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EL3HLT
What “Level 3 halted” tells you
EL3HLT is retained in the Solaris/illumos errno number space as value 39. The current Oracle catalog supplies the level-state label but no modern system-call condition, and the name is outside the POSIX errno set. That makes provenance more important than guessing a present-day device meaning.
The status is specifically a halt indication for level 3. EL3RST represents a reset of that level, while EL2HLT refers to a different level. Those distinctions matter when decoding an old protocol stack, driver interface, trace file, or compatibility table that intentionally exposes these values.
Diagnostic approach
- Locate the statement that assigned or returned errno 39. A current generic syscall failure should normally have a documented errno in that syscall's manual page.
- If the number came from serialized telemetry or another host, verify the source operating system before applying the Solaris symbolic name.
- For ported code, search its own headers and error-mapping layer for
EL3HLT; do not infer that modern Solaris networking uses a numbered “level 3” state.
References
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