(ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt

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* (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt
@ 2012-08-21 13:49 Sami Farin
  2012-09-02 12:20 ` Sami Farin
  0 siblings, 1 reply; 15+ messages in thread
From: Sami Farin @ 2012-08-21 13:49 UTC (permalink / raw)
  To: netdev; +Cc: Sami Farin, netdev

this with 3.6.0-rc2-g6dab7ede+ , x86_64 SMP, e1000e
gcc version 4.7.1 20120813 (Red Hat 4.7.1-7) (GCC) 
motherboard Asus P8Z68-V pro gen3

https://docs.google.com/open?id=0B_EMXtsx7o56UnJqNUNmMjNaSkE
(screencapture, 2.2 MB)

RIP [<ffffffff8109078c>] __lock_acquire.isra.25+0x15f/0xb20

Call Trace:
sb_add
lock_acquire
dump_ipv4_packet
_raw_read_lock_bh
dump_ipv4_packet
dump_ipv4_packet
sb_add
ipt_log_packet
log_tg
ipt_do_table
iptable_filter_hook
nf_iterate
ip_rcv_finish
nf_hook_slow
...

from vmlinux:
   0xffffffff8109075a <+301>:   cmpl   $0x0,0x1691a9f(%rip)        # 0xffffffff82722200 <debug_locks_silent>
   0xffffffff81090761 <+308>:   jne    0xffffffff8109073f <__lock_acquire+274>
   0xffffffff81090763 <+310>:   mov    $0xbd5,%esi
   0xffffffff81090768 <+315>:   mov    $0xffffffff81a4e0c9,%rdi
   0xffffffff8109076f <+322>:   callq  0xffffffff8104761f <warn_slowpath_null>
   0xffffffff81090774 <+327>:   xor    %eax,%eax
   0xffffffff81090776 <+329>:   jmpq   0xffffffff8109093a <__lock_acquire+781>
   0xffffffff8109077b <+334>:   mov    %r12d,%eax
   0xffffffff8109077e <+337>:   mov    0x8(%r14,%rax,8),%rbx
   0xffffffff81090783 <+342>:   test   %rbx,%rbx
   0xffffffff81090786 <+345>:   je     0xffffffff81090682 <__lock_acquire+85>
!! 0xffffffff8109078c <+351>:   lock incl 0x198(%rbx)
   0xffffffff81090793 <+358>:   mov    0x660(%r13),%r15d
   0xffffffff8109079a <+365>:   mov    0xedfa0f(%rip),%r10d        # 0xffffffff81f701b0 <oops_in_progress>
   0xffffffff810907a1 <+372>:   test   %r10d,%r10d
   0xffffffff810907a4 <+375>:   jne    0xffffffff810907b0 <__lock_acquire+387>
   0xffffffff810907a6 <+377>:   cmp    $0x2f,%r15d
   0xffffffff810907aa <+381>:   ja     0xffffffff810909fb <__lock_acquire+974>
   0xffffffff810907b0 <+387>:   sub    $0xffffffff81fb66e0,%rbx
   0xffffffff810907b7 <+394>:   sar    $0x4,%rbx
   0xffffffff810907bb <+398>:   movabs $0xef7bdef7bdef7bdf,%rax
   0xffffffff810907c5 <+408>:   imul   %rax,%rbx
   0xffffffff810907c9 <+412>:   mov    %ebx,%r11d
   0xffffffff810907cc <+415>:   lea    0x1(%rbx),%eax
   0xffffffff810907cf <+418>:   test   %r15d,%r15d
   0xffffffff810907d2 <+421>:   je     0xffffffff81090902 <__lock_acquire+725>
   0xffffffff810907d8 <+427>:   mov    %r15d,%edi

kernel 3.5.0-rc6-g4523e145+ worked ok for over a month..

# ethtool eth0
Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
                                1000baseT/Full 
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
                                1000baseT/Full 
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 2
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: on
        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00000007 (7)
                               drv probe link
        Link detected: yes

# ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: off
tx-checksumming: off
scatter-gather: off
tcp-segmentation-offload: off
udp-fragmentation-offload: off
generic-segmentation-offload: off
generic-receive-offload: off
large-receive-offload: off
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off
receive-hashing: on

-- 
Do what you love because life is too short for anything else.

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt
  2012-08-21 13:49 (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt Sami Farin
@ 2012-09-02 12:20 ` Sami Farin
  2012-09-02 13:28   ` Florian Westphal
  0 siblings, 1 reply; 15+ messages in thread
From: Sami Farin @ 2012-09-02 12:20 UTC (permalink / raw)
  To: Sami Farin; +Cc: netdev, e1000-devel

I get this panic every 1-2 days.
Also with 7a611e69b26069a511d9d5251c6a28af6c521121 (commit before 3.6.0-rc4).

Quite often on reboot (after crash) xfs filesystems are corrupted:
  XFS (sdb7): xlog_recover_process_data: bad clientid 0x10
  XFS (sdb7): log mount/recovery failed: error 5
  XFS (sdb7): log mount failed
  dracut: mount: /dev/sdb7: can't read superblock
  Cannot find init!

xfs_repair -L is needed, and sometimes filesystem is very corrupted,
like google chrome settings gone.

Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
                                1000baseT/Full 
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full 
                                100baseT/Half 100baseT/Full 
                                1000baseT/Full 
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 2
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: off
        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00000007 (7)
                               drv probe link
        Link detected: yes



00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
        Subsystem: ASUSTeK Computer Inc. P8P67 Deluxe Motherboard
        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 <?>
00: 86 80 00 01 06 00 90 20 09 00 00 06 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 4d 84
30: 00 00 00 00 e0 00 00 00 00 00 00 00 00 00 00 00

00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) (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
        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: [88] Subsystem: ASUSTeK Computer Inc. Device 844d
        Capabilities: [80] 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: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee0f00c  Data: 4191
        Capabilities: [a0] 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 #2, Speed 5GT/s, Width x16, ASPM L0s L1, Latency L0 <1us, L1 <4us
                        ClockPM- Surprise- LLActRep- BwNot+
                LnkCtl: ASPM Disabled; 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 #1, PowerLimit 75.000W; 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: Not Supported, TimeoutDis- ARIFwd-
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd-
                LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
                         Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        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=ff
                        Status: NegoPending- InProgress-
        Capabilities: [140 v1] Root Complex Link
                Desc:   PortNumber=02 ComponentID=01 EltType=Config
                Link0:  Desc:   TargetPort=00 TargetComponent=01 AssocRCRB- LinkType=MemMapped LinkValid+
                        Addr:   00000000fed19000
        Kernel driver in use: pcieport
00: 86 80 01 01 07 04 10 00 09 00 04 06 10 00 81 00
10: 00 00 00 00 00 00 00 00 00 01 01 00 f0 00 00 00
20: f0 ff 00 00 f1 ff 01 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 88 00 00 00 00 00 00 00 0b 01 10 00

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device 844d
        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 53
        Region 0: Memory at f7400000 (64-bit, non-prefetchable) [size=4M]
        Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Region 4: I/O ports at f000 [size=64]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee0f00c  Data: 41a2
        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
00: 86 80 12 01 07 04 90 00 09 00 00 03 00 00 00 00
10: 04 00 40 f7 00 00 00 00 0c 00 00 e0 00 00 00 00
20: 01 f0 00 00 00 00 00 00 00 00 00 00 43 10 4d 84
30: 00 00 00 00 90 00 00 00 00 00 00 00 0b 01 00 00

