dd-trace-java: JVM Crash while starting

So we’ve been using the Datadog Agent for more than 12 months and everything seemed ok. We’ve recently added a wrapper around our cron jobs and we’re able to pick ocasional JVM crashes when starting these jobs.

We used to have dd-trace-java 0.8 but we tried upgrading to the latest 0.18 and the crashes still occurred. We disabled the agent for a few days, to test if this could be the issue and the crashes disappeared. There seems to be a connection. The other variables where not changed (no new deploy, same machine, etc).

Attached is a simple log of the JVM starting. Do you have any similar cases? We found the crash might be related to bytebuddy which is used in this agent.

java -Djava.awt.headless=true -Xms128m -Xmx1024m -XX:+UseConcMarkSweepGC -Dlog4j.configuration=file:/folder/utils.properties -javaagent:/folder/shared/dd-java-agent.jar -jar /folder/current --config /folder/server.properties job-name --threads=1 

[main] INFO datadog.trace.agent.ot.DDTraceOTInfo - dd-trace - version: 0.18.0~d1e8ed12
[main] INFO datadog.trace.agent.ot.DDTracer - New instance: DDTracer-4416d64f{ serviceName=utils, writer=DDAgentWriter { api=DDApi { tracesEndpoint=http://localhost:8126/v0.4/traces } }, sampler=AllSampler { sample=true }, runtimeId=98ce9072, defaultSpanTags={}}
[main] INFO datadog.trace.agent.tooling.VersionLogger - dd-trace-ot - version: 0.18.0~d1e8ed12
[main] INFO datadog.trace.agent.tooling.VersionLogger - dd-trace-api - version: 0.18.0~d1e8ed12
[main] INFO datadog.trace.agent.tooling.VersionLogger - dd-java-agent - version: 0.18.0~d1e8ed12
[main] INFO datadog.trace.agent.jmxfetch.JMXFetch - JMXFetch is disabled

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007fdc3f3ab9f2, pid=20229, tid=0x00007fdbdbbfb700
#
# JRE version: OpenJDK Runtime Environment (8.0_181-b13) (build 1.8.0_181-8u181-b13-2~deb9u1-b13)
# Java VM: OpenJDK 64-Bit Server VM (25.181-b13 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# V  [libjvm.so+0x7b89f2]
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/user/hs_err_pid20229.log
#
# Compiler replay data is saved as:
# /home/user/replay_pid20229.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#
/folder/job.sh: line 47: 20216 Aborted               

Bytebuddy class:

C2: 5798 1763 4 net.bytebuddy.description.type.TypeDescription$Generic$OfTypeVariable::accept (8 bytes)