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SPIN_LOCK_INIT_FAILURE
Spin-lock initialization failure for SPIN_LOCK_INIT_FAILURE
SPIN_LOCK_INIT_FAILURE is bug check code 0x00000081. Spin locks are kernel synchronization primitives used at elevated IRQL. This bug check indicates initialization state failed before a later acquire/release path could even use the lock correctly.
How to read it in a dump
- Distinguish this from SPIN_LOCK_NOT_OWNED: this is initialization, not ownership release.
- Memory corruption, invalid driver global state, or a failed low-level init path can be responsible.
- The failing module and allocation context matter.
What to check
- Inspect the stack for the driver or subsystem that owns the lock object.
- Enable Driver Verifier for suspect boot-start or kernel drivers.
- Look for pool corruption before the initialization failure.
References
Dump evidence
Preserve the complete dump, the four bug-check parameters, the exact Windows build, loaded-module list, and the event timeline immediately before the stop. AllStat summarizes the condition as “this result”; that sentence identifies the failure class, while the parameters and stack determine which object, driver, processor, or subsystem instance was involved.
Analysis order
- Run WinDbg
!analyze -v, then inspect the documented meaning of each parameter instead of relying only on the probably-caused-by line. - find the earliest abnormal event: driver update, firmware change, device reset, storage error, verifier report, resource exhaustion, or application hang connected with spin / lock / init.
- keep third-party filter, security, storage, graphics, and virtualization drivers in the module inventory; removing evidence before dump analysis can obscure the responsible path.
Do not repeatedly reboot a machine affected by this result before collecting the dump and event logs. Recovery actions should follow the component identified by the stack and parameters, not merely the symbolic stop-code name.
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