IV17950: POSSIBLE CRASH POSTING AIO/IOCP PACKET APPLIES TO AIX 5300-12

APAR status

• Closed as program error.

Error description

• No functional change
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:
  * Users of the 5300-12 Technology Level with the bos.iocp.rte
  * fileset at the 5.3.12.2 level.
  ****************************************************************
  * PROBLEM DESCRIPTION:
  * The system crashed in the AIO/IOCP kernel extension while
  * trying to access the IOCFD_LOCK in AioPostCompletionPacket.
  *
  * Stack trace similar to:
  *  00022080 abend_trap+000000 ()
  *  0056FCC4 slock+000564 (??, ??)
  *  00009558 .simple_lock+000058 ()
  *  F1000000C033D7D8 AioPostCompletionPacket+000038 (??, ??)
  *  00014D70 .hkey_legacy_gate+00004C ()
  *  05EC1988 aioiocp_post_packet+000088 (??)
  *  05EC16A8 fsfp_done+000208 (??, ??, ??)
  *  00385AD4 dioAIOdone+000094 (??)
  *  00385C20 dioIODone+000100 (??)
  *  00197350 internal_iodone_offl+000170 (??, ??)
  *  00197198 iodone_offl+000078 ()
  *  0019AA18 i_softmod+000418 ()
  *  001EBACC flih_util+000258 ()
  ****************************************************************
  * RECOMMENDATION:
  * Install APAR IV17950.
  ****************************************************************
  

Problem conclusion

• Avoid recursive lock.
  

Temporary fix

Comments

APAR Information

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

  IV08112

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

Fix information

• Fixed component name

  AIX 5.3

• Fixed component ID

  5765G0300

Applicable component levels

• R530 PSY

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