From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754523Ab2FSSaR (ORCPT ); Tue, 19 Jun 2012 14:30:17 -0400 Received: from acsinet15.oracle.com ([141.146.126.227]:29977 "EHLO acsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753064Ab2FSSaO (ORCPT ); Tue, 19 Jun 2012 14:30:14 -0400 Date: Tue, 19 Jun 2012 14:22:16 -0400 From: Konrad Rzeszutek Wilk To: paulmck@linux.vnet.ibm.com, linux-kernel@vger.kernel.org Subject: WARNING: at /home/konrad/ssd/linux/kernel/rcutree.c:1547 __rcu_process_callbacks+0x42e/0x440() Message-ID: <20120619182216.GA13454@phenom.dumpdata.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I've been getting this when booting a Xen PV guest with 3 CPUs (of which two are online). Any thoughts? Using config file "/test.xm". Started domain latest (id=6) [ 0.000000] console [hvc0] enabled, bootconsole disabled [ 0.000000] Xen: using vcpuop timer interface [ 0.000000] installing Xen timer for CPU 0 [ 0.000000] Detected 3093.036 MHz processor. [ 0.000999] Calibrating delay loop (skipped), value calculated using timer frequency.. 6186.07 BogoMIPS (lpj=3093036) [ 0.000999] pid_max: default: 32768 minimum: 301 [ 0.000999] Security Framework initialized [ 0.000999] SELinux: Initializing. [ 0.000999] SELinux: Starting in permissive mode [ 0.000999] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes) [ 0.000999] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes) [ 0.000999] Mount-cache hash table entries: 256 [ 0.000999] Initializing cgroup subsys cpuacct [ 0.000999] Initializing cgroup subsys freezer [ 0.000999] ENERGY_PERF_BIAS: Set to 'normal', was 'performance' [ 0.000999] ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8) [ 0.000999] CPU: Physical Processor ID: 0 [ 0.000999] CPU: Processor Core ID: 0 [ 0.000999] SMP alternatives: switching to UP code [ 0.026357] cpu 0 spinlock event irq 17 [ 0.026377] Performance Events: unsupported p6 CPU model 42 no PMU driver, software events only. [ 0.026462] NMI watchdog: disabled (cpu0): hardware events not enabled [ 0.026567] installing Xen timer for CPU 1 [ 0.026580] cpu 1 spinlock event irq 24 [ 0.026603] SMP alternatives: switching to SMP code [ 0.049557] NMI watchdog: disabled (cpu1): hardware events not enabled [ 0.049756] installing Xen timer for CPU 2 [ 0.049786] cpu 2 spinlock event irq 31 [ 0.049996] NMI watchdog: disabled (cpu2): hardware events not enabled [ 0.049996] Brought up 3 CPUs [ 0.050313] kworker/u:0 (20) used greatest stack depth: 6000 bytes left [ 0.051028] Grant tables using version 2 layout. [ 0.051065] Grant table initialized [ 0.069993] RTC time: 165:165:165, date: 165/165/65 [ 0.070103] NET: Registered protocol family 16 [ 0.070141] kworker/u:0 (24) used greatest stack depth: 5544 bytes left [ 0.073000] ------------[ cut here ]------------ [ 0.073006] WARNING: at /home/konrad/ssd/linux/kernel/rcutree.c:1547 __rcu_process_callbacks+0x42e/0x440() [ 0.073008] Modules linked in: [ 0.073010] Pid: 12, comm: migration/2 Not tainted 3.5.0-rc2 #2 [ 0.073011] Call Trace: [ 0.073017] [] warn_slowpath_common+0x7a/0xb0 [ 0.073019] [] warn_slowpath_null+0x15/0x20 [ 0.073021] [] __rcu_process_callbacks+0x42e/0x440 [ 0.073023] [] rcu_process_callbacks+0x20/0x40 [ 0.073025] [] __do_softirq+0xa9/0x160 [ 0.073028] [] ? sched_clock_local+0x25/0x90 [ 0.073030] [] ? queue_stop_cpus_work+0x51/0xf0 [ 0.073033] [] call_softirq+0x1c/0x30 [ 0.073034] [] do_softirq+0x65/0xa0 [ 0.073036] [] irq_exit+0xd5/0xf0 [ 0.073039] [] xen_evtchn_do_upcall+0x2f/0x40 [ 0.073040] [] xen_do_hypervisor_callback+0x1e/0x30 [ 0.073042] [] ? queue_stop_cpus_work+0x51/0xf0 [ 0.073044] [] ? hypercall_page+0x22a/0x1000 [ 0.073045] [] ? hypercall_page+0x22a/0x1000 [ 0.073048] [] ? xen_force_evtchn_callback+0xd/0x10 [ 0.073049] [] ? check_events+0x12/0x20 [ 0.073051] [] ? xen_restore_fl_direct_reloc+0x4/0x4 [ 0.073053] [] ? stop_machine_cpu_stop+0xba/0xf0 [ 0.073054] [] ? stop_one_cpu_nowait+0x50/0x50 [ 0.073055] [] ? cpu_stopper_thread+0xf1/0x1c0 [ 0.073058] [] ? __schedule+0x3be/0x760 [ 0.073060] [] ? _raw_spin_unlock_irqrestore+0x19/0x30 [ 0.073061] [] ? res_counter_charge+0x10/0x10 [ 0.073064] [] ? kthread+0x96/0xa0 [ 0.073065] [] ? kernel_thread_helper+0x4/0x10 [ 0.073067] [] ? retint_restore_args+0x5/0x6 [ 0.073069] [] ? gs_change+0x13/0x13 [ 0.073073] ---[ end trace 4eaa2a86a8e2da22 ]--- [ 0.073075] dca service started, version 1.12.1 [ 0.074006] PCI: setting up Xen PCI frontend stub [ 0.074015] PCI: pci_cache_line_size set to 64 bytes [ 0.088093] bio: create slab at 0 [ 0.089051] ACPI: Interpreter disabled. [ 0.089063] xen/balloon: Initialising balloon driver. [ 0.091124] xen-balloon: Initialising balloon driver. [ 0.092068] vgaarb: loaded [ 0.092068] usbcore: registered new interface driver usbfs [ 0.092087] usbcore: registered new interface driver hub [ 0.093027] usbcore: registered new device driver usb [ 0.093039] PCI: System does not support PCI [ 0.093039] PCI: System does not support PCI [ 0.094043] NetLabel: Initializing [ 0.094052] NetLabel: domain hash size = 128 [ 0.094057] NetLabel: protocols = UNLABELED CIPSOv4 [ 0.094077] NetLabel: unlabeled traffic allowed by default [ 0.094099] Switching to clocksource xen [ 0.094160] pnp: PnP ACPI: disabled [ 0.101664] NET: Registered protocol family 2 [ 0.101866] IP route cache hash table entries: 32768 (order: 6, 262144 bytes) [ 0.102859] TCP established hash table entries: 131072 (order: 9, 2097152 bytes) [ 0.103661] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes) [ 0.103849] TCP: Hash tables configured (established 131072 bind 65536) [ 0.103858] TCP: reno registered [ 0.103873] UDP hash table entries: 512 (order: 2, 16384 bytes) [ 0.103891] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes) [ 0.104035] NET: Registered protocol family 1 [ 0.104333] RPC: Registered named UNIX socket transport module. [ 0.104347] RPC: Registered udp transport module. [ 0.104356] RPC: Registered tcp transport module. [ 0.104362] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.104371] PCI: CLS 0 bytes, default 64 [ 0.104511] Trying to unpack rootfs image as initramfs... [ 0.337888] Freeing initrd memory: 273152k freed [ 0.383239] platform rtc_cmos: registered platform RTC device (no PNP device found) [ 0.383418] Machine check injector initialized [ 0.384702] microcode: CPU0 sig=0x206a7, pf=0x2, revision=0x12 [ 0.384730] microcode: CPU1 sig=0x206a7, pf=0x2, revision=0x12 [ 0.384859] microcode: Microcode Update Driver: v2.00 , Peter Oruba [ 0.385589] audit: initializing netlink socket (disabled) [ 0.385612] type=2000 audit(1340130254.678:1): initialized [ 0.403267] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 0.403508] VFS: Disk quotas dquot_6.5.2 [ 0.403552] Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.403720] NFS: Registering the id_resolver key type [ 0.403739] Key type id_resolver registered [ 0.403882] NTFS driver 2.1.30 [Flags: R/W]. [ 0.403981] msgmni has been set to 1986 [ 0.404021] SELinux: Registering netfilter hooks [ 0.404794] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) [ 0.404806] io scheduler noop registered [ 0.404812] io scheduler deadline registered [ 0.404843] io scheduler cfq registered (default) [ 0.404993] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 0.405260] ioatdma: Intel(R) QuickData Technology Driver 4.00 [ 