IJ26311: SEGMENTATION FAULT WHILE COMPILING A METHOD

APAR status

• Closed as program error.

Error description

• Error Message: Segmentation fault(coredump)
  .
  Stack Trace: Large number of calls to findCycle in libj9jit29.so
  at the top of the stack
  .
  

Local fix

• An Xjit option can be used to prevent compiling the problematic
  method:
  -Xjit:exclude={*methodName*}
  

Problem summary

• When very large methods get compiled it can cause the recursive
  function findCycle to recurse too many times and trigger a stack
  overflow. The failure will look like a segmentation fault inside
  findCycle.
  

Problem conclusion

• findCycle was changed from an recursive implementation to an
  iterative one that will not trigger a stack overflow.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR6 FP15  (8.0.6.15)
  .
  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