PI72644: CLEARMAKE MAY HANG ON LINUX WHEN ATTEMPTING TO EXECUTE A CHILD MAKE OR BUILD SCRIPT.

Rational ClearCase Fix Pack 4 (9.0.0.4) for 9.0
Rational ClearCase Fix Pack 5 (9.0.0.5) for 9.0
Rational ClearCase Fix Pack 6 (9.0.0.6) for 9.0

APAR status

• Closed as program error.

Error description

• When attempting to build using the IBM Rational ClearCase
  clearmake tool, a child clearmake session may hang with a
  conditional variable deadlock. This failure occurs
  intermittently and appears limited to clearmake 9.0.x on Linux.
  
  In that environment, clearmake uses a second thread to handle
  signals while waiting on the child process (or processes for a
  parallel/distributed build) to return status information. When
  clearmake executes a child process, it does so using "fork()".
  IN the child, this fork performs some cleanup before performing
  the directed operations. This cleanup includes cleaning up some
  thread synchronization infrastructure. If the parent process had
  already started using the infrastructure before the fork()
  actually occurred, lock information may have been copied from
  the parent to the forked child. When we attempt to clean it up,
  we attempt to get a lock, and wait for an indefinite amount of
  time.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of ClearCase clearmake.                                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * In rare situations, ClearCase clearmake could hang when      *
  * starting a child process to execute a build step.            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• A fix is available in ClearCase version 9.0.0.4
  

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

  CC&CC MSITE WIN

• Fixed component ID

  5724G3300

Applicable component levels

• R900 PSY

     UP