BUG: soft lockup - CPU#0 stuck for 61s!

[Brian J. Murrell]

Binary package hint: linux-image

As filed in bug 397058 which seems to be getting ignored (so I'm assuming it's in the wrong place):

I've been experiencing lockups on the last few Karmic kernels. My less-than-informed opinion is that it's in NFS4 somewhere, given the stack traces and the soft lockup message at the end of traces:

[ 5436.357006] BUG: soft lockup - CPU#1 stuck for 61s! [10.75.22.3-mana:24899]
[ 5436.360017] Modules linked in: xt_multiport binfmt_misc nvidia(P) agpgart bridge stp bnep tun des_generic cbc autofs4 video output rpcsec_gss_krb5 nfsd exportfs nfs lockd nfs_acl auth_rpcgss sunrpc nf_conntrack_ipv6 xt_hl ipt_LOG xt_limit ipt_REJECT xt_tcpudp xt_state ipt_addrtype ip6table_filter ip6_tables nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables it87 hwmon_vid eeprom lp snd_hda_codec_analog msp3400 tuner_simple tuner_types tea5767 snd_emu10k1_synth snd_hda_intel tuner snd_emux_synth snd_hda_codec bttv snd_seq_virmidi snd_seq_midi_emul ir_common snd_seq_dummy snd_emu10k1 i2c_algo_bit snd_seq_oss snd_ac97_codec v4l2_common videodev snd_seq_midi v4l1_compat snd_bt87x snd_rawmidi ac97_bus videobuf_dma_sg snd_seq_midi_event snd_pcm_oss snd_mixer_oss snd_pcm videobuf_core emu10k1_gp snd_seq snd_util_mem btcx_risc ns558 gameport snd_seq_device snd_timer snd_hwdep tveeprom k8temp asus_atk0110 btusb i2c_nforce2 pcspkr snd soundcore snd_page_alloc ppdev parport_pc parport psmouse serio_raw ohci1394 ieee1394 forcedeth floppy raid10 raid456 raid6_pq async_xor async_memcpy async_tx xor raid1 raid0 multipath linear fbcon tileblit font bitblit softcursor
[ 5436.360017]
[ 5436.360017] Pid: 24899, comm: 10.75.22.3-mana Tainted: P (2.6.31-2-generic #16-Ubuntu) System Product Name
[ 5436.360017] EIP: 0060:[<fa095c85>] EFLAGS: 00000246 CPU: 1
[ 5436.360017] EIP is at nfs4_state_manager+0x55/0x1d0 [nfs]
[ 5436.360017] EAX: 00000000 EBX: f426d0c8 ECX: 00000000 EDX: 00000040
[ 5436.360017] ESI: f426d000 EDI: 00000000 EBP: f7189fac ESP: f7189f94
[ 5436.360017] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 5436.360017] CR0: 8005003b CR2: b8064000 CR3: 00811000 CR4: 00000690
[ 5436.360017] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 5436.360017] DR6: ffff0ff0 DR7: 00000400
[ 5436.360017] Call Trace:
[ 5436.360017] [<fa095e00>] ? nfs4_run_state_manager+0x0/0x30 [nfs]
[ 5436.360017] [<fa095e00>] ? nfs4_run_state_manager+0x0/0x30 [nfs]
[ 5436.360017] [<fa095e17>] nfs4_run_state_manager+0x17/0x30 [nfs]
[ 5436.360017] [<c0156364>] kthread+0x74/0x80
[ 5436.360017] [<c01562f0>] ? kthread+0x0/0x80
[ 5436.360017] [<c0103f57>] kernel_thread_helper+0x7/0x10

I will attach the output of a sysrq-t while it was locked up.

