The storage R7 point to, and the storage at offset x'90' is in SP251 key 8. It 
is part of a load module. The fullword at R7+x'90' is the value seen in the 
PSW, so both the L as well as the BASSM have been executed. The program fails 
when the CP is accessing the instruction at the PSW's NSI. The storage at this 
address is a couple of x'00', and the storage is in SP1, key 8.
If anyting was allocated but not accessible, a S0C4-4 would occur, not an 
S0C4-11.
--Peter Hunkeler


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Peter Hunkeler
Sent: 22 July, 2016 15:51
To: [email protected]
Subject: S0C4-11 abend caused by BASSM to address with all X'00' bytes

I'm confused. Can I not see the obvious?


We've got an S0C4-11 abend in a batch job. The last instructions seem to be 

L R15,x'90'(,7)
BASSM R14,R15

R15 has the address that is seen in the PSW in the dump. The storage at this 
address *is* in the dump, and it contains a couple of X'00'.


How can the storage be in the dump when the abend code suggests it is not even 
getmained (S0C4-11)? Why is this not an S0C1 (operation exception caused by 
X'0000' at the PSW NSI address)?


The PSW in enabled, problem state, key 8. The storage pointed to by R15 is in 
SP 1, key 8.


Any hint what I'm missing?







--
Peter Hunkeler

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