Created attachment 133538 [details]
Complete `dmesg` output.

OS: Ubuntu Server 17.04, Linux 4.10.0
GPU: ASUS ROG Strix Radeon RX 570 4G Gaming

Performing a memory overclock using the following command:

echo 1 > /sys/class/drm/card1/device/pp_mclk_od

fails with the following output in dmesg:

VDDCI is larger than max VDDCI in VDDCI Voltage Table!

 failed to send message 18a ret is 255

 failed to send pre message 145 ret is 255

This issue seems to be related (but I'm not entirely sure) to this issue:
https://bugs.freedesktop.org/show_bug.cgi?id=100443

Complete `dmesg` output is attached.