On Sat, 10 Sep 2022 00:05:22 GMT, Serguei Spitsyn <sspit...@openjdk.org> wrote:
> I was not able to reproduce this issue in thousands of mach5 runs on multiple
> platforms. However, the root cause seems to be pretty simple. A
> JvmtiVTMSTransitionDisabler needs to be added to make the JVM TI StopThread
> function to be VTMS (Virtual Thread Mount state) transition safe.
>
> So the fix is a one-liner:
>
> diff --git a/src/hotspot/share/prims/jvmtiEnv.cpp
> b/src/hotspot/share/prims/jvmtiEnv.cpp
> index a9efe01c92e..f5e9176230a 100644
> --- a/src/hotspot/share/prims/jvmtiEnv.cpp
> +++ b/src/hotspot/share/prims/jvmtiEnv.cpp
> @@ -1182,6 +1182,8 @@ JvmtiEnv::ResumeAllVirtualThreads(jint except_count,
> const jthread* except_list)
> jvmtiError
> JvmtiEnv::StopThread(jthread thread, jobject exception) {
> JavaThread* current_thread = JavaThread::current();
> +
> + JvmtiVTMSTransitionDisabler disabler;
> ThreadsListHandle tlh(current_thread);
> JavaThread* java_thread = NULL;
> oop thread_oop = NULL;
Marked as reviewed by cjplummer (Reviewer).
-------------
PR: https://git.openjdk.org/jdk/pull/10235
