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OSS_BAD_TABLE
OSS_BAD_TABLE (0x8009300F) is an OSS ASN.1 runtime result for corrupt encoder or decoder control table. The runtime cannot use the generated control information, usually because the OssControl object or table pointer has been damaged or initialized incorrectly. Because address and identity of the control table 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 result of the initialization function, then separate the encoded value from generated artifacts, call arguments, and the runtime package actually loaded by the process.
Avoid the wrong workaround: OSS_BAD_TABLE
NULL_TBL is specifically a null table pointer; BAD_TABLE means a non-null table fails integrity or interpretation checks.
Interpretation at runtime
At the corrupt 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 write history for the OssControl storage; otherwise an outer certificate or security wrapper may hide the useful codec result behind a generic failure.
Diagnostic record
| Record | Diagnostic value |
|---|---|
| address and identity of the control table | Locates the concrete message, allocation, module, or API boundary |
| result of the initialization function | Separates payload-dependent behavior from build and process state |
| write history for the OssControl storage | Makes the comparison reproducible without rewriting the original artifact |
Keep the original bytes or object graph unchanged while testing create a new control object in isolated storage. A change in result of the initialization function after reload, plugin replacement, restart, or schema deployment is evidence about runtime state, not permission to discard the reproducer. When write history for the OssControl storage points to one message, retain a cryptographic hash and the smallest safe sample instead of logging certificate, subscriber, credential, or private-key material.
Small experiments with high signal
- create a new control object in isolated storage
- compare table bytes with the deployed artifact
- remove post-initialization writes to the control structure
Decision matrix
| Controlled observation | Conclusion it supports |
|---|---|
| create a new control object in isolated storage | A changed outcome isolates the first proposed control instead of a blind retry |
| address and identity of the control table differs between success and failure | The difference localizes the corrupt encoder or decoder control table boundary before unrelated settings are changed |
| An independent decoder accepts the same artifact | Inspect generated schema, selected rules, ABI, and optional OSS modules before declaring the bytes invalid |
| A fresh control object changes the outcome | Investigate initialization, lifecycle, allocator ownership, configuration mutation, and concurrent access |
Instrumentation
Record the full 32-bit HRESULT and lower OSS return number together with operation direction, symbolic PDU, encoding rule, byte count, and generated-table identifier. Where address and identity of the control table can expose sensitive content, a hash plus a bounded structural excerpt is safer than the complete payload. Use result of the initialization function together with OSS module paths and versions logged once per process so packaging differences can be correlated without flooding normal diagnostics.
Proof of recovery: the result
Treat generated control data as immutable, initialize once as documented, and replace any mixed or modified artifact. A recovery test built around create a new control object in isolated storage should replay the same operation under the same schema and encoding rule, retain one deliberately invalid control, and verify ownership and cleanup after both outcomes. Success after an unexamined retry is not proof that address and identity of the control table now satisfies the codec contract.
Technical references
- Microsoft: OSS ASN.1 HRESULT definitions
- OSS Nokalva: encoder/decoder return codes
- OSS Nokalva: runtime functions and control initialization
- Relevant ASN.1 specification or runtime detail
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