From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.17.20]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 70E1E3B29F for ; Sun, 18 Sep 2016 16:50:45 -0400 (EDT) Received: from [80.135.70.72] by 3capp-gmx-bs05.server.lan (via HTTP); Sun, 18 Sep 2016 22:50:43 +0200 MIME-Version: 1.0 Message-ID: From: "Sebastian Moeller" To: "Loganaden Velvindron" Cc: "Dave Taht" , make-wifi-fast@lists.bufferbloat.net Content-Type: text/html; charset=UTF-8 Date: Sun, 18 Sep 2016 22:50:43 +0200 Importance: normal Sensitivity: Normal In-Reply-To: References: <87shsyjupm.fsf@toke.dk> , X-UI-Message-Type: mail X-Priority: 3 X-Provags-ID: V03:K0:T0hmIFwnU/xh3ACbS0B66wdDVPAMIUtoXpJC2s8v8cF lLlwHXuNbOiWgf4SV5OzBB6Ikc/RXDJQhTcQACpfgEqrU4Kv4L ikNaZagFNPk4vcRzIEWBoaFrxadNR1+k3l7sIQ8LKO4eCASQM6 LjkzIImYSeBNQYIFWH3MqW7Q6HsZcqrnbUsDq14O6VTD8MXR5q PALpzvvgOP7pImtI5zi9I1Bhib/iJ5WL/w6+/UV4j33YeYuux8 5+BJuQq6cAGPOR6IUqM7fwR7N/Uoy0oFJBokeeMhFSO9PudVhm XiFW70= X-UI-Out-Filterresults: notjunk:1;V01:K0:ynfarG5dRyk=:tF4XSyVOsM/tMtexk0Cm94 Gdgav8M0F4EZneMTexg4V10V0DA+08MINzUzkPscdj9lJoG1VZGqCfoDjNIn/P85uDvJQadfG vOOAVihgKXrXjWxd6An71rO09ipx9359knhnBYtX2Gz7TQNDz0hRIjBWifEADCAM0mBAQ/3Db Hx1KcubjP1nDfpm217wl5NLLo775YVFUlrNKWofolYzgdgE8LiH0q/E/sU8AUuQssAbQivW5d AuZ2GXGYtlOYv+c80Lhu/Zb4jr+Y6sEG5as4inRti4ZO2VDYSeGxCAbsmWvrpKpLIdoYsVy7d VzsxCtv2q4erOIKzE7JtgHFCqgTUspKkTurhjMuW3FqPuc9bnEUBWOXXClJQ1dOZnKHnO542O qArwRWwZVUWlswJJqR8B9SBOyumc4/FNzCOHDz0Bl5R6BSRVsoVoOnt+mArPTMqUCydvWhBj+ YQcpw2KTLg== Subject: Re: [Make-wifi-fast] crypto-fq bug postmortem is up X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Sep 2016 20:50:45 -0000
 
Hi Loganaden,
 
this sounds somewhat familiar to me (see https://bugs.lede-project.org/index.php?do=details&task_id=176 ). At least the symptoms are similar and so is the temporary remedy (calling wifi on the CLI). Are you using LEDE firmwares as well? In my case it seems bad radio conditions help expose the issue somewhat easier... My current idea is that r1482 (commit    372d0fea29e60b02154fd7176ba32e7742f6640e, ' ath9k: add a bunch of powersave handling fixes') somehow introduced a new or exposed an old and hidden bug for the atheros radios, r1483 (commit    a894a535ff7e6c37bd853e951663130482bc0ff2, 'mac80211: add fixes for dealing with unexpected BlockAck frames') might either have introduced an easier way to trigger the offensive conditions, but that is conjecture...
 
Best Regards
        Sebastian
 
 
Gesendet: Sonntag, 18. September 2016 um 16:24 Uhr
Von: "Loganaden Velvindron" <loganaden@gmail.com>
An: "Dave Taht" <dave.taht@gmail.com>
Cc: make-wifi-fast@lists.bufferbloat.net
Betreff: Re: [Make-wifi-fast] crypto-fq bug postmortem is up
On the tp-link archer c7 v2, and toke's firmware, I hit a non reproducible bug:

After running flent a couple of times, the wifi stops working. It's no
longer reachable.

I was using whatsapp a few minutes ago, when the same thing happened.

I can narrow it down to the wifi (bgn), because when I disable the
wifi interface via luci, and re-enable it, wifi works properly.
Unfortunately, there are no relevant messages in the kernel or system
log. I'm using wpa-psk (ccmp) for encryption.
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