RFR: 8344935: [ubsan]: javaThread.hpp:1241:52: runtime error: load of value 9831830, which is not a valid value for type 'freeze_result' [v3]

[Matthias Baesken]

> Seems we miss initialization of  _last_freeze_fail_result in the  JavaThread constructor, this should be added.
> Causes otherwise ubsan issues in the test  java/lang/Thread/virtual/MonitorEnterExit.java#Xcomp-TieredStopAtLevel1-LM_LEGACY 
> 
> /priv/jenkins/client-home/workspace/openjdk-jdk-weekly-linux_x86_64-opt/jdk/src/hotspot/share/runtime/javaThread.hpp:1241:52: runtime error: load of value 9831830, which is not a valid value for type 'freeze_result'
>     #0 0x7f5edef378eb in JavaThread::last_freeze_fail_result() src/hotspot/share/runtime/javaThread.hpp:1241
>     #1 0x7f5edef378eb in JVM_VirtualThreadPinnedEvent src/hotspot/share/prims/jvm.cpp:3805

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  remove added state, add assert

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/22361/files
  - new: https://git.openjdk.org/jdk/pull/22361/files/f8044bcf..a64088d2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22361&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22361&range=01-02

  Stats: 9 lines in 3 files changed: 4 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/22361.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22361/head:pull/22361

PR: https://git.openjdk.org/jdk/pull/22361