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List:       openjdk-serviceability-dev
Subject:    [jdk18] Integrated: 8278239: vmTestbase/nsk/jvmti/RedefineClasses/StressRedefine failed with
From:       Coleen Phillimore <coleenp () openjdk ! java ! net>
Date:       2021-12-22 17:22:19
Message-ID: Q08yLFdOtgq9RPEHrOFdMZabPUpbVtO7ShFi0YNkJcw=.d199df2c-256e-4e64-bebb-650933c6422f () github ! com
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On Tue, 21 Dec 2021 20:51:04 GMT, Coleen Phillimore <coleenp@openjdk.org> wrote:

> This is the fix for https://github.com/openjdk/jdk/pull/6900 retargeted to JDK 18.
> 
> Thanks to @stefank and @fisk for the diagnosis. ZGC is looking at metadata in \
> unloaded nmethods, but redefinition doesn't keep this metadata from being \
> deallocated. Change the iterators that mark metadata in use to walk unloaded \
> nmethods as well as other alive nmethods. 
> The test case reproduces the crash on windows if run in an 100 iteration loop. This \
> fix does not crash in the same test. Also ran tier1-6. 
> Above testing in progress.

This pull request has now been integrated.

Changeset: 2be3e7ef
Author:    Coleen Phillimore <coleenp@openjdk.org>
URL:       https://git.openjdk.java.net/jdk18/commit/2be3e7ef1cff1aae6faf1f4f0545d561af48d0ba
                
Stats:     4 lines in 1 file changed: 0 ins; 0 del; 4 mod

8278239: vmTestbase/nsk/jvmti/RedefineClasses/StressRedefine failed with \
EXCEPTION_ACCESS_VIOLATION at 0x000000000000000d

Reviewed-by: kvn, sspitsyn, eosterlund

-------------

PR: https://git.openjdk.java.net/jdk18/pull/63


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