RFR: 8359472: JVM crashes when attaching a dynamic agent before JVMTI_PHASE_LIVE

[Kerem Kat]

On Mon, 13 Oct 2025 11:26:36 GMT, Francesco Andreuzzi <fandreuzzi at openjdk.org> wrote:

> In this PR I add a check to prevent debug builds to crash when an agent tries to attach while the JVM is not in live phase.
> 
> Passes tier1 and tier2 (fastdebug).

src/hotspot/share/prims/jvmtiAgentList.cpp line 201:

> 199:   if (JvmtiEnvBase::get_phase() != JVMTI_PHASE_LIVE) {
> 200:     st->print_cr("Not in live phase");
> 201:     return;

Will the agent be loaded later?

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PR Review Comment: https://git.openjdk.org/jdk/pull/27766#discussion_r2426112848