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Message-Id: <199811242308.AAA06642@emmi.physik.TU-Berlin.DE>
Date: Wed, 25 Nov 1998 00:08:00 +0100 (CET)
From: Dirk Froemberg <ibex@physik.TU-Berlin.DE>
To: FreeBSD-gnats-submit@FreeBSD.ORG
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Subject: kern/8851: mounting an unconfigured device causes a panic
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>Number:         8851
>Category:       kern
>Synopsis:       mounting an unconfigured device causes a panic
>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 Nov 24 15:10:00 PST 1998
>Last-Modified:
>Originator:     Dirk Froemberg
>Organization:
>Release:        FreeBSD 3.0-RELEASE i386
>Environment:

	FreeBSD 3.0-RELEASE i386

>Description:

	Mounting an unconfigured device (e. g. /dev/scd0a, /dev/wcd0a,
	/dev/wfd0a) causes a panic.

>How-To-Repeat:

	hal ROOT dirk 1003 (~): cat /dev/wfd0a
	cat: /dev/wfd0a: Device not configured
	hal ROOT dirk 1004 (~): mount /dev/wfd0a /mnt

	Fatal trap 12: page fault while in kernel mode
	fault virtual address   = 0x42
	fault code              = supervisor read, page not present
	instruction pointer     = 0x8:0xf0190c2a
	stack pointer           = 0x10:0xf41f1db0
	frame pointer           = 0x10:0xf41f1e54
	code segment            = base 0x0, limit 0xfffff, type 0x1b
				= DPL 0, pres 1, def32 1, gran 1
	processor eflags        = interrupt enabled, resume, IOPL = 0
	current process         = 250 (mount)
	interrupt mask          =
	trap number             = 12
	panic: page fault

>Fix:
	
>Audit-Trail:
>Unformatted:

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