$ uname -a
Linux pc 2.6.31-2-generic #16-Ubuntu SMP Mon Jul 6 20:38:51 UTC 2009 i686 GNU/Linux

$ cat /proc/version_signature
Ubuntu 2.6.31-2.16-generic

$ sudo lspci -vnvn
[sudo] password for brian:
00:00.0 RAM memory [0500]: nVidia Corporation C51 Host Bridge [10de:02f0] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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: [44] HyperTransport: Slave or Primary Interface
  Command: BaseUnitID=0 UnitCnt=15 MastHost- DefDir- DUL-
  Link Control 0: CFlE+ CST- CFE- <LkFail- Init+ EOC- TXO- <CRCErr=0 IsocEn- LSEn- ExtCTL- 64b-
  Link Config 0: MLWI=16bit DwFcIn- MLWO=16bit DwFcOut- LWI=16bit DwFcInEn- LWO=16bit DwFcOutEn-
  Link Control 1: CFlE+ CST- CFE- <LkFail- Init+ EOC- TXO- <CRCErr=0 IsocEn- LSEn+ ExtCTL- 64b-
  Link Config 1: MLWI=16bit DwFcIn- MLWO=16bit DwFcOut- LWI=8bit DwFcInEn- LWO=8bit DwFcOutEn-
  Revision ID: 1.03
  Link Frequency 0: 1.0GHz
  Link Error 0: <Prot- <Ovfl- <EOC- CTLTm-
  Link Frequency Capability 0: 200MHz+ 300MHz+ 400MHz+ 500MHz+ 600MHz+ 800MHz+ 1.0GHz+ 1.2GHz- 1.4GHz- 1.6GHz- Vend-
  Feature Capability: IsocFC+ LDTSTOP+ CRCTM- ECTLT- 64bA- UIDRD-
  Link Frequency 1: 800MHz
  Link Error 1: <Prot- <Ovfl- <EOC- CTLTm-
  Link Frequency Capability 1: 200MHz+ 300MHz+ 400MHz+ 500MHz+ 600MHz+ 800MHz+ 1.0GHz+ 1.2GHz- 1.4GHz- 1.6GHz- Vend-
  Error Handling: PFlE+ OFlE+ PFE- OFE- EOCFE- RFE- CRCFE- SERRFE- CF- RE- PNFE- ONFE- EOCNFE- RNFE- CRCNFE- SERRNFE-
  Prefetchable memory behind bridge Upper: 00-00
  Bus Number: 00
 Capabilities: [e0] HyperTransport: MSI Mapping Enable+ Fixed-
  Mapping Address Base: 00000000fee00000

00:00.1 RAM memory [0500]: nVidia Corporation C51 Memory Controller 0 [10de:02fa] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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-

00:00.2 RAM memory [0500]: nVidia Corporation C51 Memory Controller 1 [10de:02fe] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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-

00:00.3 RAM memory [0500]: nVidia Corporation C51 Memory Controller 5 [10de:02f8] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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-

00:00.4 RAM memory [0500]: nVidia Corporation C51 Memory Controller 4 [10de:02f9] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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

00:00.5 RAM memory [0500]: nVidia Corporation C51 Host Bridge [10de:02ff] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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: [44] #00 [00fe]
 Capabilities: [fc] #00 [0000]

00:00.6 RAM memory [0500]: nVidia Corporation C51 Memory Controller 3 [10de:027f] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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-

00:00.7 RAM memory [0500]: nVidia Corporation C51 Memory Controller 2 [10de:027e] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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-

00:02.0 PCI bridge [0604]: nVidia Corporation C51 PCI Express Bridge [10de:02fc] (rev a1)
 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: 32 bytes
 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
 I/O behind bridge: 0000a000-0000afff
 Memory behind bridge: fd800000-fd8fffff
 Prefetchable memory behind bridge: 00000000fd700000-00000000fd7fffff
 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] Subsystem: nVidia Corporation Device [10de:0000]
 Capabilities: [48] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/1 Enable+
  Address: 00000000fee0300c Data: 4149
 Capabilities: [60] HyperTransport: MSI Mapping Enable- Fixed-
  Mapping Address Base: 00000000fee00000
 Capabilities: [80] Express (v1) Root Port (Slot+), MSI 00
  DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us
   ExtTag- RBE- FLReset-
  DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
   RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
   MaxPayload 128 bytes, MaxReadReq 512 bytes
  DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
  LnkCap: Port #2, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
   ClockPM- Suprise- LLActRep+ BwNot-
  LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
   ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
  LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surpise-
   Slot # 0, PowerLimit 0.000000; Interlock- NoCompl-
  SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
   Control: AttnInd Off, PwrInd On, 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-
 Capabilities: [100] Virtual Channel <?>
 Kernel driver in use: pcieport-driver
 Kernel modules: shpchp

