RFR: 8289778: ZGC: incorrect use of os::free() for mountpoint string handling after JDK-8289633

[Thomas Stuefe]

On Thu, 7 Jul 2022 01:11:50 GMT, Jie Fu <jiefu at openjdk.org> wrote:

>>> I'm curious, which tests did show the bug? Because I ran GHAs and a selection of our nightlies.
>> 
>> This bug can be exposed by `java -XX:+UseZGC` on some of our cloud machines with os/tlinux, not all the platforms would crash (e.g., I didn't reproduce it on Ubuntu20.04).
>
>> Hi @DamonFool ,
>> 
>> thanks for the quick fix. Embarrassing, I should have catched this.
>> 
>> Can you please add `#include "utilities/globalDefinitions.hpp"` for the ALLOW_... macros?
>> 
>> Otherwise, apart from the comment changes below, fine.
>> 
>> Cheers, Thomas
> 
> Thanks @tstuefe for your review.
> 
> All the comments have been addressed.
> Thanks.

Hi @DamonFool, can you pls integrate this fix?

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PR: https://git.openjdk.org/jdk/pull/9387