From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750854AbWGYTB3 (ORCPT ); Tue, 25 Jul 2006 15:01:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751497AbWGYTB2 (ORCPT ); Tue, 25 Jul 2006 15:01:28 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:26255 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1750854AbWGYTB1 (ORCPT ); Tue, 25 Jul 2006 15:01:27 -0400 Date: Tue, 25 Jul 2006 20:54:49 +0200 From: Ingo Molnar To: Linus Torvalds Cc: Chuck Ebbert <76306.1226@compuserve.com>, Arjan van de Ven , Ashok Raj , linux-kernel , Dave Jones , Andrew Morton Subject: Re: remove cpu hotplug bustification in cpufreq. Message-ID: <20060725185449.GA8074@elte.hu> References: <200607242023_MC3-1-C5FE-CADB@compuserve.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: -1.1 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.1 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_99 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts 4.0 BAYES_99 BODY: Bayesian spam probability is 99 to 100% [score: 1.0000] -1.8 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Linus Torvalds wrote: > The current -git tree will complain about some of the more obvious > problems. If you see a "Lukewarm IQ" message, it's a sign of somebody > re-taking a cpu lock that is already held. testing on my latest-rawhide laptop (kernel-2.6.17-1.2445.fc6 and later rpms have this change) seems to have pushed the problem over to another lock: S06cpuspeed/1580 is trying to acquire lock: (&policy->lock){--..}, at: [] mutex_lock+0x21/0x24 but task is already holding lock: (cpu_bitmask_lock){--..}, at: [] mutex_lock+0x21/0x24 which lock already depends on the new lock. and we also get the: Lukewarm IQ detected in hotplug locking message :-| Find the full bootlog below. And i dont understand the cpufreq code well enough to fix this. In fact, does anyone understand it? :-/ Ingo ------------> Linux version 2.6.17-1.2445.fc6 (brewbuilder@hs20-bc2-2.build.redhat.com) (gcc version 4.1.1 20060718 (Red Hat 4.1.1-9)) #1 SMP Mon Jul 24 22:43:31 EDT 2006 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009f800 (usable) BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) BIOS-e820: 00000000000ce000 - 00000000000d0000 (reserved) BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000003dee0000 (usable) BIOS-e820: 000000003dee0000 - 000000003deec000 (ACPI data) BIOS-e820: 000000003deec000 - 000000003df00000 (ACPI NVS) BIOS-e820: 000000003df00000 - 0000000040000000 (reserved) BIOS-e820: 00000000ff800000 - 00000000ffc00000 (reserved) BIOS-e820: 00000000fffffc00 - 0000000100000000 (reserved) 94MB HIGHMEM available. 895MB LOWMEM available. Using x86 segment limits to approximate NX protection On node 0 totalpages: 253664 DMA zone: 4096 pages, LIFO batch:0 Normal zone: 225279 pages, LIFO batch:31 HighMem zone: 24289 pages, LIFO batch:3 DMI present. Using APIC driver default ACPI: RSDP (v000 HP ) @ 0x000f6560 ACPI: RSDT (v001 HP 3084 0x06040000 LTP 0x00000000) @ 0x3dee66d9 ACPI: FADT (v001 HP 3084 0x06040000 PTL 0x00000050) @ 0x3deebed2 ACPI: BOOT (v001 HP 3084 0x06040000 LTP 0x00000001) @ 0x3deebfd8 ACPI: SSDT (v001 HP 3084 0x00000001 INTL 0x20030224) @ 0x3dee6b10 ACPI: SSDT (v001 HP 3084 0x00002000 INTL 0x20030224) @ 0x3dee670d ACPI: DSDT (v001 HP 3084 0x06040000 MSFT 0x0100000e) @ 0x00000000 ACPI: PM-Timer IO Port: 0x1008 Allocating PCI resources starting at 50000000 (gap: 40000000:bf800000) Detected 1596.087 MHz