00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
        Subsystem: ASUSTeK Computer Inc. P8P67 Deluxe Motherboard
        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 54
        Region 0: Memory at f7d2c000 (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: 41b2
        Kernel driver in use: mei
00: 86 80 3a 1c 06 04 10 00 04 00 80 07 00 00 80 00
10: 04 c0 d2 f7 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 4d 84
30: 00 00 00 00 50 00 00 00 00 00 00 00 0b 01 00 00

00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05)
        Subsystem: ASUSTeK Computer Inc. P8P67 Deluxe Motherboard
        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 55
        Region 0: Memory at f7d00000 (32-bit, non-prefetchable) [size=128K]
        Region 1: Memory at f7d29000 (32-bit, non-prefetchable) [size=4K]
        Region 2: I/O ports at f080 [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: 00000000fee0f00c  Data: 4163
        Capabilities: [e0] PCI Advanced Features
                AFCap: TP+ FLR+
                AFCtrl: FLR-
                AFStatus: TP-
        Kernel driver in use: e1000e
00: 86 80 03 15 07 04 10 00 05 00 00 02 00 00 00 00
10: 00 00 d0 f7 00 90 d2 f7 81 f0 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 9c 84
30: 00 00 00 00 c8 00 00 00 00 00 00 00 03 01 00 00

00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
        Subsystem: ASUSTeK Computer Inc. P8P67 Deluxe Motherboard
        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 f7d28000 (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: 86 80 2d 1c 06 00 90 02 05 20 03 0c 00 00 00 00
10: 00 80 d2 f7 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 4d 84
30: 00 00 00 00 50 00 00 00 00 00 00 00 0b 01 00 00

00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
        Subsystem: ASUSTeK Computer Inc. Device 8410
        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 56
        Region 0: Memory at f7d20000 (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: 00000000fee0f00c  Data: 4143
        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
00: 86 80 20 1c 06 04 10 00 05 00 03 04 10 00 00 00
10: 04 00 d2 f7 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 10 84
30: 00 00 00 00 50 00 00 00 00 00 00 00 04 01 00 00

00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) (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: dfb00000-dfcfffff
        Prefetchable memory behind bridge: 00000000dfd00000-00000000dfefffff
        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 Disabled; 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 0.000W; 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: 2.5GT/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, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: ASUSTeK Computer Inc. Device 844d
        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: 86 80 10 1c 07 00 10 00 b5 00 04 06 10 00 81 00
10: 00 00 00 00 00 00 00 00 00 02 02 00 20 20 00 00
20: b0 df c0 df d1 df e1 df 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 0b 01 10 00

00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5) (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=03, subordinate=03, sec-latency=0
        Memory behind bridge: f7c00000-f7cfffff
        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 #2, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
                        ClockPM- Surprise- LLActRep+ BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
                        Slot #1, 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: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: ASUSTeK Computer Inc. Device 844d
        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: 86 80 12 1c 07 00 10 00 b5 00 04 06 10 00 81 00
10: 00 00 00 00 00 00 00 00 00 03 03 00 f0 00 00 00
20: c0 f7 c0 f7 f1 ff 01 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 0b 02 10 00

00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5) (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=04, subordinate=04, sec-latency=0
        I/O behind bridge: 0000e000-0000efff
        Memory behind bridge: f7b00000-f7bfffff
        Prefetchable memory behind bridge: 00000000dff00000-00000000dfffffff
        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 #4, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
                        ClockPM- Surprise- 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- Surprise-
                        Slot #3, 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, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: ASUSTeK Computer Inc. Device 844d
        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: 86 80 16 1c 07 00 10 00 b5 00 04 06 10 00 81 00
10: 00 00 00 00 00 00 00 00 00 04 04 00 e0 e0 00 00
20: b0 f7 b0 f7 f1 df f1 df 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 0a 04 10 00

00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5) (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=05, subordinate=05, sec-latency=0
        Memory behind bridge: f7a00000-f7afffff
        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 #5, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
                        ClockPM- Surprise- LLActRep+ BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
                        Slot #4, 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: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: ASUSTeK Computer Inc. Device 844d
        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: 86 80 18 1c 07 00 10 00 b5 00 04 06 10 00 81 00
10: 00 00 00 00 00 00 00 00 00 05 05 00 f0 00 00 00
20: a0 f7 a0 f7 f1 ff 01 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 0b 01 10 00

00:1c.6 PCI bridge: Intel Corporation 82801 PCI Bridge (rev b5) (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, Cache Line Size: 64 bytes
        Bus: primary=00, secondary=06, subordinate=07, sec-latency=0
        I/O behind bridge: 0000d000-0000dfff
        Memory behind bridge: f7900000-f79fffff
        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 #7, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <1us, L1 <4us
                        ClockPM- Surprise- 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- Surprise-
                        Slot #6, 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, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: ASUSTeK Computer Inc. Device 844d
        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-
00: 86 80 4e 24 07 00 10 00 b5 01 04 06 10 00 81 00
10: 00 00 00 00 00 00 00 00 00 06 07 00 d0 d0 00 20
20: 90 f7 90 f7 f1 ff 01 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 05 03 10 00

00:1c.7 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 8 (rev b5) (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=08, subordinate=08, sec-latency=0
        I/O behind bridge: 0000c000-0000cfff
        Memory behind bridge: f7800000-f78fffff
        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 #8, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
                        ClockPM- Surprise- LLActRep+ BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
                        Slot #7, 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: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
                Address: 00000000  Data: 0000
        Capabilities: [90] Subsystem: ASUSTeK Computer Inc. Device 844d
        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: 86 80 1e 1c 07 00 10 00 b5 00 04 06 10 00 81 00
10: 00 00 00 00 00 00 00 00 00 08 08 00 c0 c0 00 00
20: 80 f7 80 f7 f1 ff 01 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 0a 04 10 00

00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
        Subsystem: ASUSTeK Computer Inc. P8P67 Deluxe Motherboard
        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 23
        Region 0: Memory at f7d27000 (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: 86 80 26 1c 06 00 90 02 05 20 03 0c 00 00 00 00
10: 00 70 d2 f7 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 4d 84
30: 00 00 00 00 50 00 00 00 00 00 00 00 0a 01 00 00

00:1f.0 ISA bridge: Intel Corporation Z68 Express Chipset Family LPC Controller (rev 05)
        Subsystem: ASUSTeK Computer Inc. Device 844d
        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: 86 80 44 1c 07 00 10 02 05 00 01 06 00 00 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 4d 84
30: 00 00 00 00 e0 00 00 00 00 00 00 00 00 00 00 00

00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
        Subsystem: ASUSTeK Computer Inc. P8P67 Deluxe Motherboard
        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 B routed to IRQ 41
        Region 0: I/O ports at f0d0 [size=8]
        Region 1: I/O ports at f0c0 [size=4]
        Region 2: I/O ports at f0b0 [size=8]
        Region 3: I/O ports at f0a0 [size=4]
        Region 4: I/O ports at f060 [size=32]
        Region 5: Memory at f7d26000 (32-bit, non-prefetchable) [size=2K]
        Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee0f00c  Data: 41a1
        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: 86 80 02 1c 07 04 b0 02 05 01 06 01 00 00 00 00
10: d1 f0 00 00 c1 f0 00 00 b1 f0 00 00 a1 f0 00 00
20: 61 f0 00 00 00 60 d2 f7 00 00 00 00 43 10 4d 84
30: 00 00 00 00 80 00 00 00 00 00 00 00 0a 02 00 00

