FULL PRODUCT VERSION :
1.8.0_40-ea-b12 hotspot 25.40-b16 mixed mode


FULL OS VERSION :
Linux XXX 2.6.32-220.el6.i686 #1 SMP Wed Nov 9 08:02:18 EST 2011 i686 i686 i386 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
jmap with -F flags results in a crash and dump file broken:

Debugger attached successfully.
Server compiler detected.
JVM version is 25.40-b16
Dumping heap to /users/mem.hprof ...
Exception in thread "main" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at sun.tools.jmap.JMap.runTool(JMap.java:201)
        at sun.tools.jmap.JMap.main(JMap.java:130)
Caused by: sun.jvm.hotspot.utilities.AssertionFailure: can not get class data for java/lang/UNIXProcess$Platform$$Lambda$10x837b3218
        at sun.jvm.hotspot.utilities.Assert.that(Assert.java:32)
        at sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeInstance(HeapHprofBinWriter.java:803)
        at sun.jvm.hotspot.utilities.AbstractHeapGraphWriter$1.doObj(AbstractHeapGraphWriter.java:95)
        at sun.jvm.hotspot.oops.ObjectHeap.iterateLiveRegions(ObjectHeap.java:353)
        at sun.jvm.hotspot.oops.ObjectHeap.iterate(ObjectHeap.java:171)
        at sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.write(AbstractHeapGraphWriter.java:51)
        at sun.jvm.hotspot.utilities.HeapHprofBinWriter.write(HeapHprofBinWriter.java:433)
        at sun.jvm.hotspot.tools.HeapDumper.run(HeapDumper.java:62)
        at sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
        at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
        at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
        at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:83)
        ... 6 more



THE PROBLEM WAS REPRODUCIBLE WITH -Xint FLAG: Did not try

THE PROBLEM WAS REPRODUCIBLE WITH -server FLAG: Did not try

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
jmap on a process as long with -F flag

EXPECTED VERSUS ACTUAL BEHAVIOR :
no exception :)
ERROR MESSAGES/STACK TRACES THAT OCCUR :
Debugger attached successfully.
Server compiler detected.
JVM version is 25.40-b16
Dumping heap to /users/mem.hprof ...
Exception in thread "main" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at sun.tools.jmap.JMap.runTool(JMap.java:201)
        at sun.tools.jmap.JMap.main(JMap.java:130)
Caused by: sun.jvm.hotspot.utilities.AssertionFailure: can not get class data for java/lang/UNIXProcess$Platform$$Lambda$10x837b3218
        at sun.jvm.hotspot.utilities.Assert.that(Assert.java:32)
        at sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeInstance(HeapHprofBinWriter.java:803)
        at sun.jvm.hotspot.utilities.AbstractHeapGraphWriter$1.doObj(AbstractHeapGraphWriter.java:95)
        at sun.jvm.hotspot.oops.ObjectHeap.iterateLiveRegions(ObjectHeap.java:353)
        at sun.jvm.hotspot.oops.ObjectHeap.iterate(ObjectHeap.java:171)
        at sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.write(AbstractHeapGraphWriter.java:51)
        at sun.jvm.hotspot.utilities.HeapHprofBinWriter.write(HeapHprofBinWriter.java:433)
        at sun.jvm.hotspot.tools.HeapDumper.run(HeapDumper.java:62)
        at sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
        at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
        at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
        at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:83)
        ... 6 more


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
do not use -F flag