From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754402AbYKMWqS (ORCPT ); Thu, 13 Nov 2008 17:46:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752060AbYKMWqJ (ORCPT ); Thu, 13 Nov 2008 17:46:09 -0500 Received: from waste.org ([66.93.16.53]:40741 "EHLO waste.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751795AbYKMWqH (ORCPT ); Thu, 13 Nov 2008 17:46:07 -0500 Subject: 2.6.28-rc4: inconsistent lock state durin s2ram From: Matt Mackall To: "Rafael J. Wysocki" Cc: Linux Kernel Mailing List Content-Type: text/plain Date: Thu, 13 Nov 2008 16:45:24 -0600 Message-Id: <1226616324.3343.58.camel@calx> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Just noticed this while looking to see if my iwlagn regression was still around (doesn't seem to be): [112342.899610] SMP alternatives: switching to UP code [112343.045933] [112343.045935] ================================= [112343.045937] [ INFO: inconsistent lock state ] [112343.045941] 2.6.28-rc4 #40 [112343.045943] --------------------------------- [112343.045945] inconsistent {in-hardirq-W} -> {hardirq-on-W} usage. [112343.045949] ksoftirqd/0/4 [HC0[0]:SC1[1]:HE1:SE0] takes: [112343.045951] (&rq->lock){++..}, at: [] sched_rt_period_timer+0xb9/0x1c7 [112343.045961] {in-hardirq-W} state was registered at: [112343.045963] [] 0xffffffffffffffff [112343.045969] irq event stamp: 4112884 [112343.045972] hardirqs last enabled at (4112884): [] _spin_unlock_irq+0x24/0x2e [112343.045978] hardirqs last disabled at (4112883): [] _spin_lock_irq+0x15/0x41 [112343.045983] softirqs last enabled at (4112876): [] call_softirq+0x1c/0x28 [112343.045989] softirqs last disabled at (4112881): [] call_softirq+0x1c/0x28 [112343.045994] [112343.045995] other info that might help us debug this: [112343.045997] no locks held by ksoftirqd/0/4. [112343.045999] [112343.046000] stack backtrace: [112343.046003] Pid: 4, comm: ksoftirqd/0 Not tainted 2.6.28-rc4 #40 [112343.046006] Call Trace: [112343.046008] [] print_usage_bug+0x1a3/0x1b2 [112343.046019] [] save_stack_trace+0x22/0x3e [112343.046023] [] mark_lock+0x5a9/0x91f [112343.046028] [] __lock_acquire+0x6c2/0x14b2 [112343.046032] [] lock_acquire+0x8d/0xba [112343.046037] [] sched_rt_period_timer+0xb9/0x1c7 [112343.046041] [] _spin_lock+0x29/0x36 [112343.046045] [] sched_rt_period_timer+0xb9/0x1c7 [112343.046050] [] __next_cpu+0x19/0x26 [112343.046054] [] sched_rt_period_timer+0xb9/0x1c7 [112343.046058] [] _spin_unlock_irq+0x24/0x2e [112343.046063] [] sched_rt_period_timer+0x0/0x1c7 [112343.046068] [] run_hrtimer_pending+0x61/0x10b [112343.046073] [] __do_softirq+0x8e/0x163 [112343.046077] [] call_softirq+0x1c/0x28 [112343.046079] [] do_softirq+0x45/0xa5 [112343.046086] [] ksoftirqd+0x56/0xcc [112343.046090] [] ksoftirqd+0x0/0xcc [112343.046095] [] kthread+0x47/0x73 [112343.046101] [] trace_hardirqs_on_thunk+0x3a/0x3f [112343.046105] [] child_rip+0xa/0x11 [112343.046109] [] restore_args+0x0/0x30 [112343.046114] [] kthreadd+0x187/0x1ac [112343.046118] [] kthread+0x0/0x73 [112343.046122] [] child_rip+0x0/0x11 -- Mathematics is the supreme nostalgia of our time.