IV78107: JAVA SEGMENTATION ERROR IN JIT COMPILED CODE ON X86 PLATFORMS

APAR status

• Closed as program error.

Error description

• Error Message: JVM crashes with segmentation error
  vmState=0x00000000 on x86 platforms
  .
  Stack Trace:
  .
  This problem only occurs on systems using the x86 architecture.
  The instruction causing the crash is a JMP to an inaccessible
  address.
  

Local fix

• The problem can be avoided by setting the environment variable
  TR_DisableInlineRecursiveMonitor=1
  

Problem summary

• A race condition causes the JIT compiler to generate incorrect
  assembly code for monitor enter and exit.
  

Problem conclusion

• The JIT compiler has been fixed to prevent the race condition
  and generate correct assembly code for monitor enter and exit.
  .
  This APAR will be fixed in the following Java Releases:
   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 is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

• Fixed component name

  JIT

• Fixed component ID

  620700124

Applicable component levels

• R130 PSY

     UP