RFR: 8333871: check sysinfo return values [v2]

[Matthias Baesken]

On Mon, 17 Nov 2025 01:02:42 GMT, David Holmes <dholmes at openjdk.org> wrote:

> I think this is completely unnecessary - `sysinfo` on Linux can't really fail, the only error possible is EFAULT if you pass a bad pointer for the struct - so don't do that.
> 
> Replacing numbers with words in the logging could break external parsing scripts.

Hi David , not sure how likely those failures are.  Back then in the review of [JDK-8333522](https://bugs.openjdk.org/browse/JDK-8333522)  we discussed the checking might be needed and that's why the JBS issue was created. 
Checking other projects for potential sysinfo failures it seems that the 'bad pointer' issue you referred to is indeed the most likely one.
But if it is really 'completely unnecessary' we should probably kick out the checks we do at a number of places in the codebase ?
https://github.com/search?q=repo%3Aopenjdk%2Fjdk+%22sysinfo%28%22&type=code

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PR Comment: https://git.openjdk.org/jdk/pull/28317#issuecomment-3546401054