NTSTATUS 0xC023001D (STATUS_NDIS_ALREADY

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Description:

the NDIS file handle is already mapped and cannot be mapped again until it is unmapped.

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STATUS_NDIS_ERROR_READING_FILE	STATUS_NDIS_RESOURCE_CONFLICT

STATUS_NDIS_ALREADY_MAPPED

The driver is trying to map the same NDIS file handle twice

STATUS_NDIS_ALREADY_MAPPED is a file-handle lifetime error, not a filesystem lookup error. NdisMapFile maps an already open file only when it is currently unmapped; while mapped, the caller has exclusive access to the file contents until NdisUnmapFile releases that mapping.

Look for an initialization path that retries without unwinding, a shared helper that maps a firmware image for two consumers, or an error path that skips the unmap call. The fix is normally deterministic lifetime management around map, use, unmap, and close operations.

Evidence that narrows it

Track each NdisMapFile, NdisUnmapFile, and NdisCloseFile call for the same file handle.
Ensure retry paths do not re-enter the mapping operation while an earlier mapping remains active.
Separate this from STATUS_NDIS_ERROR_READING_FILE, which occurs while obtaining file contents.

References

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