00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
        Subsystem: ASUSTeK Computer Inc. P8P67 Deluxe Motherboard
        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 18
        Region 0: Memory at f7d25000 (64-bit, non-prefetchable) [size=256]
        Region 4: I/O ports at f040 [size=32]
00: 86 80 22 1c 03 00 80 02 05 00 05 0c 00 00 00 00
10: 04 50 d2 f7 00 00 00 00 00 00 00 00 00 00 00 00
20: 41 f0 00 00 00 00 00 00 00 00 00 00 43 10 4d 84
30: 00 00 00 00 00 00 00 00 00 00 00 00 05 03 00 00

03:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller (prog-if 30 [XHCI])
        Subsystem: ASUSTeK Computer Inc. Device 8488
        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 17
        Region 0: Memory at f7c00000 (64-bit, non-prefetchable) [size=32K]
        Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [68] MSI-X: Enable+ Count=8 Masked-
                Vector table: BAR=0 offset=00002000
                PBA: BAR=0 offset=00002080
        Capabilities: [78] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0-,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [80] Express (v2) Legacy Endpoint, MSI 00
                DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <64ns, L1 <2us
                        ExtTag- AttnBtn- AttnInd- PwrInd- 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 5GT/s, Width x1, ASPM L0s L1, Latency L0 unlimited, L1 unlimited
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Not Supported, TimeoutDis-
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
                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: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        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-
        Kernel driver in use: xhci_hcd
00: 21 1b 42 10 06 04 10 00 00 30 03 0c 10 00 00 00
10: 04 00 c0 f7 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 88 84
30: 00 00 00 00 50 00 00 00 00 00 00 00 0b 01 00 00

04:00.0 SATA controller: JMicron Technology Corp. JMB362 SATA Controller (rev 10) (prog-if 01 [AHCI 1.0])
        Subsystem: ASUSTeK Computer Inc. P8P67 Deluxe Motherboard
        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 19
        Region 0: I/O ports at e040 [size=8]
        Region 1: I/O ports at e030 [size=4]
        Region 2: I/O ports at e020 [size=8]
        Region 3: I/O ports at e010 [size=4]
        Region 4: I/O ports at e000 [size=16]
        Region 5: Memory at f7b10000 (32-bit, non-prefetchable) [size=512]
        [virtual] Expansion ROM at dff00000 [disabled] [size=64K]
        Capabilities: [8c] 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: [50] Express (v1) Legacy Endpoint, MSI 00
                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
                        ExtTag- AttnBtn- AttnInd- PwrInd- 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 x1, ASPM L0s L1, Latency L0 <1us, L1 <16us
                        ClockPM- Surprise- 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-
        Kernel driver in use: ahci
00: 7b 19 62 23 07 00 10 00 10 01 06 01 10 00 00 00
10: 41 e0 00 00 31 e0 00 00 21 e0 00 00 11 e0 00 00
20: 01 e0 00 00 00 00 b1 f7 00 00 00 00 43 10 60 84
30: 00 00 00 00 8c 00 00 00 00 00 00 00 0a 01 00 00

05:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller (prog-if 30 [XHCI])
        Subsystem: ASUSTeK Computer Inc. Device 8488
        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 16
        Region 0: Memory at f7a00000 (64-bit, non-prefetchable) [size=32K]
        Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [68] MSI-X: Enable+ Count=8 Masked-
                Vector table: BAR=0 offset=00002000
                PBA: BAR=0 offset=00002080
        Capabilities: [78] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0-,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [80] Express (v2) Legacy Endpoint, MSI 00
                DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <64ns, L1 <2us
                        ExtTag- AttnBtn- AttnInd- PwrInd- 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 5GT/s, Width x1, ASPM L0s L1, Latency L0 unlimited, L1 unlimited
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Not Supported, TimeoutDis-
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
                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: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        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-
        Kernel driver in use: xhci_hcd
00: 21 1b 42 10 06 04 10 00 00 30 03 0c 10 00 00 00
10: 04 00 a0 f7 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 88 84
30: 00 00 00 00 50 00 00 00 00 00 00 00 0b 01 00 00

06:00.0 PCI bridge: ASMedia Technology Inc. ASM108x PCIe to PCI Bridge Controller (rev 01) (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, Cache Line Size: 64 bytes
        Bus: primary=06, secondary=07, subordinate=07, sec-latency=32
        I/O behind bridge: 0000d000-0000dfff
        Memory behind bridge: f7900000-f79fffff
        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: [c0] Subsystem: ASMedia Technology Inc. ASM108x PCIe to PCI Bridge Controller
00: 21 1b 80 10 07 00 10 00 01 01 04 06 10 00 01 00
10: 00 00 00 00 00 00 00 00 06 07 07 20 d1 d1 20 20
20: 90 f7 90 f7 f1 ff 01 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 c0 00 00 00 00 00 00 00 05 01 10 00

07:02.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev c0) (prog-if 10 [OHCI])
        Subsystem: ASUSTeK Computer Inc. M4A series motherboard
        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 (8000ns max), Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 17
        Region 0: Memory at f7900000 (32-bit, non-prefetchable) [size=2K]
        Region 1: I/O ports at d000 [size=128]
        Capabilities: [50] 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: firewire_ohci
00: 06 11 44 30 07 00 10 02 c0 10 00 0c 10 20 00 00
10: 00 00 90 f7 01 d0 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 43 10 fe 81
30: 00 00 00 00 50 00 00 00 00 00 00 00 0b 01 00 20

08:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9172 SATA 6Gb/s Controller (rev 11) (prog-if 01 [AHCI 1.0])
        Subsystem: ASUSTeK Computer Inc. Device 8477
        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 42
        Region 0: I/O ports at c040 [size=8]
        Region 1: I/O ports at c030 [size=4]
        Region 2: I/O ports at c020 [size=8]
        Region 3: I/O ports at c010 [size=4]
        Region 4: I/O ports at c000 [size=16]
        Region 5: Memory at f7810000 (32-bit, non-prefetchable) [size=512]
        Expansion ROM at f7800000 [disabled] [size=64K]
        Capabilities: [40] 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: [50] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee0f00c  Data: 41b1
        Capabilities: [70] Express (v2) Legacy Endpoint, MSI 00
                DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <1us, L1 <8us
                        ExtTag- AttnBtn- AttnInd- PwrInd- 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 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <64us
                        ClockPM- Surprise- LLActRep- BwNot-
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Not Supported, TimeoutDis+
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
                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: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [100 v1] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
                AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
        Kernel driver in use: ahci
00: 4b 1b 72 91 07 04 10 00 11 01 06 01 10 00 00 00
10: 41 c0 00 00 31 c0 00 00 21 c0 00 00 11 c0 00 00
20: 01 c0 00 00 00 00 81 f7 00 00 00 00 43 10 77 84
30: 00 00 80 f7 40 00 00 00 00 00 00 00 0a 01 00 00



