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CONFIG_DEBUG_LOCK_ALLOC: Lock debugging: detect incorrect freeing of live locks

General informations

The Linux kernel configuration item CONFIG_DEBUG_LOCK_ALLOC:

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This feature will check whether any held lock (spinlock, rwlock, mutex or rwsem) is incorrectly freed by the kernel, via any of the memory-freeing routines (kfree(), kmem_cache_free(), free_pages(), vfree(), etc.), whether a live lock is incorrectly reinitialized via spin_lock_init()/mutex_init()/etc., or whether there is any lock held during task exit.

Hardware

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