RFR: 8377142: Jtreg test gc/shenandoah/oom/TestThreadFailure.java triggers assert(young_reserve + reserve_for_mixed + reserve_for_promo <= old_available + young_available) failed

Wed Feb 11 17:53:58 UTC 2026

On Sat, 7 Feb 2026 00:50:59 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

> In ShenandoahGenerationalHeap::compute_old_generation_balance(), adjust old_available and young_available when regions are transferred between young and old generations.

This is marked as draft because the fix is not yet implemented.  I am publishing the code in draft form in hopes of reproducing the original error with debug instrumentation in place.

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PR Comment: https://git.openjdk.org/jdk/pull/29621#issuecomment-3863207195