I have a Ryzen 2700. The early first-generation Ryzen processors have a bug that causes segmentation faults under heavy load. There is a “kill Ryzen” repository on Github that uses GCC to force the bug to show itself.
The second generation Ryzen processors work correctly.
You mean what is referred to here:
And https://techreport.com/news/32459/amd-ships-revised-ryzen-cpus-with-a-compile-bug-fix