From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757406AbYDUPHk (ORCPT ); Mon, 21 Apr 2008 11:07:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752830AbYDUPHb (ORCPT ); Mon, 21 Apr 2008 11:07:31 -0400 Received: from smtp4.pp.htv.fi ([213.243.153.38]:37335 "EHLO smtp4.pp.htv.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751257AbYDUPHa (ORCPT ); Mon, 21 Apr 2008 11:07:30 -0400 Date: Mon, 21 Apr 2008 18:06:56 +0300 From: Adrian Bunk To: ananth@in.ibm.com, anil.s.keshavamurthy@intel.com, davem@davemloft.net, mhiramat@redhat.com Cc: bugme-daemon@bugzilla.kernel.org, jean-marc LACROIX , linux-kernel@vger.kernel.org, Ingo Molnar , Arjan van de Ven Subject: [Bug 10489] Kprobe smoke test lockdep warning Message-ID: <20080421150656.GJ6011@cs181133002.pp.htv.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline User-Agent: Mutt/1.5.17+20080114 (2008-01-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org http://bugzilla.kernel.org/show_bug.cgi?id=10489 Please reply via email (more information from the submitter is in the Bugzilla entry). ReportedBy: jeanmarc.lacroix@free.Fr Earliest failing kernel version: 2.6.25 Distribution: DEbian Etch Hardware Environment: PIII Software Environment: Problem Description: Warning at boot after running all embedded test Steps to reproduce: boot !!! 2.701005] Registering sys device '' [ 2.702320] Registering sys device '' [ 2.703711] Registering sys device '' [ 2.704536] Initializing RT-Tester: OK [ 2.704824] device: 'snapshot': device_add [ 2.705140] PM: Adding info for No Bus:snapshot [ 2.706804] audit: initializing netlink socket (disabled) [ 2.707199] type=2000 audit(1208713807.707:1): initialized [ 2.707509] Kprobe smoke test started [ 2.709300] ------------[ cut here ]------------ [ 2.709420] WARNING: at kernel/lockdep.c:2658 check_flags+0x4d/0x12c() [ 2.709541] Modules linked in: [ 2.709588] Pid: 1, comm: swapper Not tainted 2.6.25.jml.057 #1 [ 2.709588] [] warn_on_slowpath+0x41/0x51 [ 2.709588] [] ? save_stack_trace+0x1d/0x3b [ 2.709588] [] ? save_trace+0x37/0x89 [ 2.709588] [] ? kernel_map_pages+0x103/0x11c [ 2.709588] [] ? native_sched_clock+0xca/0xea [ 2.709588] [] ? mark_held_locks+0x41/0x5c [ 2.709588] [] ? kprobe_exceptions_notify+0x322/0x3af [ 2.709588] [] ? trace_hardirqs_on+0xf1/0x119 [ 2.709588] [] ? kprobe_exceptions_notify+0x355/0x3af [ 2.709588] [] check_flags+0x4d/0x12c [ 2.709588] [] lock_release+0x58/0x195 [ 2.709588] [] ? __atomic_notifier_call_chain+0x0/0x80 [ 2.709588] [] __atomic_notifier_call_chain+0x5a/0x80 [ 2.709588] [] atomic_notifier_call_chain+0xc/0xe [ 2.709588] [] notify_die+0x2d/0x2f [ 2.709588] [] do_debug+0x67/0xfe [ 2.709588] [] debug_stack_correct+0x27/0x30 [ 2.709588] [] ? kprobe_target+0x1/0x34 [ 2.709588] [] ? init_test_probes+0x50/0x186 [ 2.709588] [] init_kprobes+0x85/0x8c [ 2.709588] [] kernel_init+0x13d/0x298 [ 2.709588] [] ? kernel_init+0x0/0x298 [ 2.709588] [] ? kernel_init+0x0/0x298 [ 2.709588] [] kernel_thread_helper+0x7/0x10 [ 2.709588] ======================= [ 2.709588] ---[ end trace 778e504de7e3b1e3 ]--- [ 2.709588] possible reason: unannotated irqs-off. [ 2.709588] irq event stamp: 370065 [ 2.709588] hardirqs last enabled at (370065): [] kprobe_exceptions_notify+0x322/0x3af [ 2.709588] hardirqs last disabled at (370064): [] do_int3+0x1d/0x7d [ 2.709588] softirqs last enabled at (370050): [] __do_softirq+0xfa/0x100 [ 2.709588] softirqs last disabled at (370045): [] do_softirq+0x74/0xd9 [ 2.714751] Kprobe smoke test passed successfully [ 2.716150] Total HugeTLB memory allocated, 0 [ 2.717288] VFS: Disk quotas dquot_6.5.1 [ 2.717689] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 2.719630] device class 'bsg': registering [ 2.720568] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) [ 2.720619] io scheduler noop registered [ 2.720732] io scheduler anticipatory registered [ 2.720848] io scheduler deadline registered [ 2.721089] io scheduler cfq registered (default) [ 2.721354] pci 0000:00:01.0: Boot video device cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed