RFR: 8376491: ZGC: crash in __memset_evex_unaligned_erms when initializing heap using high values for -XX:ConcGCThreads [v2]

[Guanqiang Han]

On Mon, 9 Feb 2026 06:57:41 GMT, Axel Boldt-Christmas <aboldtch at openjdk.org> wrote:

>> Guanqiang Han has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:
>> 
>>  - Drop regression test
>>  - Merge remote-tracking branch 'upstream/master' into 8376491
>>  - fix test func
>>  - fix bug 8376491
>
> lgtm.

Hi @xmas92 @stefank , Thank you for the reviews ! I have integrated this PR, could you please sponsor it ? Thanks!

> test/hotspot/jtreg/gc/z/TestZValueStorageAlloc.java line 46:
> 
>> 44:         output.shouldNotContain("# A fatal error has been detected by the Java Runtime Environment");
>> 45:     }
>> 46: }
> 
> Suggestion:
> 
> }

Hi @xmas92 @stefank , Based on the feedback, I’ve removed the regression test since it doesn’t seem to add enough value and may be slow on some machines/environments. Could you please take another look?

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PR Comment: https://git.openjdk.org/jdk/pull/29460#issuecomment-3870463243
PR Review Comment: https://git.openjdk.org/jdk/pull/29460#discussion_r2777454849