Integrated: 8373485: JFR Crash during sampling: assert(jt->has_last_Java_frame()) failed: invariant

[Markus Grönlund]

On Sun, 11 Jan 2026 12:39:06 GMT, Markus Grönlund <mgronlun at openjdk.org> wrote:

> Greetings,
> 
> When sampling threads in state _thread_in_native, there is a missing memory barrier when UseSystemMemoryBarrier is used, because it must be emitted manually.
> 
> Testing: jdk_jfr
> 
> Thanks
> Markus
> 
> PS "threads_lock" local variable was renamed to "lock" not to confuse with the global Threads_lock.

This pull request has now been integrated.

Changeset: 543a9722
Author:    Markus Grönlund <mgronlun at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/543a972222118155e4c72c6f2d32d154c5dfd442
Stats:     11 lines in 1 file changed: 7 ins; 0 del; 4 mod

8373485: JFR Crash during sampling:  assert(jt->has_last_Java_frame()) failed: invariant

Reviewed-by: shade, egahlin

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PR: https://git.openjdk.org/jdk/pull/29155