From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752681AbcKGL1w (ORCPT ); Mon, 7 Nov 2016 06:27:52 -0500 Received: from mail-dm3nam03on0064.outbound.protection.outlook.com ([104.47.41.64]:1410 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751991AbcKGL1s (ORCPT ); Mon, 7 Nov 2016 06:27:48 -0500 X-Greylist: delayed 5522 seconds by postgrey-1.27 at vger.kernel.org; Mon, 07 Nov 2016 06:27:48 EST Authentication-Results: spf=none (sender IP is 208.19.100.21) smtp.mailfrom=microsemi.com; davemloft.net; dkim=none (message not signed) header.d=none;davemloft.net; dmarc=none action=none header.from=microsemi.com; X-IncomingTopHeaderMarker: OriginalChecksum:;UpperCasedChecksum:;SizeAsReceived:1142;Count:15 Date: Mon, 7 Nov 2016 10:55:32 +0100 From: "Allan W. Nielsen" To: Andrew Lunn CC: kernel test robot , Raju Lakkaraju , "David S. Miller" , LKML , , Subject: Re: [lkp] [net] af1fee9821: BUG:spinlock_trylock_failure_on_UP_on_CPU Message-ID: <20161107095532.GD16599@microsemi.com> References: <20161107022628.GA21529@yexl-desktop> <20161107093148.GA27001@lunn.ch> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline In-Reply-To: <20161107093148.GA27001@lunn.ch> User-Agent: Mutt/1.5.24 (2015-08-30) X-IncomingHeaderCount: 15 X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:208.19.100.21;IPV:NLI;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10009020)(6009001)(7916002)(2980300002)(428002)(199003)(69234005)(24454002)(189002)(76506005)(105586002)(54356999)(77096005)(15975445007)(101416001)(68736007)(6916009)(5660300001)(81156014)(2950100002)(76176999)(50986999)(47776003)(4326007)(2906002)(81166006)(50466002)(97736004)(586003)(36756003)(11100500001)(92566002)(1076002)(8676002)(4001350100001)(106466001)(110136003)(305945005)(626004)(86362001)(83506001)(7846002)(69596002)(87936001)(189998001)(356003)(33656002)(57986006)(19580395003)(8936002)(23756003)(18370500001);DIR:OUT;SFP:1101;SCL:1;SRVR:SN1PR0201MB1870;H:avsrvexchhts1.microsemi.net;FPR:;SPF:None;PTR:InfoDomainNonexistent;A:1;MX:1;LANG:en; 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I asked Raju to see if he can re-produce, and then try again with the microsemi_phy disabled and see it that makes a difference. If Raju gets stuck on this, then I will try to help our during the after-noon. /Allan On 07/11/16 10:31, Andrew Lunn wrote: > EXTERNAL EMAIL > > > On Mon, Nov 07, 2016 at 10:26:28AM +0800, kernel test robot wrote: > > > > FYI, we noticed the following commit: > > > > https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master > > commit af1fee98219992ba2c12441a447719652ed7e983 ("net: phy: Add support for Microsemi VSC 8530/40 Fast Ethernet PHY") > > Humm, interesting. I've no idea how this patch can trigger such a > warning. The USB gadget does not have an Ethernet PHY, let alone a > Microsemi 8530/40 Fast Ethernet PHY this patch adds. > > However, it seems nicely documented how to reproduce this. Allan, can > you setup such a system? Reproduce it, then revert the change and see > if it still happens. > > Andrew