hg: jdk8u/jdk8u-dev/hotspot: 8258669: fastdebug jvm crashes when do event based tracing for monitor inflation

[felix.yang at huawei.com]

Changeset: 3b1ad311bf91
Author:    fyang
Date:      2020-12-18 15:41 +0800
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/3b1ad311bf91

8258669: fastdebug jvm crashes when do event based tracing for monitor inflation
Reviewed-by: phh

! src/share/vm/jfr/recorder/checkpoint/types/jfrType.cpp
! src/share/vm/runtime/synchronizer.cpp
! src/share/vm/runtime/synchronizer.hpp