IV83668: DEADLOCK BETWEEN THE THREADS DURING CLASSLOADING ON IBM HYBRID J DKS

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: "thread2":
  at java.util.zip.ZipFile.getEntry(ZipFile.java:308)
  - waiting to lock <0x9fffffff5487d7d8> (a java.util.jar.JarFile)
  at java.util.jar.JarFile.getEntry(JarFile.java:227)
  at java.util.jar.JarFile.getJarEntry(JarFile.java:210)
  at
  sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:84
  0)
  at sun.misc.URLClassPath.getResource(URLClassPath.java:199)
  at java.net.URLClassLoader$1.run(URLClassLoader.java:358)
  at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:431)
  - locked <0x9fffffff549ccf78> (a java.lang.Object)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
  - locked <0x9fffffff549cc628> (a java.lang.Object)
  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
  .
  .
  .
  "thread1":
  at java.lang.ClassLoader.loadClass(ClassLoader.java:409)
  - waiting to lock <0x9fffffff549cc628> (a java.lang.Object)
  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
  at
  sun.security.jca.ProviderConfig$2.run(ProviderConfig.java:215)
  at
  sun.security.jca.ProviderConfig$2.run(ProviderConfig.java:206)
  at java.security.AccessController.doPrivileged(Native Method)
  at
  sun.security.jca.ProviderConfig.doLoadProvider(ProviderConfig.ja
  va:206)
  at
  sun.security.jca.ProviderConfig.getProvider(ProviderConfig.java:
  187)
  - locked <0x9fffffff54bbbfd8> (a
  sun.security.jca.ProviderConfig)
  at
  sun.security.jca.ProviderList.getProvider(ProviderList.java:232)
  at
  sun.security.jca.ProviderList$ServiceList.tryGet(ProviderList.ja
  va:433)
  at
  sun.security.jca.ProviderList$ServiceList.access$200(ProviderLis
  t.java:375)
  at
  sun.security.jca.ProviderList$ServiceList$1.hasNext(ProviderList
  .java:485)
  at java.security.KeyFactory.nextSpi(KeyFactory.java:294)
  - locked <0x9fffffff54c1d880> (a java.lang.Object)
  at java.security.KeyFactory.<init>(KeyFactory.java:137)
  at java.security.KeyFactory.getInstance(KeyFactory.java:172)
  at sun.security.x509.X509Key.buildX509Key(X509Key.java:220)
  at sun.security.x509.X509Key.parse(X509Key.java:170)
  at
  sun.security.x509.CertificateX509Key.<init>(CertificateX509Key.j
  ava:75)
  at sun.security.x509.X509CertInfo.parse(X509CertInfo.java:705)
  at sun.security.x509.X509CertInfo.<init>(X509CertInfo.java:169)
  at sun.security.x509.X509CertImpl.parse(X509CertImpl.java:1781)
  at sun.security.x509.X509CertImpl.<init>(X509CertImpl.java:196)
  at
  sun.security.provider.X509Factory.engineGenerateCertificate(X509
  Factory.java:97)
  at
  java.security.cert.CertificateFactory.generateCertificate(Certif
  icateFactory.java:407)
  at sun.security.pkcs.PKCS7.parseSignedData(PKCS7.java:299)
  at sun.security.pkcs.PKCS7.parse(PKCS7.java:158)
  at sun.security.pkcs.PKCS7.parse(PKCS7.java:126)
  at sun.security.pkcs.PKCS7.<init>(PKCS7.java:108)
  at
  sun.security.util.SignatureFileVerifier.getTimestamp(SignatureFi
  leVerifier.java:581)
  at
  sun.security.util.SignatureFileVerifier.getSigners(SignatureFile
  Verifier.java:534)
  at
  sun.security.util.SignatureFileVerifier.processImpl(SignatureFil
  eVerifier.java:272)
  at
  sun.security.util.SignatureFileVerifier.process(SignatureFileVer
  ifier.java:239)
  at java.util.jar.JarVerifier.processEntry(JarVerifier.java:317)
  at java.util.jar.JarVerifier.update(JarVerifier.java:228)
  at java.util.jar.JarFile.initializeVerifier(JarFile.java:348)
  at java.util.jar.JarFile.getInputStream(JarFile.java:418)
  - locked <0x9fffffff5487d7d8> (a java.util.jar.JarFile)
  at
  sun.misc.URLClassPath$JarLoader$2.getInputStream(URLClassPath.ja
  va:775)
  .
  .
  .
  .
  Found one Java-level deadlock:
  =============================
  "thread2":
    waiting to lock monitor 0x6000000000d61f68 (object
  0x9fffffff5487d7d8, a java.util.jar.JarFile),
    which is held by "thread1"
  "thread1":
    waiting to lock monitor 0x6000000000f381a8 (object
  0x9fffffff549cc628, a java.lang.Object),
    which is held by "thread2"
  

Local fix

• N/A
  

Problem summary

• Deadlock between the threads during classloading on hybrid
  platforms .
  

Problem conclusion

• Absence of SunRsaSign class in IBM Hybrid JDKs led to a deadlock
  between the threads doing classloading .  JDK is modified to
  include the SunRsaSign class.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR3       (8.0.3.0)
     7    SR10      (7.0.10.0)
  .
  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

• N/A
  

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 CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R800 PSY

     UP

• R700 PSY

     UP