Bug 460244

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE (everything done with Dolphin)
1. I tried to copy a file from my computer to an external hard drive connected to my router but I got an error.
2. I noticed a .mkv.part file on the hard drive.
3. I tried to delete it.

OBSERVED RESULT
Red error message: [16] Device or resource busy
Dolphin doesn't crash

EXPECTED RESULT
Deletion of the file

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.26
KDE Plasma Version: 5.26.0
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Kernel Version: 5.15.0-50-generic (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-9300H CPU @ 2.40GHz
Memory: 7.6 Gio of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630
Manufacturer: LENOVO
Product Name: 81LK
System Version: IdeaPad L340-15IRH Gaming

ADDITIONAL INFORMATION
(first time I report a bug... Hope it will help)
Thread 1 "dolphin" received signal SIGINT, Interrupt.
0x00007ffff563c99f in __GI___poll (fds=0x555556124060, nfds=13, timeout=279)
    at ../sysdeps/unix/sysv/linux/poll.c:29
29      ../sysdeps/unix/sysv/linux/poll.c: No such file or directory.

#1  0x00007ffff361136e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff36114a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff5c0db82 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff5bb1b3b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffff5bb9ce4 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00005555555a56e3 in ?? ()
#7  0x00007ffff554e083 in __libc_start_main (main=0x5555555a4590, argc=1, argv=0x7fffffffdd98, 
    init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdd88)
    at ../csu/libc-start.c:308
#8  0x00005555555a5aae in ?? ()