IJ02758: CRASH IN JIT MODULE DURING METHOD COMPILATION

APAR status

• Closed as program error.

Error description

• Error Message: Segmentation error caused by read/write to
  inaccessible addresses during JIT compilation.
  .
  Stack Trace:
  .
  The problem was introduced in java 8 sr5. In theory, it can
  occur on any machine that is low on memory but most likely will
  only be seen on a 32bit JVM.
  

Local fix

• N/A
  

Problem summary

• A segment of memory that is larger than a threshold is
  considered as a large segment in the JIT. A large segment will
  be released to the OS once its occupying object/struct goes out
  of scope. The problem happens when the JIT attempts to allocate
  from a large segment that has been released. When a machine is
  low on memory, the JIT reduces the threshold until it can
  allocate a segment of size equal to the threshold, which
  increases the chance of requesting large segments, thus the
  chance of allocating memory from released segment.
  

Problem conclusion

• The JIT has been updated to prevent allocating from memory that
  has been released.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR5 FP7   (8.0.5.7)
  .
  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 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

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