processor. Built 1 zonelists. Total pages: 253664 Kernel command line: ro root=/dev/VolGroup00/LogVol00 quiet selinux=0 3 Local APIC disabled by BIOS -- you can enable it with "lapic" mapped APIC to ffffd000 (017d3000) Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Initializing CPU#0 CPU 0 irqstacks, hard=c0802000 soft=c07e2000 PID hash table entries: 4096 (order: 12, 16384 bytes) Console: colour VGA+ 80x25 Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar ... MAX_LOCKDEP_SUBCLASSES: 8 ... MAX_LOCK_DEPTH: 30 ... MAX_LOCKDEP_KEYS: 2048 ... CLASSHASH_SIZE: 1024 ... MAX_LOCKDEP_ENTRIES: 8192 ... MAX_LOCKDEP_CHAINS: 8192 ... CHAINHASH_SIZE: 4096 memory used by lock dependency info: 696 kB per task-struct memory footprint: 1200 bytes Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 997324k/1014656k available (2092k kernel code, 16724k reserved, 1113k data, 240k init, 97156k highmem) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay using timer specific routine.. 3194.92 BogoMIPS (lpj=6389854) Security Framework v1.0.0 initialized SELinux: Disabled at boot. Capability LSM initialized Mount-cache hash table entries: 512 CPU: After generic identify, caps: afe9f9bf 00000000 00000000 00000000 00000180 00000000 00000000 CPU: After vendor identify, caps: afe9f9bf 00000000 00000000 00000000 00000180 00000000 00000000 CPU: L1 I cache: 32K, L1 D cache: 32K CPU: L2 cache: 2048K CPU: After all inits, caps: afe9f1bf 00000000 00000000 00000040 00000180 00000000 00000000 Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. Checking 'hlt' instruction... OK. SMP alternatives: switching to UP code Freeing SMP alternatives: 16k freed ACPI: Core revision 20060707 ACPI: setting ELCR to 0200 (from 0c20) CPU0: Intel(R) Pentium(R) M processor 1.60GHz stepping 06 SMP motherboard not detected. Local APIC not detected. Using dummy APIC emulation. Brought up 1 CPUs sizeof(vma)=84 bytes sizeof(page)=32 bytes sizeof(inode)=568 bytes sizeof(dentry)=160 bytes sizeof(ext3inode)=804 bytes sizeof(buffer_head)=52 bytes sizeof(skbuff)=172 bytes checking if image is initramfs... it is Freeing initrd memory: 1970k freed PM: Adding info for No Bus:platform NET: Registered protocol family 16 ACPI: bus type pci registered PCI: PCI BIOS revision 2.10 entry at 0xfd9a2, last bus=2 Setting up standard PCI resources ACPI: Interpreter enabled ACPI: Using PIC for interrupt routing PM: Adding info for acpi:acpi ACPI: PCI Root Bridge [PCI0] (0000:00) PCI: Probing PCI hardware (bus 00) PM: Adding info for No Bus:pci0000:00 Boot video device is 0000:00:02.0 PCI quirk: region 1000-107f claimed by ICH4 ACPI/GPIO/TCO PCI quirk: region 1180-11bf claimed by ICH4 GPIO PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1 PCI: Transparent bridge - 0000:00:1e.0 PCI: Bus #03 (-#06) is hidden behind transparent bridge #02 (-#02) (try 'pci=assign-busses') Please report the result to linux-kernel to fix this permanently ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT] PM: Adding info for pci:0000:00:00.0 PM: Adding info for pci:0000:00:00.1 PM: Adding info for pci:0000:00:00.3 PM: Adding info for pci:0000:00:02.0 PM: Adding info for pci:0000:00:02.1 PM: Adding info for pci:0000:00:1d.0 PM: Adding info for pci:0000:00:1d.1 PM: Adding info for pci:0000:00:1d.2 PM: Adding info for pci:0000:00:1d.7 PM: Adding info for pci:0000:00:1e.0 PM: Adding info for pci:0000:00:1f.0 PM: Adding info for pci:0000:00:1f.1 PM: Adding info for