CAC 2015-11-04

round_robin

Very strange. Gets a long way into install; just starts initializing dska_01c:

DBG(205355488)> CPU FAULT: Fault 16(020), sub 0(00), dfc N, 'SDW0.F == 0'
DBG(205355488)> CPU FAULT: 00255:023742 bound_mdxhdx_:volume_registration_mgr_+022162
DBG(205355488)> CPU FAULT:      2368          if volume_registration.version ^= Volume_Registration_Version_2
DBG(205355488)> CPU FAULT: 00255:023742 1 000000236100 (LDQ PR0|0) 000000 236(0) 1 0 0 00

DBG(205380890)> DISK NOTIFY: Reset status 0
DBG(205380890)> DISK NOTIFY: Reset status 1

DBG(205383248)> CPU FAULT: Fault 17(021), sub 0(00), dfc N, 'PTW0.F == 0'
DBG(205383248)> CPU FAULT: 00032:000555 bound_disk_util_1:read_disk+0555
DBG(205383248)> CPU FAULT:       212     else dataptr -> bdata = rdskp -> bdata;
DBG(205383248)> CPU FAULT: 00032:000555 0 000140100540 (MLR PR0|140,F1) 000140 100(1) 0 0 0 00

DBG(205384503)> DISK NOTIFY: Reset status 0
DBG(205384503)> DISK NOTIFY: Seek512 1
DBG(205384503)> DISK DEBUG: diskSeek512: Tally 1 (1)
DBG(205384503)> DISK NOTIFY: Read 1
DBG(205384503)> DISK DEBUG: diskRead: Tally 1024 (2000)
DBG(205384503)> DISK TRACE: Disk read    1      255   2

DBG(205387593)> CPU FAULT: Fault 20(024), sub 1(01), dfc N, 'acvFault: fetchDSPTW out of segment bounds fault'
DBG(205387593)> CPU FAULT: 00041:030276 bound_library_wired_:pl1_operators_+07766
DBG(205387593)> CPU FAULT:     007766  aa  6 00030 3501 20   5133      eppap    sp|stack_frame.operator_ptr,* set up operator ptr of frame being returned to
DBG(205387593)> CPU FAULT: 00041:030276 0 000031350120 (EPP0 PR0|31,N*) 000031 350(0) 1 0 1 00

We see the page fault for fetching the disk memory; and then a segment bounds fault in wired, which is a fatal Multics error.

Turning steady clock on prevents the fault.

It faults even with ncpus set to 1.

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License