Return-path: Received: from s3.sipsolutions.net ([5.9.151.49]:38293 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751543AbcAEQFw (ORCPT ); Tue, 5 Jan 2016 11:05:52 -0500 Message-ID: <1452009950.12357.46.camel@sipsolutions.net> (sfid-20160105_170555_662907_31696412) Subject: Re: warning at net/mac80211/driver-ops.h:647 ieee80211_sta_wmm_params From: Johannes Berg To: Toralf =?ISO-8859-1?Q?F=F6rster?= , linux-wireless Cc: Emmanuel Grumbach Date: Tue, 05 Jan 2016 17:05:50 +0100 In-Reply-To: <567FCB67.1000101@gmx.de> (sfid-20151227_122919_319415_803E9245) References: <567FCB67.1000101@gmx.de> (sfid-20151227_122919_319415_803E9245) Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Sun, 2015-12-27 at 12:28 +0100, Toralf Förster wrote: > Yesterday I got this warning for the first time while using WLAN in a > train, I'm unsure if this warning is worth to be reported or not : Definitely worth it, thanks! > Dec 26 20:26:48 t44 kernel: [45827.647635] cfg80211:   (5490000 KHz - > 5710000 KHz @ 160000 KHz), (N/A, 2700 mBm), (0 s) > Dec 26 20:26:48 t44 kernel: [45827.647637] cfg80211:   (57000000 KHz > - 66000000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A) > Dec 26 20:26:48 t44 kernel: [45827.700734] ------------[ cut here ] > ------------ > Dec 26 20:26:48 t44 kernel: [45827.700762] WARNING: CPU: 0 PID: 1498 > at net/mac80211/driver-ops.h:647 ieee80211_sta_wmm_params+0x3f7/0x410 > [mac80211]() > Dec 26 20:26:48 t44 kernel: [45827.700764] wlp3s0: invalid > CW_min/CW_max: 127/3 Ugly. I once met a guy who worked on the train AP network, should dig up his contact info ... In the meantime, we should catch this bug at a higher layer and do ... something. But what exactly? Use default WMM parameters like we usually do in cases like this? johannes