IV71078: SEGFAULT IN LIBJ9VM28.SO DURING JVM SHUTDOWN

APAR status

• Closed as program error.

Error description

• Error Message: Unhandled exceptionType=Segmentation error
  vmState=0x00040000J9Generic_Signal_Number=00000004
  Signal_Number=0000000b Error_Value=00000000
  Signal_Code=00000001Handler1=F6B8F814 Handler2=F6AE5DA3
  InaccessibleAddress=00000000EDI=00000000 ESI=D2ED5600
  EAX=0001CA02 EBX=F6BFB954ECX=D32CC000 EDX=F6BF453DEIP=F6B7F803
  ES=002B DS=002B ESP=D30BC920EFlags=00010202 CS=0023 SS=002B
  EBP=D30BC998Module=/bluebird/builds/bld_230065/sdk/xi3280/jre/li
  b/i386/default/libj9vm28.so<OSB>ERR<CSB>
  Module_base_address=F6B20000
  .
  Stack Trace: <signal handler called>internalFindClassUTF8
  ()resolveClassRef ()fixUnsafeMethods
  ()Java_sun_misc_Unsafe_defineClass__Ljava_lang_String_2_3BIILjav
  a_lang_ClassLoader_2Ljava_security_ProtectionDomain_2
  ()VMprJavaSendNative ()??initializeImpl ()classInitStateMachine
  ()resolveStaticMethodRefInto ()resolveStaticMethodRef
  ()bytecodeLoop ()cInterpreter ()?? ()javaProtectedThreadProc
  ()j9sig_protect ()javaThreadProc ()thread_wrapper ()
  .
  

Local fix

Problem summary

• The problem occurs during JVM shutdown and is caused when the
  JVM trace component terminates while a thread is still running
  Java code.
  

Problem conclusion

• The JVM trace component has been updated to prevent the crash
  from occurring.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR1 (8.0.1.0)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the 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

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R270 PSY

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