pci:0000:00:1f.3 PM: Adding info for pci:0000:00:1f.5 PM: Adding info for pci:0000:00:1f.6 PM: Adding info for pci:0000:02:00.0 PM: Adding info for pci:0000:02:05.0 PM: Adding info for pci:0000:02:07.0 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIB._PRT] ACPI: PCI Interrupt Link [LNKA] (IRQs *10) ACPI: PCI Interrupt Link [LNKB] (IRQs *5) ACPI: PCI Interrupt Link [LNKC] (IRQs 11) *0, disabled. ACPI: PCI Interrupt Link [LNKD] (IRQs *11) ACPI: PCI Interrupt Link [LNKE] (IRQs 11) *0, disabled. ACPI: PCI Interrupt Link [LNKF] (IRQs *11) ACPI: PCI Interrupt Link [LNKG] (IRQs 11) *0, disabled. ACPI: PCI Interrupt Link [LNKH] (IRQs *11) ACPI: Embedded Controller [H_EC] (gpe 29) interrupt mode. Linux Plug and Play Support v0.97 (c) Adam Belay pnp: PnP ACPI init PM: Adding info for No Bus:pnp0 PM: Adding info for pnp:00:00 PM: Adding info for pnp:00:01 PM: Adding info for pnp:00:02 PM: Adding info for pnp:00:03 PM: Adding info for pnp:00:04 PM: Adding info for pnp:00:05 PM: Adding info for pnp:00:06 pnp: PnP ACPI: found 7 devices usbcore: registered new driver usbfs usbcore: registered new driver hub PCI: Using ACPI for IRQ routing PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report PCI: Ignore bogus resource 6 [0:0] of 0000:00:02.0 PCI: Bus 3, cardbus bridge: 0000:02:05.0 IO window: 00003400-000034ff IO window: 00003800-000038ff PREFETCH window: 50000000-51ffffff MEM window: 54000000-55ffffff PCI: Bridge: 0000:00:1e.0 IO window: 3000-3fff MEM window: e0200000-e02fffff PREFETCH window: 50000000-51ffffff PCI: Setting latency timer of device 0000:00:1e.0 to 64 ACPI: PCI Interrupt Link [LNKE] enabled at IRQ 11 PCI: setting IRQ 11 as level-triggered ACPI: PCI Interrupt 0000:02:05.0[A] -> Link [LNKE] -> GSI 11 (level, low) -> IRQ 11 NET: Registered protocol family 2 IP route cache hash table entries: 32768 (order: 5, 131072 bytes) TCP established hash table entries: 131072 (order: 10, 4194304 bytes) TCP bind hash table entries: 65536 (order: 9, 2097152 bytes) TCP: Hash tables configured (established 131072 bind 65536) TCP reno registered PM: Adding info for platform:pcspkr Simple Boot Flag at 0x36 set to 0x1 apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16ac) apm: overridden by ACPI. audit: initializing netlink socket (disabled) audit(1153861090.720:1): initialized highmem bounce pool size: 64 pages Total HugeTLB memory allocated, 0 VFS: Disk quotas dquot_6.5.1 Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) Initializing Cryptographic API io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) pci_hotplug: PCI Hot Plug PCI Core version: 0.5 PM: Adding info for platform:vesafb.0 ACPI: CPU0 (power states: C1[C1] C2[C2]) ACPI: Thermal Zone [THRM] (63 C) PM: Adding info for No Bus:pnp1 isapnp: Scanning for PnP cards... isapnp: No Plug & Play device found Real Time Clock Driver v1.12ac Non-volatile memory driver v1.2 Linux agpgart interface v0.101 (c) Dave Jones agpgart: Detected an Intel 855 Chipset. agpgart: Detected 32636K stolen memory. agpgart: AGP aperture is 128M @ 0xe8000000 Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled PM: Adding info for platform:serial8250 ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 5 PCI: setting IRQ 5 as level-triggered ACPI: PCI Interrupt 0000:00:1f.6[B] -> Link [LNKB] -> GSI 5 (level, low) -> IRQ 5 ACPI: PCI interrupt for device 0000:00:1f.6 disabled PM: Adding info for No Bus:isa RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx ICH4: IDE controller at PCI slot 0000:00:1f.1 PCI: Enabling device 0000:00:1f.1 (0005 -> 0007) ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11 ACPI: PCI Interrupt 0000:00:1f.1[A] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11 ICH4: chipset revision 3 ICH4: not 100% native mode: will probe irqs later ide0: BM-DMA at 0x1810-0x1817, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0x1818-0x181f, BIOS settings: hdc:DMA, hdd:pio Probing IDE interface ide0... hda: HITACHI_DK23FA-40, ATA DISK drive PM: Adding info for No Bus:ide0 ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 PM: Adding info for ide:0.0 Probing IDE interface ide1... hdc: HL-DT-STCD-RW/DVD DRIVE GCC-4243N, ATAPI CD/DVD-ROM drive PM: Adding info for No Bus:ide1 ide1 at 0x170-0x177,0x376 on irq 15 PM: Adding info for ide:1.0 hda: max request size: 128KiB hda: 78140160 sectors (40007 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(100) hda: cache flushes supported hda: hda1 hda2 ide-floppy driver 0.99.newide Yenta: CardBus bridge found at 0000:02:05.0 [103c:3084] Yenta: Using CSCINT to route CSC interrupts to PCI Yenta: Routing CardBus interrupts to PCI Yenta TI: socket 0000:02:05.0, mfunc 0x01111112, devctl 0x64 Yenta: ISA IRQ mask 0x04d8, PCI irq 11 Socket status: 30000010 Yenta: Raising subordinate bus# of parent bus (#02) from #02 to #06 pcmcia: parent PCI bridge I/O window: 0x3000 - 0x3fff cs: IO port probe 0x3000-0x3fff: clean. pcmcia: parent PCI bridge Memory window: 0xe0200000 - 0xe02fffff pcmcia: parent PCI bridge Memory window: 0x50000000 - 0x51ffffff usbcore: registered new driver libusual usbcore: registered new driver hiddev usbcore: registered new driver usbhid drivers/usb/input/hid-core.c: v2.6:USB HID core driver PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PSM1] at 0x60,0x64 irq 1,12 PM: Adding info for platform:i8042 serio: i8042 AUX port at 0x60,0x64 irq 12 serio: i8042 KBD port at 0x60,0x64 irq 1 PM: Adding info for serio:serio0 mice: PS/2 mouse device common for all mice md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: bitmap version 4.39 TCP bic registered Initializing IPsec netlink socket NET: Registered protocol family 1 NET: Registered protocol family 17 PM: Adding info for serio:serio1 Using IPI No-Shortcut mode ACPI: (supports S0 S3 S4 S5) Freeing unused kernel memory: 240k freed Write protecting the kernel read-only data: 395k Time: tsc clocksource has been installed. Time: acpi_pm clocksource has been installed. input: AT Translated Set 2 keyboard as /class/input/input0 device-mapper: ioctl: 4.7.0-ioctl (2006-06-24) initialised: dm-devel@redhat.com pccard: PCMCIA card inserted into slot 0 cs: memory probe 0xe0200000-0xe02fffff: excluding 0xe0200000-0xe020ffff pcmcia: registering new device pcmcia0.0 PM: Adding info for pcmcia:0.0 Synaptics Touchpad, model: 1, fw: 5.9, id: 0x236eb3, caps: 0x904713/0x10008 input: SynPS/2 Synaptics TouchPad as /class/input/input1 EXT3-fs: INFO: recovery required on readonly filesystem. EXT3-fs: write access will be enabled during recovery. kjournald starting. Commit interval 5 seconds EXT3-fs: dm-0: orphan cleanup on readonly fs ext3_orphan_cleanup: deleting unreferenced inode 5763820 ext3_orphan_cleanup: deleting unreferenced inode 5765620 ext3_orphan_cleanup: deleting unreferenced inode 5762038 EXT3-fs: dm-0: 3 orphan inodes deleted EXT3-fs: recovery complete. EXT3-fs: mounted filesystem with ordered data mode. orinoco 