00:03.0 PCI bridge [0604]: nVidia Corporation C51 PCI Express Bridge [10de:02fd] (rev a1)
 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: 32 bytes
 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
 I/O behind bridge: 00008000-00008fff
 Memory behind bridge: fde00000-fdefffff
 Prefetchable memory behind bridge: 00000000fdd00000-00000000fddfffff
 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] Subsystem: nVidia Corporation Device [10de:0000]
 Capabilities: [48] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/1 Enable+
  Address: 00000000fee0300c Data: 4151
 Capabilities: [60] HyperTransport: MSI Mapping Enable- Fixed-
  Mapping Address Base: 00000000fee00000
 Capabilities: [80] Express (v1) Root Port (Slot+), MSI 00
  DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us
   ExtTag- RBE- FLReset-
  DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
   RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
   MaxPayload 128 bytes, MaxReadReq 512 bytes
  DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
  LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
   ClockPM- Suprise- LLActRep+ BwNot-
  LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
   ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
  LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surpise-
   Slot # 0, PowerLimit 0.000000; Interlock- NoCompl-
  SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
   Control: AttnInd Off, PwrInd On, 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-
 Capabilities: [100] Virtual Channel <?>
 Kernel driver in use: pcieport-driver
 Kernel modules: shpchp

00:04.0 PCI bridge [0604]: nVidia Corporation C51 PCI Express Bridge [10de:02fb] (rev a1)
 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: 32 bytes
 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
 I/O behind bridge: 0000b000-0000bfff
 Memory behind bridge: fdc00000-fdcfffff
 Prefetchable memory behind bridge: 00000000fd900000-00000000fd9fffff
 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] Subsystem: nVidia Corporation Device [10de:0000]
 Capabilities: [48] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/1 Enable+
  Address: 00000000fee0300c Data: 4159
 Capabilities: [60] HyperTransport: MSI Mapping Enable- Fixed-
  Mapping Address Base: 00000000fee00000
 Capabilities: [80] Express (v1) Root Port (Slot+), MSI 00
  DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us
   ExtTag- RBE- FLReset-
  DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
   RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
   MaxPayload 128 bytes, MaxReadReq 512 bytes
  DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
  LnkCap: Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <4us
   ClockPM- Suprise- LLActRep+ BwNot-
  LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
   ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
  LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surpise-
   Slot # 0, PowerLimit 0.000000; Interlock- NoCompl-
  SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
   Control: AttnInd Off, PwrInd On, 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-
 Capabilities: [100] Virtual Channel <?>
 Kernel driver in use: pcieport-driver
 Kernel modules: shpchp

00:05.0 VGA compatible controller [0300]: nVidia Corporation C51PV [GeForce 6150] [10de:0240] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81cd]
 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 16
 Region 0: Memory at fc000000 (32-bit, non-prefetchable) [size=16M]
 Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M]
 Region 3: Memory at fb000000 (64-bit, non-prefetchable) [size=16M]
 [virtual] Expansion ROM at c0000000 [disabled] [size=128K]
 Capabilities: [48] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
  Address: 0000000000000000 Data: 0000
 Kernel driver in use: nvidia
 Kernel modules: nvidia, nvidiafb

