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MA46468 - OSP-WAIT after trace task (SFTR) crashes

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 APAR (Authorized Program Analysis Report)

Abstract

OSP-WAIT after trace task (SFTR) crashes

Error Description

Customer ran a trccnn with a buffer size of 160000 MB and went  
inhibited and we could not get out of it. No commands like      
wrksyssts, wrkdsksts, wrktrc, etc were able to be executed.    

Problem Summary

****************************************************************
* PROBLEM: (MA46468) Licensed Program = 5770999 for i 7.1,     *
*                                        i 7.2, and i 7.3      *
*           Crash/Hang Requiring an IPL to Recover             *
****************************************************************
* USERS AFFECTED: All IBM i operating system users.            *
****************************************************************
* RECOMMENDATION: Apply LIC PTF MF63810 for i 7.1.             *
*                 Apply LIC PTF MF63811 for i 7.2.             *
*                 Apply LIC PTF MF63812 for i 7.3.             *
****************************************************************
Customer ran a trccnn with a buffer size of 160000 MB and the  
system went inhibited and we could not get out of it. No        
commands like wrksyssts, wrkdsksts, wrktrc, etc were able to be
executed.                                                      

Problem Conclusion

A trace task (SFTR) crashed with LIC log 0C00280 and was holding
a shared lock on the trace control block gate. This prevented  
other tasks which access the trace control block from getting a
exclusive lock on the gate. This prevents jobs like wrksyssts,  
wrkdsksts, and wrktrc from running.                            
                                                               
The LIC Trace code was changed to release the shared lock, if an
exception occurs. Also, additional trace commands were changed  
to use shared locking to allow wrksyssts like commands without  
getting a exclusive gate lock.                                  

Temporary Fix

                       *********                                
                       * HIPER *                                
                       *********                                

Comments

Circumvention


PTFs Available

R710 MF65852   1000
R720 MF63811   7290
R730 MF63812   7283

Affected Modules

         
         

Affected Publications

Summary Information

Status............................................ CLOSED PER
HIPER........................................... Yes
Component.................................. 9400DG300
Failing Module.......................... RCHMGR
Reported Release................... R710
Duplicate Of..............................




System i Support

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Document Information

Modified date:
03 April 2019