0.451143] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 0.452662] Non-volatile memory driver v1.3 [ 0.452673] Linux agpgart interface v0.103 [ 0.453294] [drm] Initialized drm 1.1.0 20060810 [ 0.457300] brd: module loaded [ 0.459306] loop: module loaded [ 0.459798] Fixed MDIO Bus: probed [ 0.459807] tun: Universal TUN/TAP device driver, 1.6 [ 0.459813] tun: (C) 1999-2004 Max Krasnyansky [ 0.459986] ixgbevf: Intel(R) 10 Gigabit PCI Express Virtual Function Network Driver - version 2.6.0-k [ 0.459998] ixgbevf: Copyright (c) 2009 - 2012 Intel Corporation. [ 0.460777] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.460788] ehci_hcd: block sizes: qh 112 qtd 96 itd 192 sitd 96 [ 0.460891] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 0.460901] ohci_hcd: block sizes: ed 80 td 96 [ 0.461001] uhci_hcd: USB Universal Host Controller Interface driver [ 0.461293] usbcore: registered new interface driver usblp [ 0.461392] usbcore: registered new interface driver libusual [ 0.461734] i8042: PNP: No PS/2 controller found. Probing ports directly. [ 0.462609] i8042: No controller found [ 0.462737] mousedev: PS/2 mouse device common for all mice [ 0.523312] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0 [ 0.523440] rtc_cmos: probe of rtc_cmos failed with error -38 [ 0.523679] EFI Variables Facility v0.08 2004-May-17 [ 0.523734] zram: num_devices not specified. Using default: 1 [ 0.523739] zram: Creating 1 devices ... [ 0.523980] xenoprofile_init: ret 0, events 4, xenoprof_is_primary 0 [ 0.524019] Netfilter messages via NETLINK v0.30. [ 0.524035] nf_conntrack version 0.5.0 (7944 buckets, 31776 max) [ 0.524099] ctnetlink v0.93: registering with nfnetlink. [ 0.524262] ip_tables: (C) 2000-2006 Netfilter Core Team [ 0.524293] TCP: cubic registered [ 0.524298] Initializing XFRM netlink socket [ 0.524346] NET: Registered protocol family 10 [ 0.524486] ip6_tables: (C) 2000-2006 Netfilter Core Team [ 0.524675] sit: IPv6 over IPv4 tunneling driver [ 0.524866] NET: Registered protocol family 17 [ 0.524902] Key type dns_resolver registered [ 0.525076] PM: Hibernation image not present or could not be loaded. [ 0.525094] registered taskstats version 1 [ 0.525121] XENBUS: Device with no driver: device/vkbd/0 [ 0.525127] XENBUS: Device with no driver: device/vfb/0 [ 0.525132] XENBUS: Device with no driver: device/vif/0 [ 0.525191] Magic number: 1:252:3141 [ 0.525898] Freeing unused kernel memory: 716k freed [ 0.526109] Write protecting the kernel read-only data: 8192k [ 0.530939] Freeing unused kernel memory: 172k freed [ 0.531314] Freeing unused kernel memory: 356k freed init started: BusyBox v1.14.3 (2012-06-19 13:33:49 EDT) [ 0.536840] consoletype (1049) used greatest stack depth: 5304 bytes left Mounting directories [ OK ] mount: mount point /proc/bus/usb does not exist [ 0.723241] modprobe (1078) used greatest stack depth: 5064 bytes left mount: mount point /sys/kernel/config does not exist [ 0.731128] core_filesystem (1050) used greatest stack depth: 4984 bytes left [ 0.744953] input: Xen Virtual Keyboard as /devices/virtual/input/input0 [ 0.745268] input: Xen Virtual Pointer as /devices/virtual/input/input1 [ 0.963843] Initialising Xen virtual ethernet driver. [ 1.085463] udevd (1114): /proc/1114/oom_adj is deprecated, please use /proc/1114/oom_score_adj instead. udevd-work[1125]: error opening ATTR{/sys/devices/system/cpu/cpu0/online} for writing: No such file or directory Waiting for devices [ OK ] [ 1.247709] ip (1927) used greatest stack depth: 3768 bytes left Waiting for init.pre_custom [ OK ] Waiting for fb [ OK ] Starting..[/dev/fb0] /dev/fb0: len:0 /dev/fb0: bits/pixel32 (7f69b03c2000): Writting .. [800:600] Done! .. blah blah