On Tue, Aug 21, 2012 at 16:49:21 +0300, Sami Farin wrote:
> this with 3.6.0-rc2-g6dab7ede+ , x86_64 SMP, e1000e
> gcc version 4.7.1 20120813 (Red Hat 4.7.1-7) (GCC) 
> motherboard Asus P8Z68-V pro gen3
> 
> https://docs.google.com/open?id=0B_EMXtsx7o56UnJqNUNmMjNaSkE
> (screencapture, 2.2 MB)
> 
> RIP [<ffffffff8109078c>] __lock_acquire.isra.25+0x15f/0xb20
> 
> Call Trace:
> sb_add
> lock_acquire
> dump_ipv4_packet
> _raw_read_lock_bh
> dump_ipv4_packet
> dump_ipv4_packet
> sb_add
> ipt_log_packet
> log_tg
> ipt_do_table
> iptable_filter_hook
> nf_iterate
> ip_rcv_finish
> nf_hook_slow
> ...
> 
> from vmlinux:
>    0xffffffff8109075a <+301>:   cmpl   $0x0,0x1691a9f(%rip)        # 0xffffffff82722200 <debug_locks_silent>
>    0xffffffff81090761 <+308>:   jne    0xffffffff8109073f <__lock_acquire+274>
>    0xffffffff81090763 <+310>:   mov    $0xbd5,%esi
>    0xffffffff81090768 <+315>:   mov    $0xffffffff81a4e0c9,%rdi
>    0xffffffff8109076f <+322>:   callq  0xffffffff8104761f <warn_slowpath_null>
>    0xffffffff81090774 <+327>:   xor    %eax,%eax
>    0xffffffff81090776 <+329>:   jmpq   0xffffffff8109093a <__lock_acquire+781>
>    0xffffffff8109077b <+334>:   mov    %r12d,%eax
>    0xffffffff8109077e <+337>:   mov    0x8(%r14,%rax,8),%rbx
>    0xffffffff81090783 <+342>:   test   %rbx,%rbx
>    0xffffffff81090786 <+345>:   je     0xffffffff81090682 <__lock_acquire+85>
> !! 0xffffffff8109078c <+351>:   lock incl 0x198(%rbx)
>    0xffffffff81090793 <+358>:   mov    0x660(%r13),%r15d
>    0xffffffff8109079a <+365>:   mov    0xedfa0f(%rip),%r10d        # 0xffffffff81f701b0 <oops_in_progress>
>    0xffffffff810907a1 <+372>:   test   %r10d,%r10d
>    0xffffffff810907a4 <+375>:   jne    0xffffffff810907b0 <__lock_acquire+387>
>    0xffffffff810907a6 <+377>:   cmp    $0x2f,%r15d
>    0xffffffff810907aa <+381>:   ja     0xffffffff810909fb <__lock_acquire+974>
>    0xffffffff810907b0 <+387>:   sub    $0xffffffff81fb66e0,%rbx
>    0xffffffff810907b7 <+394>:   sar    $0x4,%rbx
>    0xffffffff810907bb <+398>:   movabs $0xef7bdef7bdef7bdf,%rax
>    0xffffffff810907c5 <+408>:   imul   %rax,%rbx
>    0xffffffff810907c9 <+412>:   mov    %ebx,%r11d
>    0xffffffff810907cc <+415>:   lea    0x1(%rbx),%eax
>    0xffffffff810907cf <+418>:   test   %r15d,%r15d
>    0xffffffff810907d2 <+421>:   je     0xffffffff81090902 <__lock_acquire+725>
>    0xffffffff810907d8 <+427>:   mov    %r15d,%edi
> 
> kernel 3.5.0-rc6-g4523e145+ worked ok for over a month..
> 
> # ethtool eth0
> Settings for eth0:
>         Supported ports: [ TP ]
>         Supported link modes:   10baseT/Half 10baseT/Full 
>                                 100baseT/Half 100baseT/Full 
>                                 1000baseT/Full 
>         Supported pause frame use: No
>         Supports auto-negotiation: Yes
>         Advertised link modes:  10baseT/Half 10baseT/Full 
>                                 100baseT/Half 100baseT/Full 
>                                 1000baseT/Full 
>         Advertised pause frame use: No
>         Advertised auto-negotiation: Yes
>         Speed: 100Mb/s
>         Duplex: Full
>         Port: Twisted Pair
>         PHYAD: 2
>         Transceiver: internal
>         Auto-negotiation: on
>         MDI-X: on
>         Supports Wake-on: pumbg
>         Wake-on: g
>         Current message level: 0x00000007 (7)
>                                drv probe link
>         Link detected: yes
> 
> # ethtool -k eth0
> Offload parameters for eth0:
> rx-checksumming: off
> tx-checksumming: off
> scatter-gather: off
> tcp-segmentation-offload: off
> udp-fragmentation-offload: off
> generic-segmentation-offload: off
> generic-receive-offload: off
> large-receive-offload: off
> rx-vlan-offload: on
> tx-vlan-offload: on
> ntuple-filters: off
> receive-hashing: on
> 
> -- 
> Do what you love because life is too short for anything else.
> 

-- 
Do what you love because life is too short for anything else.

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt
  2012-09-02 12:20 ` Sami Farin
@ 2012-09-02 13:28   ` Florian Westphal
  2012-09-02 13:45     ` Sami Farin
  2012-09-02 22:53     ` Eric Dumazet
  0 siblings, 2 replies; 15+ messages in thread
From: Florian Westphal @ 2012-09-02 13:28 UTC (permalink / raw)
  To: Sami Farin, netdev, e1000-devel

Sami Farin <hvtaifwkbgefbaei@gmail.com> wrote:
> I get this panic every 1-2 days.
> Also with 7a611e69b26069a511d9d5251c6a28af6c521121 (commit before 3.6.0-rc4).

Could you please post iptables-save output?
My guess is you're using NFLOG in INPUT?

If so, I bet its caused by the tcp early demux stuff.
Does that crash go away with ip_early_demux sysctl off?

My guess is its assigning skb->sk with TIMEWAIT sockets, which
would explain the crash.

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt
  2012-09-02 13:28   ` Florian Westphal
@ 2012-09-02 13:45     ` Sami Farin
  2012-09-02 22:53     ` Eric Dumazet
  1 sibling, 0 replies; 15+ messages in thread
From: Sami Farin @ 2012-09-02 13:45 UTC (permalink / raw)
  To: Florian Westphal; +Cc: Sami Farin, netdev, e1000-devel

On Sun, Sep 02, 2012 at 15:28:34 +0200, Florian Westphal wrote:
> Sami Farin <hvtaifwkbgefbaei@gmail.com> wrote:
> > I get this panic every 1-2 days.
> > Also with 7a611e69b26069a511d9d5251c6a28af6c521121 (commit before 3.6.0-rc4).
> 
> Could you please post iptables-save output?
> My guess is you're using NFLOG in INPUT?

I don't have NFLOG but I have some like this
-j LOG --log-tcp-options --log-ip-options --log-uid --log-macdecode
I also have CONFIG_IP_ROUTE_CLASSID=y , using also htb + fq_codel.

using these ipt* modules
ipt_ECN                 1849  1 
ipt_REJECT              2661  12 
iptable_filter          1650  1 
iptable_mangle          1631  1 
iptable_raw             1422  1 
ip_tables              17482  3 iptable_filter,iptable_mangle,iptable_raw
x_tables               20149  26 ip6table_filter,arp_tables,ip6table_mangle,xt_length,ip_tables,xt_tcpudp,arptable_filter,xt_limit,xt_owner,xt_state,xt_connlimit,xt_conntrack,xt_NOTRACK,xt_LOG,xt_set,xt_hashlimit,xt_multiport,iptable_filter,xt_CLASSIFY,ip6t_rt,xt_connmark,ipt_REJECT,iptable_mangle,ipt_ECN,ip6_tables,iptable_raw

> If so, I bet its caused by the tcp early demux stuff.
> Does that crash go away with ip_early_demux sysctl off?

