IJ11064: POOL ALLOCATOR REFERENCES MEMORY OUTSIDE HEAP APPLIES TO AIX 7200-01

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The pool allocator problem fixed in 7.2 by IJ07297 need
  to
  be backported in earlier releases.
  It doesn't only occur with ASLR, for example the
  following:
  MALLOCOPTIONS=pool artexget -r
  /etc/security/artex/samples
  /default.xml
  Will core dump, the stack will look like :
  Segmentation fault in free_pool_a at 0xd012735c ($t1)
  0xd012735c (free_pool_a+0x1c) 7d864a2e lhzx r12,r6,r9
  (dbx) where
  free_pool_a() at 0xd012735c
  

Local fix

• Don't use MALLOCOPTIONS=pool.
  

Problem summary

• argtex comamnd dumps core when using pool malloc allocator
  

Problem conclusion

• avoid pool map calculation for non-pool requests and fall back
  to yorktown free api.
  

Temporary fix

Comments

• 6100-09 - use AIX APAR IJ11661
  7100-04 - use AIX APAR IJ08835
  7100-05 - use AIX APAR IJ11846
  7200-01 - use AIX APAR IJ11064
  7200-02 - use AIX APAR IJ10670
  

APAR Information

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

  IJ08835

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

Fix information

• Fixed component name

  AIX V7.2

• Fixed component ID

  5765CD200

Applicable component levels

• R720 PSY U883806

     UP19/01/29 I 1000