On Thu, 29 Oct 2026 07:31:38 GMT, Timofei Pushkin <[email protected]> wrote:

>> Fixes leaks I could identify on `Agent_OnAttach` failure paths.
>> 
>> In `libinstrument`:
>> - the changes to `Agent_OnAttach` are the important ones, while 
>> `DEF_Agent_OnLoad` and `loadAgent` are updated for hygiene and uniformity 
>> (when they fail the process gets killed anyway)
>> - besides implementing a proper cleanup (the "Improve failure cleanup in 
>> libinstrument" commit), I also reordered a few agent initialization steps to 
>> not create the JVM TI environment and change the classpath before the 
>> provided JAR is validated (the "Reorder blocks to minimize unrecoverable 
>> changes" commit)
>> 
>> The HotSpot change is adding a destructor to `JvmtiAgent` for the `delete` 
>> in `JvmtiAgentList::load_agent` executed when `Agent_OnAttach` fails.
>> 
>> Tested by running `jdk_instrument`, `svc_tools`, `vmTestbase_nsk_aod`, 
>> `hotspot/vmTestbase/nsk/jvmti/AttachOnDemand`, 
>> `hotspot/serviceability/jvmti/RedefineClasse`.
>> 
>> ---------
>> - [x] I confirm that I make this contribution in accordance with the 
>> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).
>
> Timofei Pushkin has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   Address the review

Thank you for answering my questions. Looks good.

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

Marked as reviewed by sspitsyn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/33608#pullrequestreview-5777690800

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