From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mga09.intel.com ([134.134.136.24]:50650 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752264Ab1ECOpI (ORCPT ); Tue, 3 May 2011 10:45:08 -0400 Subject: Re: iwlagn: crash when unloading the module From: wwguy To: Kalle Valo Cc: "linux-wireless@vger.kernel.org" In-Reply-To: <87iptsgk5y.fsf@purkki.adurom.net> References: <87iptsgk5y.fsf@purkki.adurom.net> Content-Type: text/plain; charset="UTF-8" Date: Tue, 03 May 2011 07:42:07 -0700 Message-ID: <1304433727.5744.107.camel@wwguy-ubuntu> (sfid-20110503_164512_782430_D6ED552C) Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Tue, 2011-05-03 at 03:20 -0700, Kalle Valo wrote: > Hi, > > I noticed today a crash when removing iwlagn module. I can see the > crash everytime on my lenovo x201 (x86 64bit, i5) with this wireless > chip: > > [ 19.484551] iwlagn 0000:02:00.0: Detected Intel(R) Centrino(R) > Ultimate-N 6300 AGN, REV=0x74 > > As I'm travelling I only have two bad quality screenshots and 40 MB > video of the crash :) From the stacktrace it looks that this is iommu > related: > > http://www.adurom.com/~kvalo/tmp/iwlagn/rmmod-iommu-crash/1.png > http://www.adurom.com/~kvalo/tmp/iwlagn/rmmod-iommu-crash/2.png > > This is a new laptop and most likely I haven't removed iwlagn module > before. So this shouldn't be a regression. > it is new to me as well, I never see that happen on my system. Could you share some more information with me? such as laptop model, kernel version, 32 or 64 bits. Also is there any activity while you unload the iwlagn, is it in connect state or not? Thanks Wey