IJ25377: IBM JAVA REGISTERS A HANDLER BY DEFAULT FOR SIGABRT

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• When a native application creates a Java Virtual Machine (JVM)
  instance through JNI, the JVM's SIGABRT handler overrides the
  native application's SIGABRT handler, which is installed prior
  to creating the JVM instance. If a SIGABRT is received by the
  native application, only the JVM's SIGABRT handler will be
  invoked and the native application's SIGABRT handler will not be
  invoked.
  

Problem conclusion

• A new JVM option -XX:<OSB>+<PIPE>-<CSB>HandleSIGABRT is
  introduced. When the option is enabled (default behavior), the
  JVM handles the signal SIGABRT and generates the various dump
  files. When the option is disabled (-XX:-HandleSIGABRT), the JVM
  does not handle the signal SIGABRT.
  Explicitly enabling -XX:+HandleSIGABRT with -Xrs is not
  supported. An error is thrown if both options are enabled
  together.
  .
  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

• Enable the JVM option -Xrs:sync. The JVM will not register a
  signal handler for SIGABRT, and the application signal handler
  will be invoked if installed. If not installed, the operating
  system will handle the signal.
  It should also be noted that IBM J9 won't register a signal
  handler for other signals such as SIGBUS, SIGILL, SIGFPE,
  SIGTRAP and SIGABEND when -Xrs:sync is specified. -Xrs should be
  used if the native application wants to completely disable JVM
  signal handling.
  

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

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R270 PSY

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