PK51827: DEADLOCK WHILE CLASS LOADING SECURITY CLASSES

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: Thread 1:
  at java.security.Security.getProvider(Security.java(Compiled
  at java.security.Security.getAlgClassName(Security.java(Compiled
  at java.security.Security.getImpl(Security.java(Compiled
  at
  java.security.MessageDigest.getInstance(MessageDigest.java:185)
  at com.ibm.crypto.provider.SHA1withDSA.<init>(Unknown
  at java.lang.Class.newInstance2(Native
  at java.lang.Class.newInstance1(Class.java(Compiled
  at
  java.security.Security.createAlgInstance(Security.java(Compiled
  at
  java.security.Security.createAlgInstance(Security.java(Compiled
  at java.security.Security.getImpl(Security.java(Compiled
  at java.security.Signature.getInstance(Signature.java(Compiled
  at sun.security.pkcs.SignerInfo.verify(SignerInfo.java(Compiled
  at sun.security.pkcs.PKCS7.verify(PKCS7.java(Compiled
  at sun.security.pkcs.PKCS7.verify(PKCS7.java(Compiled
  at
  sun.security.util.SignatureFileVerifier.process(SignatureFileVer
  ifier.java(Compiled
  at
  java.util.jar.JarVerifier.processEntry(JarVerifier.java(Compiled
  at java.util.jar.JarVerifier.update(JarVerifier.java(Compiled
  at
  java.util.jar.JarFile.initializeVerifier(JarFile.java(Compiled
  at java.util.jar.JarFile.getInputStream(JarFile.java(Compiled
  at
  sun.misc.URLClassPath$5.getInputStream(URLClassPath.java(Compile
  d
  at sun.misc.Resource.getBytes(Resource.java(Compiled
  at
  java.net.URLClassLoader.defineClass(URLClassLoader.java(Compiled
  at
  java.net.URLClassLoader.access$500(URLClassLoader.java(Compiled
  at
  java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java(Comp
  iled
  at java.security.AccessController.doPrivileged1(Native
  at
  java.security.AccessController.doPrivileged(AccessController.jav
  a(Compiled
  at
  java.net.URLClassLoader.findClass(URLClassLoader.java(Compiled
  at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled
  at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled
  at com.ibm.jsse2.y.getCipher(Unknown
  
  Thread 2:
  at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled
  at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled
  at
  sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java(Compile
  d
  at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled
  at java.security.Provider.loadProvider(Provider.java:241)
  at java.security.Security$2.run(Security.java:399)
  at java.security.AccessController.doPrivileged1(Native
  at
  java.security.AccessController.doPrivileged(AccessController.jav
  a(Compiled
  at java.security.Security.getProviderAt(Security.java(Compiled
  at java.security.Security.getProvider(Security.java(Compiled
  at com.ibm.jsse2.y.a(Unknown
  .
  A javacore will report a deadlock between
  sun.misc.Launcher$ExtClassLoader
  and
  java.lang.Class
  

Local fix

• Setting a java system property of
  -Dibm.cl.eagerresolution=true
  may workaround this problem.
  

Problem summary

• This problem occurs when a class is loaded from a signed jar
  file.
  

Problem conclusion

• This defect will be fixed in:
  1.4.2 SR10
  .
  The JVM has been modified to prevent the deadlock
  .
  To obtain the fix:
  Install build 20071017 or later
  

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

  JAVA(1.3/1.4 CO

• Fixed component ID

  5648C9800

Applicable component levels

• R42A PSN

     UP

• R42L PSN

     UP

• R42W PSN

     UP

• R420 PSN

     UP