0.15 (David Gibson , Pavel Roskin , et al) orinoco_cs 0.15 (David Gibson , Pavel Roskin , et al) eth0: Hardware identity 0001:0001:0004:0002 eth0: Station identity 001f:0001:0008:000a eth0: Firmware determined as Lucent/Agere 8.10 eth0: Ad-hoc demo mode supported eth0: IEEE standard IBSS ad-hoc mode supported eth0: WEP supported, 104-bit key eth0: MAC address 00:02:A5:2D:84:BE eth0: Station name "HERMES I" eth0: ready eth0: orinoco_cs at 0.0, irq 3, io 0x3100-0x313f hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache, DMA Uniform CD-ROM driver Revision: 3.20 ieee1394: Initialized config rom entry `ip1394' ACPI: PCI Interrupt Link [LNKF] enabled at IRQ 11 ACPI: PCI Interrupt 0000:02:07.0[A] -> Link [LNKF] -> GSI 11 (level, low) -> IRQ 11 PM: Adding info for ieee1394:fw-host0 ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[11] MMIO=[e0204000-e02047ff] Max Packet=[2048] IR/IT contexts=[4/8] 8139cp: 10/100 PCI Ethernet driver v1.2 (Mar 22, 2004) 8139cp 0000:02:00.0: This (id 10ec:8139 rev 10) is not an 8139C+ compatible chip 8139cp 0000:02:00.0: Try the "8139too" driver instead. ACPI: PCI Interrupt 0000:00:1f.3[B] -> Link [LNKB] -> GSI 5 (level, low) -> IRQ 5 PM: Adding info for No Bus:i2c-0 ACPI: PCI Interrupt Link [LNKH] enabled at IRQ 11 ACPI: PCI Interrupt 0000:00:1d.7[D] -> Link [LNKH] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1d.7 to 64 ehci_hcd 0000:00:1d.7: EHCI Host Controller ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 ehci_hcd 0000:00:1d.7: debug port 1 PCI: cache line size of 32 is not supported by device 0000:00:1d.7 ehci_hcd 0000:00:1d.7: irq 11, io mem 0xe0100000 ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 PM: Adding info for usb:usb1 PM: Adding info for No Bus:usbdev1.1_ep00 usb usb1: configuration #1 chosen from 1 choice PM: Adding info for usb:1-0:1.0 hub 1-0:1.0: USB hub found hub 1-0:1.0: 6 ports detected USB Universal Host Controller Interface driver v3.0 8139too Fast Ethernet driver 0.9.27 PM: Adding info for No Bus:usbdev1.1_ep81 PM: Adding info for No Bus:usbdev1.1 ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10 PCI: setting IRQ 10 as level-triggered ACPI: PCI Interrupt 0000:00:1d.0[A] -> Link [LNKA] -> GSI 10 (level, low) -> IRQ 10 PCI: Setting latency timer of device 0000:00:1d.0 to 64 uhci_hcd 0000:00:1d.0: UHCI Host Controller uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2 uhci_hcd 0000:00:1d.0: irq 10, io base 0x00001820 PM: Adding info for usb:usb2 PM: Adding info for No Bus:usbdev2.1_ep00 usb usb2: configuration #1 chosen from 1 choice PM: Adding info for usb:2-0:1.0 hub 2-0:1.0: USB hub found hub 2-0:1.0: 2 ports detected input: PC Speaker as /class/input/input2 PM: Adding info for No Bus:usbdev2.1_ep81 PM: Adding info for No Bus:usbdev2.1 ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11 ACPI: PCI Interrupt 0000:00:1d.1[B] -> Link [LNKD] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1d.1 to 64 uhci_hcd 0000:00:1d.1: UHCI Host Controller uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3 uhci_hcd 0000:00:1d.1: irq 11, io base 0x00001840 PM: Adding info for usb:usb3 PM: Adding info for No Bus:usbdev3.1_ep00 usb usb3: configuration #1 chosen from 1 choice PM: Adding info for usb:3-0:1.0 hub 3-0:1.0: USB hub found hub 3-0:1.0: 2 ports detected PM: Adding info for No Bus:usbdev3.1_ep81 PM: Adding info for No Bus:usbdev3.1 ACPI: PCI Interrupt 0000:00:1d.2[C] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11 