IBM Support

IV85592: CIFS CRASH DUE TO CORRUPT SMB_RQ CHAIN APPLIES TO AIX 7100-03

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • The CIFS driver may crash due to a
    corrupt smb_rq chain.  The stack trace
    will most likely look like this:
    
    nsmbdd:smb_iod_sendrq+0000D8
    nsmbdd:smb_iod_sendall@AF29_12+0002C4
    nsmbdd:smb_iod_waitrq+0002C8
    nsmbdd:smb_rq_reply+000020
    nsmbdd:smb_rq_simple+00005C
    nsmbdd:smb_smb_negotiate+000158
    nsmbdd:smb_iod_connect+0001F8
    nsmbdd:smb_iod_treeconnect+0000F0
    nsmbdd:smb_iod_addrq+0002EC
    nsmbdd:smb_rq_enqueue+00010C
    nsmbdd:smb_rq_simple+00004C
    nsmbdd:smb_smb_treeconnect+0001F0
    nsmbdd:smb_iod_treeconnect+000238
    nsmbdd:smb_iod_thread+000324
    

Local fix

Problem summary

  • The CIFS driver may crash due to a
    corrupt smb_rq chain. The stack trace
    will most likely look like this:
    
    nsmbdd:smb_iod_sendrq+0000D8
    nsmbdd:smb_iod_sendall@AF29_12+0002C4
    nsmbdd:smb_iod_waitrq+0002C8
    nsmbdd:smb_rq_reply+000020
    nsmbdd:smb_rq_simple+00005C
    nsmbdd:smb_smb_negotiate+000158
    nsmbdd:smb_iod_connect+0001F8
    nsmbdd:smb_iod_treeconnect+0000F0
    nsmbdd:smb_iod_addrq+0002EC
    nsmbdd:smb_rq_enqueue+00010C
    nsmbdd:smb_rq_simple+00004C
    nsmbdd:smb_smb_treeconnect+0001F0
    nsmbdd:smb_iod_treeconnect+000238
    nsmbdd:smb_iod_thread+000324
    

Problem conclusion

  • Fill up error field everytime instead of relying on previous
    values.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV85592

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-06-09

  • Closed date

    2016-08-05

  • Last modified date

    2017-01-20

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

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

    IV86632 IV86763 IV87818 IV87893 IV87975 IV88221

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U872354

       UP17/01/19 I 1000

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SG11R"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]

Document Information

Modified date:
20 April 2022