Integrated: 8314679: SA fails to properly attach to JVM after having just detached from a different JVM

Chris Plummer cjplummer at openjdk.org
Wed Aug 23 20:13:33 UTC 2023


On Tue, 22 Aug 2023 23:22:37 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

> The CDS archive can change memory locations on different runs of the same JVM binary. This exposed a long standing bug in FileMapInfo.java. It was caching addresses that could be different for different JVM processes. As a result, doing an attach, detach, and then another attach to a different JVM process was resulting in various exceptions because the contents of CDS memory was not as expected.
> 
> Tested by running all serviceability/sa tests. Also tested with ZGC and generational ZGC.

This pull request has now been integrated.

Changeset: 38a9edfb
Author:    Chris Plummer <cjplummer at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/38a9edfb7ee2d91ff52074137c5b69e27bcdbdc3
Stats:     95 lines in 3 files changed: 94 ins; 0 del; 1 mod

8314679: SA fails to properly attach to JVM after having just detached from a different JVM

Reviewed-by: dholmes, kevinw

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PR: https://git.openjdk.org/jdk/pull/15395


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