PCI: Setting latency timer of device 0000:00:1d.2 to 64 uhci_hcd 0000:00:1d.2: UHCI Host Controller uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4 uhci_hcd 0000:00:1d.2: irq 11, io base 0x00001860 PM: Adding info for usb:usb4 PM: Adding info for No Bus:usbdev4.1_ep00 usb usb4: configuration #1 chosen from 1 choice PM: Adding info for usb:4-0:1.0 hub 4-0:1.0: USB hub found hub 4-0:1.0: 2 ports detected PM: Adding info for No Bus:usbdev4.1_ep81 PM: Adding info for No Bus:usbdev4.1 ACPI: PCI Interrupt 0000:02:00.0[A] -> Link [LNKA] -> GSI 10 (level, low) -> IRQ 10 eth1: RealTek RTL8139 at 0xf89a4800, 00:c0:9f:63:51:51, IRQ 10 eth1: Identified 8139 chip type 'RTL-8100B/8139D' usb 2-2: new low speed USB device using uhci_hcd and address 2 ACPI: PCI Interrupt 0000:00:1f.5[B] -> Link [LNKB] -> GSI 5 (level, low) -> IRQ 5 PCI: Setting latency timer of device 0000:00:1f.5 to 64 cs: IO port probe 0x100-0x3af: clean. cs: IO port probe 0x3e0-0x4ff: excluding 0x4d0-0x4d7 cs: IO port probe 0x820-0x8ff: clean. cs: IO port probe 0xc00-0xcf7: clean. cs: IO port probe 0xa00-0xaff: clean. Intel 82802 RNG detected PM: Adding info for usb:2-2 PM: Adding info for No Bus:usbdev2.2_ep00 usb 2-2: configuration #1 chosen from 1 choice PM: Adding info for usb:2-2:1.0 input: HID 0461:4d03 as /class/input/input3 input: USB HID v1.00 Mouse [HID 0461:4d03] on usb-0000:00:1d.0-2 PM: Adding info for No Bus:usbdev2.2_ep81 PM: Adding info for No Bus:usbdev2.2 intel8x0_measure_ac97_clock: measured 53458 usecs intel8x0: clocking to 48000 PM: Adding info for ac97:0-0:unknown codec PCI: Enabling device 0000:00:1f.6 (0000 -> 0001) ACPI: PCI Interrupt 0000:00:1f.6[B] -> Link [LNKB] -> GSI 5 (level, low) -> IRQ 5 PCI: Setting latency timer of device 0000:00:1f.6 to 64 PM: Adding info for ieee1394:00c09f00002e3893 ieee1394: Host added: ID:BUS[0-00:1023] GUID[00c09f00002e3893] PM: Adding info for ieee1394:00c09f00002e3893-0 MC'97 0 converters and GPIO not ready (0x1) PM: Adding info for ac97:1-0:unknown codec floppy0: no floppy controllers found lp: driver loaded but no devices found ACPI: AC Adapter [ACAD] (on-line) ACPI: Battery Slot [BAT0] (battery present) ACPI: Power Button (FF) [PWRF] ACPI: Lid Switch [LID0] ACPI: Power Button (CM) [PWRB] ibm_acpi: ec object not found ACPI: Video Device [GFX0] (multi-head: yes rom: yes post: no) md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. device-mapper: multipath: version 1.0.4 loaded loop: loaded (max 8 devices) EXT3 FS on dm-0, internal journal kjournald starting. Commit interval 5 seconds EXT3 FS on hda1, internal journal EXT3-fs: mounted filesystem with ordered data mode. Adding 2031608k swap on /dev/VolGroup00/LogVol01. Priority:-1 extents:1 across:2031608k ======================================================= [ INFO: possible circular locking dependency detected ] ------------------------------------------------------- S06cpuspeed/1580 is trying to acquire lock: (&policy->lock){--..}, at: [] mutex_lock+0x21/0x24 but task is already holding lock: (cpu_bitmask_lock){--..}, at: [] mutex_lock+0x21/0x24 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (cpu_bitmask_lock){--..}: [] lock_acquire+0x4b/0x6c [] __mutex_lock_slowpath+0xbc/0x20a [] mutex_lock+0x21/0x24 [] lock_cpu_hotplug+0x64/0x6f [] __cpufreq_driver_target+0x15/0x6d [] cpufreq_governor_userspace+0x199/0x1cc [] __cpufreq_governor+0x57/0xd8 [] __cpufreq_set_policy+0x197/0x1a9 [] cpufreq_set_policy+0x2d/0x6f [] cpufreq_add_dev+0x31a/0x496 [] sysdev_driver_register+0x5c/0x9b [] cpufreq_register_driver+0x9e/0x14e [] centrino_init+0x9b/0xa2 [] init+0x180/0x2fe [] kernel_thread_helper+0x5/0xb -> #1 (userspace_mutex){--..