IZ70316: *ORB* DEADLOCK IN COM.IBM.RMI.IO.VALUEUITLITY

APAR status

• Closed as program error.

Error description

• Error Message: Post migration to 142_SR13,the following deadlock
  may be seen at startup.
  1LKDEADLOCK    Deadlock detected !!!
  NULL           ---------------------
  NULL
  2LKDEADLOCKTHR  Thread "WebContainer : 39" (0x3DA8E5A8)
  3LKDEADLOCKWTR    is waiting for:
  4LKDEADLOCKMON      sys_mon_t:0x461EDEB8 infl_mon_t: 0x00000000:
  4LKDEADLOCKOBJ
  com.ibm.rmi.io.ValueUtility$ValueUtilityLock@88D73C50/88D73C58:
  3LKDEADLOCKOWN    which is owned by:
  2LKDEADLOCKTHR  Thread "WebContainer : 6" (0x458CBF28)
  3LKDEADLOCKWTR    which is waiting for:
  4LKDEADLOCKMON      sys_mon_t:0x461E25C8 infl_mon_t: 0x00000000:
  4LKDEADLOCKOBJ
  com.ibm.rmi.io.ValueUtility$ValueUtilityLock@88EC3A68/88EC3A70:
  3LKDEADLOCKOWN    which is owned by:
  2LKDEADLOCKTHR  Thread "WebContainer : 39" (0x3DA8E5A8)
  .
  Stack Trace: "WebContainer : 39" (TID:0x70C95E20,
  sys_thread_t:0x3DA8E5A8, state:CW, native ID:0xCE14) prio=5
  
  
      at
  com.ibm.rmi.io.ValueUtility$ValueUtilityLock.createTC(ValueUtili
  ty.java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility$ValueUtilityLock.createValueTC(Value
  Utility.java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.createTypeCodeForClass(ValueUtility.
  java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getTypeCode(ValueUtility.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getTypeCode(ValueUtility.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.io.ValueUtility.createTypeCodeForClass(ValueUtility.
  java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getTypeCode(ValueUtility.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getMembers(ValueUtility.java(Compile
  d Code))
  
      at
  com.ibm.rmi.io.ValueUtility.access$100(ValueUtility.java(Compile
  d Code))
  
      at
  com.ibm.rmi.io.ValueUtility$ValueUtilityLock.createTC(ValueUtili
  ty.java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility$ValueUtilityLock.createValueTC(Value
  Utility.java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.createTypeCodeForClass(ValueUtility.
  java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getTypeCode(ValueUtility.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getMembers(ValueUtility.java(Compile
  d Code))
  
      at
  com.ibm.rmi.io.ValueUtility.translate(ValueUtility.java(Compiled
  Code))
  
      at
  com.ibm.rmi.util.RepositoryId.getFVDesc(RepositoryId.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.util.RepositoryId.createForJavaType(RepositoryId.jav
  a(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.createTypeCodeForClass(ValueUtility.
  java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getTypeCode(ValueUtility.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getTypeCode(ValueUtility.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.io.ValueUtility.createTypeCodeForClass(ValueUtility.
  java(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getTypeCode(ValueUtility.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.io.ValueUtility.translate(ValueUtility.java(Compiled
  Code))
  
      at
  com.ibm.rmi.util.RepositoryId.getFVDesc(RepositoryId.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.util.RepositoryId.createForJavaType(RepositoryId.jav
  a(Compiled Code))
  
      at
  com.ibm.rmi.io.ValueUtility.getMembers(ValueUtility.java(Compile
  d Code))
  
      at
  com.ibm.rmi.io.ValueUtility.translate(ValueUtility.java(Compiled
  Code))
  
      at
  com.ibm.rmi.util.RepositoryId.getFVDesc(RepositoryId.java(Compil
  ed Code))
  
      at
  com.ibm.rmi.util.RepositoryId.createForJavaType(RepositoryId.jav
  a(Compiled Code))
  
      at
  com.ibm.rmi.util.RepositoryId.createForAnyType(RepositoryId.java
  (Compiled Code))
      at
  com.ibm.rmi.iiop.CDRInputStream.fast_read_value(CDRInputStream.j
  ava(Compiled Code))
      at
  com.ibm.rmi.iiop.CDRInputStream.read_value(CDRInputStream.java:2
  017)
  
      at
  com.a.b._RemoteService_Stub.remoteMethod(_RemoteService_Stub.jav
  a:249)
  .
  

Local fix

Problem summary

• The problem was caused due to a synchronization issue in the
  ValueUtilityLock class when multiple threads try to initialize
  classes holding references to each other
  

Problem conclusion

• This defect will be fixed in:
  5.0.0 SR12
  .
  The deadlock was resolved by using thread safe structures
  .
  To obtain the fix:
  Install build 20091223 or later
  

Temporary fix

Comments

APAR Information

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

  PM03106

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

  PM28672

Fix information

• Fixed component name

  JAVA 5 ORB

• Fixed component ID

  620500123

Applicable component levels

• R500 PSN

     UP