PK46569: HANG DURING MONITOR ENTER

APAR status

• Closed as program error.

Error description

• Error Message: The hang happens intermittently with one thread
  trying to recursively enter the monitor and another thread
  trying to perform a contended enter on the same monitor.
  Stack Trace: The threads will have the following stack traces:
  Thread 1:
  at 0xd01117c8 in pthread_yield+0x60 (libpthreads.a)
  at 0xd0420cec in sched_yield+0x20 (libc.a)
  at 0xd345f784 in sysThreadYield+0x58 (libhpi.a)
  at 0xd331d22c in lkMonitorEnter+0x1f8 (libjvm.a)
  Thread 2:
  at 0xd011029c in _global_lock_common+0x35c (libpthreads.a)
  at 0xd011c10c in _mutex_lock+0x24c (libpthreads.a)
  at 0xd34636a8 in cooperative_mutex_lock+0x30 (libhpi.a)
  at 0xd3463270 in sysMonitorEnter+0x124 (libhpi.a)
  at 0xd331d314 in lkMonitorEnter+0x2e0 (libjvm.a)
  .
  N/A
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: IBM WebSphere Application Server version     *
  *                 6.0.2 users.                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: Hang during monitor enter               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  This APAR ships a fix for IBM Software Developers Kit (SDK)
  
  APAR PK41690. Please refer to APAR PK41690 for additional
  technical details.
  

Problem conclusion

• An iFix has been shipped.
  

Temporary fix

Comments

APAR Information

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

  PK41690

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

Modules/Macros

• SDK
  

Fix information

• Fixed component name

  WEBSPH APP SERV

• Fixed component ID

  5724J0800

Applicable component levels

• R60I PSY

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