I try that, thanks!
 
> My guess is its assigning skb->sk with TIMEWAIT sockets, which
> would explain the crash.

-- 
Do what you love because life is too short for anything else.

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt
  2012-09-02 13:28   ` Florian Westphal
  2012-09-02 13:45     ` Sami Farin
@ 2012-09-02 22:53     ` Eric Dumazet
  2012-09-02 23:37       ` Eric Dumazet
                         ` (2 more replies)
  1 sibling, 3 replies; 15+ messages in thread
From: Eric Dumazet @ 2012-09-02 22:53 UTC (permalink / raw)
  To: Florian Westphal; +Cc: Sami Farin, netdev, e1000-devel

From: Eric Dumazet <edumazet@google.com>

On Sun, 2012-09-02 at 15:28 +0200, Florian Westphal wrote:
> Sami Farin <hvtaifwkbgefbaei@gmail.com> wrote:
> > I get this panic every 1-2 days.
> > Also with 7a611e69b26069a511d9d5251c6a28af6c521121 (commit before 3.6.0-rc4).
> 
> Could you please post iptables-save output?
> My guess is you're using NFLOG in INPUT?
> 
> If so, I bet its caused by the tcp early demux stuff.
> Does that crash go away with ip_early_demux sysctl off?
> 
> My guess is its assigning skb->sk with TIMEWAIT sockets, which
> would explain the crash.

Yes thats probably the reason.

First I thought changing demux to not do the lookup of TIMEWAIT slot in
__inet_lookup_established(), then it sounds not optimal to redo the full
lookup for ESTABLISHED sockets later in TCP stack.

So it seems we should fix xt_LOG instead

Thanks Florian !

[PATCH] xt_LOG: take care of timewait sockets

Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
full blown socket.

But with TCP early demux, we can have skb->sk pointing to a timewait
socket.

Diagnosed-by: Florian Westphal <fw@strlen.de>
Reported-by: Sami Farin <hvtaifwkbgefbaei@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 net/netfilter/xt_LOG.c |   33 +++++++++++++++++----------------
 1 file changed, 17 insertions(+), 16 deletions(-)

diff --git a/net/netfilter/xt_LOG.c b/net/netfilter/xt_LOG.c
index ff5f75f..2a4f969 100644
--- a/net/netfilter/xt_LOG.c
+++ b/net/netfilter/xt_LOG.c
@@ -145,6 +145,19 @@ static int dump_tcp_header(struct sbuff *m, const struct sk_buff *skb,
 	return 0;
 }
 
+static void dump_sk_uid_gid(struct sbuff *m, struct sock *sk)
+{
+	if (!sk || sk->sk_state == TCP_TIME_WAIT)
+		return;
+
+	read_lock_bh(&sk->sk_callback_lock);
+	if (sk->sk_socket && sk->sk_socket->file)
+		sb_add(m, "UID=%u GID=%u ",
+			sk->sk_socket->file->f_cred->fsuid,
+			sk->sk_socket->file->f_cred->fsgid);
+	read_unlock_bh(&sk->sk_callback_lock);
+}
+
 /* One level of recursion won't kill us */
 static void dump_ipv4_packet(struct sbuff *m,
 			const struct nf_loginfo *info,
@@ -361,14 +374,8 @@ static void dump_ipv4_packet(struct sbuff *m,
 	}
 
 	/* Max length: 15 "UID=4294967295 " */
-	if ((logflags & XT_LOG_UID) && !iphoff && skb->sk) {
-		read_lock_bh(&skb->sk->sk_callback_lock);
-		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
-			sb_add(m, "UID=%u GID=%u ",
-				skb->sk->sk_socket->file->f_cred->fsuid,
-				skb->sk->sk_socket->file->f_cred->fsgid);
-		read_unlock_bh(&skb->sk->sk_callback_lock);
-	}
+	if ((logflags & XT_LOG_UID) && !iphoff)
+		dump_sk_uid_gid(m, skb->sk);
 
 	/* Max length: 16 "MARK=0xFFFFFFFF " */
 	if (!iphoff && skb->mark)
@@ -717,14 +724,8 @@ static void dump_ipv6_packet(struct sbuff *m,
 	}
 
 	/* Max length: 15 "UID=4294967295 " */
-	if ((logflags & XT_LOG_UID) && recurse && skb->sk) {
-		read_lock_bh(&skb->sk->sk_callback_lock);
-		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
-			sb_add(m, "UID=%u GID=%u ",
-				skb->sk->sk_socket->file->f_cred->fsuid,
-				skb->sk->sk_socket->file->f_cred->fsgid);
-		read_unlock_bh(&skb->sk->sk_callback_lock);
-	}
+	if ((logflags & XT_LOG_UID) && recurse)
+		dump_sk_uid_gid(m, skb->sk);
 
 	/* Max length: 16 "MARK=0xFFFFFFFF " */
 	if (!recurse && skb->mark)

^ permalink raw reply related	[flat|nested] 15+ messages in thread

* Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt
  2012-09-02 22:53     ` Eric Dumazet
@ 2012-09-02 23:37       ` Eric Dumazet
  2012-09-02 23:48       ` [PATCH v2] netfilter: take care of timewait sockets Eric Dumazet
  2012-09-10  5:02       ` (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt Jan Engelhardt
  2 siblings, 0 replies; 15+ messages in thread
From: Eric Dumazet @ 2012-09-02 23:37 UTC (permalink / raw)
  To: Florian Westphal; +Cc: Sami Farin, netdev, e1000-devel

On Mon, 2012-09-03 at 00:53 +0200, Eric Dumazet wrote:

> First I thought changing demux to not do the lookup of TIMEWAIT slot in
> __inet_lookup_established(), then it sounds not optimal to redo the full
> lookup for ESTABLISHED sockets later in TCP stack.
> 
> So it seems we should fix xt_LOG instead
> 
> Thanks Florian !
> 
> [PATCH] xt_LOG: take care of timewait sockets
> 
> Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
> full blown socket.
> 
> But with TCP early demux, we can have skb->sk pointing to a timewait
> socket.

Seems other fixes are needed, for example in nfnetlink_log.c

I'll send a v2



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^ permalink raw reply	[flat|nested] 15+ messages in thread

* [PATCH v2] netfilter: take care of timewait sockets
  2012-09-02 22:53     ` Eric Dumazet
  2012-09-02 23:37       ` Eric Dumazet
@ 2012-09-02 23:48       ` Eric Dumazet
  2012-09-03  7:47         ` Florian Westphal
                           ` (2 more replies)
  2012-09-10  5:02       ` (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt Jan Engelhardt
  2 siblings, 3 replies; 15+ messages in thread
From: Eric Dumazet @ 2012-09-02 23:48 UTC (permalink / raw)
  To: Florian Westphal; +Cc: Sami Farin, netdev, e1000-devel

Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
full blown socket.

