Date: 23 Dec 2002 23:02:13 -0600 From: Kirk Strauser <kirk@strauser.com> To: freebsd-alpha@freebsd.org Subject: PC64 getting kernel panics while using bridged networking Message-ID: <874r94f1re.fsf@pooh.honeypot.net>
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I have a PC64 machine with a recently-installed copy of FreeBSD 5.0-RC1
(plus a cvsup or two since installation). I want to use it as a bridged
firewall using two fxp NICs. The kernel is a derivative of GENERIC with
inapplicable devices commented out, and only one option:
options PFIL_HOOKS
added (I'm using 5.0 in the first place because I want to use ipf on the
bridge).
My trivial bridge setup is:
# cat /usr/local/etc/rc.d/0.bridge.sh
#!/bin/sh
kldload bridge
sysctl net.link.ether.bridge_cfg="fxp0,fxp1"
sysctl net.link.ether.bridge_ipf=1
sysctl net.link.ether.bridge=1
and my ipf.rules consists of only:
pass in all
pass out all
for now. The setup works well for short periods of time, but the kernel
panics as soon as a small load crosses the bridge. Excerpts from dmesg:
fxp0: promiscuous mode enabled
fxp1: promiscuous mode enabled
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
ether_input: drop bdg packet, bif 0x5
fatal kernel trap:
trap entry = 0x4 (unaligned access fault)
faulting va = 0xfffffe0000028e9a
opcode = 0x28
register = 0x3
pc = 0xfffffc00003614a8
ra = 0xfffffc0000362284
sp = 0xfffffe000a36ba60
curthread = 0xfffffc000f71fd10
pid = 19, comm = intr: fxp0
panic: trap
syncing disks, buffers remaining...
done
Uptime: 8m28s
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
I have never experienced these panics using the system in non-bridged mode,
i.e. as a regular host on the network. The repeatability is 100%: if I
enable bridging, then the kernel panics within minutes.
Any ideas? I am *very* new to the Alpha platform (I only built my first
machine within the last month), although I have a bit of experience with
FreeBSD/x86.
Please note that although I'd be willing to try a bog-standard GENERIC
kernel, I don't have one on the system anymore, and it takes several hours
to build one. As I've dedicated tonight to a 'buildworld' to update the
compiler toolchain before giving this another effort, I'll have to wait
until tomorrow (at the earliest) to try it. However, my kernel really
should be very similar to GENERIC (minus the one addition), and I only used
the minimal optimizations ('-O') from /etc/defaults/make.conf to build it.
--
Kirk Strauser
In Googlis non est, ergo non est.
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