https://bugs.kde.org/show_bug.cgi?id=513368
Bug ID: 513368
Summary: krdpserver memory leak during H.264 encoding without
hardware acceleration
Classification: Plasma
Product: KRdp
Version First 6.5.4
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
Description:
krdpserver leaks memory rapidly during active RDP sessions when using
software H.264 encoding (no VAAPI/GPU
available).
Environment:
- Fedora 42 KDE Spin (VM without GPU passthrough)
- krdp version 6.5.4-1.fc42
- Client: KRDC (native KDE client) and FreeRDP-based clients
Steps to reproduce:
1. Run KDE Plasma in a VM without VAAPI/GPU
2. Enable KRdp remote desktop
3. Connect with any RDP client
4. Monitor krdpserver memory usage
Expected: Memory stays stable
Actual: RSS grows ~4GB/minute during active streaming
Observed memory growth:
- Start: ~600MB
- After 2 min: ~3.8GB
- After 5 min: ~8GB+ (VM becomes unresponsive)
The leak appears to be in the software H.264 encoding path. This was
reproduced with multiple RDP clients
(KRDC, xfreerdp3), confirming it's server-side.
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