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setpci write failed

asked 2016-05-03 08:22:08 -0500

Boken gravatar image

Every time I try to run setpci it gives me the following error:

pcilib: sysfs_write: write failed: Operation not permitted

I have used this command with sudo, so I'm pretty sure it is not a permission issue.

The exact command I run is sudo setpci -s 00:1c.2 0x50.B=0x41, trying to follow a tutorial on getting my SD card reader to word. The output of the relevant lspci is the following:

00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4) (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
    Interrupt: pin C routed to IRQ 18
    Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
    Memory behind bridge: afb00000-afbfffff
    Prefetchable memory behind bridge: 00000000c0400000-00000000c04fffff
    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
            ExtTag- RBE+
        DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
            MaxPayload 128 bytes, MaxReadReq 128 bytes
        DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
        LnkCap: Port #3, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
            ClockPM- Surprise- LLActRep+ BwNot- ASPMOptComp-
        LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- 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 #2, PowerLimit 10.000W; Interlock- NoCompl+
        SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
            Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
        SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
            Changed: MRL- PresDet- LinkState-
        RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
        RootCap: CRSVisible-
        RootSta: PME ReqID 0000, PMEStatus- PMEPending-
        DevCap2: Completion Timeout: Range BC, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd-
        DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled ARIFwd-
        LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
             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: Acer Incorporated [ALI] Device 0743
    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
    Kernel modules: shpchp
00: 86 80 14 1e 07 00 10 00 c4 00 04 06 10 00 81 00
10: 00 00 00 00 00 00 00 00 00 04 04 00 f0 00 00 20
20: b0 af b0 af 41 c0 41 c0 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 ...
(more)
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answered 2016-05-03 13:21:08 -0500

hhlp gravatar image

updated 2016-05-03 13:23:32 -0500

I made some investigation and I found a conclusion for your problem :

this forum have the same problem as you mention : setpci failing with latest patch

the problme is about grsecurity , What is grsecurity -> Grsecurity® is an extensive security enhancement to the Linux kernel that defends against a wide range of security threats through intelligent access control, memory corruption-based exploit prevention, and a host of other system hardening that generally require no configuration. from Here

the forum indicate you that have to patch the kernel, where to find the PATCH and How to compile a build a kernel is -> Configuring and Installing grsecurity

now the easy way is filling a bug in Red Hat Bugzilla against the packages kernel provides all the information of this thread and the command uname -r

Regards.,

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Asked: 2016-05-03 08:22:08 -0500

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Last updated: May 03 '16