SUMMARY
kdeinit5 crashes often when use search file feature in dolphin, seems to crash when directories' or files' names contain something other than latin letters or numbers.

Application: kdeinit5 (kdeinit5), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f0ef878d970 in KCoreDirListerCache::slotResult (this=0x7f0ef88053e0 <_ZZN12_GLOBAL__N_121Q_QGS_kDirListerCache13innerFunctionEvE6holder.lto_priv.0>, j=<optimized out>) at /usr/src/debug/kf5-kio-5.82.0-2.fc34.x86_64/src/core/kcoredirlister.cpp:1291
#5  0x00007f0f098704b0 in QtPrivate::QSlotObjectBase::call (a=0x7ffe4fcf23e0, r=<optimized out>, this=0x56186c23c1d0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#6  doActivate<false> (sender=0x56186c286390, signal_index=6, argv=0x7ffe4fcf23e0) at kernel/qobject.cpp:3886
#7  0x00007f0f0986a9e7 in QMetaObject::activate (sender=sender@entry=0x56186c286390, m=m@entry=0x7f0f093eed00 <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe4fcf23e0) at kernel/qobject.cpp:3946
#8  0x00007f0f09398400 in KJob::result (this=this@entry=0x56186c286390, _t1=<optimized out>, _t1@entry=0x56186c286390, _t2=...) at /usr/src/debug/kf5-kcoreaddons-5.82.0-1.fc34.x86_64/x86_64-redhat-linux-gnu/src/lib/KF5CoreAddons_autogen/include/moc_kjob.cpp:636
#9  0x00007f0f0939c8db in KJob::finishJob (this=0x56186c286390, emitResult=<optimized out>) at /usr/src/debug/kf5-kcoreaddons-5.82.0-1.fc34.x86_64/src/lib/jobs/kjob.cpp:94
#10 0x00007f0f098704b0 in QtPrivate::QSlotObjectBase::call (a=0x7ffe4fcf2510, r=<optimized out>, this=0x56186c1acad0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#11 doActivate<false> (sender=0x56186c1a3360, signal_index=5, argv=0x7ffe4fcf2510) at kernel/qobject.cpp:3886
#12 0x00007f0f0986a9e7 in QMetaObject::activate (sender=<optimized out>, m=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffe4fcf2510) at kernel/qobject.cpp:3946
#13 0x00007f0ef87429aa in KIO::SlaveInterface::error (this=<optimized out>, _t1=<optimized out>, _t2=...) at /usr/src/debug/kf5-kio-5.82.0-2.fc34.x86_64/x86_64-redhat-linux-gnu/src/core/KF5KIOCore_autogen/include/moc_slaveinterface.cpp:452
#14 0x00007f0ef87421d7 in KIO::SlaveInterface::dispatch (this=0x56186c1a3360, _cmd=102, rawdata=...) at /usr/src/debug/kf5-kio-5.82.0-2.fc34.x86_64/src/core/slaveinterface.cpp:181
#15 0x00007f0ef873a60d in KIO::SlaveInterface::dispatch (this=0x56186c1a3360) at /usr/src/debug/kf5-kio-5.82.0-2.fc34.x86_64/src/core/slaveinterface.cpp:78
#16 0x00007f0ef8743c62 in KIO::Slave::gotInput (this=0x56186c1a3360) at /usr/src/debug/kf5-kio-5.82.0-2.fc34.x86_64/src/core/slave.cpp:392
#17 0x00007f0f098704b0 in QtPrivate::QSlotObjectBase::call (a=0x7ffe4fcf2730, r=<optimized out>, this=0x56186c1a2530) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#18 doActivate<false> (sender=0x56186c1a0c30, signal_index=3, argv=0x7ffe4fcf2730) at kernel/qobject.cpp:3886
#19 0x00007f0f09867257 in QObject::event (this=0x56186c1a0c30, e=0x56186c24cef0) at kernel/qobject.cpp:1314
#20 0x00007f0f0983ff2b in doNotify (event=0x56186c24cef0, receiver=0x56186c1a0c30) at kernel/qcoreapplication.cpp:1153
#21 QCoreApplication::notify (event=<optimized out>, receiver=<optimized out>, this=<optimized out>) at kernel/qcoreapplication.cpp:1139
#22 QCoreApplication::notifyInternal2 (receiver=0x56186c1a0c30, event=0x56186c24cef0) at kernel/qcoreapplication.cpp:1063
#23 0x00007f0f09842c76 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x56186c13bfb0) at kernel/qcoreapplication.cpp:1817
#24 0x00007f0f0988cc57 in postEventSourceDispatch (s=0x56186c170e00) at kernel/qeventdispatcher_glib.cpp:277
#25 0x00007f0f07fe14cf in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#26 0x00007f0f080354e8 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#27 0x00007f0f07fdec03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#28 0x00007f0f0988c6f8 in QEventDispatcherGlib::processEvents (this=0x56186c16e270, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#29 0x00007f0f0983e9b2 in QEventLoop::exec (this=this@entry=0x7ffe4fcf2bb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#30 0x00007f0f0a37985e in FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (iteratedDirs=..., itemValidator=..., directory=..., this=0x7ffe4fcf3380) at /usr/include/qt5/QtCore/qflags.h:121
