sudo find / -size +5G -ls
listed debug files with more than 8GB size at /sys/kernel/debug/dri/n/amdgpu_vram
(n is the number of GPUs)
These might be useless debug files.
Cannot delete them (error "Operation not permited").
How to delete these files?
These are not files in the traditional sense.
The entire /sys filesystem is a virtual file system, which maps various system functions as files. They are not stored on disk; they're merely mechanisms to access various kernel functions. In this case, the file is the video RAM. The files can serve as a debugging interface, thus the naming.
Removing them does literally not make sense - as they're an representation of a physical feature of your computer system. That's why you're not allowed to remove them.
In short: Do not touch anything inside /sys or /proc unless you know what you are doing. You may crash your system. Reading them is generally safe - worst case will typically garble your terminal with random data.
There's lots of interesting stuff in /sys and /proc, that can tell you a whole lot about how your system operates, both the Linux kernel, and physical parts of your computer.
