[jdk15u-dev] RFR: 8260589: Crash in JfrTraceIdLoadBarrier::load(_jclass*)

Mon Nov 1 18:37:37 UTC 2021

I'd like to backport JDK-8260589 to 15u for parity with 11u.
The patch applies almost cleanly except for some context changes in jfrTraceIdLoadBarrier.cpp, jfrTraceId.cpp and jfrTypeSet.cpp (JDK-8252406 and JDK-8257563 are not in 15u), reapplied manually.
Tested with tier1 and jdk/jfr tests, added test fails without the patch, passes with it.

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Commit messages:
 - Backport a9d2267f8d306522522c999ff584ccaa34c46456

Changes: https://git.openjdk.java.net/jdk15u-dev/pull/129/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=129&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8260589
  Stats: 244 lines in 9 files changed: 211 ins; 19 del; 14 mod
  Patch: https://git.openjdk.java.net/jdk15u-dev/pull/129.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk15u-dev pull/129/head:pull/129

PR: https://git.openjdk.java.net/jdk15u-dev/pull/129