An userspace program reading continuously an USB2 HID mouse's Interrupt IN endpoint causes stable kernels to oops. We have encountered this in several stable kernels, the oldest tested being 2.6.32 and the latest 3.5.4. We found this bug originally from systems with SMARTBoards (http://smarttech.com/smartboard) plugged in and proprietary SMART Board Service userspace driver process running and communicating with the board. However, the bug can be reproduced with a normal USB2 HID mouse and a simple program using libusb to read continuously mouse's Interrupt IN endpoint. See usboops.c listing below. (usboops.c was written to mimic the behavior of the proprietary SMART Board Service by observing/tracing it's libusb-usage, and sadly enough, it's quite accurate clone) We also observed that the problem cannot be reproduced with 3.6-rc7 (or at least it is really hard to reproduce compared to stable releases). We therefore bisected v3.5.4...v3.6-rc7 and found out that df2022553dd8d34d49e16c19d851ea619438f0ef is the first commit which removes or at least makes it really difficult to reproduce the problem. Does that commit (or the combination of the nearby EHCI-related commits) fix this issue or do they make it just significantly harder to reproduce? Oops: [ 182.520363] BUG: unable to handle kernel paging request at 00efe000 [ 182.526733] IP: [<c11381d1>] __kmalloc+0xb1/0x1f0 [ 182.531505] *pdpt = 000000002ed88001 *pde = 0000000000000000 [ 182.537339] Oops: 0000 [#1] SMP [ 182.540628] Modules linked in: nls_utf8 isofs snd_hda_codec_hdmi snd_hda_codec_realtek bnep rfcomm bluetooth parport_pc ppdev snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event i915 snd_seq drm_kms_helper drm snd_timer snd_seq_device snd coretemp dcdbas hid_generic microcode soundcore i2c_algo_bit snd_page_alloc psmouse mac_hid serio_raw mei video lp parport usbhid hid e1000e [ 182.578242] [ 182.579752] Pid: 4482, comm: usboops Not tainted 3.5.4-opinsys #2 Dell Inc. OptiPlex 790/0D28YY [ 182.588589] EIP: 0060:[<c11381d1>] EFLAGS: 00210206 CPU: 0 [ 182.594138] EIP is at __kmalloc+0xb1/0x1f0 [ 182.598280] EAX: 00000000 EBX: 00efe000 ECX: 0001e0a7 EDX: 0001e0a6 [ 182.604617] ESI: f3002200 EDI: 00efe000 EBP: eecffe80 ESP: eecffe4c [ 182.610951] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 182.616409] CR0: 8005003b CR2: 00efe000 CR3: 36bf5000 CR4: 000407f0 [ 182.622744] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 182.629078] DR6: ffff0ff0 DR7: 00000400 [ 182.632956] Process usboops (pid: 4482, ti=eecfe000 task=f18cb280 task.ti=eecfe000) [ 182.640695] Stack: [ 182.642729] 000220af c1421199 000000c0 00efe000 0001e0a6 00022001 c142b66a 000000d0 [ 182.650666] 00000004 0001e0a7 f690f660 f19e4900 f3200a00 eecfff10 c142b66a 00000004 [ 182.658606] 00000000 00000000 00000000 00000004 0009a45d eedeb0c0 eecffefc f690f670 [ 182.666541] Call Trace: [ 182.669015] [<c1421199>] ? usb_alloc_urb+0x19/0x40 [ 182.673950] [<c142b66a>] ? usbdev_do_ioctl+0x165a/0x1c10 [ 182.679410] [<c142b66a>] usbdev_do_ioctl+0x165a/0x1c10 [ 182.684697] [<c142bc20>] ? usbdev_do_ioctl+0x1c10/0x1c10 [ 182.690166] [<c142bc2d>] usbdev_ioctl+0xd/0x10 [ 182.694749] [<c1157aa2>] do_vfs_ioctl+0x82/0x5b0 [ 182.699506] [<c108ef6b>] ? ktime_get_ts+0xeb/0x120 [ 182.704441] [<c12bf8f0>] ? copy_to_user+0x40/0x60 [ 182.709287] [<c115869a>] ? poll_select_copy_remaining+0xca/0x110 [ 182.717100] [<c108f0f4>] ? getnstimeofday+0x54/0x120 [ 182.723854] [<c115803f>] sys_ioctl+0x6f/0x80 [ 182.729890] [<c104b5a2>] ? sys_gettimeofday+0x32/0x70 [ 182.736743] [<c15a619f>] sysenter_do_call+0x12/0x28 [ 182.743394] Code: 01 00 00 8b 06 64 03 05 e4 7f 90 c1 8b 50 04 8b 18 85 db 89 5d d8 0f 84 28 01 00 00 8b 7d d8 8d 4a 01 8b 46 14 89 4d f0 89 55 dc <8b> 04 07 89 45 e0 89 c3 89 f8 8b 3e 64 0f c7 0f 0f 94 c0 84 c0 [ 182.765014] EIP: [<c11381d1>] __kmalloc+0xb1/0x1f0 SS:ESP 0068:eecffe4c [ 182.772621] CR2: 0000000000efe000 [ 182.786426] ---[ end trace 8c5bb233276a5431 ]--- Steps to reproduce the problem ============================== 1. Plug in an USB2-mouse. (Any USB2 HID device with at least one IN interrupt endpoint is probably ok too) 2. Write following kind of simple program against libusb 0.1 API, usboops.c: #include <usb.h> /* TODO: Check `lsusb -v' for correct values on your machine. * An USB2 HID mouse is a good choice. */ static const int ID_VENDOR = ; static const int ID_PRODUCT = ; static const int B_INTERFACE_NUMBER = ; static const int B_ENDPOINT_ADDRESS = ; /* Any interrupt IN endpoint. */ static const int W_MAX_PACKET_SIZE = ; int main(void) { struct usb_bus *bus; struct usb_device *device; usb_dev_handle *dev_handle = NULL; usb_init(); usb_find_busses(); usb_find_devices(); for (bus = usb_get_busses(); bus; bus = bus->next) { for (device = bus->devices; device; device = device->next) { if (device->descriptor.idVendor == ID_VENDOR && device->descriptor.idProduct == ID_PRODUCT) { dev_handle = usb_open(device); break; } } } usb_detach_kernel_driver_np(dev_handle, B_INTERFACE_NUMBER); usb_claim_interface(dev_handle, B_INTERFACE_NUMBER); while (1) { char buf[W_MAX_PACKET_SIZE]; usb_interrupt_read(dev_handle, B_ENDPOINT_ADDRESS, buf, sizeof(buf), 1); } return 0; } 2. Fill in correct values for those static consts: * idVendor * idProduct * bInterfaceNumber * bEndpointAddress * wMaxPacketSize lsusb -v and check corresponding values of your USB2-mouse 3. gcc -ousboops usboops.c -lusb $ ldd usboops linux-gate.so.1 => (0xb77db000) libusb-0.1.so.4 => /lib/i386-linux-gnu/libusb-0.1.so.4 (0xb77bd000) libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xb7618000) /lib/ld-linux.so.2 (0xb77dc000) 4. ./usboops # and move your mouse until oops The oops happens really fast, normally it takes only couple of seconds, but varies of course slightly. On all systems where we have tested the above prodecure, oopses have happened in less than 30 seconds. System information ================== # cat /proc/version Linux version 3.5.4-opinsys (opinsys@optiplex-790) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #2 SMP Mon Oct 1 14:13:41 EEST 2012 # cat /proc/modules nls_utf8 12493 1 - Live 0x00000000 isofs 39305 1 - Live 0x00000000 snd_hda_codec_hdmi 31471 1 - Live 0x00000000 snd_hda_codec_realtek 59057 1 - Live 0x00000000 rfcomm 37289 0 - Live 0x00000000 bnep 17711 2 - Live 0x00000000 bluetooth 182841 10 rfcomm,bnep, Live 0x00000000 parport_pc 31968 1 - Live 0x00000000 ppdev 12782 0 - Live 0x00000000 snd_hda_intel 32531 3 - Live 0x00000000 i915 455889 3 - Live 0x00000000 snd_hda_codec 111340 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel, Live 0x00000000 snd_hwdep 13276 1 snd_hda_codec, Live 0x00000000 snd_pcm 80163 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec, Live 0x00000000 snd_seq_midi 13132 0 - Live 0x00000000 snd_rawmidi 25114 1 snd_seq_midi, Live 0x00000000 snd_seq_midi_event 14475 1 snd_seq_midi, Live 0x00000000 snd_seq 51256 2 snd_seq_midi,snd_seq_midi_event, Live 0x00000000 drm_kms_helper 45139 1 i915, Live 0x00000000 drm 226226 4 i915,drm_kms_helper, Live 0x00000000 snd_timer 24503 2 snd_pcm,snd_seq, Live 0x00000000 hid_generic 12445 0 - Live 0x00000000 snd_seq_device 14137 3 snd_seq_midi,snd_rawmidi,snd_seq, Live 0x00000000 usbhid 45722 0 - Live 0x00000000 psmouse 71694 0 - Live 0x00000000 snd 56367 16 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device, Live 0x00000000 hid 81915 2 hid_generic,usbhid, Live 0x00000000 coretemp 13204 0 - Live 0x00000000 dcdbas 14054 0 - Live 0x00000000 soundcore 12600 1 snd, Live 0x00000000 microcode 18209 0 - Live 0x00000000 snd_page_alloc 14036 2 snd_hda_intel,snd_pcm, Live 0x00000000 serio_raw 13031 0 - Live 0x00000000 i2c_algo_bit 13197 1 i915, Live 0x00000000 mei 35765 0 - Live 0x00000000 mac_hid 13037 0 - Live 0x00000000 video 18641 1 i915, Live 0x00000000 lp 13299 0 - Live 0x00000000 parport 40762 3 parport_pc,ppdev,lp, Live 0x00000000 e1000e 170470 0 - Live 0x00000000 # lspci -vvv 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) Subsystem: Dell Device 04ad Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx- Latency: 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> Kernel driver in use: agpgart-intel 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device 04ad Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 43 Region 0: Memory at e0c00000 (64-bit, non-prefetchable) [size=4M] Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M] Region 4: I/O ports at 