linux-kernel - Re: new: regression iwl3945/mac80211 endless after suspend associate/deassociate loop

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Date:	Tue, 2 Sep 2008 23:50:23 +0300
From:	"Michael S. Tsirkin" <m.s.tsirkin@...il.com>
To:	Jouni Malinen <j@...fi>
Cc:	Dan Williams <dcbw@...hat.com>,
	Johannes Berg <johannes@...solutions.net>,
	Zhu Yi <yi.zhu@...el.com>, "Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>, reinette.chatre@...el.com,
	linux-wireless@...r.kernel.org,
	Jan-Espen Pettersen <sigsegv@...iotube.org>,
	"John W. Linville" <linville@...driver.com>
Subject: Re: new: regression iwl3945/mac80211 endless after suspend
	associate/deassociate loop

On Tue, Sep 02, 2008 at 08:24:09PM +0300, Jouni Malinen wrote:
> On Tue, Sep 02, 2008 at 11:10:38AM -0400, Dan Williams wrote:
> > On Tue, 2008-09-02 at 17:58 +0300, Michael S. Tsirkin wrote:
> > > On Tue, Sep 02, 2008 at 09:30:01AM -0400, Dan Williams wrote:
> > > > On Tue, 2008-09-02 at 16:04 +0300, Michael S. Tsirkin wrote:
> 
> > > > > On Tue, Sep 02, 2008 at 08:10:09AM +0200, Johannes Berg wrote:
> > > > > > "by local choice" means wext requested this, not a kernel bug.
> 
> Well.. The disassociation part not, but what is trickering that
> (association/authentication timeout) may still be ;-).
> 
> 
> > > I put up a (sanitized) -dd output here
> > > http://bugzilla.kernel.org/show_bug.cgi?id=11476
> 
> Would it be possible to get unsanitized version and with -t (i.e.,
> timestamps)? If you don't want to post it publicly, feel free to send
> one directly to me. The one attached to that bug removed quite a bit of
> information that would have been useful in figuring out what happened.

Could you tell me which bits are needed, and don't include
security info? I wouldn't want to post the PSK, etc.

> > Logs seem to indicate a normal failure of the 4 way handshake; are you
> > sure your PSK is correct?  It actually looks like the AP doesn't ever
> > get message #2 from your machine, and just retransmits message #1 of the
> > handshake.  I'm pretty sure that if
> > 8ab65b03b7893da4a49009e7e356e36e27b0c407 had anything to do with it, you
> > wouldn't be getting this far and the AP would have denied association in
> > the first place.
> 
> There are more than one different types of issues shown in the log. I'm
> not sure which one would be the key one here. Anyway, I would agree that
> the commit that removed an empty ext. supp rates IE has nothing to do
> with this.
> 
> 
> As far as suspend is concerned, which distro is used here?

ubuntu gutsy

> Does it
> unload the driver (i.e., remove the netdev) on suspend? If yes, you will
> need to update wpa_supplicant 0.6.4 which handles that disappearing and
> reappearing interface.

Hmm, since it manages to reassociate with -rc4 I would guess not.
In any case killing wpa_supplicant after reboot and restarting it does not
seem to help.

> If this is something else, I would need to get
> more complete debug log from wpa_supplicant..
> 
> -- 
> Jouni Malinen                                            PGP id EFC895FA
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