nothing noticeable happened after the crash

Reproducible: Sometimes




Application: Baloo File Indexing Daemon (baloo_file), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  0x00007fcf31761418 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007fcf3176301a in __GI_abort () at abort.c:89
#8  0x00007fcf2ff53002 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#9  0x00007fcf2ff486a5 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#10 0x00007fcf2ff49863 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#11 0x00007fcf2ff49ac9 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#12 0x00007fcf2ff4b704 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#13 0x00007fcf2ff4f857 in mdb_cursor_del () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#14 0x00007fcf2ff50dc0 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#15 0x00007fcf329097ae in Baloo::DocumentDataDB::del(unsigned long long) () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#16 0x00007fcf329231cf in Baloo::WriteTransaction::removeDocument(unsigned long long) () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#17 0x0000000000429632 in Baloo::MetadataMover::removeMetadata(Baloo::Transaction*, QString const&) ()
#18 0x00000000004296cd in Baloo::MetadataMover::removeFileMetadata(QString const&) ()
#19 0x00007fcf32448e4f in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x0000000000432f05 in Baloo::PendingFileQueue::removeFileIndex(QString const&) ()
#21 0x0000000000427856 in Baloo::PendingFileQueue::processCache() ()
#22 0x00007fcf32448e4f in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fcf32455878 in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fcf32449e53 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fcf3241a60c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fcf3246f89d in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fcf3246fdd9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007fcf2e9be1a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007fcf2e9be400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fcf2e9be4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fcf32470a7f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fcf32417dea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007fcf3241fe8c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x000000000041698c in main ()