Application: dolphin (19.07.70)
 (Compiled from sources)
Qt Version: 5.12.4
Frameworks Version: 5.60.0
Operating System: Linux 5.1.15-arch1-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
Dragged and dropped a file to the flash drive entry in the dolphin pane and selected "copy file"

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8e461bbc80 (LWP 1680))]

Thread 5 (Thread 0x7f8e37fff700 (LWP 1685)):
#0  0x00007f8e4e1d4667 in poll () from /usr/lib/libc.so.6
#1  0x00007f8e496937c0 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f8e496938ae in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f8e4c16327c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007f8e4c10a3ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007f8e4bf459c5 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007f8e4bf46bf0 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007f8e4a5f457f in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007f8e4e1df0e3 in clone () from /usr/lib/libc.so.6

Thread 4 (Thread 0x7f8e3dcb4700 (LWP 1684)):
#0  0x00007f8e4a5fa415 in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#1  0x00007f8e3e169f7c in ?? () from /usr/lib/dri/i965_dri.so
#2  0x00007f8e3e169b78 in ?? () from /usr/lib/dri/i965_dri.so
#3  0x00007f8e4a5f457f in start_thread () from /usr/lib/libpthread.so.0
#4  0x00007f8e4e1df0e3 in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7f8e3ffff700 (LWP 1683)):
#0  0x00007f8e4e1d018c in read () from /usr/lib/libc.so.6
#1  0x00007f8e49641961 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007f8e49691f70 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#3  0x00007f8e49693766 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0x00007f8e496938ae in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0x00007f8e4c16327c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6  0x00007f8e4c10a3ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#7  0x00007f8e4bf459c5 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#8  0x00007f8e4c3dfb37 in ?? () from /usr/lib/libQt5DBus.so.5
#9  0x00007f8e4bf46bf0 in ?? () from /usr/lib/libQt5Core.so.5
#10 0x00007f8e4a5f457f in start_thread () from /usr/lib/libpthread.so.0
#11 0x00007f8e4e1df0e3 in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7f8e4518f700 (LWP 1682)):
#0  0x00007f8e4e1d4667 in poll () from /usr/lib/libc.so.6
#1  0x00007f8e4a81d630 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f8e4a81f2db in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007f8e45d80079 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f8e4bf46bf0 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007f8e4a5f457f in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007f8e4e1df0e3 in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7f8e461bbc80 (LWP 1680)):
[KCrash Handler]
#6  QSharedDataPointer<KFileItemPrivate>::~QSharedDataPointer (this=0x555a9f40f6e0, __in_chrg=<optimized out>) at /usr/include/c++/9.1.0/bits/atomic_base.h:326
#7  KFileItem::~KFileItem (this=0x555a9f40f6e0, __in_chrg=<optimized out>) at /usr/src/debug/kio/src/core/kfileitem.h:47
#8  0x00007f8e4db43433 in QList<KFileItem>::node_destruct (this=0x555a9f0cde30, n=0x555a9f40f6e0) at /usr/include/qt/QtCore/qlist.h:452
#9  QList<KFileItem>::erase (it=..., this=0x555a9f0cde30) at /usr/include/qt/QtCore/qlist.h:539
#10 KCoreDirListerCache::reinsert (oldUrl=..., item=..., this=0x7f8e4dbb2500 <(anonymous namespace)::Q_QGS_kDirListerCache::innerFunction()::holder>) at /usr/src/debug/kio/src/core/kcoredirlister_p.h:309
#11 KCoreDirListerCache::processPendingUpdates (this=0x7f8e4dbb2500 <(anonymous namespace)::Q_QGS_kDirListerCache::innerFunction()::holder>) at /usr/src/debug/kio/src/core/kcoredirlister.cpp:2014
#12 0x00007f8e4c137460 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#13 0x00007f8e4c1443f8 in QTimer::timeout(QTimer::QPrivateSignal) () from /usr/lib/libQt5Core.so.5
#14 0x00007f8e4c137cd5 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#15 0x00007f8e4cbdd485 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#16 0x00007f8e4cbe69b1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#17 0x00007f8e4c10b782 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#18 0x00007f8e4c16260d in QTimerInfoList::activateTimers() () from /usr/lib/libQt5Core.so.5
#19 0x00007f8e4c162ea2 in ?? () from /usr/lib/libQt5Core.so.5
#20 0x00007f8e4969190f in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#21 0x00007f8e49693869 in ?? () from /usr/lib/libglib-2.0.so.0
#22 0x00007f8e496938ae in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#23 0x00007f8e4c163263 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#24 0x00007f8e4c10a3ac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#25 0x00007f8e4c112056 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#26 0x00007f8e4e2e6ad6 in kdemain (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/dolphin/src/main.cpp:181
#27 0x00007f8e4e109ee3 in __libc_start_main () from /usr/lib/libc.so.6
#28 0x0000555a9d70a05e in _start ()
[Inferior 1 (process 1680) detached]

Reported using DrKonqi