APAR status
Closed as program error.
Error description
Error Message: The JVM stops unexpectedly. The javacore will indicate Dump Event "abort" (00020000) received . Stack Trace: Use of a native debugger will show that the crash occurred in a JIT compilation thread and the stack will include the following key entries: #37 0x00007f9dbfd3b727 in generateLabelInstruction(TR_X86OpCodes, TR::Node*, TR::LabelSymbol*, TR::CodeGenerator*) () from ./<installdir>/java/jre/lib/amd64/compressedrefs/libj9jit29.so #38 0x00007f9dbfd42a46 in TR_OutlinedInstructionsGenerator::<TLD>TR_OutlinedInstructionsGe nerator() () from ./<installdir>/java/jre/lib/amd64/compressedrefs/libj9jit29.so .
Local fix
The problem can usually be avoided by adjusting the memory allocated to the JIT for temporary use during compilation. The default value is 256MB, a value of 384MB would be a reasonable starting point that should make the problem much less likely to occur without increasing the JVM memory usage too much. This can be done with the following option (units in kilobytes): -Xjit:scratchSpaceLimit=393216
Problem summary
If the memory available for the JIT compiler is exhausted at a very specific point in the compilation it causes an exception to be thrown from a C++ destructor, resulting in the JVM abruptly terminating. This problem is specific to the X86 platform.
Problem conclusion
The mechanism for generating out of line instruction sequences was changed to avoid the need to allocate memory in a destructor. See OMR issue 4846 for an in-depth technical discussion (https://github.com/eclipse/omr/issues/4846) . This APAR will be fixed in the following Java Releases: 8 SR6 FP11 (8.0.6.11) . 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
IJ24946
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-05-14
Closed date
2020-05-26
Last modified date
2020-05-26
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
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSNVBF","label":"Runtimes for Java Technology"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Line of Business":{"code":"LOB36","label":"IBM Automation"}}]
Document Information
Modified date:
27 May 2020