But with TCP early demux, we can have skb->sk pointing to a timewait
socket.

Same fix is needed in netfnetlink_log

Diagnosed-by: Florian Westphal <fw@strlen.de>
Reported-by: Sami Farin <hvtaifwkbgefbaei@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 net/netfilter/nfnetlink_log.c |   14 +++++++------
 net/netfilter/xt_LOG.c        |   33 ++++++++++++++++----------------
 2 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index 14e2f39..5cfb5be 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -381,6 +381,7 @@ __build_packet_message(struct nfulnl_instance *inst,
 	struct nlmsghdr *nlh;
 	struct nfgenmsg *nfmsg;
 	sk_buff_data_t old_tail = inst->skb->tail;
+	struct sock *sk;
 
 	nlh = nlmsg_put(inst->skb, 0, 0,
 			NFNL_SUBSYS_ULOG << 8 | NFULNL_MSG_PACKET,
@@ -499,18 +500,19 @@ __build_packet_message(struct nfulnl_instance *inst,
 	}
 
 	/* UID */
-	if (skb->sk) {
-		read_lock_bh(&skb->sk->sk_callback_lock);
-		if (skb->sk->sk_socket && skb->sk->sk_socket->file) {
-			struct file *file = skb->sk->sk_socket->file;
+	sk = skb->sk;
+	if (sk && sk->sk_state != TCP_TIME_WAIT) {
+		read_lock_bh(&sk->sk_callback_lock);
+		if (sk->sk_socket && sk->sk_socket->file) {
+			struct file *file = sk->sk_socket->file;
 			__be32 uid = htonl(file->f_cred->fsuid);
 			__be32 gid = htonl(file->f_cred->fsgid);
-			read_unlock_bh(&skb->sk->sk_callback_lock);
+			read_unlock_bh(&sk->sk_callback_lock);
 			if (nla_put_be32(inst->skb, NFULA_UID, uid) ||
 			    nla_put_be32(inst->skb, NFULA_GID, gid))
 				goto nla_put_failure;
 		} else
-			read_unlock_bh(&skb->sk->sk_callback_lock);
+			read_unlock_bh(&sk->sk_callback_lock);
 	}
 
 	/* local sequence number */
diff --git a/net/netfilter/xt_LOG.c b/net/netfilter/xt_LOG.c
index ff5f75f..2a4f969 100644
--- a/net/netfilter/xt_LOG.c
+++ b/net/netfilter/xt_LOG.c
@@ -145,6 +145,19 @@ static int dump_tcp_header(struct sbuff *m, const struct sk_buff *skb,
 	return 0;
 }
 
+static void dump_sk_uid_gid(struct sbuff *m, struct sock *sk)
+{
+	if (!sk || sk->sk_state == TCP_TIME_WAIT)
+		return;
+
+	read_lock_bh(&sk->sk_callback_lock);
+	if (sk->sk_socket && sk->sk_socket->file)
+		sb_add(m, "UID=%u GID=%u ",
+			sk->sk_socket->file->f_cred->fsuid,
+			sk->sk_socket->file->f_cred->fsgid);
+	read_unlock_bh(&sk->sk_callback_lock);
+}
+
 /* One level of recursion won't kill us */
 static void dump_ipv4_packet(struct sbuff *m,
 			const struct nf_loginfo *info,
@@ -361,14 +374,8 @@ static void dump_ipv4_packet(struct sbuff *m,
 	}
 
 	/* Max length: 15 "UID=4294967295 " */
-	if ((logflags & XT_LOG_UID) && !iphoff && skb->sk) {
-		read_lock_bh(&skb->sk->sk_callback_lock);
-		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
-			sb_add(m, "UID=%u GID=%u ",
-				skb->sk->sk_socket->file->f_cred->fsuid,
-				skb->sk->sk_socket->file->f_cred->fsgid);
-		read_unlock_bh(&skb->sk->sk_callback_lock);
-	}
+	if ((logflags & XT_LOG_UID) && !iphoff)
+		dump_sk_uid_gid(m, skb->sk);
 
 	/* Max length: 16 "MARK=0xFFFFFFFF " */
 	if (!iphoff && skb->mark)
@@ -717,14 +724,8 @@ static void dump_ipv6_packet(struct sbuff *m,
 	}
 
 	/* Max length: 15 "UID=4294967295 " */
-	if ((logflags & XT_LOG_UID) && recurse && skb->sk) {
-		read_lock_bh(&skb->sk->sk_callback_lock);
-		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
-			sb_add(m, "UID=%u GID=%u ",
-				skb->sk->sk_socket->file->f_cred->fsuid,
-				skb->sk->sk_socket->file->f_cred->fsgid);
-		read_unlock_bh(&skb->sk->sk_callback_lock);
-	}
+	if ((logflags & XT_LOG_UID) && recurse)
+		dump_sk_uid_gid(m, skb->sk);
 
 	/* Max length: 16 "MARK=0xFFFFFFFF " */
 	if (!recurse && skb->mark)



------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
E1000-devel mailing list
E1000-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/e1000-devel
To learn more about Intel&#174; Ethernet, visit http://communities.intel.com/community/wired

^ permalink raw reply related	[flat|nested] 15+ messages in thread

* Re: [PATCH v2] netfilter: take care of timewait sockets
  2012-09-02 23:48       ` [PATCH v2] netfilter: take care of timewait sockets Eric Dumazet
@ 2012-09-03  7:47         ` Florian Westphal
  2012-09-03  9:57           ` Eric Dumazet
  2012-09-04  7:55         ` Eric Dumazet
  2012-09-14  9:30         ` Sami Farin
  2 siblings, 1 reply; 15+ messages in thread
From: Florian Westphal @ 2012-09-03  7:47 UTC (permalink / raw)
  To: Eric Dumazet; +Cc: Florian Westphal, Sami Farin, netdev, e1000-devel

Eric Dumazet <eric.dumazet@gmail.com> wrote:
> Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
> full blown socket.
> 
> But with TCP early demux, we can have skb->sk pointing to a timewait
> socket.
> 
> Same fix is needed in netfnetlink_log

Looks good, but IMHO it is very un-intuitive that
skb->sk might be a pointer to an object that is not struct sock (or
a compatible object).

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: [PATCH v2] netfilter: take care of timewait sockets
  2012-09-03  7:47         ` Florian Westphal
@ 2012-09-03  9:57           ` Eric Dumazet
  2012-09-03 17:23             ` David Miller
  0 siblings, 1 reply; 15+ messages in thread
From: Eric Dumazet @ 2012-09-03  9:57 UTC (permalink / raw)
  To: Florian Westphal, David Miller; +Cc: Sami Farin, netdev, e1000-devel

From: Eric Dumazet <edumazet@google.com>

On Mon, 2012-09-03 at 09:47 +0200, Florian Westphal wrote:
> Eric Dumazet <eric.dumazet@gmail.com> wrote:
> > Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
> > full blown socket.
> > 
> > But with TCP early demux, we can have skb->sk pointing to a timewait
> > socket.
> > 
> > Same fix is needed in netfnetlink_log
> 
> Looks good, but IMHO it is very un-intuitive that
> skb->sk might be a pointer to an object that is not struct sock (or
> a compatible object).

Its kind of a compatible object, if all skb->sk users are aware of it.

