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- Path: sparky!uunet!gumby!wupost!crcnis1.unl.edu!cse!hickman
- From: hickman@cse.unl.edu (Hubert B. Hickman)
- Newsgroups: comp.sys.next.sysadmin
- Subject: System panic while reading CDROM
- Date: 6 Nov 1992 07:02:43 GMT
- Organization: University of Nebraska--Lincoln
- Lines: 60
- Distribution: world
- Message-ID: <1dd5ajINNd7q@crcnis1.unl.edu>
- NNTP-Posting-Host: cse.unl.edu
-
- Well I seem to have myself an interesting problem. Some time
- back I received the NeXT 3rd party demo CDROM. I accessed some
- of the demos shortly after I received it and everything seemed
- pretty much OK. Note that at this time I was running 2.1 and
- had to update the CDROM filesystem as per instructions included
- in the CDROM.
-
- Since that time I have upgraded to 3.0. Since our local user
- group is holding a meeting on Saturday, I thought it would be
- a good idea to show this CDROM at the meeting. So, I take
- it out, pop it in the drive and try to navigate around in it.
- Well, at about the 4th or fifth directory - BLOOEY - system
- panic. This happens consistently every time I try to read the
- demo CD. I can read the 3.0 upgrade CD just fine, runs apps of
- it, copy things from it, etc. No problems with it.
-
- The only difference that is noticeable from the console is that
- the 3rd party demo CD initialized the CDROM filesystem and the
- 3.0CD does not :
- -----
- Disk is Write Protected
- CDROM File System: LOADED
- CDROM File System: Initialized
- Nov 6 00:45:08 Workspace: Mounted scsi disk at /Q2_92
- Nov 6 00:45:17 Workspace: Unmounted foreign disk at /Q2_92
- Disk Label: NeXTSTEP_3.0
- Disk Capacity 659MB, Device Block 2048 bytes
- Disk is Write Protected
- Nov 6 00:45:59 Workspace: Mounted hard disk at /NeXTSTEP_3.0
- Nov 6 00:46:40 Workspace: Unmounted hard disk at /NeXTSTEP_3.0
- ---------------
- The system panics all look like the following:
- ------------ #1
- Nov 5 23:22:00 localhost syslog: Workspace logged in
- Nov 5 23:22:25 localhost mach: Disk is Write Protected
- Nov 5 23:22:28 localhost mach: CDROM File System: LOADED
- Nov 5 23:22:28 localhost mach: CDROM File System: Initialized
- Nov 5 23:22:42 localhost mach: unexpected kernel page fault failure
- Nov 5 23:22:42 localhost mach: trap: type 0x410 fcode 5 rw 3 faultaddr 0x0
- Nov 5 23:22:42 localhost mach: trap: pc 0x4002396 sp 0xfff60 sr 0x2000
- Nov 5 23:22:42 localhost mach: trap: cpu 0 th 0x10146dcc proc 0x10146910 pid 13
- 1 pcb 0x10fa600c
- Nov 5 23:22:42 localhost mach: traceback: fp 0x10fa6cfc
- Nov 5 23:22:42 localhost mach: called from pc 040908e2 fp 10fa6d10 4-args 10fc2
- 350 00000000 00002000 10fa6d48
- {lots of these} .....
- Nov 5 23:22:42 localhost mach: last fp 0x10fa6f81
- Nov 5 23:22:42 localhost mach: panic: (Cpu 0) MMU invalid descriptor during tab
- le walk
- -----------
-
- What is going on here? I have had no other system panics on my machine
- (in fact this is the first one that I remember) - and machine is an
- early slab!
-
- Thanks for any help,
-
- Hubert Hickman
- hickman@cse.unl.edu
-
-