This looks extremely similar to the issues that I have been having with my server since updating to 7.3.1. I even tried downgrading to 7.3.0 and the issues remain. I've been down a similar rabbit hole as you testing RAM, updating MOBO BIOS, recreating Docker images, and nothing seems to be working - I am still seeing frequent kernel panic errors and having general server instability. @m3sl thank you for providing a summary of what fixed the issue for you. Could you let me know if you have had any additional issues since your reply on June 2nd? I moved to internal boot so unfortunately downgrading isn't super straightforward for me, but seems like I might have to figure out a way to get off of 7.3.0.