Date: Tue, 10 Feb 1998 10:13:41 -0800 (PST) From: wefa@unicom.talkline.de To: freebsd-gnats-submit@FreeBSD.ORG Subject: kern/5703: CDROM Media Error triggers complete system lockup Message-ID: <199802101813.KAA14179@hub.freebsd.org>
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>Number: 5703
>Category: kern
>Synopsis: CDROM Media Error triggers complete system lockup
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Feb 10 10:20:00 PST 1998
>Last-Modified:
>Originator: Christoph Weber-Fahr
>Organization:
O.tel.o Communicoations
>Release: 2.2.5-RELEAS
>Environment:
FreeBSD hektor.otelo-call.de 2.2.5-RELEASE FreeBSD 2.2.5-RELEASE #0: Thu Jan 29
22:07:42 CET 1998 root@hektor.otelo-call.de:/usr/src/sys/compile/HEKTOR i386
>Description:
Plain vanilla '486 System with aha1542, 2 1GB SCSI disks and a
Toshiba 5201 SCSI CDROM. Trying to cp -R a part of the CDROM to
disk. (Only special is that the cdrom is accessed through a local
nfs (Re-)mount). After some time the CDROM encounters a Media Error:
"cd0(aha0:0:0): MEDIUM ERROR info:0x4a284 asc:15,0 Random positioning error"
After this the system solidly locks, though the kernel seems to
continue working.
Some data points:
I can...
- switch consoles
- scroll consoles (with scroll lock)
- open TCP connections to the system
- ping the system
- Even the Console Screen saver appears after some
time and disappears after pressing a key.
I can't
- enter any key into a shell on the console.
- log in on console (login doesn't react)
- log in via telnet (no login banner appears)
- deliver mail (no sendmail banner appears)
- ^Z or ^C the running cp process
This state remains - no timeouts occur within
at least 10 Minutes.
>How-To-Repeat:
See above. Specifically, the problem _is_ repeatable here.
>Fix:
>Audit-Trail:
>Unformatted:
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