Memory leak(?) in the kernel's AMD_GPU GTT

[mr-shinigami (Ram Bhoga)]

Original post:

Super high (non-cached) memory usage, please help!

Issue My system’s non-cached memory usage is too high. It doesn’t make any sense even after summing up all the applications memory usages. I feel the suspect is AMD GPU GTT super high memory usage. (I also have full disk encryption) (32GB total system RAM) EDIT: Sometimes the the screen freezes for a few seconds when I’m doing something intensive. Eg: Frequent screen freezes (for a couple of sec) when I’m screen recording using OBS. Eg2: When the automatic crash reporting tool runs in KDE…

AMD GPU’s GTT is taking up a lot of non-cached memory (around 9GB) for no reason.

This used up a lot of memory has caused freezes and crashes when the memory is full.

The problem is gone after a restart, until it presents itself again after some use (and sleep(s)). The unusual delta in non-cached memory is clearly matching with GTT utilization (from radeontop).

Some resources and similar issues:

• Reddit - The heart of the internet
• Reddit - The heart of the internet
• Reddit - The heart of the internet
• kernel dynamic memory and used extremely high - Debian User Forums
• Reddit - The heart of the internet
• https://computergraphics.stackexchange.com/questions/4882/how-can-i-chase-down-vram-gtt-memory-leaks
• [solved] memory leak or am i just missing something? / Newbie Corner / Arch Linux Forums
• [SOLVED] RAM being taken by seemingly nothing / Newbie Corner / Arch Linux Forums
• VRAM and Memory for Integrated Graphics with Linux | kolAhilft.de

How can I escalate the memory leak and report it in the kernel?