PK69970: DEADLOCK BETWEEN APP AND EXT CLASSLOADERS IN GETPROVIDER()

APAR status

• Closed as duplicate of another APAR.

Error description

• Error Message: If running WAS an EC3 abend might be seen.
  No error messages from the JVM, it just hangs.
  .
  Stack Trace: N/A
  .
  JVM hangs, a deadlock is seen in the javadump, like:
  1LKDEADLOCK    Deadlock detected !!!
  NULL           ---------------------
  NULL
  2LKDEADLOCKTHR  Thread "WebSphere:ORB.thread.pool t=0089c968"
  (0x583E5500)
  3LKDEADLOCKWTR    is waiting for:
  4LKDEADLOCKMON      sys_mon_t:0x5682A284 infl_mon_t: 0x5682A2C4:
  4LKDEADLOCKOBJ
  sun/misc/Launcher$ExtClassLoader@1F20C428/1F20C434:
  3LKDEADLOCKOWN    which is owned by:
  2LKDEADLOCKTHR  Thread "WebSphere:ORB.thread.pool t=0089c448"
  (0x583E4D00)
  3LKDEADLOCKWTR    which is waiting for:
  4LKDEADLOCKMON      sys_mon_t:0x5682A394 infl_mon_t: 0x5682A3D4:
  4LKDEADLOCKOBJ
  sun/misc/Launcher$AppClassLoader@1F210EF0/1F210EFC:
  3LKDEADLOCKOWN    which is owned by:
  2LKDEADLOCKTHR  Thread "WebSphere:ORB.thread.pool t=0089c968"
  The thread holding the sun.misc.Launcher$ExtClassLoader lock has
  a stack similar to:
  3XMTHREADINFO      "WebSphere:ORB.thread.pool t=0089c448"
  (TID:0x583E4D00, sys_thread_t:0x583E0E34, state:B, native
  ID:0x19D6D120)
  prio=5
  4XESTACKTRACE          at
  sun/security/jca/ProviderConfig.getProvider(ProviderConfig.java:
  227(Comp
  iled Code))
  4XESTACKTRACE          at
  sun/security/jca/ProviderList.getProvider(ProviderList.java:251(
  Compiled
  Code))
  4XESTACKTRACE          at
  sun/security/jca/ProviderList$ServiceList.tryGet(ProviderList.ja
  va:443(C
  ompiled Code))
  

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

• APAR PK69970 is a sysroute of APAR IZ22372. The fix for IZ22372
  is delivered SDK 1.5.0 SR8. APA PK69970 is being closed DUP  of
  PK68508 because this apar documents the delivery of JAVA FOR
  Z/OS SDK 1.5.0 SR8a.
  

APAR Information

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

  IZ22372

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

Fix information

Applicable component levels