APAR status
Closed as program error.
Error description
Error Message: The failure mode will be a crash, usually in the libj9jit29.so with a JIT compiled method immediately above on the backtrace where the compiled method is the result of a profiling compilation. This problem only affects the x86 platform and will likely be intermittent. . Stack Trace: N/A .
Local fix
It may be possible to workaround this issue using -Xjit:exclude and -Xjit:dontInline to prevent the problem method from being compiled - this will negatively affect performance.
Problem summary
Under very rare circumstances the JIT may attempt to profile a value which is unresolved. This can result in two stack swaps and a corrupted register state when running a JIT compiled method which resulted from a profiling compilation on an x86 hardware.
Problem conclusion
The internal control flow sequence generated by the compiler has been modified to prevent corrupting the register and stack state if an unresolved value is profiled. . This APAR will be fixed in the following Java Releases: 8 SR5 FP5 (8.0.5.5) . 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
IJ01975
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-11-16
Closed date
2017-11-16
Last modified date
2017-11-16
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:
16 November 2017