You are totally right, this is messy, but TCP edemux is a layering
violation helping a bit performance...

sock_edemux() should also be fixed.

David, tell me if you prefer to change TCP demux to avoid timewait,
as I have no strong opinion.

[PATCH] net: sock_edemux() should take care of timewait sockets

sock_edemux() can handle either a regular socket or a timewait socket

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 net/core/sock.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/net/core/sock.c b/net/core/sock.c
index 8f67ced..7f64467 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1523,7 +1523,12 @@ EXPORT_SYMBOL(sock_rfree);
 
 void sock_edemux(struct sk_buff *skb)
 {
-	sock_put(skb->sk);
+	struct sock *sk = skb->sk;
+
+	if (sk->sk_state == TCP_TIME_WAIT)
+		inet_twsk_put(inet_twsk(sk));
+	else
+		sock_put(sk);
 }
 EXPORT_SYMBOL(sock_edemux);
 

^ permalink raw reply related	[flat|nested] 15+ messages in thread

* Re: [PATCH v2] netfilter: take care of timewait sockets
  2012-09-03  9:57           ` Eric Dumazet
@ 2012-09-03 17:23             ` David Miller
  0 siblings, 0 replies; 15+ messages in thread
From: David Miller @ 2012-09-03 17:23 UTC (permalink / raw)
  To: eric.dumazet; +Cc: fw, hvtaifwkbgefbaei, netdev, e1000-devel

From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Mon, 03 Sep 2012 11:57:18 +0200

> David, tell me if you prefer to change TCP demux to avoid timewait,
> as I have no strong opinion.

It would be the stupidest thing ever to do the whole hash lookup
just to throw the result away just because it's a timewait socket.

> [PATCH] net: sock_edemux() should take care of timewait sockets
> 
> sock_edemux() can handle either a regular socket or a timewait socket
> 
> Signed-off-by: Eric Dumazet <edumazet@google.com>

Applied, thanks.

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: [PATCH v2] netfilter: take care of timewait sockets
  2012-09-02 23:48       ` [PATCH v2] netfilter: take care of timewait sockets Eric Dumazet
  2012-09-03  7:47         ` Florian Westphal
@ 2012-09-04  7:55         ` Eric Dumazet
  2012-09-04 16:16           ` David Miller
  2012-09-14  9:30         ` Sami Farin
  2 siblings, 1 reply; 15+ messages in thread
From: Eric Dumazet @ 2012-09-04  7:55 UTC (permalink / raw)
  To: Florian Westphal, David Miller; +Cc: Sami Farin, netdev

On Mon, 2012-09-03 at 01:48 +0200, Eric Dumazet wrote:
> Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
> full blown socket.
> 
> But with TCP early demux, we can have skb->sk pointing to a timewait
> socket.
> 
> Same fix is needed in netfnetlink_log
> 
> Diagnosed-by: Florian Westphal <fw@strlen.de>
> Reported-by: Sami Farin <hvtaifwkbgefbaei@gmail.com>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> ---
>  net/netfilter/nfnetlink_log.c |   14 +++++++------
>  net/netfilter/xt_LOG.c        |   33 ++++++++++++++++----------------
>  2 files changed, 25 insertions(+), 22 deletions(-)
> 
> diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
> index 14e2f39..5cfb5be 100644
> --- a/net/netfilter/nfnetlink_log.c
> +++ b/net/netfilter/nfnetlink_log.c
> @@ -381,6 +381,7 @@ __build_packet_message(struct nfulnl_instance *inst,
>  	struct nlmsghdr *nlh;
>  	struct nfgenmsg *nfmsg;
>  	sk_buff_data_t old_tail = inst->skb->tail;
> +	struct sock *sk;
>  
>  	nlh = nlmsg_put(inst->skb, 0, 0,
>  			NFNL_SUBSYS_ULOG << 8 | NFULNL_MSG_PACKET,
> @@ -499,18 +500,19 @@ __build_packet_message(struct nfulnl_instance *inst,
>  	}
>  
>  	/* UID */
> -	if (skb->sk) {
> -		read_lock_bh(&skb->sk->sk_callback_lock);
> -		if (skb->sk->sk_socket && skb->sk->sk_socket->file) {
> -			struct file *file = skb->sk->sk_socket->file;
> +	sk = skb->sk;
> +	if (sk && sk->sk_state != TCP_TIME_WAIT) {
> +		read_lock_bh(&sk->sk_callback_lock);
> +		if (sk->sk_socket && sk->sk_socket->file) {
> +			struct file *file = sk->sk_socket->file;
>  			__be32 uid = htonl(file->f_cred->fsuid);
>  			__be32 gid = htonl(file->f_cred->fsgid);
> -			read_unlock_bh(&skb->sk->sk_callback_lock);
> +			read_unlock_bh(&sk->sk_callback_lock);
>  			if (nla_put_be32(inst->skb, NFULA_UID, uid) ||
>  			    nla_put_be32(inst->skb, NFULA_GID, gid))
>  				goto nla_put_failure;
>  		} else
> -			read_unlock_bh(&skb->sk->sk_callback_lock);
> +			read_unlock_bh(&sk->sk_callback_lock);
>  	}
>  
>  	/* local sequence number */
> diff --git a/net/netfilter/xt_LOG.c b/net/netfilter/xt_LOG.c
> index ff5f75f..2a4f969 100644
> --- a/net/netfilter/xt_LOG.c
> +++ b/net/netfilter/xt_LOG.c
> @@ -145,6 +145,19 @@ static int dump_tcp_header(struct sbuff *m, const struct sk_buff *skb,
>  	return 0;
>  }
>  
> +static void dump_sk_uid_gid(struct sbuff *m, struct sock *sk)
> +{
> +	if (!sk || sk->sk_state == TCP_TIME_WAIT)
> +		return;
> +
> +	read_lock_bh(&sk->sk_callback_lock);
> +	if (sk->sk_socket && sk->sk_socket->file)
> +		sb_add(m, "UID=%u GID=%u ",
> +			sk->sk_socket->file->f_cred->fsuid,
> +			sk->sk_socket->file->f_cred->fsgid);
> +	read_unlock_bh(&sk->sk_callback_lock);
> +}
> +
>  /* One level of recursion won't kill us */
>  static void dump_ipv4_packet(struct sbuff *m,
>  			const struct nf_loginfo *info,
> @@ -361,14 +374,8 @@ static void dump_ipv4_packet(struct sbuff *m,
>  	}
>  
>  	/* Max length: 15 "UID=4294967295 " */
> -	if ((logflags & XT_LOG_UID) && !iphoff && skb->sk) {
> -		read_lock_bh(&skb->sk->sk_callback_lock);
> -		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
> -			sb_add(m, "UID=%u GID=%u ",
> -				skb->sk->sk_socket->file->f_cred->fsuid,
> -				skb->sk->sk_socket->file->f_cred->fsgid);
> -		read_unlock_bh(&skb->sk->sk_callback_lock);
> -	}
> +	if ((logflags & XT_LOG_UID) && !iphoff)
> +		dump_sk_uid_gid(m, skb->sk);
>  
>  	/* Max length: 16 "MARK=0xFFFFFFFF " */
>  	if (!iphoff && skb->mark)
> @@ -717,14 +724,8 @@ static void dump_ipv6_packet(struct sbuff *m,
>  	}
>  
>  	/* Max length: 15 "UID=4294967295 " */
> -	if ((logflags & XT_LOG_UID) && recurse && skb->sk) {
> -		read_lock_bh(&skb->sk->sk_callback_lock);
> -		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
> -			sb_add(m, "UID=%u GID=%u ",
> -				skb->sk->sk_socket->file->f_cred->fsuid,
> -				skb->sk->sk_socket->file->f_cred->fsgid);
> -		read_unlock_bh(&skb->sk->sk_callback_lock);
> -	}
> +	if ((logflags & XT_LOG_UID) && recurse)
> +		dump_sk_uid_gid(m, skb->sk);
>  
>  	/* Max length: 16 "MARK=0xFFFFFFFF " */
>  	if (!recurse && skb->mark)
> 

Hi David

This patch was marked "Not applicable" in Patchwork
( http://patchwork.ozlabs.org/patch/181275/ )

It seems a mistake, since it should be applied ?

