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OSS_NULL_TBL
OSS_NULL_TBL (0x80093014) is an OSS ASN.1 runtime result for missing encoder or decoder control table. The OssControl object has no control-table pointer because initialization was skipped, failed, or the object was reset or overwritten. Because return value from ossinit or its language equivalent is central to this condition, Microsoft’s HRESULT range and the OSS Nokalva return-code documentation should be read together. Start the investigation by recording control object address at init and use, then separate the encoded value from generated artifacts, call arguments, and the runtime package actually loaded by the process.
Where processing stopped
At the missing encoder or decoder control table boundary, capture the first OSS function returning the value and note whether the operation was encode, decode, copy, compare, constraint validation, or trace setup. Preserve the selected PDU, encoding rules, and generated table symbol supplied to initialization; otherwise an outer certificate or security wrapper may hide the useful codec result behind a generic failure.
Isolation sequence
- fail fast if initialization is not successful
- Create and use the object in one narrow scope
- Test accidental zero-initialization after setup
Facts that change the conclusion
- return value from ossinit or its language equivalent
- control object address at init and use
- generated table symbol supplied to initialization
Similar names, different faults: the result
BAD_TABLE rejects damaged table content; NULL_TBL means there is no table to inspect at all.
Instrumentation
Where return value from ossinit or its language equivalent can expose sensitive content, a hash plus a bounded structural excerpt is safer than the complete payload. Use control object address at init and use together with OSS module paths and versions logged once per process so packaging differences can be correlated without flooding normal diagnostics.
Completion check: the result
Make successful runtime initialization a prerequisite and prevent later clearing or shallow copying of the control object.
Technical references
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