https://bugs.kde.org/show_bug.cgi?id=510252

--- Comment #3 from [email protected] ---
(In reply to TraceyC from comment #1)
> Thank you for the bug report. I'm not able to reproduce this on git-master.
> Unfortunately the backtrace is incomplete and missing debug symbols for the
> following lines that we need to figure out exactly what's going wrong:
> 
> #3  0x00007fcc15a10386 n/a (libKF6KIOCore.so.6 + 0x3a386)
> #5  0x00007fcc133f33e8 n/a (libQt6Core.so.6 + 0x1f33e8)
> #23 0x000055b4a9f10bf3 n/a (/usr/bin/dolphin + 0x4fbf3)
> 
> Could you please install debug packages and attach a new symbolicated
> backtrace generated by using `coredumpctl gdb` in a terminal window? See
> https://community.kde.org/Guidelines_and_HOWTOs/Debugging/
> How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl
> for details about how to do this. Thanks again!

OK, since this is always reproducible for me, I assume it's better for me to
use 'gbd dolphin' for this??? 
is this better??? 

I have a kind of semi-good enough understanding of all this, so please let me
know if I'm doing something wrong with the debug logging, or if I'm still
missing something. 
Thanks

gdb dolphin
GNU gdb (GDB) 16.3
Copyright (C) 2024 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from dolphin...

This GDB supports auto-downloading debuginfo from the following URLs:
  <https://debuginfod.archlinux.org>
  <https://debuginfod.cachyos.org>
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit.
(No debugging symbols found in dolphin)
(gdb) 
(gdb) 
(gdb) run
Starting program: /usr/bin/dolphin 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffec9ff6c0 (LWP 10028)]
[New Thread 0x7fffebdff6c0 (LWP 10029)]
[New Thread 0x7fffeb5fe6c0 (LWP 10030)]
[New Thread 0x7fffcb5ff6c0 (LWP 10032)]
[New Thread 0x7fffcadfe6c0 (LWP 10033)]
[New Thread 0x7fffca5fd6c0 (LWP 10034)]
[New Thread 0x7fffc9dfc6c0 (LWP 10035)]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[New Thread 0x7fffc95fb6c0 (LWP 10036)]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[Detaching after vfork from child process 10039]
[Detaching after vfork from child process 10041]
[New Thread 0x7fffc8dfa6c0 (LWP 10043)]
[Detaching after vfork from child process 10045]
[New Thread 0x7fffb39ff6c0 (LWP 10047)]
[New Thread 0x7fffb30286c0 (LWP 10048)]
[New Thread 0x7fffb28276c0 (LWP 10049)]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[Detaching after vfork from child process 10051]
[New Thread 0x7fffb20266c0 (LWP 10053)]
[Detaching after vfork from child process 10057]
kf.coreaddons: "Could not load plugin from
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0:
cannot open shared object file: No such file or directory"
kf.coreaddons: "Could not load plugin from
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0:
cannot open shared object file: No such file or directory"
[New Thread 0x7fffb18256c0 (LWP 10060)]
kf.coreaddons: "Could not load plugin from
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0:
cannot open shared object file: No such file or directory"
kf.coreaddons: "Could not load plugin from
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0:
cannot open shared object file: No such file or directory"
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[Detaching after vfork from child process 10063]
[Detaching after vfork from child process 10065]
[Detaching after vfork from child process 10067]
[Detaching after vfork from child process 10069]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[Detaching after vfork from child process 10071]
[Detaching after vfork from child process 10074]
bluedevil.kio_bluetooth: Kio Bluetooth instanced!
bluedevil.kio_bluetooth: Setting host:  ""
bluedevil.kio_bluetooth: Stat:  QUrl("bluetooth:/")
[Detaching after vfork from child process 10077]
[Detaching after vfork from child process 10080]
[Detaching after vfork from child process 10082]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
kf.kio.workers.smb: Failed to resolve any WS transport address. This suggests
that DNS resolution may be broken.
QList(QUrl("http://backup-nas:5357/48f803ab-a5f0-4ea4-8300-654d05046a8d";))
[Detaching after vfork from child process 10098]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: could not find entry for charset= "Other encoding ()"
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
kf.kio.core: Connection::send() called with connection not inited
kf.kio.core: An error occurred during write. The worker terminates now.
kf.kio.core: Internal error: itemsInUse did not contain
QUrl("smb://[email protected]/")
kf.kio.core: Fatal Error: HUH? Lister KDirLister(0x5555563e6bd0) is supposed to
be listing, but has no job!

