Bug 278844

Summary:	kio_kamera leaks memory when copying large files from camera
Product:	[Unmaintained] kio	Reporter:	Michał <mcv>
Component:	kamera	Assignee:	Marcus Meissner <marcus>
Status:	CONFIRMED ---
Severity:	normal	CC:	null
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Michał 2011-07-30 11:11:53 UTC

Version:           unspecified (using KDE 4.6.5) 
OS:                Linux

Takes too much memory when copying files from camera over PTP. It's impossible to copy 2.5GB movie file with 2GB RAM.

Reproducible: Always

Steps to Reproduce:
1. Connect camera (eg. EOS 7D) via USB.
2. Open file manager.
3. Drag&drop file sized over 2GB to local filesystem.

Actual Results:  
Process kio_kamera takes too much memory, which makes system stop (due to swapping). If kernel kills the process due to OOM, Dolphin shows message about kio_kamera process exiting unexpectedly.

Expected Results:  
Process kio_kamera copies file to local fs without storing it in memory first.

Comment 1 Marcus Meissner 2011-07-30 21:21:24 UTC

The code reads in the whole file from the camera into memory and then pushes it out.

So you are not seeing a memory leak, but more a lack of pass-through mode for data.

Comment 2 null 2018-08-05 22:41:15 UTC

> pass-through mode
As far as I can tell from a short test, as of v18.07.90 kio_kamera.so still gobbles up memory when copying a large file, so this probably has not been implemented yet.