>>a) I see a couple of FREEMAIN (SSRV 78) trace entries pointing to a TCB in
>>read/write nucleus (TCB address is 00FDD4F8). Do these hold some useful
>>information for me?
>The only tcb I know of that actually, really is located in the R/W nucleus is
>the first tcb in the *master* address space. Every address space started after
>that starts with a tcb in LQSA. So unless the SSRV entries were for asid(1), I
>would find a tcb address in R/W nucleus highly suspicious.
The entries are for the current ASID, not 0001.
>Have you checked the storage FDD4F8? Is it really a tcb? (Easiest way to check
>is a cbf x'fdd4f8' str(tcb). If the eyecatcher is not there, the formatter
>will tell you).
Yes, I did. No error. Most fields contain x'00', and CBF says the TCB has ended.
Here are some samples:0001 009E 00FDD4F8 SSRV 78 813B67A6
0000FF03 00000088 009F5E48
009E00000001 009E 00FDD4F8 SSRV 78 8147D1FC 0000CD03 00008000
7F5C6000 009E00000001 009E
00FDD4F8 SSRV 78 8147D23C 0000CD03 00002000 7F5CE000
009E00000001 009E 00FDD4F8 SSRV 78
8147D25C 0000FF03 00000010 7FF80028
009E00000001 009E 00FDD4F8 SSRV 78 8147D272 0000FF03
00000020 7FF80008 009E0000
These are unconditional STORAGE RELEASE requests for key 0 storage in subpools
255 and 205 (LSQA/ELSQA). I see other entries for other subpools as well. ip
where for the return addresses says:ASID(X'009E') 013B67A6.
IEANUC01.IGC003+1536 IN READ ONLY NUCLEUSASID(X'009E') 0147D1FC.
IEANUC01.IEAVLSLR+0144 IN READ ONLY NUCLEUSASID(X'009E') 0147D23C.
IEANUC01.IEAVLSLR+0184 IN READ ONLY NUCLEUSASID(X'009E') 0147D25C.
IEANUC01.IEAVLSLR+01A4 IN READ ONLY NUCLEUSASID(X'009E') 0147D272.
IEANUC01.IEAVLSLR+01BA IN READ ONLY NUCLEUS In each case, I see an SVC 3
(exit) trace entry a couple of entries before
Interesting. Must be disabled code so that the TCB fields will never be used to
save status.
--
Peter Hunkeler
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