BSOD 296 (WORKER_THREAD_RETURNED_WITH_BAD_IO

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: WORKER_THREAD_RETURNED_WITH_BAD_IO_PRIORITY

Could be also:
Constant	Type	OS
STATUS_INTERRUPT_STILL_CONNECTED	NTSTATUS	Windows

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PAGE_NOT_ZERO	WORKER_THREAD_RETURNED_WITH_BAD_PAGING_IO_PRIORITY

WORKER_THREAD_RETURNED_WITH_BAD_IO_PRIORITY

WORKER_THREAD_RETURNED_WITH_BAD_IO_PRIORITY catches worker-thread state leaked by a called worker routine. Microsoft says the routine wrongly modified the worker thread's I/O priority and returned without restoring the expected state.

The parameters point back to the work item

Parameter 1 is the worker-routine address; use ln to resolve the responsible symbol or driver.
Parameter 2 is the current I/O-priority value detected on return.
Parameters 3 and 4 preserve the work-item parameter and work-item address.

Why this is not an I/O device failure

The stop code describes thread priority state, not a failed disk or network request. Review every exit path in the worker routine for code that changes I/O priority and fails to restore it, including error and cancellation paths. The work-item arguments help correlate the leaked state with the queued operation.

References

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