IV78743: /DEV/KMEM SHOULD NOT BE KEPT OPEN OR USED BY JVM

APAR status

• Closed as program error.

Error description

• Error Message: Command "fuser /dev/kmem" shows a process ID
  which refers to a Java process.
  For example:
  $ fuser /dev/kmem
  /dev/kmem:  18153880
  $ ps -ef <PIPE> grep 18153880
      root 18153880        1   0   Nov 06  pts/2  9:03
  /usr/IBM/WebSphere855/java_1.7.1_64/bin/java
  .
  Stack Trace: N/A
  .
  N/A
  

Local fix

• N/A
  

Problem summary

• The problem is caused by JVM using /dev/kmem to get some system
  info
  

Problem conclusion

• The JVM has been modified to use different API and not use
  /dev/kmem anymore
  .
  This APAR will be fixed in the following Java Releases:
     7 R1 SR3 FP30  (7.1.3.30)
     8    SR2 FP10  (8.0.2.10)
  .
  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

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

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R270 PSY

     UP