Symptom:
After rolling out service to Db2 products, ARSSOCKD starts, hangs, and abends S0C4.
The successful startup message...
ARS0351I The ARSSOCKD instance ARCH1010 is ready
...is never produced.
___________________________________________________________
Looking at the dump:
PSW=47042001 80000000 00000000 11769074
(Running in PRIMARY, key 0, AMODE 64, DAT ON, SUPERVISOR STATE)
Enabled for PER I/O EXT MCH
Unable to identify the area at ASID(X'00A3') address 11769074.
ASCB166 at F96400, JOB(ARSTECH1), for the home ASID
ASXB166 at 9FD000 and TCB166V at 9C62E8 for the home ASID
HOME ASID: 00A6 PRIMARY ASID: 00A3 SECONDARY ASID: 00A6
General purpose register values
0-1 00000000_18616C48 00000000_129FE000
2-3 0000030E_00000000 00000000_12A1D000
4-5 00000000_1245E380 00000000_129FE000
6-7 00000000_11DF1CA0 0000030E_04AC1D08
8-9 00000200_40500240 0000030E_04AC1D08
10-11 00000000_00000008 0000030E_04AE5630
12-13 00000000_1A0D7EE8 00000000_7E655800
14-15 0000030E_04AC2488 00000000_11769FF4
LIST 11769074. ASID(X'00A3') POSITION(X'-04') LENGTH(X'08') INSTRUCTION
11769070 | 50F0 A000 | ST R15,X'0'(,R10)
11769074 | 5050 A004 | ST R5,X'4'(,R10)
R10 is the base. Looking back up we see (the psw is this 0x1074)
11768000 A7F40055 00000000 12A1D000 C3D8C3D4 | x4.......~}.CQCM |
11768010 C5E2C2F1 F1F1F040 4040F0F1 61F2F261 | ESB1110 01/22/ |
11768020 F1F8F1F5 4BF4F440 C8C3D8C3 F1F1F040 | 1815.44 HCQC110 |
11768030 D6E2A9F1 4BF94000 D7C9F9F0 F8F5F740 | OSz1.9 .PI90857 |
11768040 E2D440C3 D8C3F0F0 F4F65C40 F5F6F5F5 | SM CQC0046* 5655 |
11768050 60E5F4F2 40B440D9 D6C3D2C5 E340E2D6 | -V42 . ROCKET SO |
11768060 C6E3E6C1 D9C56B40 C9D5C34B 40F1F9F9 | FTWARE, INC. 199 |
11768070 F96B40F2 F0F1F840 C1939340 D9898788 | 9, 2018 All Righ |
11768080 A3A240D9 85A28599 A585844B 40000000 | ts Reserved. ... |
11768090 40404040 40404040 C0F403D1 0A8F0700 | {4.J.... |
Likely candidates for this problem are PI97869 or maybe PI97867.
But it's not a CMOD problem - contact Db2 support.
Ed