IBM Support

IT08365: Process cimprovagt segfault during refresh of Hard Disk Drive partition information on Linux with Platform Agent 6.3.5

 

APAR status

  • Closed as fixed if next.

Error description

  • The IBM Systems Director Platform Agent (PA) on Linux x86_64
platform (both on ISD server and on endpoints), may process a
refresh of  Hard Disk Drive (HDD) partition information, when no
 change of HDD/partition information has been made. At times,
this can cause a memory access error and result in a segfault
and core dump in the cimprovagt process, followed by a crash

Impact:
The customer may see segfault records in Linux system log
(/var/log/messages).

Local fix

  • There is no usage change that will avoid this issue.

Problem summary

  • The unexpected refresh is causes by improper processing of the
redirection. When we try to read the redirection target file,
the updating of this file may not be finished yet. As a result,
the program defected change of the output, and started
refreshing.
When the issue happened, there will be record of segfault in
/var/log/messages file.
And after running
gdb /opt/ibm/icc/bin/cimprovagt -c <path_to_core_dump_file>,
and then inputing "where", the call stack will include
IC::OsHwMI::HDDThreadProcess() and
IC::OsHwMI::createPartitionNodes(bool).
Platforms:  Red Hat Enterprise Linux 6.0 (x86_64)
Versions:  Platform Agent 6.3 to 6.3.7

Problem conclusion

  • 



Temporary fix


    

  • Temporary fixes are available for specific releases. For
information to obtain and install the fix, go to
http://www-01.ibm.com/support/us/search and search for Technote
850394995.

    



Comments


    

  • 



APAR Information




    

  • APAR number
    IT08365
    • 

  • Reported component name
    IBM DIR AGT XLI
    • 

  • Reported component ID
    5765DRXLA
    • 

  • Reported release
    635
    • 

  • Status
    CLOSED  FIN
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2015-04-16
    • 

  • Closed date
    2015-05-22
    • 

  • Last modified date
    2018-04-24
    • 





    

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

    • 

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

    • 



Fix information


    



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SUPPORT","label":"IBM Worldwide Support"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"635","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SGZ2Z3","label":"IBM Systems Director"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"635","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            22 August 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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