#31 FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (this=this@entry=0x7ffe4fcf3380, directory=..., itemValidator=..., iteratedDirs=...) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:100
#32 0x00007f0f0a379b43 in FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (iteratedDirs=..., itemValidator=..., directory=..., this=0x7ffe4fcf3380) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:151
#33 FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (this=this@entry=0x7ffe4fcf3380, directory=..., itemValidator=..., iteratedDirs=...) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:100
#34 0x00007f0f0a379b43 in FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (iteratedDirs=..., itemValidator=..., directory=..., this=0x7ffe4fcf3380) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:151
#35 FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (this=this@entry=0x7ffe4fcf3380, directory=..., itemValidator=..., iteratedDirs=...) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:100
#36 0x00007f0f0a379b43 in FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (iteratedDirs=..., itemValidator=..., directory=..., this=0x7ffe4fcf3380) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:151
#37 FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (this=this@entry=0x7ffe4fcf3380, directory=..., itemValidator=..., iteratedDirs=...) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:100
#38 0x00007f0f0a379b43 in FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (iteratedDirs=..., itemValidator=..., directory=..., this=0x7ffe4fcf3380) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:151
#39 FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (this=this@entry=0x7ffe4fcf3380, directory=..., itemValidator=..., iteratedDirs=...) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:100
#40 0x00007f0f0a379b43 in FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (iteratedDirs=..., itemValidator=..., directory=..., this=0x7ffe4fcf3380) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:151
#41 FileNameSearchProtocol::searchDirectory(QUrl const&, std::function<bool (KFileItem const&)> const&, QSet<QString>&) (this=this@entry=0x7ffe4fcf3380, directory=..., itemValidator=..., iteratedDirs=...) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:100
#42 0x00007f0f0a37a08a in FileNameSearchProtocol::listDir (this=0x7ffe4fcf3380, url=...) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:95
#43 0x00007f0ef873749e in KIO::SlaveBase::dispatch (this=0x7ffe4fcf3380, command=71, data=...) at /usr/src/debug/kf5-kio-5.82.0-2.fc34.x86_64/src/core/slavebase.cpp:1271
#44 0x00007f0ef872ee26 in KIO::SlaveBase::dispatchLoop (this=0x7ffe4fcf3380) at /usr/src/debug/kf5-kio-5.82.0-2.fc34.x86_64/src/core/slavebase.cpp:335
#45 0x00007f0f0a37a56f in kdemain (argc=<optimized out>, argv=0x7ffe4fcf3350) at /usr/src/debug/kio-extras-20.12.2-2.fc34.x86_64/filenamesearch/kio_filenamesearch.cpp:203
#46 0x000056186afec5ab in launch (argc=4, _name=0x56186c157398 "/usr/lib64/qt5/plugins/kf5/kio/filenamesearch.so", args=0x56186c15743e "", cwd=<optimized out>, envc=0, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x56186afef194 "0") at /usr/src/debug/kf5-kinit-5.82.0-1.fc34.x86_64/src/kdeinit/kinit.cpp:692
#47 0x000056186afedd4b in handle_launcher_request (sock=4, who=<optimized out>) at /usr/src/debug/kf5-kinit-5.82.0-1.fc34.x86_64/src/kdeinit/kinit.cpp:1130
#48 0x000056186afee380 in handle_requests (waitForPid=0) at /usr/src/debug/kf5-kinit-5.82.0-1.fc34.x86_64/src/kdeinit/kinit.cpp:1323
#49 0x000056186afe90e1 in main (argc=2, argv=<optimized out>) at /usr/src/debug/kf5-kinit-5.82.0-1.fc34.x86_64/src/kdeinit/kinit.cpp:1761
[Inferior 1 (process 124975) detached]


STEPS TO REPRODUCE
1. Try to search files by name or contents in directory tree with non-english names.
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Operating System: Fedora 34
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2
Kernel Version: 5.11.21-300.fc34.x86_64
OS Type: 64-bit
Graphics Platform: X11

ADDITIONAL INFORMATION