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IJ02374: SYSTEM CRASH IN LOCK_READ+000060 () APPLIES TO AIX 7200-03

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APAR status

  • Closed as program error.

Error description

  • System crash while running workload with SMC-R enabled LPAR
with below stack, KDB(0)> stack pvthread+0A1C00 STACK:
Ý0000BD80¨.lock_read+000060 ()
ÝF1000000C19B2DB0¨smcr_initiate_DL+000090 (??, ??, ??, ??)
ÝF1000000C19D2460¨smcr_send_llc_add_link_cont_req_res+ 000420
(??, ??, ??, ??, ??)
ÝF1000000C19C890C¨smcr_client_process_llc_add_link_cont+ 000FAC
(??) ÝF1000000C19D707C¨IPRA.$run_workqueue+00017C (??)
ÝF1000000C19D782C¨worker_thread+00020C (??, ??, ??)
Ý00014D70¨.hkey_legacy_gate+00004C ()
Ý0030A0F8¨procentry+000038 (??, ??, ??, ??)

Local fix

  • 



Problem summary


    

  • System crash while running workload with SMC-R enabled LPAR
with below stack, KDB(0)> stack pvthread+0A1C00 STACK:
 0000BD80 .lock_read+000060 ()
 F1000000C19B2DB0 smcr_initiate_DL+000090 (??, ??, ??, ??)
 F1000000C19D2460 smcr_send_llc_add_link_cont_req_res+ 000420
(??, ??, ??, ??, ??)
 F1000000C19C890C smcr_client_process_llc_add_link_cont+ 000FAC
(??)  F1000000C19D707C IPRA.$run_workqueue+00017C (??)
 F1000000C19D782C worker_thread+00020C (??, ??, ??)
 00014D70 .hkey_legacy_gate+00004C ()
 0030A0F8 procentry+000038 (??, ??, ??, ??)

    



Problem conclusion


    

  • Fixed the code to make sure that link pointer will not be freed
by other thread while the LLC message processing is on-going.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IJ02374
    • 

  • Reported component name
    AIX V7.2
    • 

  • Reported component ID
    5765CD200
    • 

  • Reported release
    720
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2017-12-04
    • 

  • Closed date
    2017-12-04
    • 

  • Last modified date
    2018-09-21
    • 





    

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

    
IJ02264
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.2
    • 

  • Fixed component ID
    5765CD200
    • 



Applicable component levels


    

  • R720  PSY  U876911
       UP18/09/13  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            21 September 2018
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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