3000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee0100c Data: 4171 Capabilities: [d0] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [a4] PCI Advanced Features AFCap: TP+ FLR+ AFCtrl: FLR- AFStatus: TP- Kernel driver in use: i915 Kernel modules: i915 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) Subsystem: Dell Device 04ad Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 42 Region 0: Memory at e1ab0000 (64-bit, non-prefetchable) [size=16] Capabilities: [50] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee0f00c Data: 4169 Kernel driver in use: mei Kernel modules: mei 00:16.3 Serial controller: Intel Corporation 6 Series/C200 Series Chipset Family KT Controller (rev 04) (prog-if 02 [16550]) Subsystem: Dell Device 04ad Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin B routed to IRQ 17 Region 0: I/O ports at 30e0 [size=8] Region 1: Memory at e1a90000 (32-bit, non-prefetchable) [size=4K] Capabilities: [c8] Power Management version 3 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+ Address: 0000000000000000 Data: 0000 Kernel driver in use: serial 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) Subsystem: Dell Device 047e Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 41 Region 0: Memory at e1a00000 (32-bit, non-prefetchable) [size=128K] Region 1: Memory at e1a80000 (32-bit, non-prefetchable) [size=4K] Region 2: I/O ports at 3080 [size=32] Capabilities: [c8] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME- Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee0400c Data: 4191 Capabilities: [e0] PCI Advanced Features AFCap: TP+ FLR+ AFCtrl: FLR- AFStatus: TP- Kernel driver in use: e1000e Kernel modules: e1000e 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) (prog-if 20 [EHCI]) Subsystem: Dell Device 04ad Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 16 Region 0: Memory at e1a70000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features AFCap: TP+ FLR+ AFCtrl: FLR- AFStatus: TP- Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04) Subsystem: Dell Device 04ad Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 44 Region 0: Memory at e1a60000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee0a00c Data: 4181 Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us ExtTag- RBE- FLReset+ DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- MaxPayload 128 bytes, MaxReadReq 128 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk- ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt- Capabilities: [100 v1] Virtual Channel Caps: LPEVC=0 RefClk=100ns PATEntryBits=1 Arb: Fixed- WRR32- WRR64- WRR128- Ctrl: ArbSelect=Fixed Status: InProgress- VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans- Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256- Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01 Status: NegoPending- InProgress- VC1: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans- Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256- Ctrl: Enable+ ID=1 ArbSelect=Fixed TC/VC=22 Status: NegoPending- InProgress- Capabilities: [130 v1] Root Complex Link Desc: PortNumber=0f ComponentID=00 EltType=Config Link0: Desc: TargetPort=00 TargetComponent=00 AssocRCRB- LinkType=MemMapped LinkValid+ Addr: 00000000fed1c000 Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000f000-00000fff Memory behind bridge: fff00000-000fffff Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us ExtTag- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- MaxPayload 128 bytes, MaxReadReq 128 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <1us, L1 <4us ClockPM- Surprise- LLActRep+ BwNot- LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk- ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise- Slot #0, PowerLimit 10.000W; Interlock- NoCompl+ SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg- Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock- SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- Interlock- Changed: MRL- PresDet- LinkState- RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible- RootCap: CRSVisible- RootSta: PME ReqID 0000, PMEStatus- PMEPending- DevCap2: Completion Timeout: Range BC, TimeoutDis+ ARIFwd- DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd- LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -3.5dB Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Address: 00000000 Data: 0000 Capabilities: [90] Subsystem: Dell Device 04ad Capabilities: [a0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Kernel driver in use: pcieport 00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: e1000000-e19fffff Prefetchable memory behind bridge: 00000000e0000000-00000000e09fffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us ExtTag- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- MaxPayload 128 bytes, MaxReadReq 128 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- LnkCap: Port #3, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <1us, L1 <4us ClockPM- Surprise- LLActRep+ BwNot- LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk- ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+ Slot #2, PowerLimit 10.000W; Interlock- NoCompl+ SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt- HPIrq- LinkChg- Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock- SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- Interlock- Changed: MRL- PresDet- LinkState- RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible- RootCap: CRSVisible- RootSta: PME ReqID 0000, PMEStatus- PMEPending- DevCap2: Completion Timeout: Range BC, TimeoutDis+ ARIFwd- DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd- LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -3.5dB Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Address: 00000000 Data: 0000 Capabilities: [90] Subsystem: Dell Device 04ad Capabilities: [a0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Kernel driver in use: pcieport 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) (prog-if 20 [EHCI]) Subsystem: Dell Device 04ad Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 17 Region 0: Memory at e1a50000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features AFCap: TP+ FLR+ AFCtrl: FLR- AFStatus: TP- Kernel driver in use: ehci_hcd 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a4) (prog-if 01 [Subtractive decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 I/O behind bridge: 0000f000-00000fff Memory behind bridge: fff00000-000fffff Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: [50] Subsystem: Dell Device 04ad 00:1f.0 ISA bridge: Intel Corporation Q65 Express Chipset Family LPC Controller (rev 04) Subsystem: Dell Device 04ad Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family SATA AHCI Controller (rev 04) (prog-if 01 [AHCI 1.0]) Subsystem: Dell Device 04ad Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin C routed to IRQ 40 Region 0: I/O ports at 30d0 [size=8] Region 1: I/O ports at 30c0 [size=4] Region 2: I/O ports at 30b0 [size=8] Region 3: I/O ports at 30a0 [size=4] Region 4: I/O ports at 3060 [size=32] Region 5: Memory at e1a40000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee0100c Data: 4151 Capabilities: [70] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-) Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004 Capabilities: [b0] PCI Advanced Features AFCap: TP+ FLR+ AFCtrl: FLR- AFStatus: TP- Kernel driver in use: ahci 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04) Subsystem: Dell Device 04ad Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin C routed to IRQ 11 Region 0: Memory at e1a30000 (64-bit, non-prefetchable) [size=256] Region 4: I/O ports at 3040 [size=32] # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz stepping : 7 microcode : 0x14 cpu MHz : 1600.000 cache size : 3072 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6186.17 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz stepping : 7 microcode : 0x14 cpu MHz : 1600.000 cache size : 3072 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 2 initial apicid : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6186.17 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz stepping : 7 microcode : 0x14 cpu MHz : 1600.000 cache size : 3072 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6186.17 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz stepping : 7 microcode : 0x14 cpu MHz : 3100.000 cache size : 