?? () from /usr/lib64/libKF5BalooWidgets.so.5
#12 0x00007f6a7a97a3f2 in QObject::event(QEvent*) () at kernel/qobject.cpp:1251
#13 0x00007f6a7b962c11 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#14 0x00007f6a7b969df0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#15 0x00007f6a7a951d29 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at ../../include/QtCore/../../src/corelib/kernel/qobject.h:142
#16 0x00007f6a7a954bdb in QCoreApplication::sendEvent (event=0x55cb6a6918e0, receiver=<optimized out>) at kernel/qcoreapplication.h:234
#17 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at kernel/qcoreapplication.cpp:1745
#18 0x00007f6a7a955018 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#19 0x00007f6a7a9a14a3 in postEventSourceDispatch (s=0x55cb69d26640) at kernel/qeventdispatcher_glib.cpp:276
#20 0x00007f6a732630be in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#21 0x00007f6a73263358 in ?? () from /usr/lib64/libglib-2.0.so.0
#22 0x00007f6a732633ec in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#23 0x00007f6a7a9a0b23 in QEventDispatcherGlib::processEvents (this=0x55cb69cd2390, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#24 0x00007f6a6c5c4641 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#25 0x00007f6a7a950b3b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#26 0x00007f6a7a9588be in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#27 0x00007f6a80b5ac59 in kdemain () from /usr/lib64/libkdeinit5_dolphin.so
#28 0x00007f6a80776feb in __libc_start_main () from /lib64/libc.so.6
#29 0x000055cb699dd7fa in _start ()

Reported using DrKonqi