IV62714: JAVA VM CRASHES ON CLASS FILES WITH MALFORMED ANNOTATION ATTRIBU TES

APAR status

• Closed as program error.

Error description

• Error Message: Unhandled exception.
  .
  Stack Trace: Unhandled exceptionType=Segmentation error
  vmState=0x00000000J9Generic_Signal_Number=00000004
  Signal_Number=0000000b Error_Value=00000000
  Signal_Code=00000002Handler1=00002AAAAAF62210
  Handler2=00002AAAAB61C0B0
  InaccessibleAddress=00002AAAC30A449DRDI=000000004180A650
  RSI=000000000000003D RAX=000000000013FFEC
  RBX=000000004180A650...Module=.../libj9dyn28.so----------- Stack
  Backtrace -----------(0x00002AAAB1711E50
  <OSB>libj9dyn28.so+0xce50<CSB>)(0x00002AAAB1711F91
  <OSB>libj9dyn28.so+0xcf91<CSB>)(0x00002AAAB17169BE
  <OSB>libj9dyn28.so+0x119be<CSB>)(0x00002AAAB1717790
  <OSB>libj9dyn28.so+0x12790<CSB>)(0x00002AAAB17226EB
  <OSB>libj9dyn28.so+0x1d6eb<CSB>)(0x00002AAAB1723C34
  <OSB>libj9dyn28.so+0x1ec34<CSB>)(0x00002AAAB1724426
  <OSB>libj9dyn28.so+0x1f426<CSB>)(0x00002AAAB1736B83
  <OSB>libj9dyn28.so+0x31b83<CSB>)(0x00002AAAB1737DA5
  <OSB>libj9dyn28.so+0x32da5<CSB>)(0x00002AAAB20C3CBE
  <OSB>libjclse7b_28.so+0x2bcbe<CSB>)Java_java_lang_ClassLoader_de
  fineClassImpl+0x9b (0x00002AAAB20AB58B
  <OSB>libjclse7b_28.so+0x1358b<CSB>)
  .
  

Local fix

• Ensure all class files are well-formed. The javap command can be
  used to check the format.
  

Problem summary

• The JVM did not check for certain error conditions.
  

Problem conclusion

• Additional error checking has been added.
  .
  This APAR will be fixed in the following Java Releases:
     7 R1 SR2       (7.1.2.0)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, Java maintenance is available
  from:
             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

     UP