RFR: 8307977: jcmd and jstack broken for target processes running with elevated capabilities

[Severin Gehwolf]

On Tue, 30 Jan 2024 13:57:43 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

>> 8307977: jcmd and jstack broken for target processes running with elevated capabilities
>
> `test/hotspot/jtreg/serviceability` tests would also be worth running.

> Hi @jerboaa, thanks a lot for the hints! The container tests were new to me at least.
> 
> Just out of curiosity, are the container tests run as part of the tier1 tests (`make test-tier1`)? I'm not sure if I'm looking at the right place, but I get the feeling this is defined in `test/hotspot/jtreg/TEST.groups`, and the answer is maybe "no" in that case.
> 
> > Please run container tests, which do some jcmd testing across containers (host system runs jcmd and containers have the JVMs): `test/hotspot/jtreg/containers` See [testing.md](https://github.com/openjdk/jdk/blob/master/doc/testing.md#docker-tests) as to how to run them. I'll give this PR a spin as well.
> 
> If I understand it correctly, this is the way to run them. Please correct me if I'm wrong.
> 
> ```
> $ make test TEST="jtreg:test/hotspot/jtreg/containers"
> 
> ...
> 
> ==============================
> Test summary
> ==============================
>    TEST                                              TOTAL  PASS  FAIL ERROR   
>    jtreg:test/hotspot/jtreg/containers                  14    14     0     0   
> ==============================
> TEST SUCCESS
> ```

Thanks! Please make sure that the tests actually ran. If, for example, `docker` is not installed, they get skipped.

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PR Comment: https://git.openjdk.org/jdk/pull/17628#issuecomment-1918774353