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Message-Id: <200204141151.g3EBpAc59841@freefall.freebsd.org>
Date: Sun, 14 Apr 2002 04:51:10 -0700 (PDT)
From: Patrick Dung <dungkaitai@netscape.net>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: kern/37056: usb mouse with bios legacy support on hangs
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>Number:         37056
>Category:       kern
>Synopsis:       usb mouse with bios legacy support on hangs
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Apr 14 05:00:02 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Patrick Dung
>Release:        FreeBSD 4-Stable (kernel cvs date: 03-24-2002)
>Organization:
>Environment:
can't boot into the machine to run "uname -a"      
>Description:
I've a usb mouse. I set bios legacy support on. My PC is Gigabyte 6VXD7 (Dual PIII Via 694X chipset). Then I boot FreeBSD 4-stable smp kernel (self built). It hangs during the kernel is booting (at the very beginning), I captured some debug message:

Fatal trap 12: page fault while in kernel
mp_lock:00000002; cpuid = 0; lapic_id = 00000000
fault virtual address = 0x5048
fault code = supervisor mode, page not present
instruction pointer = 0x8:0xc38a2cf
stack pointer = 0x10:0xc0562fc8
frame pointer = 0x10:0xc0562fcc
code segment = base 0x0, limit 0xfffff, type 0x16
             = DPL 0, pres 1, def 32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 0 (swapper)
interrupt mask = none <- SMP:XXX
kernel : type 12 trap, code = 0
stopped at: cpu_set_fork_handler:0x13:  movl  %edx,0x8(%eax)
db>

>How-To-Repeat:
In BIOS, set USB on. Then set USB Keyboard and Mouse Legacy support On.
Then boot freebsd 4 stable (smp kernel).
>Fix:
Set Legacy support off.
>Release-Note:
>Audit-Trail:
>Unformatted:

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