git: openjdk/jdk21u-dev: master: 8331735: UpcallLinker::on_exit races with GC when copying frame anchor

[Andrew John Hughes]

Changeset: 91457e69
Branch: master
Author:    Andrew John Hughes <andrew at openjdk.org>
Date:      2025-02-28 12:46:41 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/91457e694353386737e325e6fa0253bcefb8d579

8331735: UpcallLinker::on_exit races with GC when copying frame anchor
8343144: UpcallLinker::on_entry racingly clears pending exception with GC safepoints
8286875: ProgrammableUpcallHandler::on_entry/on_exit access thread fields from native

Backport-of: 461ffafeba459c077f1c2d9c5037305b71a8bc2a

! src/hotspot/share/prims/upcallLinker.cpp