Tell me if I should resend it

Thanks

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: [PATCH v2] netfilter: take care of timewait sockets
  2012-09-04  7:55         ` Eric Dumazet
@ 2012-09-04 16:16           ` David Miller
  0 siblings, 0 replies; 15+ messages in thread
From: David Miller @ 2012-09-04 16:16 UTC (permalink / raw)
  To: eric.dumazet; +Cc: fw, hvtaifwkbgefbaei, netdev

From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue, 04 Sep 2012 09:55:25 +0200

> This patch was marked "Not applicable" in Patchwork
> ( http://patchwork.ozlabs.org/patch/181275/ )
> 
> It seems a mistake, since it should be applied ?

Not applicable can mean "doesn't go through my tree"

This is netfilter stuff, so please submit it via the
netfilter folks :-)

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: [PATCH v2] netfilter: take care of timewait sockets
  2012-09-02 23:48       ` [PATCH v2] netfilter: take care of timewait sockets Eric Dumazet
  2012-09-03  7:47         ` Florian Westphal
  2012-09-04  7:55         ` Eric Dumazet
@ 2012-09-14  9:30         ` Sami Farin
  2 siblings, 0 replies; 15+ messages in thread
From: Sami Farin @ 2012-09-14  9:30 UTC (permalink / raw)
  To: Eric Dumazet; +Cc: Florian Westphal, Sami Farin, netdev

On Mon, Sep 03, 2012 at 01:48:04 +0200, Eric Dumazet wrote:
> Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
> full blown socket.
> 
> But with TCP early demux, we can have skb->sk pointing to a timewait
> socket.
> 
> Same fix is needed in netfnetlink_log

with ip_early_demux=0 and without these patches I did not get panics for
7 days, and with the patches and ip_early_demux=1 it has worked OK for 5 days,
thanks.

-- 
Do what you love because life is too short for anything else.

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt
  2012-09-02 22:53     ` Eric Dumazet
  2012-09-02 23:37       ` Eric Dumazet
  2012-09-02 23:48       ` [PATCH v2] netfilter: take care of timewait sockets Eric Dumazet
@ 2012-09-10  5:02       ` Jan Engelhardt
  2012-09-10  6:00         ` Eric Dumazet
  2 siblings, 1 reply; 15+ messages in thread
From: Jan Engelhardt @ 2012-09-10  5:02 UTC (permalink / raw)
  To: Eric Dumazet; +Cc: Florian Westphal, Sami Farin, netdev, e1000-devel


On Monday 2012-09-03 00:53, Eric Dumazet wrote:
>[PATCH] xt_LOG: take care of timewait sockets
>
>Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
>full blown socket.
>
>But with TCP early demux, we can have skb->sk pointing to a timewait
>socket.
>
>+static void dump_sk_uid_gid(struct sbuff *m, struct sock *sk)
>+{
>+	if (!sk || sk->sk_state == TCP_TIME_WAIT)
>+		return;
>+
>+	read_lock_bh(&sk->sk_callback_lock);
>+	if (sk->sk_socket && sk->sk_socket->file)
>+		sb_add(m, "UID=%u GID=%u ",
>+			sk->sk_socket->file->f_cred->fsuid,
>+			sk->sk_socket->file->f_cred->fsgid);

xt_owner.c is also using f_cred, so it might need the same,
does it not?

^ permalink raw reply	[flat|nested] 15+ messages in thread

* Re: (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt
  2012-09-10  5:02       ` (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt Jan Engelhardt
@ 2012-09-10  6:00         ` Eric Dumazet
  0 siblings, 0 replies; 15+ messages in thread
From: Eric Dumazet @ 2012-09-10  6:00 UTC (permalink / raw)
  To: Jan Engelhardt; +Cc: Sami Farin, netdev, Florian Westphal, e1000-devel

On Mon, 2012-09-10 at 07:02 +0200, Jan Engelhardt wrote:
> On Monday 2012-09-03 00:53, Eric Dumazet wrote:
> >[PATCH] xt_LOG: take care of timewait sockets
> >
> >Sami Farin reported crashes in xt_LOG because it assumes skb->sk is a
> >full blown socket.
> >
> >But with TCP early demux, we can have skb->sk pointing to a timewait
> >socket.
> >
> >+static void dump_sk_uid_gid(struct sbuff *m, struct sock *sk)
> >+{
> >+	if (!sk || sk->sk_state == TCP_TIME_WAIT)
> >+		return;
> >+
> >+	read_lock_bh(&sk->sk_callback_lock);
> >+	if (sk->sk_socket && sk->sk_socket->file)
> >+		sb_add(m, "UID=%u GID=%u ",
> >+			sk->sk_socket->file->f_cred->fsuid,
> >+			sk->sk_socket->file->f_cred->fsgid);
> 
> xt_owner.c is also using f_cred, so it might need the same,
> does it not?

Right.

AFAIK, xt_owner would make little sense in input path, no ?

static struct xt_match owner_mt_reg __read_mostly = {
        .name       = "owner",
        .revision   = 1,
        .family     = NFPROTO_UNSPEC,
        .checkentry = owner_check,
        .match      = owner_mt,
        .matchsize  = sizeof(struct xt_owner_match_info),
        .hooks      = (1 << NF_INET_LOCAL_OUT) |
                      (1 << NF_INET_POST_ROUTING),
        .me         = THIS_MODULE,
};


So it seems we have nothing to do at this moment.





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^ permalink raw reply	[flat|nested] 15+ messages in thread

end of thread, other threads:[~2012-09-14  9:31 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-08-21 13:49 (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt Sami Farin
2012-09-02 12:20 ` Sami Farin
2012-09-02 13:28   ` Florian Westphal
2012-09-02 13:45     ` Sami Farin
2012-09-02 22:53     ` Eric Dumazet
2012-09-02 23:37       ` Eric Dumazet
2012-09-02 23:48       ` [PATCH v2] netfilter: take care of timewait sockets Eric Dumazet
2012-09-03  7:47         ` Florian Westphal
2012-09-03  9:57           ` Eric Dumazet
2012-09-03 17:23             ` David Miller
2012-09-04  7:55         ` Eric Dumazet
2012-09-04 16:16           ` David Miller
2012-09-14  9:30         ` Sami Farin
2012-09-10  5:02       ` (ipt_log_packet, sb_add) 3.6.0-rc2 kernel panic - not syncing; Fatal exception in interrupt Jan Engelhardt
2012-09-10  6:00         ` Eric Dumazet

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