Integrated: 8372380: Make hs_err reporting more robust for unattached threads

[David Holmes]

On Mon, 24 Nov 2025 02:14:15 GMT, David Holmes <dholmes at openjdk.org> wrote:

> There were a number of places where the code called by hs_err reporting assumed/required an attached current thread. These would then cause secondary failures during hs_err reporting. Using a simple example of an unattached thread causing a SEGV I went through and eliminated all the problems I encountered. In some cases the thread dependency was obvious and easy to address directly, but in others we just skip that section at the top-level.
> 
> Testing:
>  - manual inspection of hs_err file, for different GCs
>  - tiers 1-3 sanity
> 
> Thanks

This pull request has now been integrated.

Changeset: 6e920fbd
Author:    David Holmes <dholmes at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/6e920fbdab17201886804bb53b59188b362f541d
Stats:     11 lines in 4 files changed: 6 ins; 0 del; 5 mod

8372380: Make hs_err reporting more robust for unattached threads

Reviewed-by: shade, aboldtch, kevinw

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PR: https://git.openjdk.org/jdk/pull/28470