From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966107AbcKXPHa (ORCPT ); Thu, 24 Nov 2016 10:07:30 -0500 Received: from mail-wm0-f66.google.com ([74.125.82.66]:33982 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966324AbcKXPH1 (ORCPT ); Thu, 24 Nov 2016 10:07:27 -0500 Date: Thu, 24 Nov 2016 16:07:24 +0100 From: Michal Hocko To: Johannes Berg Cc: LKML Subject: many "changed bandwidth, new config is" messages in the log Message-ID: <20161124150723.GA4776@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.6.0 (2016-04-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I have only now managed to move to 4.9-rc5 (from 4.8) and started seeing quite a lot of following messages " [ 346.612211] wlan0: AP c0:4a:00:f1:48:f2 changed bandwidth, new config is 2472 MHz, width 1 (2472/0 MHz) [ 352.655929] wlan0: AP c0:4a:00:f1:48:f2 changed bandwidth, new config is 2472 MHz, width 2 (2462/0 MHz) " It always seems to be changing width from 1 -> 2 and back $ dmesg | grep "changed bandwidth" | wc -l 42 in 13 minutes of uptime. I have noticed this came in via 30eb1dc2c430 ("mac80211: properly track HT/VHT operation changes"). Is this something to be worried about? -- Michal Hocko SUSE Labs