errno 47 (EL3RST) in Linux: meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: EL3RST is a legacy Linux errno meaning legacy level-3 reset observed.

Could be also:
Constant	Type	OS
KERN_NODE_DOWN	Kern return	Mac
ippStsRepetitiveSrcData	Intel Ipp Status	Any
EAFNOSUPPORT	errno	Mac
ECANCELED	errno	Solaris
INSTRUCTION_BUS_ERROR	BugCheck Code	Windows

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ENOLCK	EAFNOSUPPORT

EL3RST

EL3RST: Linux legacy errno

EL3RST (errno 3) reports that the legacy level-3 component reset while the operation was in flight. These names come from historical System V/XENIX compatibility interfaces; on modern Linux they usually point to a driver, STREAMS-compatibility layer, or legacy IPC contract rather than a general filesystem error.

Evidence to capture

Record stream/device identity, reset event/time, in-flight request, and driver state.

Focused test

repeat one minimal request after the reset completes and compare it with the pre-reset failure.

Correction

repair the reset cause or reinitialize the affected protocol object before resuming work.

Verification

Repeat the original system call and confirm it passes the former EL3RST boundary with the same object identity.

Technical references

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