From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755450AbXLBMey (ORCPT ); Sun, 2 Dec 2007 07:34:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753416AbXLBMef (ORCPT ); Sun, 2 Dec 2007 07:34:35 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:3198 "EHLO spitz.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752313AbXLBMed (ORCPT ); Sun, 2 Dec 2007 07:34:33 -0500 Date: Sat, 1 Dec 2007 08:33:44 +0000 From: Pavel Machek To: Andrew Morton Cc: "Rafael J. Wysocki" , Ingo Molnar , Peter Zijlstra , linux-kernel@vger.kernel.org Subject: Re: suspend-related lockdep warning Message-ID: <20071201083343.GA4446@ucw.cz> References: <20071128024355.5931c6ec.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071128024355.5931c6ec.akpm@linux-foundation.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! > 2.6.24-rc3-mm2 (which will be released if it boots on two more machines and > if I stay awake) will say this during suspend-to-RAM on the Vaio: > > [ 91.876445] Syncing filesystems ... done. > [ 92.382595] Freezing user space processes ... WARNING: at kernel/lockdep.c:2662 check_flags() > [ 92.384000] Pid: 1925, comm: dbus-daemon Not tainted 2.6.24-rc3-mm2 #32 > [ 92.384177] [] show_trace_log_lvl+0x12/0x25 > [ 92.384335] [] show_trace+0xd/0x10 > [ 92.384469] [] dump_stack+0x55/0x5d > [ 92.384605] [] check_flags+0x7f/0x11a > [ 92.384746] [] lock_acquire+0x3a/0x86 > [ 92.384886] [] _spin_lock+0x26/0x53 > [ 92.385023] [] refrigerator+0x13/0xc8 > [ 92.385163] [] get_signal_to_deliver+0x32/0x3fb > [ 92.385326] [] do_notify_resume+0x8c/0x699 > [ 92.385476] [] work_notifysig+0x13/0x1b > [ 92.385620] ======================= > [ 92.385719] irq event stamp: 309 > [ 92.385809] hardirqs last enabled at (309): [] syscall_exit_work+0x11/0x26 > [ 92.386045] hardirqs last disabled at (308): [] syscall_exit+0x14/0x25 > [ 92.386265] softirqs last enabled at (0): [] copy_process+0x374/0x130e > [ 92.386491] softirqs last disabled at (0): [<00000000>] 0x0 > [ 92.392457] (elapsed 0.00 seconds) done. > [ 92.392581] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done. > [ 92.392882] PM: Entering mem sleep > [ 92.392974] Suspending console(s) > > this has been happening for quite some time and might even be happening in > mainline. Is it complaining that we entered refrigerator with irqs disabled? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html