Thread 1 "dolphin" received signal SIGABRT, Aborted.
0x00007ffff48aa0db in pthread_kill () from /usr/lib/libc.so.6
(gdb) backtracce
Undefined command: "backtracce".  Try "help".
(gdb) backtrace
#0  0x00007ffff48aa0db in pthread_kill () from /usr/lib/libc.so.6
#1  0x00007ffff48447c8 in raise () from /usr/lib/libc.so.6
#2  0x00007ffff482560d in abort () from /usr/lib/libc.so.6
#3  0x00007ffff779f19d in ?? () from /usr/lib/libKF6KIOCore.so.6
#4  0x00007ffff786a5bb in ?? () from /usr/lib/libKF6KIOCore.so.6
#5  0x00007ffff51eed36 in ?? () from /usr/lib/libQt6Core.so.6
#6  0x00007ffff6fd9241 in KJob::result(KJob*, KJob::QPrivateSignal) () from
/usr/lib/libKF6CoreAddons.so.6
#7  0x00007ffff6fdf95d in KJob::emitResult() () from
/usr/lib/libKF6CoreAddons.so.6
#8  0x00007ffff51eed36 in ?? () from /usr/lib/libQt6Core.so.6
#9  0x00007ffff789db73 in ?? () from /usr/lib/libKF6KIOCore.so.6
#10 0x00007ffff7898324 in ?? () from /usr/lib/libKF6KIOCore.so.6
#11 0x00007ffff51eed36 in ?? () from /usr/lib/libQt6Core.so.6
#12 0x00007ffff51dceb1 in QObject::event(QEvent*) () from
/usr/lib/libQt6Core.so.6
#13 0x00007ffff6302059 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
()
   from /usr/lib/libQt6Widgets.so.6
#14 0x00007ffff517ae88 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
()
   from /usr/lib/libQt6Core.so.6
#15 0x00007ffff517b238 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) ()
   from /usr/lib/libQt6Core.so.6
#16 0x00007ffff5493fc0 in ?? () from /usr/lib/libQt6Core.so.6
#17 0x00007ffff1be5b69 in ?? () from /usr/lib/libglib-2.0.so.0
#18 0x00007ffff1be6f88 in ?? () from /usr/lib/libglib-2.0.so.0
#19 0x00007ffff1be70c2 in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#20 0x00007ffff5490bfb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt6Core.so.6
#21 0x00007ffff5186936 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt6Core.so.6
--Type <RET> for more, q to quit, c to continue without paging--
#22 0x00007ffff517fb1c in QCoreApplication::exec() () from
/usr/lib/libQt6Core.so.6
#23 0x00005555555a3b82 in ?? ()
#24 0x00007ffff4827b8b in ?? () from /usr/lib/libc.so.6
#25 0x00007ffff4827c4b in __libc_start_main () from /usr/lib/libc.so.6
#26 0x00005555555a53d5 in ?? ()
gdb dolphin
GNU gdb (GDB) 16.3
Copyright (C) 2024 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from dolphin...

