Comment # 5 on bug 1220085 from Miroslav Franc

(In reply to Sarah Kriesch from comment #4)
> Should that be forwarded to IBM?

As far as I remember, IBM is aware.   KCSAN practically doesn't work on s390x,
i.e. shows way too many false positives.  I hit this when I tried to debug
certain memory issues on a LinuxONE machine.  It's definitely on my radar, but
I don't think it's a priority for anybody right now.  However, it's a real
problem, so I don't want to close the bug without any meaningful resolution. 
At the same time I doubt it will be fixed anytime soon.