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EBADE
EBADE: Linux legacy errno
EBADE (errno 3) reports that a System V-style exchange operation referenced an invalid exchange object. 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 exchange identifier, endpoint/device, operation name, and object generation.
Focused test
repeat the same exchange request with a known-live exchange object while keeping endpoint and request type unchanged.
Correction
correct the stale or invalid exchange identifier; do not reset unrelated IPC state.
Verification
Repeat the original system call and confirm it passes the former EBADE boundary with the same object identity.
Technical references
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