IJ44047: CRASH IN GIDS_OK(), IP_OUTPUT_POST_FW(), IP_OUTPUT() AND TCP_OUTAPPLIES TO AIX 7200-05

APAR status

• Closed as program error.

Error description

• **************************************************************
  * USERS AFFECTED:
  * Systems running VIOS 3.1.3.x with any of the
  * following filesets at or between the given levels:
  * MIN          MAX          FILESET
  * 7.2.5.100    7.2.5.106    bos.mp64
    **************************************************************
  * ERROR DESCRIPTION:
  * System Crash at below stack:
  * CRASH INFORMATION:
  * CPU 25 CSA F0000000340E5600 at time of crash, error code
  * for LEDs: 30000000
  * pvthread+145500 STACK:
  * Ý08155840¨gids_ok+000060 (8000001053700021,
  * F10005000D930FF8 Ý??¨)
  * Ý08144CF8¨ip_output_post_fw+003538 (F0000000340E4490,
  * F10005000482FE00,
  * 0000000000000008)
  * Ý081450C8¨ip_output+000128 (??, ??, ??, ??, ??, ??)
  * Ý0818DBCC¨tcp_output+00194C (??)
  * Ý0818A8F4¨tcp_usrreq+0019B4 (??, ??, ??, ??, ??)
  * Ý0062E738¨soereceive_base+000DB8 (??, ??, ??, ??, ??, ??,
  * ??, ??)
  * Ý0062D930¨soereceive+000010 (??, ??, ??, ??, ??, ??, ??)
  * Ý0062D810¨soo_read+000410 (000000000000001C,
  * 0000000000000002,
  * 0000000000000000)
  * Ý0062D3A0¨soo_rw+000020 (??, ??, ??, ??, ??)
  * Ý006E9750¨IPRA.+0000F0 (??, ??, ??, ??, ??, ??)
  * Ý006E9A94¨IPRA.+000194 (??, ??, ??, ??, ??, ??)
  * Ý006E95F4¨keread+000194 (??, ??, ??, ??)
  * Ý0000394C¨syscall+000244 ()
  * Ýkdb_get_virtual_memory¨ no real storage @ 2D774E2D0
  * Ý900000000043410¨0900000000043410 ()
  * Ýkdb_read_mem¨ no real storage @ FFFFFFFFFFF5D50
  *
  * From dump, radix tree entry(rtentry) got freed,
  * and route struct did not got updated and hold an address
  * of rtentry which got freed, so while accessing the field
  * of gids it crashed.
    **************************************************************
  * RECOMMENDATION:
  * Install APAR IJ44047.
  * Prior to fix availability, an interim fix is available from
  * either
  * ftp://aix.software.ibm.com/aix/ifixes/ij44534/
  * https://aix.software.ibm.com/aix/ifixes/ij44534/
  * The ifix can be installed using Live Update (LU).
  * If LU is not used, installation of the ifix requires a
  * reboot.
    **************************************************************
  

Local fix

Problem summary

• System may crash with following stack trace.
  
  CRASH INFORMATION:
  CPU 25 CSA F0000000340E5600 at time of crash, error code
  for LEDs: 30000000
  pvthread+145500 STACK:
   08155840 gids_ok+000060 (8000001053700021,
  F10005000D930FF8  ?? )
   08144CF8 ip_output_post_fw+003538 (F0000000340E4490,
  F10005000482FE00,
     0000000000000008)
   081450C8 ip_output+000128 (??, ??, ??, ??, ??, ??)
   0818DBCC tcp_output+00194C (??)
   0818A8F4 tcp_usrreq+0019B4 (??, ??, ??, ??, ??)
   0062E738 soereceive_base+000DB8 (??, ??, ??, ??, ??, ??,
  ??, ??)
   0062D930 soereceive+000010 (??, ??, ??, ??, ??, ??, ??)
   0062D810 soo_read+000410 (000000000000001C,
  0000000000000002,
     0000000000000000)
   0062D3A0 soo_rw+000020 (??, ??, ??, ??, ??)
   006E9750 IPRA.$rwuio+0000F0 (??, ??, ??, ??, ??, ??)
   006E9A94 IPRA.$rdwr+000194 (??, ??, ??, ??, ??, ??)
   006E95F4 keread+000194 (??, ??, ??, ??)
   0000394C syscall+000244 ()
   kdb_get_virtual_memory  no real storage @ 2D774E2D0
   900000000043410 0900000000043410 ()
   kdb_read_mem  no real storage @ FFFFFFFFFFF5D50
  

Problem conclusion

• Code has been fixed to avoid this crash.
  

Temporary fix

•   *********
    * HIPER *
    *********
  

Comments

APAR Information

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

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

  IJ44512 IJ44543 IJ44749 IJ44786 IJ45295 IJ45346 IJ45427

Fix information

• Fixed component name

  AIX V7.2

• Fixed component ID

  5765CD200

Applicable component levels