[11u] Respin of JDK 11.0.9 with JDK-8250861 and JDK-8255603 -> 11.0.9.1

[Langer, Christoph]

Hi Severin,

> Here are my thoughts:
> 
> JDK-8250861 is a regression introduced in 11.0.9 and a serious crasher
> bug in c2. If consensus is to fix it with an async update to 11.0.9,
> then we should do the same for 8u272 (and possibly JDK 13). It looks
> like for JDK 15 it'll end up in 15.0.2. Just some more data points :)
> 
> As to JDK-8255603, my preference would be to defer to 11.0.10. While
> the fix seems benign, it appears nobody noticed this until very
> recently. 11.0.5 got out in October 2019. There is a known work-around.
> At least it seems strange to rush this fix now, where it's been out in
> the wild for about a year.

I concur. So for the OpenJDK 11.0.9 respin we'll only take JDK-8250861 then.

We'll probably cherry-pick JDK-8255603 to our downstream SapMachine 11.0.9.1 build since we have a customer case. But such a decision can obviously be made at downstream vendor's discretion.

Best regards
Christoph

> >
> > [0] https://bugs.openjdk.java.net/browse/JDK-8250861
> > [1] https://bugs.openjdk.java.net/browse/JDK-8255603
> > [2] https://mail.openjdk.java.net/pipermail/jdk-updates-dev/2020-
> October/004055.html
> >