JVM crash in oopDesc::size_given_klass with current thread ConcurrentGCThread

Solution Unverified - Updated 9 Nov 2020

Environment

Oracle JDK8 u201

Issue

The following in the fatal error log:

#  SIGSEGV (0xb) at pc=0x00007f0f1e7fc071, pid=16097, tid=0x00007f0e94fff700
#
# JRE version: Java(TM) SE Runtime Environment (8.0_201-b09) (build 1.8.0_201-b09)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.201-b09 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# V  [libjvm.so+0x648071]  oopDesc::size_given_klass(Klass*)+0x1
...
Current thread (0x00007f0f18074000):  ConcurrentGCThread [stack: 0x00007f0e94f00000,0x00007f0e95000000] [id=16133]
...
Stack: [0x00007f0e94f00000,0x00007f0e95000000],  sp=0x00007f0e94ffed50,  free space=1019k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x648071]  oopDesc::size_given_klass(Klass*)+0x1
V  [libjvm.so+0x4a5ebb]  CMRootRegionScanTask::work(unsigned int)+0x14b
V  [libjvm.so+0xaf3c68]  GangWorker::loop()+0xd8
V  [libjvm.so+0x90d922]  java_start(Thread*)+0x102

SBR

JVM & Diagnostics

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