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How to troubleshoot PCI/NMI, UMCE, and nested machine check exception panics

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Applies to

  • PCI Non-Maskable Interrupt (NMI) panics
  • PCI Uncorrectable Machine Check Exception (UMCE) panics
  • non-PCI Uncorrectable Machine Check Exception (UMCE) panics
  • Nested machine check exception panics
  • AFF Systems
  • FAS Systems

Description

This article describes how to troubleshoot the following types of panic:

  1. PCI/NMI

PANIC: PCI Error NMI from device(s):PCI Device 111d:806c in slot 2 on Controller, Qlogic FC 8G adapter in slot 2 on Controller, Qlogic FC 8G adapter in slot 2 on Controller. in process idle on release 8.3 (C) on Fri Sep 18 13:27:47 MDT 2015

  1. PCI UMCE

Uncorrectable Machine Check Error at CPU0. MC5 Error: STATUS<0xb200001084200e0f>(Val,UnCor,Enable,PCC,ErrCode(Gen,NTO,Gen,Gen,Gen)); Root Port(0,6,0): Status(SigSysErr), SecStatus(RcvMstAbt), DevStatus(NFatal), RootErr(UCor,NFatal), ErrSrcID(CorrSrc(0),UCorrSrc(0x20)), UCorrErr(CpTim), FirstUCorrErr(CpTim), Hdr[0](HdrLen(4),AddrType(0),Attr(0),Tc(0),Type(0),Format(3)), Hdr[1]((0xe0304ff)), Hdr[2]((0x1)), Hdr[3]((0x1bb93710)).  in process pci_poll on release 8.1.2P3

  1. non-PCI UMCE

Uncorrectable Machine Check Error at CPU0. MC0 Error: STATUS<0xb200000430000800>(Val,UnCor,Enable,PCC,ErrCode(Src,NTO,Gen,Mem,L0)). MC5 Error: STATUS<0xf2000010c4300e0f>(Val,OverF,UnCor,Enable,PCC,ErrCode(Gen,NTO,Gen,Gen,Gen)); Uncorrectable error at DIMM-1, Channel 0, Serial: BA-00-1131-00098398!69002460-I01-NTA-T1?!, FERR(0x400), NERR(0x402), MERR M10Err, Rank 3, Bank 6, CAS 0x1e8, RAS 0x1bcf Uncorrectable error at DIMM-1, Channel 0, Serial: BA-00-1131-00098398!69002460-I01-NTA-T1?!, MERR M10Err, Rank 3, Bank 6, CAS 0x1e8, RAS 0x1bc.

  1. Nested Machine check

PANIC: nested machine check exception detected on CPU #, no coredump will be generated.

 

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