Integrated: 8276801: gc/stress/ fails intermittently with Shenandoah

Zhengyu Gu zgu at
Thu Nov 11 00:18:42 UTC 2021

On Tue, 9 Nov 2021 15:08:32 GMT, Zhengyu Gu <zgu at> wrote:

> JDK-8276205 fixed a bug that prevents concurrent code cache iteration, without holding CodeCache_lock. That causes register_nmethod() calls can go through during concurrent code cache iteration.
> This is no a problem for new nmethod, cause it is *not* in cache cache snapshot for concurrent code cache iteration, but *nmethod patching* is. We can not allow *nmethod patching* during concurrent code cache iteration, should block it until iteration is completed.
> Test:
> - [x] hotspot_gc_shenandoah
> - [x] Stress test on gc/stress/

This pull request has now been integrated.

Changeset: 73e6d7d7
Author:    Zhengyu Gu <zgu at>
Stats:     10 lines in 2 files changed: 7 ins; 1 del; 2 mod

8276801: gc/stress/ fails intermittently with Shenandoah

Reviewed-by: shade



More information about the hotspot-gc-dev mailing list