}: [] lock_acquire+0x4b/0x6c [] __mutex_lock_slowpath+0xbc/0x20a [] mutex_lock+0x21/0x24 [] cpufreq_governor_userspace+0x53/0x1cc [] __cpufreq_governor+0x57/0xd8 [] __cpufreq_set_policy+0x13d/0x1a9 [] cpufreq_set_policy+0x2d/0x6f [] cpufreq_add_dev+0x31a/0x496 [] sysdev_driver_register+0x5c/0x9b [] cpufreq_register_driver+0x9e/0x14e [] centrino_init+0x9b/0xa2 [] init+0x180/0x2fe [] kernel_thread_helper+0x5/0xb -> #0 (&policy->lock){--..}: [] lock_acquire+0x4b/0x6c [] __mutex_lock_slowpath+0xbc/0x20a [] mutex_lock+0x21/0x24 [] store_scaling_governor+0x120/0x15b [] store+0x37/0x48 [] sysfs_write_file+0xab/0xd1 [] vfs_write+0xab/0x157 [] sys_write+0x3b/0x60 [] syscall_call+0x7/0xb other info that might help us debug this: 1 lock held by S06cpuspeed/1580: #0: (cpu_bitmask_lock){--..}, at: [] mutex_lock+0x21/0x24 stack backtrace: [] show_trace_log_lvl+0x54/0xfd [] show_trace+0xd/0x10 [] dump_stack+0x19/0x1b [] print_circular_bug_tail+0x59/0x64 [] __lock_acquire+0x808/0x997 [] lock_acquire+0x4b/0x6c [] __mutex_lock_slowpath+0xbc/0x20a [] mutex_lock+0x21/0x24 [] store_scaling_governor+0x120/0x15b [] store+0x37/0x48 [] sysfs_write_file+0xab/0xd1 [] vfs_write+0xab/0x157 [] sys_write+0x3b/0x60 [] syscall_call+0x7/0xb Lukewarm IQ detected in hotplug locking BUG: warning at kernel/cpu.c:38/lock_cpu_hotplug() (Not tainted) [] show_trace_log_lvl+0x54/0xfd [] show_trace+0xd/0x10 [] dump_stack+0x19/0x1b [] lock_cpu_hotplug+0x49/0x6f [] __create_workqueue+0x52/0x116 [] cpufreq_governor_dbs+0x9f/0x2d7 [cpufreq_ondemand] [] __cpufreq_governor+0x57/0xd8 [] __cpufreq_set_policy+0x13d/0x1a9 [] store_scaling_governor+0x12d/0x15b [] store+0x37/0x48 [] sysfs_write_file+0xab/0xd1 [] vfs_write+0xab/0x157 [] sys_write+0x3b/0x60 [] syscall_call+0x7/0xb Lukewarm IQ detected in hotplug locking BUG: warning at kernel/cpu.c:38/lock_cpu_hotplug() (Not tainted) [] show_trace_log_lvl+0x54/0xfd [] show_trace+0xd/0x10 [] dump_stack+0x19/0x1b [] lock_cpu_hotplug+0x49/0x6f [] cpufreq_governor_dbs+0x275/0x2d7 [cpufreq_ondemand] [] __cpufreq_governor+0x57/0xd8 [] __cpufreq_set_policy+0x197/0x1a9 [] store_scaling_governor+0x12d/0x15b [] store+0x37/0x48 [] sysfs_write_file+0xab/0xd1 [] vfs_write+0xab/0x157 [] sys_write+0x3b/0x60 [] syscall_call+0x7/0xb ip_tables: (C) 2000-2006 Netfilter Core Team Netfilter messages via NETLINK v0.30. ip_conntrack version 2.4 (7927 buckets, 63416 max) - 228 bytes per conntrack eth1: New link status: Connected (0001) audit(1153853928.095:2): audit_pid=1809 old=0 by auid=4294967295 DLM (built Jul 24 2006 22:44:14) installed Bluetooth: Core ver 2.10 PM: Adding info for platform:bluetooth NET: Registered protocol family 31 Bluetooth: HCI device and connection manager initialized Bluetooth: HCI socket layer initialized Bluetooth: L2CAP ver 2.8 Bluetooth: L2CAP socket layer initialized Bluetooth: RFCOMM socket layer initialized Bluetooth: RFCOMM TTY layer initialized Bluetooth: RFCOMM ver 1.8 Bluetooth: HIDP (Human Interface Emulation) ver 1.1 NET: Registered protocol family 10 lo: Disabled Privacy Extensions IPv6 over IPv4 tunneling driver PM: Removing info for ac97:1-0:unknown codec ACPI: PCI interrupt for device 0000:00:1f.6 disabled eth1: no IPv6 routers present