compat wireless, i3945, tcpdump: Machine freezes

compat wireless, i3945, tcpdump: Machine freezes

[Michael Leun]

Hello,

I downloaded compat-wireless-2008-06-18, built it, loaded cfg80211.ko,
mac80211.ko, iwl3945.ko, associated to an ap, started "tcpdump -i wlan0
-n" and the machine mostly freezed.

Mostly means keyboard does not work, no disk-access, no network but
mouse still works.

This is reproducable, freeze happens instantly after starting tcpdump
(if a ping runs while I start tcpdump I see one Packet in the output of
tcpdump, then machine is frozen).

I've had that with some older versions of compat-wireless also.

I've a Thinkpad Z61m.

-- 
MfG,

Michael Leun

Re: compat wireless, i3945, tcpdump: Machine freezes

[Filippo Zangheri]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Michael Leun ha scritto:
> Hello,
> 
> I downloaded compat-wireless-2008-06-18, built it, loaded cfg80211.ko,
> mac80211.ko, iwl3945.ko, associated to an ap, started "tcpdump -i wlan0
> -n" and the machine mostly freezed.
> 
> Mostly means keyboard does not work, no disk-access, no network but
> mouse still works.
> 
> This is reproducable, freeze happens instantly after starting tcpdump
> (if a ping runs while I start tcpdump I see one Packet in the output of
> tcpdump, then machine is frozen).
> 
> I've had that with some older versions of compat-wireless also.

Same behaviour here.

I add that the freezes happen when the card is associated to the AP.
They happen with tcpdump and with wireshark, both selecting wmaster0
and wlan0 interfaces; but don't happen with kismet.

Furthermore, I have a PPPoE Internet connection and the computer
freezes even when I try to monitor ppp0 interface (when the PPPoE
connection uses the radio link).

Thanks.

- --
Filippo Zangheri

GPG key ID: 0x6C1F2F2F
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Re: compat wireless, i3945, tcpdump: Machine freezes

[linux-wireless]

Hello,

On Wed, 18 Jun 2008 09:42:13 +0200
Michael Leun <linux-wireless@newton.leun.net> wrote:

> I downloaded compat-wireless-2008-06-18, built it, loaded cfg80211.ko,
> mac80211.ko, iwl3945.ko, associated to an ap, started "tcpdump -i
> wlan0 -n" and the machine mostly freezed.
> 
> Mostly means keyboard does not work, no disk-access, no network but
> mouse still works.
[...]

This still happens with compat-wireless-2008-06-25.

-- 
Bye,

Michael Leun

Re: compat wireless, i3945, tcpdump: Machine freezes

[Zhu Yi]

On Wed, 2008-06-25 at 15:43 +0200, linux-wireless@newton.leun.net wrote:
> Hello,
> 
> On Wed, 18 Jun 2008 09:42:13 +0200
> Michael Leun <linux-wireless@newton.leun.net> wrote:
> 
> > I downloaded compat-wireless-2008-06-18, built it, loaded cfg80211.ko,
> > mac80211.ko, iwl3945.ko, associated to an ap, started "tcpdump -i
> > wlan0 -n" and the machine mostly freezed.
> > 
> > Mostly means keyboard does not work, no disk-access, no network but
> > mouse still works.
> [...]
> 
> This still happens with compat-wireless-2008-06-25.

We have a fix patch here. Will submit to linux-wireless after some
tweak.
http://article.gmane.org/gmane.linux.drivers.ipw3945.devel/3166

Thanks,
-yi

Re: compat wireless, i3945, tcpdump: Machine freezes

[linux-wireless]

Hello,

On Thu, 26 Jun 2008 09:02:12 +0800
Zhu Yi <yi.zhu@intel.com> wrote:

> > > I downloaded compat-wireless-2008-06-18, built it, loaded
> > > cfg80211.ko, mac80211.ko, iwl3945.ko, associated to an ap,
> > > started "tcpdump -i wlan0 -n" and the machine mostly freezed.
> > > 
> > > Mostly means keyboard does not work, no disk-access, no network
> > > but mouse still works.
> > This still happens with compat-wireless-2008-06-25.
> 
> We have a fix patch here. Will submit to linux-wireless after some
> tweak.
> http://article.gmane.org/gmane.linux.drivers.ipw3945.devel/3166

Yup, that works - does not freeze anymore. But when switching
promiscuous on it reassociates and there is a network outage of several
seconds.

Thanks!

-- 
Bye,

Michael Leun

Re: compat wireless, i3945, tcpdump: Machine freezes

[Michael Leun]

Hello,

On Sat, 28 Jun 2008 11:21:24 +0200
Filippo Zangheri <filippo.zangheri@yahoo.it> wrote:

> >>>> I downloaded compat-wireless-2008-06-18, built it, loaded
> >>>> cfg80211.ko, mac80211.ko, iwl3945.ko, associated to an ap,
> >>>> started "tcpdump -i wlan0 -n" and the machine mostly freezed.
> >>>>
> >>>> Mostly means keyboard does not work, no disk-access, no network
> >>>> but mouse still works.
> >>> This still happens with compat-wireless-2008-06-25.
> >> We have a fix patch here. Will submit to linux-wireless after some
> >> tweak.
> >> http://article.gmane.org/gmane.linux.drivers.ipw3945.devel/3166
> > 
> > Yup, that works - does not freeze anymore. But when switching
> > promiscuous on it reassociates and there is a network outage of
> > several seconds.
> > 
> > Thanks!
> > 
> 
> Try this patch. It fixed this problem for me.

Yes, this works for me too. Thanks!

-- 
Bye,

Michael Leun