APAR status
Closed as program error.
Error description
Error Message: the JVM crashes with segmentation error vmState=0x0005ff05 . Stack Trace: TR_IPBCDataCallGraph::createPersistentCopy TR_IProfiler::createBalancedBST TR_IProfiler::createBalancedBST TR_IProfiler::persistIprofileInfo TR_ByteCodeIlGenerator::genIL TR_ResolvedMethodSymbol::genIL TR_Compilation::compile TR_CompilationInfoPerThreadBase::compile TR_CompilationInfoPerThreadBase::wrappedCompile . This is a very rare failure that can only happen in a very small time window.
Local fix
Problem summary
The problem is caused by a race condition between compilation threads of the JIT compiler in the following scenario: One JIT compilation thread enters into a code path assuming a method is NOT unloaded based on its previous read from a data structure describing if the method is unloaded or not. However, another JIT compilation thread changes the method status to be unloaded and causes the first compilation thread to crash.
Problem conclusion
The JIT compiler has been updated to keep the data structure describing if the method is unloaded or not consistent after the first compilation thread reads from the data structure. . This APAR will be fixed in the following Java Releases: 7 SR10 (7.0.10.0) 6 R1 SR9 (6.1.9.0) 7 R1 SR4 (7.1.4.0) 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
IV78174
Reported component name
JIT
Reported component ID
620700124
Reported release
260
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-10-19
Closed date
2015-10-19
Last modified date
2015-10-19
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
R260 PSY
UP
R130 PSY
UP
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"260","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
19 October 2015