00:09.0 RAM memory [0500]: nVidia Corporation MCP51 Host Bridge [10de:0270] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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: [44] HyperTransport: Slave or Primary Interface
  Command: BaseUnitID=9 UnitCnt=15 MastHost- DefDir- DUL-
  Link Control 0: CFlE+ CST- CFE- <LkFail- Init+ EOC- TXO- <CRCErr=0 IsocEn- LSEn+ ExtCTL- 64b-
  Link Config 0: MLWI=8bit DwFcIn- MLWO=8bit DwFcOut- LWI=8bit DwFcInEn- LWO=8bit DwFcOutEn-
  Link Control 1: CFlE- CST- CFE- <LkFail+ Init- EOC+ TXO+ <CRCErr=0 IsocEn- LSEn- ExtCTL- 64b-
  Link Config 1: MLWI=8bit DwFcIn- MLWO=8bit DwFcOut- LWI=8bit DwFcInEn- LWO=8bit DwFcOutEn-
  Revision ID: 1.03
  Link Frequency 0: 800MHz
  Link Error 0: <Prot- <Ovfl- <EOC- CTLTm-
  Link Frequency Capability 0: 200MHz+ 300MHz+ 400MHz+ 500MHz+ 600MHz+ 800MHz+ 1.0GHz+ 1.2GHz- 1.4GHz- 1.6GHz- Vend-
  Feature Capability: IsocFC+ LDTSTOP+ CRCTM- ECTLT- 64bA- UIDRD-
  Link Frequency 1: 200MHz
  Link Error 1: <Prot- <Ovfl- <EOC- CTLTm-
  Link Frequency Capability 1: 200MHz- 300MHz- 400MHz- 500MHz- 600MHz- 800MHz- 1.0GHz- 1.2GHz- 1.4GHz- 1.6GHz- Vend-
  Error Handling: PFlE+ OFlE+ PFE- OFE- EOCFE- RFE- CRCFE- SERRFE- CF- RE- PNFE- ONFE- EOCNFE- RNFE- CRCNFE- SERRNFE-
  Prefetchable memory behind bridge Upper: 00-00
  Bus Number: 00
 Capabilities: [e0] HyperTransport: MSI Mapping Enable- Fixed-
  Mapping Address Base: 00000000fee00000

00:0a.0 ISA bridge [0601]: nVidia Corporation MCP51 LPC Bridge [10de:0260] (rev a3)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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

00:0a.1 SMBus [0c05]: nVidia Corporation MCP51 SMBus [10de:0264] (rev a3)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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-
 Interrupt: pin A routed to IRQ 255
 Region 4: I/O ports at 4c00 [size=64]
 Region 5: I/O ports at 4c40 [size=64]
 Capabilities: [44] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold+)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Kernel driver in use: nForce2_smbus
 Kernel modules: i2c-nforce2

00:0a.2 RAM memory [0500]: nVidia Corporation MCP51 Memory Controller 0 [10de:0272] (rev a3)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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-

00:0b.0 USB Controller [0c03]: nVidia Corporation MCP51 USB Controller [10de:026d] (rev a3) (prog-if 10)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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 (750ns min, 250ns max)
 Interrupt: pin A routed to IRQ 20
 Region 0: Memory at fe02f000 (32-bit, non-prefetchable) [size=4K]
 Capabilities: [44] Power Management version 2
  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Kernel driver in use: ohci_hcd

00:0b.1 USB Controller [0c03]: nVidia Corporation MCP51 USB Controller [10de:026e] (rev a3) (prog-if 20)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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 (750ns min, 250ns max)
 Interrupt: pin B routed to IRQ 21
 Region 0: Memory at fe02e000 (32-bit, non-prefetchable) [size=256]
 Capabilities: [44] Debug port: BAR=1 offset=0098
 Capabilities: [80] Power Management version 2
  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME+
 Kernel driver in use: ehci_hcd

