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MUTEX_ALREADY_OWNED
The MUTEX_ALREADY_OWNED bug check has a value of 0x000000BF. This indicates that a thread attempted to acquire ownership of a mutex it already owned.
MUTEX_ALREADY_OWNED Parameters
| Parameter | Description |
|---|---|
1 |
The address of the mutex |
2 |
The thread that caused the error |
3 |
0 |
4 |
Reserved |
Diagnostic focus
Parameter 1 identifies the mutex and parameter 2 the offending thread. Inspect that thread acquisition path and recursion assumptions. Kernel mutex ownership is not recursively reacquired this way; a repeated lock attempt often exposes an incorrect control-flow path, a missing release, or confusion with a recursive synchronization primitive.
References
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