Re: [PATCH] mutex: Always clear owner field upon mutex_unlock()

[Peter Zijlstra]

On Tue, Jan 06, 2015 at 10:29:35AM +0000, Chris Wilson wrote:
> Currently if DEBUG_MUTEXES is enabled, the mutex->owner field is only
> cleared iff debug_locks is active. This exposes a race to other users of
> the field where the mutex->owner may be still set to a stale value,
> potentially upsetting mutex_spin_on_owner() among others.


Thanks
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