3072 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 3 initial apicid : 3 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt tsc_deadline_timer xsave avx lahf_lm arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6186.17 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: # cat /proc/ioports 0000-0cf7 : PCI Bus 0000:00 0000-001f : dma1 0020-0021 : pic1 0040-0043 : timer0 0050-0053 : timer1 0060-0060 : keyboard 0064-0064 : keyboard 0070-0077 : rtc0 0080-008f : dma page reg 00a0-00a1 : pic2 00c0-00df : dma2 00f0-00ff : fpu 0378-037a : parport0 03f8-03ff : serial 0400-0453 : pnp 00:05 0400-0403 : ACPI PM1a_EVT_BLK 0404-0405 : ACPI PM1a_CNT_BLK 0408-040b : ACPI PM_TMR 0410-0415 : ACPI CPU throttle 0420-042f : ACPI GPE0_BLK 0450-0450 : ACPI PM2_CNT_BLK 0454-0457 : pnp 00:07 0458-047f : pnp 00:05 0500-057f : pnp 00:05 0680-069f : pnp 00:05 0cf8-0cff : PCI conf1 0d00-ffff : PCI Bus 0000:00 164e-164f : pnp 00:05 2000-2fff : PCI Bus 0000:02 3000-303f : 0000:00:02.0 3040-305f : 0000:00:1f.3 3060-307f : 0000:00:1f.2 3060-307f : ahci 3080-309f : 0000:00:19.0 30a0-30a3 : 0000:00:1f.2 30a0-30a3 : ahci 30b0-30b7 : 0000:00:1f.2 30b0-30b7 : ahci 30c0-30c3 : 0000:00:1f.2 30c0-30c3 : ahci 30d0-30d7 : 0000:00:1f.2 30d0-30d7 : ahci 30e0-30e7 : 0000:00:16.3 30e0-30e7 : serial ffff-ffff : pnp 00:05 ffff-ffff : pnp 00:05 ffff-ffff : pnp 00:05 # cat /proc/iomem 00000000-0000ffff : reserved 00010000-0009abff : System RAM 0009ac00-0009ffff : reserved 000a0000-000bffff : PCI Bus 0000:00 000a0000-000bffff : Video RAM area 000c0000-000cd7ff : Video ROM 000cd800-000ce7ff : Adapter ROM 000ce800-000cf7ff : Adapter ROM 000e0000-000fffff : reserved 000f0000-000fffff : System ROM 00100000-1fffffff : System RAM 01000000-015a7594 : Kernel code 015a7595-01855ebf : Kernel data 01914000-019ebfff : Kernel bss 20000000-201fffff : reserved 20000000-201fffff : pnp 00:0b 20200000-3fffffff : System RAM 40000000-401fffff : reserved 40000000-401fffff : pnp 00:0b 40200000-ca9fcfff : System RAM ca9fd000-caa40fff : reserved caa41000-cadb6fff : System RAM cadb7000-cade6fff : reserved cade7000-cafe6fff : ACPI Non-volatile Storage cafe7000-caffefff : ACPI Tables cafff000-caffffff : System RAM cb000000-cbffffff : RAM buffer cfa00000-feafffff : PCI Bus 0000:00 d0000000-dfffffff : 0000:00:02.0 e0000000-e09fffff : PCI Bus 0000:02 e0c00000-e0ffffff : 0000:00:02.0 e1000000-e19fffff : PCI Bus 0000:02 e1a00000-e1a1ffff : 0000:00:19.0 e1a00000-e1a1ffff : e1000e e1a30000-e1a300ff : 0000:00:1f.3 e1a40000-e1a407ff : 0000:00:1f.2 e1a40000-e1a407ff : ahci e1a50000-e1a503ff : 0000:00:1d.0 e1a50000-e1a503ff : ehci_hcd e1a60000-e1a63fff : 0000:00:1b.0 e1a60000-e1a63fff : ICH HD audio e1a70000-e1a703ff : 0000:00:1a.0 e1a70000-e1a703ff : ehci_hcd e1a80000-e1a80fff : 0000:00:19.0 e1a80000-e1a80fff : e1000e e1a90000-e1a90fff : 0000:00:16.3 e1ab0000-e1ab000f : 0000:00:16.0 e1ab0000-e1ab000f : mei f8000000-fbffffff : PCI MMCONFIG 0000 [bus 00-3f] f8000000-fbffffff : pnp 00:0a fec00000-fec003ff : IOAPIC 0 fed00000-fed003ff : HPET 0 fed10000-fed17fff : pnp 00:0a fed18000-fed18fff : pnp 00:0a fed19000-fed19fff : pnp 00:0a fed1c000-fed1ffff : reserved fed1c000-fed1ffff : pnp 00:0a fed20000-fed3ffff : pnp 00:0a fed40000-fed44fff : PCI Bus 0000:00 fed45000-fed8ffff : pnp 00:0a fed90000-fed93fff : pnp 00:0a fee00000-feefffff : pnp 00:0a fee00000-fee00fff : Local APIC ffc00000-ffc1ffff : reserved 100000000-12dffffff : System RAM 12e000000-12fffffff : RAM buffer Linux optiplex-790 3.5.4-opinsys #2 SMP Mon Oct 1 14:13:41 EEST 2012 i686 i686 i386 GNU/Linux Gnu C 4.6 Gnu make 3.81 binutils 2.22 util-linux 2.20.1 mount support module-init-tools 3.16 e2fsprogs 1.42 pcmciautils 018 PPP 2.4.5 Linux C Library 2.15 Dynamic linker (ldd) 2.15 Procps 3.2.8 Net-tools 1.60 Kbd 1.15.2 Sh-utils 8.13 Modules Loaded nls_utf8 isofs snd_hda_codec_hdmi snd_hda_codec_realtek rfcomm bnep bluetooth parport_pc ppdev snd_hda_intel i915 snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq drm_kms_helper drm snd_timer hid_generic snd_seq_device usbhid psmouse snd hid coretemp dcdbas soundcore microcode snd_page_alloc serio_raw i2c_algo_bit mei mac_hid video lp parport e1000e -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