00:0d.0 IDE interface [0101]: nVidia Corporation MCP51 IDE [10de:0265] (rev a1) (prog-if 8a [Master SecP PriP])
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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 (750ns min, 250ns max)
 Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled] [size=8]
 Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled] [size=1]
 Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled] [size=8]
 Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled] [size=1]
 Region 4: I/O ports at f400 [size=16]
 Capabilities: [44] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Kernel driver in use: pata_amd

00:0e.0 IDE interface [0101]: nVidia Corporation MCP51 Serial ATA Controller [10de:0266] (rev a1) (prog-if 85 [Master SecO PriO])
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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 (750ns min, 250ns max)
 Interrupt: pin A routed to IRQ 23
 Region 0: I/O ports at 09f0 [size=8]
 Region 1: I/O ports at 0bf0 [size=4]
 Region 2: I/O ports at 0970 [size=8]
 Region 3: I/O ports at 0b70 [size=4]
 Region 4: I/O ports at e000 [size=16]
 Region 5: Memory at fe02d000 (32-bit, non-prefetchable) [size=4K]
 Capabilities: [44] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [b0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/2 Enable-
  Address: 0000000000000000 Data: 0000
 Capabilities: [cc] HyperTransport: MSI Mapping Enable+ Fixed+
 Kernel driver in use: sata_nv

00:0f.0 IDE interface [0101]: nVidia Corporation MCP51 Serial ATA Controller [10de:0267] (rev a1) (prog-if 85 [Master SecO PriO])
 Subsystem: ASUSTeK Computer Inc. Device [1043:81c0]
 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 (750ns min, 250ns max)
 Interrupt: pin A routed to IRQ 22
 Region 0: I/O ports at 09e0 [size=8]
 Region 1: I/O ports at 0be0 [size=4]
 Region 2: I/O ports at 0960 [size=8]
 Region 3: I/O ports at 0b60 [size=4]
 Region 4: I/O ports at cc00 [size=16]
 Region 5: Memory at fe02c000 (32-bit, non-prefetchable) [size=4K]
 Capabilities: [44] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [b0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/2 Enable-
  Address: 0000000000000000 Data: 0000
 Capabilities: [cc] HyperTransport: MSI Mapping Enable+ Fixed+
 Kernel driver in use: sata_nv

00:10.0 PCI bridge [0604]: nVidia Corporation MCP51 PCI Bridge [10de:026f] (rev a2) (prog-if 01)
 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=04, subordinate=04, sec-latency=128
 I/O behind bridge: 00009000-00009fff
 Memory behind bridge: fdb00000-fdbfffff
 Prefetchable memory behind bridge: fda00000-fdafffff
 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: [b8] Subsystem: Gammagraphx, Inc. (or missing ID) Device [0000:0000]
 Capabilities: [8c] HyperTransport: MSI Mapping Enable+ Fixed-
  Mapping Address Base: 00000000fee00000

00:10.1 Audio device [0403]: nVidia Corporation MCP51 High Definition Audio [10de:026c] (rev a2)
 Subsystem: ASUSTeK Computer Inc. Device [1043:81cb]
 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 (500ns min, 1250ns max)
 Interrupt: pin B routed to IRQ 22
 Region 0: Memory at fe024000 (32-bit, non-prefetchable) [size=16K]
 Capabilities: [44] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold+)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+ Queue=0/0 Enable-
  Address: 0000000000000000 Data: 0000
  Masking: 00000000 Pending: 00000000
 Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+
 Kernel driver in use: HDA Intel
 Kernel modules: snd-hda-intel

00:14.0 Bridge [0680]: nVidia Corporation MCP51 Ethernet Controller [10de:0269] (rev a3)
 Subsystem: ASUSTeK Computer Inc. Device [1043:816a]
 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 (250ns min, 5000ns max)
 Interrupt: pin A routed to IRQ 23
 Region 0: Memory at fe02b000 (32-bit, non-prefetchable) [size=4K]
 Region 1: I/O ports at c800 [size=8]
 Capabilities: [44] Power Management version 2
  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
  Status: D0 PME-Enable+ DSel=0 DScale=0 PME-
 Kernel driver in use: forcedeth
 Kernel modules: forcedeth

