II07257: PSA OVERLAY OR RANDOM OVERLAYS

APAR status

• INTRAN

Error description

• Psa overlay or random overlays.  An oem product gets control
  during address space termination.  It does a PC instruction but
  does not get control back because the registers are not set up
  corretly.  Control is given back to a random location but
  usually a low address.  The random code that gets control can
  then overlay the psa since it was entered in the middle. The
  trace table will look something like the following:
  Many SVC A and 3C's issued from the same product (different
  modules).  Then SVC A 070c0000 80Bf51f4
                  SVCR A 070c0000 80BF51F4
                  PC ... 0 00EF1146  02010
                  PT ... 0 00EF1146  004B <-or any asid
                  PC ... 0 00EF1166  02006
                  PT ... 0 00EF1166  004B
  At this point control should be given back to 00EF1166, but
  instead control is given to something like 070c3000 0000637A.
  In this case 0000637a was dfp module which in turn overlaid the
  psa because of bad regs and the bad entry.
  The above PC and PT entries must take place and point to the
  OEM code mentioned on the scratch pad of this apar.
  Please contact the IBM support center for the information on
  the scratch pad.
  

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

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

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

Fix information

Applicable component levels