Jmap -heap on all OpenJDK 1.7.79+ on Linux x86_64 crash

[Andrew Haley]

I'll take a look at this one.  Andrew, do you know if there is any
Red Hat bug report?

On 18/04/17 06:31, Andrew Hughes wrote:
> 
> 
> ----- Original Message -----
>>> I ran across this bug report
>>> (https://bugs.launchpad.net/ubuntu/+source/openjdk-7/+bug/1548434) and it
>>> seems in Wheezy/Jessie it's likewise. The last functional version I just
>>> so happened to hold onto is 7u79-2.5.5-1~deb7u1.
>>>
>>>  The following are confirmed to throw an Exception
>>>   * 7u111-2.6.7-2~deb8
>>>   * 7u121-2.6.8-1~deb7u1
>>>   * 7u95-2.6.4-1~deb7u1
>>>
>>> Here is an example run with 7u121 -  http://pastebin.com/tzRk7xTH
>>
>> I can confirm that on RHEL family distributions it occurs as well even with
>> 131 which came out a couple weeks ago. Additionally it would be tremendously
>> helpful if 'jmap' were moved back into the main package and not relegated to
>> -devel. It is a tremendously useful program for day to day operations.
>>
>> Linux ip-172-17-0-41 4.4.44-39.55.amzn1.x86_64 #1 SMP Mon Jan 30 18:15:53 UTC
>> 2017 x86_64 x86_64 x86_64 GNU/Linux
>> java-1.7.0-openjdk-1.7.0.131-2.6.9.0.71.amzn1.x86_64
>> java-1.7.0-openjdk-devel-1.7.0.131-2.6.9.0.71.amzn1.x86_64
>>
>>
>> # jmap -heap 2436
>> Attaching to process ID 2436, please wait...
>> Debugger attached successfully.
>> Server compiler detected.
>> JVM version is 24.131-b00
>>
>> using thread-local object allocation.
>> Garbage-First (G1) GC with 2 thread(s)
>>
>> Heap Configuration:
>>    MinHeapFreeRatio = 25
>>    MaxHeapFreeRatio = 70
>>    MaxHeapSize      = 2684354560 (2560.0MB)
>>    NewSize          = 1363144 (1.2999954223632812MB)
>>    MaxNewSize       = 17592186044415 MB
>>    OldSize          = 5452592 (5.1999969482421875MB)
>>    NewRatio         = 2
>>    SurvivorRatio    = 5
>>    PermSize         = 402653184 (384.0MB)
>>    MaxPermSize      = 536870912 (512.0MB)
>>    G1HeapRegionSize = 1048576 (1.0MB)
>>
>> Heap Usage:
>> Exception in thread "main" java.lang.reflect.InvocationTargetException
>>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>         at
>>         sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>         at
>>         sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>         at java.lang.reflect.Method.invoke(Method.java:606)
>>         at sun.tools.jmap.JMap.runTool(JMap.java:197)
>>         at sun.tools.jmap.JMap.main(JMap.java:128)
>> Caused by: java.lang.RuntimeException: unknown CollectedHeap type : class
>> sun.jvm.hotspot.gc_interface.CollectedHeap
>>         at sun.jvm.hotspot.tools.HeapSummary.run(HeapSummary.java:146)
>>         at sun.jvm.hotspot.tools.Tool.start(Tool.java:221)
>>         at sun.jvm.hotspot.tools.HeapSummary.main(HeapSummary.java:40)
>>         ... 6 more
>>
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>>
> 
> Try installing java-1.7.0-openjdk-debuginfo.
>