What does BSOD 47 (INSTRUCTION_BUS_ERROR) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: INSTRUCTION_BUS_ERROR

Could be also:
Constant	Type	OS
KERN_NODE_DOWN	Kern return	Mac
ippStsRepetitiveSrcData	Intel Ipp Status	Any
EL3RST	errno	Linux
EAFNOSUPPORT	errno	Mac
ECANCELED	errno	Solaris

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DATA_BUS_ERROR	SET_OF_INVALID_CONTEXT

INSTRUCTION_BUS_ERROR

INSTRUCTION_BUS_ERROR is bug check 0x2F. Microsoft categorizes this stop as very infrequent and does not publish meanings for parameters 1 through 4. The historical symbolic name is not a device identifier: it does not tell you which physical bus, controller, or peripheral should be replaced.

The code does not expose a portable hardware syndrome

When investigating 0x2F, preserve the processor architecture, Windows build, firmware context, and crash dump. The debugger may show an execution path or machine context relevant to the failure. Without that evidence, translating “instruction bus” into a specific PCI, storage, or memory fault goes beyond Microsoft's published contract.

Practical triage

Save all four stop arguments exactly, even though their portable meanings are undocumented.
Run !analyze -show 0x2F and analyze the dump with matching symbols.
Compare recurring failures by instruction context, stack, and platform revision; do not group systems only by the symbolic stop name.

References

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