Note that it appears that a large number of the segfaults which Michael (phoronix) is reporting may be coming from a software issue. In particular, people on the phoronix forums are reporting that conftest segfaults are a known software issue and also one has reported that he was able to reproduce the conftest segfaults on an intel CPU.

So not saying that there's not a problem with Ryzen, but it is possible a large number of the errors are false positives arising from a known software issue.

I would wait Michael runs the same test on an Intel CPU with no problems to pass judgement.