This GDB supports auto-downloading debuginfo from the following URLs:
  <https://debuginfod.archlinux.org>
  <https://debuginfod.cachyos.org>
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit.
(No debugging symbols found in dolphin)
(gdb) 
(gdb) 
(gdb) run
Starting program: /usr/bin/dolphin 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffec9ff6c0 (LWP 10028)]
[New Thread 0x7fffebdff6c0 (LWP 10029)]
[New Thread 0x7fffeb5fe6c0 (LWP 10030)]
[New Thread 0x7fffcb5ff6c0 (LWP 10032)]
[New Thread 0x7fffcadfe6c0 (LWP 10033)]
[New Thread 0x7fffca5fd6c0 (LWP 10034)]
[New Thread 0x7fffc9dfc6c0 (LWP 10035)]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[New Thread 0x7fffc95fb6c0 (LWP 10036)]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[Detaching after vfork from child process 10039]
[Detaching after vfork from child process 10041]
[New Thread 0x7fffc8dfa6c0 (LWP 10043)]
[Detaching after vfork from child process 10045]
[New Thread 0x7fffb39ff6c0 (LWP 10047)]
[New Thread 0x7fffb30286c0 (LWP 10048)]
[New Thread 0x7fffb28276c0 (LWP 10049)]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[Detaching after vfork from child process 10051]
[New Thread 0x7fffb20266c0 (LWP 10053)]
[Detaching after vfork from child process 10057]
kf.coreaddons: "Could not load plugin from
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0:
cannot open shared object file: No such file or directory"
kf.coreaddons: "Could not load plugin from
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0:
cannot open shared object file: No such file or directory"
[New Thread 0x7fffb18256c0 (LWP 10060)]
kf.coreaddons: "Could not load plugin from
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0:
cannot open shared object file: No such file or directory"
kf.coreaddons: "Could not load plugin from
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: Cannot load library
/usr/lib/qt6/plugins/kf6/thumbcreator/appimagethumbnail.so: libappimage.so.1.0:
cannot open shared object file: No such file or directory"
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[Detaching after vfork from child process 10063]
[Detaching after vfork from child process 10065]
[Detaching after vfork from child process 10067]
[Detaching after vfork from child process 10069]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
[Detaching after vfork from child process 10071]
[Detaching after vfork from child process 10074]
bluedevil.kio_bluetooth: Kio Bluetooth instanced!
bluedevil.kio_bluetooth: Setting host:  ""
bluedevil.kio_bluetooth: Stat:  QUrl("bluetooth:/")
[Detaching after vfork from child process 10077]
[Detaching after vfork from child process 10080]
[Detaching after vfork from child process 10082]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
kf.kio.workers.smb: Failed to resolve any WS transport address. This suggests
that DNS resolution may be broken.
QList(QUrl("http://backup-nas:5357/48f803ab-a5f0-4ea4-8300-654d05046a8d";))
[Detaching after vfork from child process 10098]
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: could not find entry for charset= "Other encoding ()"
org.kde.dolphin: Could not load default global viewproperties
org.kde.dolphin: Could not load default global viewproperties
kf.kio.core: Connection::send() called with connection not inited
kf.kio.core: An error occurred during write. The worker terminates now.
kf.kio.core: Internal error: itemsInUse did not contain
QUrl("smb://[email protected]/")
kf.kio.core: Fatal Error: HUH? Lister KDirLister(0x5555563e6bd0) is supposed to
be listing, but has no job!

Thread 1 "dolphin" received signal SIGABRT, Aborted.
0x00007ffff48aa0db in pthread_kill () from /usr/lib/libc.so.6
(gdb) backtracce
Undefined command: "backtracce".  Try "help".
(gdb) backtrace
#0  0x00007ffff48aa0db in pthread_kill () from /usr/lib/libc.so.6
#1  0x00007ffff48447c8 in raise () from /usr/lib/libc.so.6
#2  0x00007ffff482560d in abort () from /usr/lib/libc.so.6
#3  0x00007ffff779f19d in ?? () from /usr/lib/libKF6KIOCore.so.6
#4  0x00007ffff786a5bb in ?? () from /usr/lib/libKF6KIOCore.so.6
#5  0x00007ffff51eed36 in ?? () from /usr/lib/libQt6Core.so.6
#6  0x00007ffff6fd9241 in KJob::result(KJob*, KJob::QPrivateSignal) () from
/usr/lib/libKF6CoreAddons.so.6
#7  0x00007ffff6fdf95d in KJob::emitResult() () from
/usr/lib/libKF6CoreAddons.so.6
#8  0x00007ffff51eed36 in ?? () from /usr/lib/libQt6Core.so.6
#9  0x00007ffff789db73 in ?? () from /usr/lib/libKF6KIOCore.so.6
#10 0x00007ffff7898324 in ?? () from /usr/lib/libKF6KIOCore.so.6
#11 0x00007ffff51eed36 in ?? () from /usr/lib/libQt6Core.so.6
#12 0x00007ffff51dceb1 in QObject::event(QEvent*) () from
/usr/lib/libQt6Core.so.6
#13 0x00007ffff6302059 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
()
   from /usr/lib/libQt6Widgets.so.6
#14 0x00007ffff517ae88 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
()
   from /usr/lib/libQt6Core.so.6
#15 0x00007ffff517b238 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) ()
   from /usr/lib/libQt6Core.so.6
#16 0x00007ffff5493fc0 in ?? () from /usr/lib/libQt6Core.so.6
#17 0x00007ffff1be5b69 in ?? () from /usr/lib/libglib-2.0.so.0
#18 0x00007ffff1be6f88 in ?? () from /usr/lib/libglib-2.0.so.0
#19 0x00007ffff1be70c2 in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#20 0x00007ffff5490bfb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt6Core.so.6
#21 0x00007ffff5186936 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt6Core.so.6
--Type <RET> for more, q to quit, c to continue without paging--
#22 0x00007ffff517fb1c in QCoreApplication::exec() () from
/usr/lib/libQt6Core.so.6
#23 0x00005555555a3b82 in ?? ()
#24 0x00007ffff4827b8b in ?? () from /usr/lib/libc.so.6
#25 0x00007ffff4827c4b in __libc_start_main () from /usr/lib/libc.so.6
#26 0x00005555555a53d5 in ?? ()

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