From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756549AbYJNG4c (ORCPT ); Tue, 14 Oct 2008 02:56:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751471AbYJNG4X (ORCPT ); Tue, 14 Oct 2008 02:56:23 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:44855 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752557AbYJNG4W (ORCPT ); Tue, 14 Oct 2008 02:56:22 -0400 Date: Tue, 14 Oct 2008 08:55:41 +0200 From: Ingo Molnar To: Alan Cox Cc: "Rafael J. Wysocki" , Dmitry Torokhov , Andrew Morton , Linus Torvalds , LKML Subject: Re: [2.6.27-git-a447c093244] BUG: spinlock bad magic on CPU#0, setserial/3527 Message-ID: <20081014065541.GA11047@elte.hu> References: <200810140005.39852.rjw@sisk.pl> <20081013235013.17e3106b@lxorguk.ukuu.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081013235013.17e3106b@lxorguk.ukuu.org.uk> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00,DNS_FROM_SECURITYSAGE autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 0.0 DNS_FROM_SECURITYSAGE RBL: Envelope sender in blackholes.securitysage.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Alan Cox wrote: > On Tue, 14 Oct 2008 00:05:39 +0200 > "Rafael J. Wysocki" wrote: > > > Hi, > > > > The Linus' tree from today on Asus L5D: > > > > BUG: spinlock bad magic on CPU#0, setserial/3527 > > lock: ffffffff80dae020, .magic: 00000000, .owner: /-1, .owner_cpu: 0 > > Pid: 3527, comm: setserial Not tainted 2.6.27-git #57 > > Yep looking at that at the moment. Its a fallout from dropping the > NR_IRQ removal changes from the serial tree just before merging I > think. Was done to make life simpler for Ingo's code push but appears > to have slightly backfired. i too have triggered it: [ 31.099528] BUG: spinlock bad magic on CPU#1, agetty/2608 [ 31.101013] lock: ffffffff8182b020, .magic: 00000000, .owner: agetty/2608, .owner_cpu: 1 [ 31.101013] Pid: 2608, comm: agetty Not tainted 2.6.27-tip-03409-g064a754-dirty #42476 [ 31.101013] Call Trace: [ 31.101013] [] spin_bug+0xa2/0xaa [ 31.101013] [] _raw_spin_unlock+0x21/0x8a [ 31.101013] [] _spin_unlock_irq+0x2b/0x36 [ 31.101013] [] serial8250_startup+0x3f2/0x5a3 [ 31.101013] [] uart_startup+0xa0/0x14b [ 31.101013] [] uart_open+0x1a8/0x3f7 [ 31.101013] [] ? _spin_unlock+0x2b/0x2f [ 31.101013] [] tty_open+0x2db/0x41c [ 31.101013] [] chrdev_open+0x130/0x151 [ 31.101013] [] ? _spin_unlock+0x2b/0x2f [ 31.101013] [] ? chrdev_open+0x0/0x151 [ 31.101013] [] __dentry_open+0x178/0x274 [ 31.101013] [] nameidata_to_filp+0x33/0x44 [ 31.101013] [] do_filp_open+0x3be/0x753 [ 31.101013] [] ? alloc_fd+0x101/0x110 [ 31.101013] [] ? trace_hardirqs_off+0x1e/0x20 [ 31.101013] [] ? _spin_unlock+0x2b/0x2f [ 31.101013] [] ? alloc_fd+0x101/0x110 [ 31.101013] [] do_sys_open+0x58/0xdf [ 31.101013] [] sys_open+0x20/0x22 [ 31.101013] [] system_call_fastpath+0x16/0x1b [ 31.405014] eth1: no IPv6 routers present [ 32.947611] ACPI: PCI Interrupt Link [APC3] enabled at IRQ 18 can test any patch for you if it's not easy to reproduce there. Ingo