APAR status
Closed as program error.
Error description
Error Message: An unhandled exception is raised with varying symptoms: Segmentation error during AOT compilation with vmState=0x0005ff05, segmentation error or illegal instruction in an AOT compiled method with vmState=0x00000000. This happens when trying to AOT compile or execute an AOT compiled method that inlines java/util/concurrent/ConcurrentLinkedQueue.poll or java/util/concurrent/ConcurrentLinkedQueue.offer . . Stack Trace: findFieldInTable findField instanceFieldOffset TR_J9SharedCacheVM::getInstanceFieldOffset TR_J9VM::getInstanceFieldOffset inlineConcurrentLinkedQueueTMPoll TR_J9VMBase::inlineDirectCall TR_S390TreeEvaluator::directCallEvaluator TR_CodeGenerator::evaluate TR_S390TreeEvaluator::treetopEvaluator TR_CodeGenerator::evaluate TR_CodeGenerator::doInstructionSelection() Or a failure in a compiled method. . This problem is only triggered on z Systems (both z/OS and Linux) if the shared class cache is enabled and transactional memory is supported by OS and hardware. It is most likely to be seen when using the option -Xtune:virtualized .
Local fix
This problem can be avoided by setting the JVM option -Xaot:dontInline={java/util/concurrent/ConcurrentLinkedQueue.*}. Note that this can impact performance.
Problem summary
The issue was in the crafted fast path instruction sequences that are supposed to optimize java/util/concurrent/ConcurrentLinkedQueue.poll or java/util/concurrent/ConcurrentLinkedQueue.offer; the JIT compiler did not support the possibility that during Ahead-Of-Time (AOT) method compilations, some of the class pointers may not be available.
Problem conclusion
The JIT compiler has been updated to handle this case properly. . This APAR will be fixed in the following Java Releases: 8 SR1 FP10 (8.0.1.10) . 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
IV74444
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-06-22
Closed date
2015-06-22
Last modified date
2015-06-22
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
JIT
Fixed component ID
620700124
Applicable component levels
R130 PSY
UP
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Document Information
Modified date:
22 June 2015