jhsdb jmap fails to write binary heap dump of a jshell process

ADDITIONAL SYSTEM INFORMATION :
Linux 5.0.0-16-generic #17-Ubuntu SMP Wed May 15 10:52:21 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

java version "11.0.3" 2019-04-16 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.3+12-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.3+12-LTS, mixed mode)


A DESCRIPTION OF THE PROBLEM :
Trying to dump a binary heap dump from a jshell process fails with NullPointerException

# jhsdb jmap --pid 9515 --binaryheap --dumpfile heap.hprof
Attaching to process ID 9515, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 11.0.3+12-LTS
Exception in thread "main" java.lang.NullPointerException
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeSymbolID(HeapHprofBinWriter.java:1121)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.dumpStackFrame(HeapHprofBinWriter.java:752)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.dumpStackTraces(HeapHprofBinWriter.java:725)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.write(HeapHprofBinWriter.java:434)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.writeHeapHprofBin(JMap.java:182)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.run(JMap.java:97)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.main(JMap.java:176)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runJMAP(SALauncher.java:326)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:455)
#

This looks similar to JDK-8213584

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
I used two terminals, one for jshell and another to run jhsdb jmap

First terminal, start a jshell process:
# jshell
| Welcome to JShell -- Version 11.0.3
| For an introduction type: /help intro

jshell>

Second terminal, check pid of jshell and then run jshdb jmap:

# jcmd
9666 jdk.jcmd/sun.tools.jcmd.JCmd
9515 jdk.jshell/jdk.internal.jshell.tool.JShellToolProvider
9534 jdk.jshell.execution.RemoteExecutionControl 42871

# jhsdb jmap --pid 9515 --binaryheap --dumpfile heap.hprof
Attaching to process ID 9515, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 11.0.3+12-LTS
Exception in thread "main" java.lang.NullPointerException
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeSymbolID(HeapHprofBinWriter.java:1121)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.dumpStackFrame(HeapHprofBinWriter.java:752)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.dumpStackTraces(HeapHprofBinWriter.java:725)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.write(HeapHprofBinWriter.java:434)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.writeHeapHprofBin(JMap.java:182)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.run(JMap.java:97)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.main(JMap.java:176)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runJMAP(SALauncher.java:326)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:455)
#

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expected the execution to finish with the message "heap written to heap.hprof"


ACTUAL -
Attaching to process ID 9515, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 11.0.3+12-LTS
Exception in thread "main" java.lang.NullPointerException
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeSymbolID(HeapHprofBinWriter.java:1121)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.dumpStackFrame(HeapHprofBinWriter.java:752)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.dumpStackTraces(HeapHprofBinWriter.java:725)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.write(HeapHprofBinWriter.java:434)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.writeHeapHprofBin(JMap.java:182)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.run(JMap.java:97)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.main(JMap.java:176)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runJMAP(SALauncher.java:326)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:455)

---------- BEGIN SOURCE ----------
jshell and jshdb are both included in the JDK
---------- END SOURCE ----------

FREQUENCY : always