Application: dolphin (15.12.3)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-57-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
1. Get a folder which contains files the user has no access to (In my case a full system backup done with rsync)
2. Use Dolphin to copy this folder
--> A popup tells you that some files can't be copied (One popup for every file -_-)
3. cancel the copy process using the stop button within the notification area
-> Dolphin crashes

The crash can be reproduced every time.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fce0bae68c0 (LWP 3372))]

Thread 2 (Thread 0x7fcdff3ea700 (LWP 3375)):
#0  0x00007fce1e8f869d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fce15133740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce150efe84 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce150f0340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fce150f04ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fce197057eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fce196acb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fce194c9834 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fce194ce7be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fce15c7c6ba in start_thread (arg=0x7fcdff3ea700) at pthread_create.c:333
#10 0x00007fce1e90882d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fce0bae68c0 (LWP 3372)):
[KCrash Handler]
#6  0x00007fce1a045800 in vtable for QPaintDevice () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#7  0x00007fce196bfd27 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fce1cf01b99 in KDialogJobUiDelegate::Private::next() () from /usr/lib/x86_64-linux-gnu/libKF5JobWidgets.so.5
#9  0x00007fce196dec01 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fce1a1b205c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fce1a1b7516 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007fce196af38b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fce196b1786 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fce197053c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fce150f01a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fce150f0400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007fce150f04ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fce197057cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fce196acb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fce196b4bec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fce1ec28e2b in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#22 0x00007fce1e822830 in __libc_start_main (main=0x400710 <main>, argc=1, argv=0x7ffd7e156e78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd7e156e68) at ../csu/libc-start.c:291
#23 0x0000000000400749 in _start ()

Reported using DrKonqi