kern/149308: FreeBSD 8.1-RELEASE kernel panic on Windows 7 Virtual PC

[Phil Kernick]

>Number:         149308
>Category:       kern
>Synopsis:       FreeBSD 8.1-RELEASE kernel panic on Windows 7 Virtual PC
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Aug 05 06:00:17 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Phil Kernick
>Release:        8.1-RELEASE
>Organization:
CQR Consulting
>Environment:
Not possible.  FreeBSD will not boot.
>Description:
FreeBSD 8.1-RELEASE will not run on Virtual PC on Windows 7 Ultimate x64.

It generates a kernel panic during boot.


ad0: 8095MB <Virtual HD 1. 1> at ata0-master WDMA2
acd0: DVDROM <Virual CD/> at ata1-master PIO4
ata1: WARNING - PREVENT_ALLOW read data overrun 18>0


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x1a4
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc088ec3f
stack pointer           = 0x28:0xc2e8cbe4
frame pointer           = 0x28:0xc2e7cbfc
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         = 12 (swi6: task queue)
trap number             = 12
panic: page fault
cpuid = 0
Uptime: 1s

>How-To-Repeat:
Create a new Virtual Machine, leave all the defaults, install FreeBSD 8.1.

Installation goes fine.  Reboot.

panic: page fault
cpuid = 0
Uptime: 1s


I've tried safe boot, single user boot, ACPI disabled, and it makes no difference.  It can't run when booting from a virtual hard drive.

>Fix:
None known.

>Release-Note:
>Audit-Trail:
>Unformatted: