https://bugs.kde.org/show_bug.cgi?id=516950
Bug ID: 516950
Summary: Plasmashell leaks File Descriptors (4 per hover) on
Task Manager thumbnails until it crashes at 1024 FD
limit
Classification: Plasma
Product: plasmashell
Version First 6.5.5
Reported In:
Platform: Ubuntu
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: Task Manager and Icons-Only Task Manager widgets
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
I have discovered a consistent file descriptor leak in Plasma 6. Every time a
window thumbnail preview is triggered in the Task Manager, the target
application (Chrome, Edge, etc.) gains several file descriptors that are never
released after the preview is closed.
System Info:
KDE Plasma Version: 6.5.5
Session Type: Wayland
Graphics: NVIDIA 580.126.09
Steps to reproduce:
Open a browser (e.g., Microsoft Edge).
Monitor FD count: watch "ls /proc/$(pidof plasmashell)/fd | wc -l"
Hover the mouse over the taskbar icon to show the thumbnail preview.
Move the mouse away to hide the preview.
Re-check FD count.
Actual Results:
The FD count increases by exactly 4 every time (e.g., from 773 to 777, then to
781). These descriptors are leaked permanently until the browser is restarted.
AFter it reaches 1024 plasmashell crashes.
Expected Results:
All file descriptors created for the Screencast/PipeWire stream should be
closed once the preview is hidden.
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