Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754133AbZC3RgW (ORCPT ); Mon, 30 Mar 2009 13:36:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751293AbZC3RgN (ORCPT ); Mon, 30 Mar 2009 13:36:13 -0400 Received: from cadalboia.ferrara.linux.it ([195.110.122.101]:58147 "EHLO cadalboia.ferrara.linux.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750998AbZC3RgM (ORCPT ); Mon, 30 Mar 2009 13:36:12 -0400 From: Fabio Coatti Organization: FerraraLUG To: linux-kernel@vger.kernel.org Subject: [BUG] spinlock lockup on CPU#0 Date: Mon, 30 Mar 2009 19:36:08 +0200 User-Agent: KMail/1.11.1 (Linux/2.6.28.8; KDE/4.2.1; i686; ; ) MIME-Version: 1.0 Content-Type: Multipart/Mixed; boundary="Boundary-00=_IMQ0JiM2UnnYUgc" Message-Id: <200903301936.08477.cova@ferrara.linux.it> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 14643 Lines: 225 --Boundary-00=_IMQ0JiM2UnnYUgc Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi all, I've got the following BUG: report on one of our servers running 2.6.28.8; some background: we are seeing several lockups in db (mysql) servers that shows up as a sudden load increase and then, very quickly, the server freezes. It happens in a random way, sometimes after weeks, sometimes very quickly after a system reboot. Trying to discover the problem we installed latest (at the time of test) 2.6.28.X kernel and loaded it with some high disk I/O operations (find, dd, rsync and so on). We have been able to crash a server with these tests; unfortunately we have been able to capture only a remote screen snapshot so I copied by hand (hopefully without typos) the data and this is the result is the following: [] ? default_idle+0x30/0x50 [] ? default_idle+0x2e/0x50 [] ? c1e_idle+0x73/0x120 [] ? atomic_notifier_call_chain+0x11/0x20 [] ? cpu_idle+0x3f/0x70 BUG: spinlock lockup on CPU#0, find/13114, ffff8801363d2c80 Pid: 13114, comm: find Tainted: G D W 2.6.28.8 #5 Call Trace: [] _raw_spin_lock+0x14e/0x180 [] _spin_lock+0x51/0x70 [] ? task_rq_lock+0x54/0xa0 [] task_rq_lock+0x54/0xa0 [] try_to_wake_up+0x91/0x280 [] wake_up_process+0x10/0x20 [] xfsbufd_wakeup+0x53/0x70 [] shrink_slab+0x90/0x180 [] try_to_free_pages+0x256/0x3a0 [] ? isolate_pages_global+0x0/0x280 [] __alloc_pages_internal+0x1b6/0x460 [] alloc_page_vma+0x6d/0x110 [] handle_mm_fault+0x4ab/0x790 [] do_page_fault+0x463/0x870 [] ? trace_hardirqs_off_thunk+0x3a/0x3c [] error_exit+0x0/0xa9 The machine is a dual 2216HE (2 cores) AMD with 4 Gb ram; below you can find the .config file. (from /proc/config.gz) we are seeing similar lockups (at least similar for the results) since several kernel revisions (starting from 2.6.25.X) and on different hardware. Several machines are hit by this, mostly databases (maybe for the specific usage, other machines being apache servers, I don't know). Could someone give us some hints about this issue, or at least some suggestions on how to dig it? Of course we can do any sort of testing and tries. Thanks for any answer. --Boundary-00=_IMQ0JiM2UnnYUgc Content-Type: application/x-gzip; name="config_bug.gz" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="config_bug.gz" H4sIAG3azEkCA4xcbW/buLL+vr9C6F7g7gLnNImTuukC+UCTlM21JLIkZcf9IriO2vo2sXNsp9v+ +zukLJuSSOUskG7EGVJ8mRk+86L8/tvvEXo5bJ+Wh/Vq+fj4K/pabsrd8lA+RE/L72W02m6+rL/+ FT1sN/97iMqH9QF6JOvNy8/oe7nblI/Rj3K3X283f0WDt8O3g9u3t8AQ79ZRutxFg/fR1fVf767/ uvkQDS4vP/z2+2+YZzEbF8ObEdN3v4D32HB/OyyuB9F6H222h2hfHn5zCMMbYD0/nx+QxJOC0Lh6 vHuz3K2+Xfy8HV5U896b36F38VB+qVre1D3HNKOS4UKzlJ7Hq1txylWRC4K0Q8QJx1PFc4lpMUca Twgfe7oaLjqjmVa9xGIkOSIYKX1mM1RCRaFyIbh0CEojPNUSwZs7tAma0SKBmWZ4obmncwzvgBWJ ezyxr0DJmZam+fnhE89oQVLUnTdTKEDgKRLd5lHu2ZnJnLLxRLdOL0WLagkCFzHBZ6qcK5qeOivB MrM9rsxUHGZZiJACJWMumZ6kHiGyb5ogVWCRF4wk5gCZ9pwPSthIwl6CUCVo0WUw4lLM1EIBZ9Ja ST2+hK73HhrIKcoTbd/v64rwBA6SwRko9om2DlhRnYtCUGlfgSRFLQZoTpGaFjy2HI1jqd7BRlRm SDOeFYIrxUadaahcCZoRD7kWjetBq4vgIjfCp4qME9p6bU6Ytmyd91gRVQUXsKGwWFLA6bKMZT6x 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