PSOD LINT1 with VTDIommuFaultHandler
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PSOD LINT1 with VTDIommuFaultHandler

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Article ID: 345237

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Updated On:

Products

VMware vSphere ESXi

Issue/Introduction

Symptoms:
PSOD
@BlueScreen: LINT1/NMI (motherboard nonmaskable interrupt), undiagnosed. This may be a hardware problem; please contact your hardware vendor.

PSOD backtrace inlcudes:
VTDIommuFaultHandler


Environment

VMware vSphere ESXi 6.7
VMware vSphere ESXi 6.0
VMware vSphere ESXi 6.5

Cause

  • Failing hardware device

Resolution

PLEASE NOTE: A specific device is shown here as an example only.
It could be any hardware that is faulting and this procedures helps to determine the identity of the component.
  • The vmkernel-zdump log messages before the crash include a VTD IOMMU fault message:
0:00:00:20.083 cpu0:65536)WARNING: VTD: 162: (Stale Entry) DMAR Fault IOMMU Unit #0: R/W=R, Device 0000:86:00.0 Faulting addr = 0x91de5d000 Fault Reason = 0x6 -> PTE not set to allow Read.
  • The fault message shows the PCI device address: 
0000:86:00.0
  • lspci shows the PCI device details :
lspci -v
  • Output shows that this is a Display Controller 
0000:86:00.0 VGA compatible controller Display controller: NVIDIA Corporation NVIDIATesla  M10 [vmgfx0]

Contact the server hardware vendor.