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IZ78694: ITII AT .SIMPLE_UNLOCK_MEM+0000 APPLIES TO AIX 6100-05

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APAR status

  • Closed as program error.

Error description

  • nfs client machine crashed while doing livedump on
nfs sub system. the stack trace looks like
KDB(0)> f
pvthread+04A000 STACK:
￭00009958.simple_unlock_mem+000040 ()
￭001108A0e_sleep_thread+000060 (??, ??, ??)
￭00014F50.kernel_add_gate_cstack+000030 ()
￭04976D74aix_cv_wait_sig+000074 (??, ??)
￭049A958Cwait_for_move_ref+00004C (??)
￭049AB1C4nfs4_setup_moved+000104 (??, ??, ??, ??, ??)
￭049B53C0renew_fs_locations+000160 (??, ??)
￭049D5C8Cnfs4_getattr_otw+00054C (??, ??, ??)
￭049D6310nfs4getattr+000290 (??, ??, ??)
￭0499AF48nfs4_getattr+0001C8 (??, ??, ??)
￭005FBC30vnop_getattr+000050 (??, ??, ??)
￭001FFE94procfsGetattrCwdRoot+000254 (??, ??, ??, ??)
￭0020079CprocfsGetattr+00039C (??, ??, ??)
￭005FBC30vnop_getattr+000050 (??, ??, ??)
￭005ED398getstat+000038 (??, ??, ??, ??, ??)
￭005EEBB0statx+000390 (??, ??, ??, ??)
￭00003850ovlya_addr_sc_flih_main+000130 ()
where we are trying to release the f_lock within
the fsid but we don't have it locked.
basically nfs4_fsid_rele() may release the f_lock.

Local fix

  • 



Problem summary


    

  • nfs client machine crashed while doing livedump on
nfs sub system. the stack trace looks like
KDB(0)> f
pvthread+04A000 STACK:
 00009958 .simple_unlock_mem+000040 ()
 001108A0 e_sleep_thread+000060 (??, ??, ??)
 00014F50 .kernel_add_gate_cstack+000030 ()
 04976D74 aix_cv_wait_sig+000074 (??, ??)
 049A958C wait_for_move_ref+00004C (??)
 049AB1C4 nfs4_setup_moved+000104 (??, ??, ??, ??, ??)
 049B53C0 renew_fs_locations+000160 (??, ??)
 049D5C8C nfs4_getattr_otw+00054C (??, ??, ??)
 049D6310 nfs4getattr+000290 (??, ??, ??)
 0499AF48 nfs4_getattr+0001C8 (??, ??, ??)
 005FBC30 vnop_getattr+000050 (??, ??, ??)
 001FFE94 procfsGetattrCwdRoot+000254 (??, ??, ??, ??)
 0020079C procfsGetattr+00039C (??, ??, ??)
 005FBC30 vnop_getattr+000050 (??, ??, ??)
 005ED398 getstat+000038 (??, ??, ??, ??, ??)
 005EEBB0 statx+000390 (??, ??, ??, ??)
 00003850 ovlya_addr_sc_flih_main+000130 ()
where we are trying to release the f_lock within
the fsid but we don't have it locked.
basically nfs4_fsid_rele() may release the f_lock.

    



Problem conclusion


    

  • in nfs4_fsid_rele(), if wait for livedump don't release the
f_lock.

    



Temporary fix


    

  • 



Comments


    

  • 6100-02 - use AIX APAR IZ79753
6100-03 - use AIX APAR IZ79356
6100-04 - use AIX APAR IZ78920
6100-05 - use AIX APAR IZ78694
6100-06 - use AIX APAR IZ78361
6100-06 - use AIX APAR IZ79687
7100-00 - use AIX APAR IZ79369

    



APAR Information




    

  • APAR number
    IZ78694
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2010-07-02
    • 

  • Closed date
    2010-07-02
    • 

  • Last modified date
    2013-03-28
    • 





    

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

    
IZ78361
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY  U834687
       UP10/08/20  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

              [{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSMV87","label":"AIX 6.1 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSMVAX","label":"AIX Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSAUMY","label":"IBM AIX Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11Q","label":"AIX 6.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            28 March 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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