From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761563AbYDSNWw (ORCPT ); Sat, 19 Apr 2008 09:22:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755417AbYDSNWn (ORCPT ); Sat, 19 Apr 2008 09:22:43 -0400 Received: from accolon.hansenpartnership.com ([76.243.235.52]:49564 "EHLO accolon.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753823AbYDSNWl (ORCPT ); Sat, 19 Apr 2008 09:22:41 -0400 Subject: Re: [bug] SCSI/SLUB - latest -git: WARNING: at mm/slub.c:2443 kmem_cache_destroy, scsi_put_host_cmd_pool() From: James Bottomley To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Pekka Enberg , Christoph Lameter , linux-scsi In-Reply-To: <20080419085758.GA18612@elte.hu> References: <20080419085758.GA18612@elte.hu> Content-Type: text/plain Date: Sat, 19 Apr 2008 08:22:37 -0500 Message-Id: <1208611357.3280.5.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 (2.12.3-4.fc8) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2008-04-19 at 10:57 +0200, Ingo Molnar wrote: > x86.git allyesconfig bootup test produced the following warning in > slub.c (and a stream of similar warnings later on): > > [ 47.295141] ------------[ cut here ]------------ > [ 47.298969] WARNING: at mm/slub.c:2443 kmem_cache_destroy+0xf8/0x102() > [ 47.302967] Modules linked in: > [ 47.307205] Pid: 1, comm: swapper Not tainted 2.6.25-sched-devel.git-x86-latest.git #24 > [ 47.310970] [] warn_on_slowpath+0x46/0x56 > [ 47.317464] [] ? get_pageblock_flags_group+0x56/0x74 > [ 47.322969] [] ? list_add+0xa/0xf > [ 47.328814] [] ? _spin_unlock+0x22/0x25 > [ 47.333327] [] ? time_hardirqs_off+0xe/0x1f > [ 47.338972] [] ? trace_hardirqs_off_caller+0x15/0xab > [ 47.342970] [] ? trace_hardirqs_off+0xb/0xd > [ 47.350971] [] ? free_hot_cold_page+0x11d/0x139 > [ 47.354970] [] ? time_hardirqs_on+0xe/0x1f > [ 47.361595] [] ? trace_hardirqs_on_caller+0x16/0x13c > [ 47.366973] [] ? trace_hardirqs_on+0xb/0xd > [ 47.370972] [] kmem_cache_destroy+0xf8/0x102 > [ 47.377727] [] scsi_put_host_cmd_pool+0x42/0x58 > [ 47.382973] [] scsi_destroy_command_freelist+0x54/0x5c > [ 47.386972] [] scsi_host_dev_release+0x79/0xa9 > [ 47.394973] [] device_release+0x3e/0x54 > [ 47.398974] [] kobject_release+0x45/0x55 > [ 47.405383] [] ? kobject_release+0x0/0x55 > [ 47.409513] [] kref_put+0x3e/0x49 > [ 47.414975] [] kobject_put+0x19/0x1b > [ 47.418975] [] put_device+0x16/0x18 > [ 47.422975] [] scsi_host_put+0x12/0x14 > [ 47.426975] [] scsi_unregister+0x1d/0x20 > [ 47.433383] [] aha1542_detect+0x7db/0x7f5 > [ 47.438977] [] ? trace_hardirqs_on+0xb/0xd > [ 47.442976] [] ? init_this_scsi_driver+0xb/0xd0 > [ 47.450666] [] init_this_scsi_driver+0x5e/0xd0 > [ 47.454978] [] kernel_init+0x152/0x2b0 > [ 47.458978] [] ? kernel_init+0x0/0x2b0 > [ 47.465249] [] ? kernel_init+0x0/0x2b0 > [ 47.469258] [] kernel_thread_helper+0x7/0x10 > [ 47.474978] ======================= > [ 47.478980] ---[ end trace 778e504de7e3b1e3 ]--- > [ 47.483297] ------------[ cut here ]------------ > > config and bootlog at: > > http://redhat.com/~mingo/misc/config-Sat_Apr_19_10_28_28_CEST_2008.bad > http://redhat.com/~mingo/misc/log-Sat_Apr_19_10_28_28_CEST_2008.bad > > [a few .config options were turned off: just accept all the defaults > after 'make oldconfig'] The WARN_ON is caused by kmem_cache_destroy() with apparently outstanding objects, isn't it? The most significant piece of the log seems to be before with all those isa SCSI drivers ... I assume you don't actually have any of the hardware, you're just randomly inserting the modules? James