[dolphin] [Bug 504906] New: Dolphin crashes when trying to connect to SMB fileshare.

[Ser Drakström]

https://bugs.kde.org/show_bug.cgi?id=504906

            Bug ID: 504906
           Summary: Dolphin crashes when trying to connect to SMB
                    fileshare.
    Classification: Applications
           Product: dolphin
      Version First 25.04.1
       Reported In:
          Platform: Manjaro
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: huux at protonmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 181822
  --> https://bugs.kde.org/attachment.cgi?id=181822&action=edit
dolphin logs. crashing and working.

SUMMARY
Dolphin crashes when accessing an SMB share using an unsupported protocol.
After a few retries, it may not crash.

STEPS TO REPRODUCE
1. Open Dolphin
2. In the address bar, enter smb://192.168.1.x/
3. Enter login credentials when prompted
4. Press Enter
5. Dolphin crashes (note: may not happen every time)

OBSERVED RESULT
Dolphin crashes with a core dump. Terminal output includes:
smbXcli_negprot_smb1_done: No compatible protocol selected by server.
kf.kio.core: Internal error: itemsInUse did not contain
QUrl("smb://x@192.168.1.x/")
kf.kio.core: Fatal Error: HUH? Lister ... is supposed to be listing, but has no
job!
zsh: IOT instruction (core dumped) dolphin

EXPECTED RESULT
Dolphin should handle the error gracefully and show a clear message such as:
"No compatible SMB protocol found."
It should not crash.

SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
Kernel Version: 6.14.6-2-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5700X3D
Memory: 31.3 GiB
Graphics Processor: NVIDIA GeForce RTX 4080

ADDITIONAL INFORMATION
The crash seems to be triggered by SMB protocol negotiation failure with the
server.
KIO does not appear to handle this edge case correctly, leading to a crash
rather than a fallback or error message.

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