kernel is tainted, why?

[Andrea Borgia <andrea@borgia.bo.it>]

Hi.

Running "testing" with the "5.3.0-3-amd64 #1 Debian 5.3.15-1" kernel 
package on ASRock B450-HDV mobo with Ryzen 2200G cpu, I noticed that the 
kernel is marked as tainted, with the following flags:
"G        W        "

According to the docs[1] this means:
* all modules are GPL-compatible
* a warning was issued in the past

Actually, the amdgpu driver is pretty chatty in dmesg's logs: could that 
be the reason for the tainting?

It's more of a curiosity, the system at the moment seems to be otherwise 
running fine.

Regards,
Andrea.


[1] https://www.kernel.org/doc/html/v4.15/admin-guide/tainted-kernels.html