00:18.0 Host bridge [0600]: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration [1022:1100]
 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-
 Capabilities: [80] HyperTransport: Host or Secondary Interface
  !!! Possibly incomplete decoding
  Command: WarmRst+ DblEnd-
  Link Control: CFlE- CST- CFE- <LkFail- Init+ EOC- TXO- <CRCErr=0
  Link Config: MLWI=16bit MLWO=16bit LWI=16bit LWO=16bit
  Revision ID: 1.02

00:18.1 Host bridge [0600]: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map [1022:1101]
 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-

00:18.2 Host bridge [0600]: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller [1022:1102]
 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-

00:18.3 Host bridge [0600]: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control [1022:1103]
 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-
 Capabilities: [f0] Secure device <?>
 Kernel driver in use: k8temp
 Kernel modules: k8temp

04:05.0 FireWire (IEEE 1394) [0c00]: Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link) [104c:8023] (prog-if 10)
 Subsystem: ASUSTeK Computer Inc. Device [1043:808b]
 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: 32 (500ns min, 1000ns max), Cache Line Size: 32 bytes
 Interrupt: pin A routed to IRQ 19
 Region 0: Memory at fdbff000 (32-bit, non-prefetchable) [size=2K]
 Region 1: Memory at fdbf8000 (32-bit, non-prefetchable) [size=16K]
 Capabilities: [44] Power Management version 2
  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME+
 Kernel driver in use: ohci1394
 Kernel modules: firewire-ohci, ohci1394

04:08.0 Multimedia video controller [0400]: Brooktree Corporation Bt878 Video Capture [109e:036e] (rev 11)
 Subsystem: ATI Technologies Inc Device [1002:0001]
 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: 32 (4000ns min, 10000ns max)
 Interrupt: pin A routed to IRQ 16
 Region 0: Memory at fdaff000 (32-bit, prefetchable) [size=4K]
 Capabilities: [44] Vital Product Data <?>
 Capabilities: [4c] Power Management version 2
  Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Kernel driver in use: bttv
 Kernel modules: bttv

04:08.1 Multimedia controller [0480]: Brooktree Corporation Bt878 Audio Capture [109e:0878] (rev 11)
 Subsystem: ATI Technologies Inc Device [1002:0001]
 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: 32 (1000ns min, 63750ns max)
 Interrupt: pin A routed to IRQ 16
 Region 0: Memory at fdafe000 (32-bit, prefetchable) [size=4K]
 Capabilities: [44] Vital Product Data <?>
 Capabilities: [4c] Power Management version 2
  Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Kernel driver in use: Bt87x
 Kernel modules: snd-bt87x

04:09.0 Multimedia audio controller [0401]: Creative Labs SB Live! EMU10k1 [1102:0002] (rev 07)
 Subsystem: Creative Labs Device [1102:8027]
 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: 32 (500ns min, 5000ns max)
 Interrupt: pin A routed to IRQ 17
 Region 0: I/O ports at 9c00 [size=32]
 Capabilities: [dc] Power Management version 1
  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Kernel driver in use: EMU10K1_Audigy
 Kernel modules: snd-emu10k1

04:09.1 Input device controller [0980]: Creative Labs SB Live! Game Port [1102:7002] (rev 07)
 Subsystem: Creative Labs Device [1102:0020]
 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: 32
 Region 0: I/O ports at 9800 [size=8]
 Capabilities: [dc] Power Management version 1
  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
 Kernel driver in use: Emu10k1_gameport
 Kernel modules: emu10k1-gp

Bardur Arantsson further confirms this bug still exists in

Linux version 2.6.31-6-generic (buildd@yellow) (gcc version 4.4.1 (Ubuntu 4.4.1-1ubuntu3) ) #25-Ubuntu SMP Fri Aug 14 16:28:28 UTC 2009