Integrated: 8376287: Crashes when using -XX:ObjArrayMarkingStride=0

[Guanqiang Han]

On Thu, 29 Jan 2026 03:46:29 GMT, Guanqiang Han <ghan at openjdk.org> wrote:

> Please review this change, it addresses a trivial issue. Thanks!
> 
> **Description:**
> 
> This is a trivial issue caused by the invalid value of -XX:ObjArrayMarkingStride=0, which results in a division by zero in the PartialArrayTaskStepper::start() method.
> https://github.com/openjdk/jdk/blob/2529e2fe8dfe9685033bb0ae558266b8bc3cf95c/src/hotspot/share/gc/shared/partialArrayTaskStepper.inline.hpp#L39-L40
> 
> **Fix:**
> 
> Restrict the ObjArrayMarkingStride to positive values.
> 
> **Test:**
> 
> GHA

This pull request has now been integrated.

Changeset: e3b5b261
Author:    Guanqiang Han <ghan at openjdk.org>
Committer: Thomas Schatzl <tschatzl at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/e3b5b261af6acbe7ab074f301c70283b06c17d39
Stats:     3 lines in 2 files changed: 1 ins; 2 del; 0 mod

8376287: Crashes when using -XX:ObjArrayMarkingStride=0

Reviewed-by: tschatzl, shade

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PR: https://git.openjdk.org/jdk/pull/29479