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Date: Sun, 22 Oct 2000 15:25:16 -0700 (PDT)
From: jeff+freebsd@spotlife.com
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Subject: kern/22224: ipfw pipe command causes kernel panic
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>Number:         22224
>Category:       kern
>Synopsis:       ipfw pipe command causes kernel panic
>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 Oct 22 15:30:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Jeff Kletsky
>Release:        4.1.1-STABLE (cvsup of 2000-10-21)
>Organization:
SpotLife Inc.
>Environment:
FreeBSD port7.pn.wagsky.com 4.1.1-STABLE FreeBSD 4.1.1-STABLE: 
Sun Oct 22 08:51:27 PDT 2000
root@port4.pn.wagsky.com:/usr/src/sys/compile/GOLDENGATE.20001022
i386

>Description:
With bridging enabled (fxp0/fxp1), and one_pass not set, 
the following commands cause a kernel panic

ipfw pipe 1097 config
ipfw add 20197 pipe 1097 ip from 64.220.148.97 to any


Fatal trap 12: page fault while in kernel mode
fault virtual address  = 0xc055064a
fault code             = supervisor write, page not present
instruction pointer    = 0x8:0xc0176d57
stack pointer          = 0x10:0xc02cb860
frame pointer          = 0x10:0xc02cb86c
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        = Idle
interrupt mask         = net
trap number            = 12
panic: page fault
>How-To-Repeat:
ipfw pipe 1097 config
ipfw add 20197 pipe 1097 ip from 64.220.148.97 to any

(consistently)

ipfw rules and kernel config to follow 
(once I figure out how to get them off the "non-existent" machine)

>Fix:


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


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