Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755273AbZIJJdq (ORCPT ); Thu, 10 Sep 2009 05:33:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752684AbZIJJdp (ORCPT ); Thu, 10 Sep 2009 05:33:45 -0400 Received: from e23smtp09.au.ibm.com ([202.81.31.142]:33699 "EHLO e23smtp09.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752353AbZIJJdo (ORCPT ); Thu, 10 Sep 2009 05:33:44 -0400 Message-ID: <4AA8C7E2.1080002@linux.vnet.ibm.com> Date: Thu, 10 Sep 2009 15:03:22 +0530 From: Rishikesh User-Agent: Thunderbird 2.0.0.23 (X11/20090825) MIME-Version: 1.0 To: containers@lists.osdl.org, linux-kernel@vger.kernel.org CC: risrajak@in.ibm.com, iranna.ankad@in.ibm.com, svishuku@in.ibm.com, bharanga@in.ibm.com, santwana.samantray@in.ibm.com, mbeeraka@in.ibm.com, serue@us.ibm.com, bharata.rao@in.ibm.com, sharyath@linux.vnet.ibm.com Subject: BUG: soft lockup - CPU#3 stuck for 61s! , while running cpu controller latency testcase on two containers parallaly Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4688 Lines: 111 Hi, I am hitting this soft lock issue while running this scenario on 2.6.31-rc7 kernel on SystemX 32 bit on multiple machines. Opened bug : http://bugzilla.kernel.org/show_bug.cgi?id=14150 Scenario: - While running cpu controller latency testcase from LTP same time on two containers. Steps: 1. Create two container e.g: lxc-execute -n foo1 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash lxc-execute -n foo2 -f /usr/etc/lxc/lxc-macvlan.conf /bin/bash 2. Compile ltp-full-20090731.tgz on host. 3. Either you run cpu_latency testcase alone or run "./runltp -f controllers" at same time on both the containers. 4. After testcase execution completes, you can see this message in dmesg. Expected Result: - Should not reproduce soft lock up issue. - This reproduces 3 times out of 5 tries. hrtimer: interrupt too slow, forcing clock min delta to 5843235 ns hrtimer: interrupt too slow, forcing clock min delta to 5842476 ns Clocksource tsc unstable (delta = 18749057581 ns) BUG: soft lockup - CPU#3 stuck for 61s! [cpuctl_latency_:17174] Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6 p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi usb_storage e1000 scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr serio_raw mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan] Pid: 17174, comm: cpuctl_latency_ Tainted: G W (2.6.31-rc7 #1) IBM eServer BladeCenter HS40 -[883961X]- EIP: 0060:[] EFLAGS: 00000283 CPU: 3 EIP is at find_next_bit+0x9/0x79 EAX: c2c437a0 EBX: f3d433c0 ECX: 00000000 EDX: 00000020 ESI: c2c436bc EDI: 00000000 EBP: f063be6c ESP: f063be64 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 CR0: 80050033 CR2: 008765a4 CR3: 314d7000 CR4: 000006d0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 Call Trace: [] cpumask_next+0x17/0x19 [] tg_shares_up+0x53/0x149 [] ? tg_nop+0x0/0xc [] ? tg_nop+0x0/0xc [] walk_tg_tree+0x63/0x77 [] ? tg_shares_up+0x0/0x149 [] update_shares+0x5d/0x65 [] rebalance_domains+0x114/0x460 [] ? restore_all_notrace+0x0/0x18 [] run_rebalance_domains+0x36/0xa3 [] __do_softirq+0xbc/0x173 [] do_softirq+0x3b/0x5f [] irq_exit+0x3a/0x68 [] smp_apic_timer_interrupt+0x6d/0x7b [] apic_timer_interrupt+0x2f/0x34 BUG: soft lockup - CPU#2 stuck for 61s! [watchdog/2:11] Modules linked in: bridge stp llc bnep sco l2cap bluetooth sunrpc ipv6 p4_clockmod dm_multipath uinput qla2xxx ata_generic pata_acpi usb_storage e1000 scsi_transport_fc joydev scsi_tgt i2c_piix4 pata_serverworks pcspkr serio_raw mptspi mptscsih mptbase scsi_transport_spi radeon ttm drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan] Pid: 11, comm: watchdog/2 Tainted: G W (2.6.31-rc7 #1) IBM eServer BladeCenter HS40 -[883961X]- EIP: 0060:[] EFLAGS: 00000246 CPU: 2 EIP is at tg_shares_up+0xd9/0x149 EAX: 00000000 EBX: f09b3c00 ECX: f0baac00 EDX: 00000100 ESI: 00000002 EDI: 00000400 EBP: f6cb7de0 ESP: f6cb7db8 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 CR0: 8005003b CR2: 08070680 CR3: 009c8000 CR4: 000006d0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 Call Trace: [] ? tg_nop+0x0/0xc [] ? tg_nop+0x0/0xc [] walk_tg_tree+0x63/0x77 [] ? tg_shares_up+0x0/0x149 [] update_shares+0x5d/0x65 [] rebalance_domains+0x114/0x460 [] run_rebalance_domains+0x36/0xa3 [] __do_softirq+0xbc/0x173 [] do_softirq+0x3b/0x5f [] irq_exit+0x3a/0x68 [] smp_apic_timer_interrupt+0x6d/0x7b [] apic_timer_interrupt+0x2f/0x34 [] ? finish_task_switch+0x5d/0xc4 [] schedule+0x74c/0x7b2 [] ? trace_hardirqs_on_thunk+0xc/0x10 [] ? restore_all_notrace+0x0/0x18 [] ? watchdog+0x0/0x79 [] ? watchdog+0x0/0x79 [] watchdog+0x4a/0x79 [] kthread+0x70/0x75 [] ? kthread+0x0/0x75 [] kernel_thread_helper+0x7/0x10 [root@hs40 ltp-full-20090731]# uname -a Linux hs40.in.ibm.com 2.6.31-rc7 #1 SMP Thu Sep 3 10:14:41 IST 2009 i686 i686 i386 GNU/Linux [root@hs40 ltp-full-20090731]# -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/