Packet Filtering Problem

drewmanto · n00b Joined: 29 May 2004 Posts: 26 Location: Arizona

Whenever i recompile the kernel with packetfiltering support i can not bring up my ath0 with ifconfig.
The machine just hardlocks. This is even with ip_tables not reunning yet. I was planning on enabling it in teh kernel then installing the iptables tools. However with the support enabled my laptop hardlocks on ifconfig ath0 up.

If i then recompile the kerne withOUT support on the next reboot my wireless card works again.

Im running gentoo-dev-sources 2.6. I have wireless tools emerge and i also am using the madwifi drivers for my atheros based wifi card.

The problem is im not sure what is casuing the fault because of a hardlock. If i had to guess it would be that madwifi drivers and packet filtering support do not play well together. Although maybe its wireless tools and packet filtering support. ??
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drewmanto · n00b Joined: 29 May 2004 Posts: 26 Location: Arizona

NEW INFO: here is the error code i get in the lockup.
I have narrowed it down to being a problem between
PACKET FILTER support in the kernel AND madwifi-drivers.
For some reason bringing up the ath0 madwifi interface locks this up, this only happends when the current kernel has packet filterings upport enabled in the kernel

Code: c6 03 00 43 88 03 89 c1 e9 02 89 df f3 a5 a8 02 74 02
<0>Kernel panic: fatal exception in interrupt
In interupt handler - not syncing
_________________
fvwm Iron men
Ikaro - http://fluxmod.dk/ikaro.dk/public_html/
taviso - http://dev.gentoo.org/~taviso/
Syzygy - http://desintegr.free.fr/fvwm/
Sparks - http://www.bzsparks.com/fvwm/

suxxer · n00b Joined: 24 Jun 2004 Posts: 1

Seems like I got the same error - machine boots up fine, but as soon as i do ifconfig ath0 up, i get the nifty kernel panic.
>>
kernel panic: fatal exception in interrupt
In interupt handler - not syncing
<<

If I remove the iptables from kernel the problem disapears !
Kernel : 2.6.5.
Madwifi Ver: 0.1_pre20040514

any solutions / comment ? Or is this a bug in iptabels or madwifi ?