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IZ79162: CRASHED IN CACHEFS_CACHE_SYNC APPLIES TO AIX 6100-05

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APAR status

  • Closed as program error.

Error description

  • if timing is correct and we are running debug version of
cachefs.ext then during unmount of a cachefs mount, the
machine will crash with stack trace similiar to
￭04E4CAECcachefs_cache_sync+0002CC (F100010C0200EA00)
￭04E4CDC0cachefs_cache_destroy+000160 (F100010C0200EA00)
￭04E434DCcachefs_delete_cachep+00019C (F100010C0200EA00)
￭04E44C08cachefs_unmount+0006C8 (F1000106041B5810,
0000000000000000, F100010608B9D47C)
￭04E8447Caix2onc_unmount+00005C (F1000106041B5810,
0000000000000000, F100010608B9D47C)
￭00608218vfs_unmount+000098 (??, ??, ??)
￭00605B80kunmount+000200 (??, ??, ??)
￭00606408uvmount+000208 (??, ??)
￭00003850ovlya_addr_sc_flih_main+000130 ()
￭10000C08unmountmain+000088 (??, ??)
￭10000618main+0000D8 (??, ??)
￭10000168__start+000068 ()

Local fix

  • 



Problem summary


    

  • if timing is correct and we are running debug version of
cachefs.ext then during unmount of a cachefs mount, the
machine will crash with stack trace similiar to
 04E4CAEC cachefs_cache_sync+0002CC (F100010C0200EA00)
 04E4CDC0 cachefs_cache_destroy+000160 (F100010C0200EA00)
 04E434DC cachefs_delete_cachep+00019C (F100010C0200EA00)
 04E44C08 cachefs_unmount+0006C8 (F1000106041B5810,
0000000000000000, F100010608B9D47C)
 04E8447C aix2onc_unmount+00005C (F1000106041B5810,
0000000000000000, F100010608B9D47C)
 00608218 vfs_unmount+000098 (??, ??, ??)
 00605B80 kunmount+000200 (??, ??, ??)
 00606408 uvmount+000208 (??, ??)
 00003850 ovlya_addr_sc_flih_main+000130 ()
 10000C08 unmountmain+000088 (??, ??)
 10000618 main+0000D8 (??, ??)
 10000168 __start+000068 ()

    



Problem conclusion


    

  • remove faulty ASSERT().

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IZ79162
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2010-07-05
    • 

  • Closed date
    2010-07-05
    • 

  • Last modified date
    2013-03-28
    • 





    

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

    
IZ74950
    

    • 

  • 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  U836649
       UP10/08/20  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            28 March 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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