Bug#651199: iwlwifi WPA-TKIP crypto failure after group rekeying
- To: "John W. Linville" <linville@tuxdriver.com>
- Cc: Johannes Berg <johannes@sipsolutions.net>, 651199@bugs.debian.org, Ben Hutchings <ben@decadent.org.uk>, Wey-Yi Guy <wey-yi.w.guy@intel.com>, Intel Linux Wireless <ilw@linux.intel.com>, linux-wireless <linux-wireless@vger.kernel.org>, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Andreas Gustafsson <olangu@impressions.se>, Marco d'Itri <md@Linux.IT>, Gabriel Kerneis <kerneis@pps.jussieu.fr>, Shawn Thompson <shawn@projektenterprises.com>, Linus Torvalds <torvalds@linux-foundation.org>
- Subject: Bug#651199: iwlwifi WPA-TKIP crypto failure after group rekeying
- From: Jonathan Nieder <jrnieder@gmail.com>
- Date: Sun, 4 Mar 2012 22:53:35 -0600
- Message-id: <[🔎] 20120305045334.GF30344@burratino>
- Reply-to: Jonathan Nieder <jrnieder@gmail.com>, 651199@bugs.debian.org
- In-reply-to: <1330333354.3483.6.camel@jlt3.sipsolutions.net>
- References: <1330320802.8460.105.camel@deadeye> <1330333354.3483.6.camel@jlt3.sipsolutions.net>
Hi,
Johannes Berg wrote:
> On Mon, 2012-02-27 at 05:33 +0000, Ben Hutchings wrote:
>> To summarise, a WPA-TKIP managed connection stops passing traffic and
>> the kernel log shows the message "WPA: Group rekeying". This apparently
>> doesn't happen if the connection is in heavy use at the time or with
>> module parameter swcrypto=1. WPA2 is not affected either.
>
> I think this is due to my patch "iwlagn: rewrite HW crypto" which
> accidentally broke key *removal* (of all things), which causes issues
> when the first GTK is removed on the second rekeying.
>
> This patch
> [...]h=5dcbf480473f6c3f06ad2426b7517038a2a18911
>
> should fix it. Wey has sent it to John
[...]
> it's also marked for stable.
Shawn Thompson (cc-ed) tested the patch against 3.2.9 and 3.3-rc6 and
found it to work[1]. What can interested people do to help usher this
into mainline?
(To recap, this was a regression introduced between 3.0 and 3.1,
presumably by v3.1-rc1~24^2~10^2^2~37.)
Thanks,
Jonathan
[1] http://bugs.debian.org/651199#147
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