APAR status
Closed as program error.
Error description
Error Message: A SIGSEGV/GPF occurs while class unloading a sun.misc.Unsafe.defineAnonymousClass class. . Stack Trace: TR_LowPriorityCompilationScheduler::purgeEntriesOnClassLoaderUnl oading jitHookAnonClassesUnload J9HookDispatch MM_ClassLoaderManager::cleanUpClassLoadersStart MM_CollectorLanguageInterfaceJava::private_parallelGlobalGC_unlo adDeadClassLoaders MM_CollectorLanguageInterfaceJava::parallelGlobalGC_postMarkProc essin MM_ParallelGlobalGC::masterThreadGarbageCollect MM_ParallelGlobalGC::internalGarbageCollect MM_Collector::garbageCollect .
Local fix
NA
Problem summary
The problem occurs when a sun.misc.Unsafe.defineAnonymousClass class is unloaded and related metadata is not removed at the same time.
Problem conclusion
The JVM has been updated to correctly remove metadata related to sun.misc.Unsafe.defineAnonymousClass classes when they are unloaded by the GC. . This APAR will be fixed in the following Java Releases: 8 SR2 (8.0.2.0) . Contact your IBM Product's Service Team for these Service Refreshes and Fix Packs. For those running stand-alone, information about the available Service Refreshes and Fix Packs can be found at: https://www.ibm.com/developerworks/java/jdk/
Temporary fix
Comments
APAR Information
APAR number
IV77804
Reported component name
J9 COMMON CODE
Reported component ID
620700127
Reported release
270
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-10-06
Closed date
2015-10-06
Last modified date
2015-10-06
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
J9 COMMON CODE
Fixed component ID
620700127
Applicable component levels
R270 PSY
UP
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Document Information
Modified date:
21 February 2022