From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755287AbZHDOOc (ORCPT ); Tue, 4 Aug 2009 10:14:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753617AbZHDOOb (ORCPT ); Tue, 4 Aug 2009 10:14:31 -0400 Received: from mx2.redhat.com ([66.187.237.31]:40388 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753372AbZHDOOa (ORCPT ); Tue, 4 Aug 2009 10:14:30 -0400 Date: Tue, 4 Aug 2009 10:14:25 -0400 From: Dave Jones To: Linux Kernel Cc: neilb@suse.de Subject: 2.6.31rc5 RAID10 lockdep report Message-ID: <20090804141425.GA2831@redhat.com> Mail-Followup-To: Dave Jones , Linux Kernel , neilb@suse.de MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Report from a user we received today .. (https://bugzilla.redhat.com/show_bug.cgi?id=515471) Dave ================================= [ INFO: inconsistent lock state ] 2.6.31-0.118.rc5.fc12.x86_64 #1 --------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. md126_resync/475 [HC0[0]:SC1[1]:HE1:SE0] takes: (sysfs_open_dirent_lock){+.?...}, at: [] sysfs_notify_dirent+0x2c/0x75 {SOFTIRQ-ON-W} state was registered at: [] __lock_acquire+0x2e9/0xc0e [] lock_acquire+0xee/0x12e [] _spin_lock+0x45/0x8e [] sysfs_open_file+0x18f/0x295 [] __dentry_open+0x197/0x316 [] nameidata_to_filp+0x51/0x76 [] do_filp_open+0x516/0x9d8 [] do_sys_open+0x71/0x131 [] sys_open+0x33/0x49 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff irq event stamp: 12243532 hardirqs last enabled at (12243532): [] _spin_unlock_irq+0x3f/0x61 hardirqs last disabled at (12243531): [] _spin_lock_irq+0x2e/0x9a softirqs last enabled at (12243378): [] __do_softirq+0x1c4/0x1f0 softirqs last disabled at (12243471): [] call_softirq+0x1c/0x30 other info that might help us debug this: 1 lock held by md126_resync/475: #0: (&new->safemode_timer){+.-...}, at: [] run_timer_softirq+0x198/0x2a3 stack backtrace: Pid: 475, comm: md126_resync Not tainted 2.6.31-0.118.rc5.fc12.x86_64 #1 Call Trace: [] valid_state+0x187/0x1ae [] ? check_usage_forwards+0x0/0x79 [] mark_lock+0x129/0x253 [] __lock_acquire+0x275/0xc0e [] ? save_trace+0x4e/0xba [] lock_acquire+0xee/0x12e [] ? sysfs_notify_dirent+0x2c/0x75 [] ? sysfs_notify_dirent+0x2c/0x75 [] ? md_safemode_timeout+0x0/0x70 [] _spin_lock+0x45/0x8e [] ? sysfs_notify_dirent+0x2c/0x75 [] sysfs_notify_dirent+0x2c/0x75 [] md_safemode_timeout+0x49/0x70 [] run_timer_softirq+0x1fc/0x2a3 [] ? run_timer_softirq+0x198/0x2a3 [] __do_softirq+0xf6/0x1f0 [] call_softirq+0x1c/0x30 [] do_softirq+0x5f/0xd7 [] irq_exit+0x66/0xbc [] ? trace_hardirqs_off_thunk+0x3a/0x3c [] do_IRQ+0xb8/0xe5 [] ret_from_intr+0x0/0x16 [] ? _spin_unlock_irqrestore+0x5f/0x7f [] ? scsi_dispatch_cmd+0x1d4/0x25f [] ? scsi_request_fn+0x483/0x4c4 [] ? __blk_run_queue+0x54/0x9a [] ? cfq_insert_request+0x26c/0x3d4 [] ? elv_insert+0x120/0x1e0 [] ? __elv_add_request+0xa7/0xc2 [] ? __make_request+0x35e/0x3f1 [] ? generic_make_request+0x29e/0x2fc [] ? sync_request+0x833/0x8b2 [raid10] [] ? md_do_sync+0x756/0xb4f [] ? native_sched_clock+0x2d/0x62 [] ? md_thread+0x100/0x132 [] ? md_thread+0x0/0x132 [] ? kthread+0xa5/0xad [] ? child_rip+0xa/0x20 [] ? restore_args+0x0/0x30 [] ? kthread+0x0/0xad [] ? child_rip+0x0/0x20