From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753812Ab3KKNXg (ORCPT ); Mon, 11 Nov 2013 08:23:36 -0500 Received: from mga11.intel.com ([192.55.52.93]:46534 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753345Ab3KKNX2 convert rfc822-to-8bit (ORCPT ); Mon, 11 Nov 2013 08:23:28 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.93,677,1378882800"; d="scan'208";a="431308206" From: "Berg, Johannes" To: "Wu, Fengguang" CC: Thomas Pedersen , Jouni Malinen , "John W. Linville" , LKML , "linux-wireless@vger.kernel.org" , "Holtmann, Marcel" Subject: RE: [init_mac80211_hwsim] BUG: unable to handle kernel paging request at cd1aa02c Thread-Topic: [init_mac80211_hwsim] BUG: unable to handle kernel paging request at cd1aa02c Thread-Index: AQHO27RexWzc/guFJkqY0KS9E3OYFZogCqmg Date: Mon, 11 Nov 2013 13:23:25 +0000 Message-ID: <1DC40B07CD6EC041A66726C271A73AE61AAEC7D8@IRSMSX102.ger.corp.intel.com> References: <20131107122443.GA11161@localhost> In-Reply-To: <20131107122443.GA11161@localhost> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [163.33.239.180] Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > [ 5.543416] ieee80211 phy0: Failed to select rate control algorithm > [ 5.543993] ieee80211 phy0: Failed to initialize rate control algorithm > [ 5.556937] mac80211_hwsim: ieee80211_register_hw failed (-2) > [ 5.557669] BUG: unable to handle kernel paging request at cd1aa02c > [ 5.558381] IP: [] kobject_get+0x2b/0xb0 > [ 5.558922] *pdpt = 0000000002c20001 *pde = 000000000fbfc067 *pte = > 800000000d1aa060 Yeah this is a known bug in hwsim - if registration fails (here apparently because you have no rate scaling) then it crashes - the error path is broken. Luckily, this never actually happens in practice. I'm supposed to get some patches from Marcel which I think will (have to) fix this. johannes -- Intel GmbH Dornacher Strasse 1 85622 Feldkirchen/Muenchen, Deutschland Sitz der Gesellschaft: Feldkirchen bei Muenchen Geschaeftsfuehrer: Christian Lamprechter, Hannes Schwaderer, Douglas Lusk Registergericht: Muenchen HRB 47456 Ust.-IdNr./VAT Registration No.: DE129385895 Citibank Frankfurt a.M. (BLZ 502 109 00) 600119052