Date: Mon, 26 Mar 2001 02:22:17 -0500 (EST) From: Adam Kujawski <adamkuj@gatordog.com> To: <freebsd-net@freebsd.org> Subject: Page Fault using DUMMYNET & BRIDGE Message-ID: <Pine.BSF.4.31.0103260155300.62765-100000@gatordog.com>
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I'm getting a page fault, trap 12, whenever a packet from a bridged
interface matches a pipe fule in IPFW. Any suggestions?
dmesg:
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.2-RELEASE #0: Tue Mar 6 13:19:17 EST 2001
root@nexus.gatordog.com:/usr/src/sys/compile/NEXUS2
Timecounter "i8254" frequency 1193182 Hz
CPU: Cyrix 6x86 (486-class CPU)
Origin = "CyrixInstead" DIR=0x1531 Stepping=1 Revision=5
CPU cache: write-through mode
real memory = 67108864 (65536K bytes)
avail memory = 61046784 (59616K bytes)
Preloaded elf kernel "kernel" at 0xc0441000.
Preloaded userconfig_script "/boot/kernel.conf" at 0xc044109c.
md0: Malloc disk
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
isab0: <Intel 82371FB PCI to ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX ATA controller> port 0x3000-0x300f at device 7.1 on
pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
xl0: <3Com 3c905B-TX Fast Etherlink XL> port 0x6000-0x607f mem
0xe0000000-0xe000007f irq 1
1 at device 17.0 on pci0
xl0: Ethernet address: 00:10:5a:05:b4:a5
miibus0: <MII bus> on xl0
xlphy0: <3Com internal media interface> on miibus0
xlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl0: <RealTek 8139 10/100BaseTX> port 0x6100-0x61ff mem
0xe0001000-0xe00010ff irq 10 at device 20.0 on pci0
rl0: Ethernet address: 00:50:bf:16:19:c8
miibus1: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus1
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
fdc0: direction bit not set
fdc0: cmd 3 failed at out byte 1 of 3
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A, console
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
ppc0: parallel port not found.
IP packet filtering initialized, divert disabled, rule-based forwarding
disabled, default to accept, unlimited logging
DUMMYNET initialized (000608)
BRIDGE 990810, have 10 interfaces
-- index 1 type 6 phy 0 addrl 6 addr 00.10.5a.05.b4.a5
-- index 2 type 6 phy 0 addrl 6 addr 00.50.bf.16.19.c8
ad0: 516MB <DSAA-3540> [1049/16/63] at ata0-master PIO2
ad2: 2014MB <ST32122A> [4092/16/63] at ata1-master PIO4
kernel options:
options IPFIREWALL
options IPFIREWALL_VERBOSE
options IPFIREWALL_DEFAULT_TO_ACCEPT
options DUMMYNET
options NMBCLUSTERS=4096
options BRIDGE
options TCP_DROP_SYNFIN
options TCP_RESTRICT_RST
rc.conf:
kern_securelevel="2"
kern_securelevel_enable="YES"
gateway_enable="NO"
network_interfaces="rl0 lo0 xl0"
ifconfig_rl0="DHCP"
firewall_type="open"
sysctl.conf:
net.link.ether.bridge=1
net.link.ether.bridge_ipfw=1
net.inet.ip.fw.dyn_max=10000
net.link.ether.bridge_cfg=xl0:1,rl0:1
rc.firewall:
ipfw pipe 1 config bw 256Kbit/s queue 30KB
ipfw pipe 2 config bw 256Kbit/s queue 30KB
ipfw add 200 pass udp from 0.0.0.0 2054 to 0.0.0.0
ipfw add 400 pipe 1 ip from A.A.A.A to B.B.B.B
ipfw add 450 pipe 2 ip from B.B.B.B to A.A.A.A
So... if I try to ping B.B.B.B from A.A.A.A, the FreeBSD firewall
immediatly dies with a page fault.
Thanks,
Adam
________________________________________________________________
Adam Kujawski | Home: (419) 352-1289
adamkuj@gatordog.com | Work: (419) 261-3268
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