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Date: Tue, 21 Jan 1997 17:31:50 -0500 (EST)
From: adrian@virginia.edu
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Subject: kern/2553: moused caused panic
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>Number:         2553
>Category:       kern
>Synopsis:       loading moused panics kernel when no mouse is installed.
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 21 14:40:01 PST 1997
>Last-Modified:
>Originator:     Adrian Filipi-Martin
>Organization:
UVA
>Release:        FreeBSD 2.2-BETA_A i386
>Environment:

	GW2K P5/60 (upgraded to P5/120), 40MB, IDE, PS/2 mouse on motherboard.

>Description:

	When booting without a mouse plugged in, moused causes the kernel 
	to panic.  Here is the panic message:

	Page fault while in kernel mode
	  fault virt. addr	= 0x8
	  fault code		= supervisor read, page not present
	  IP			= 0x8:0xf01b453b
	  SP			= 0x10:0xefbffdb0
	  FP			= 0x10:0xefbffdc8
	  CS			= base 0x0, limit 0xfffff, type 0x1b
	  proc. eflags		= inerrupt era, resume, IOPL = 0
	  cur. proc.		= 153 (moused)
	  panic: page fault

>How-To-Repeat:

	Unplug my mouse and reboot.

	N.B. Did not check whether starting moused at a leter time had the 
	same problems.

>Fix:
	
	Workaround: Plug my mouse in or make sure moused is not 
	loaded at boot time.

	A real fix probably involves the psm driver, which is beyond me.

>Audit-Trail:
>Unformatted: