[jools70]

Kodi 21 has a bug that manifests itself as a memory leak, which is seen after a day of uptime: multiple lines  of

cma_alloc: linux,cma: alloc failed, req-size: 205 pages, ret: -16

in dmesg. The immediate fix is to reboot the system, but the problem appears again after a day or two. The memory is actually not low on the system, and there is also cma-memory available. I'm on rpi5 debian 12 and using:
Kodi Media Center 21.1 (21.1.0) Git:20240830-39fb0e3db7
Copyright © 2005-2021 Team Kodi - http://kodi.tv

dmesg errors:
https://pastebin.com/T7hSJbnB

[sarbes]

How have you determined that there is a memory leak?

[jools70]

The error says that it fails to allocate memory.

[izprtxqkft]

looks more like a generic raspberry issue with multiple causes/resolutions when googled

https://duckduckgo.com/?q=cma%3A+cma_all...led&ia=web

try providing a Debug Log so we have context to the error

[sarbes]

The error says that it fails to allocate memory.

That's no basis to attest a bug in Kodi.

[jools70]

Yes it is.

I can try to provide logs the next time it happens...

[MatteN]

You will probably not get any help without a log that shows the "error" since nobody else had the same problem.

[Neo1973]

A memory leak caused by Kodi isn't impossible but very unlikely. I run Kodi on a RPi3B with a measly 1GB of memory and have no troubles to go multiple days without restarting the system.