Quoting Chris Wilson (2018-02-15 11:36:51)
> When we descend the tree to find our slot, if we step to the right, we
> are no longer the leftmost node.
Fortunately, the cached leftmost node is unused here and no drm_mm API
exposes it. So probably doesn't make sense to send it to stable@ as no
bug exists.
> Fixes: f808c13fd373 ("lib/interval_tree: fast overlap detection")
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Davidlohr Bueso <dbueso@xxxxxxx>
> Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
> Cc: Christian König <christian.koenig@xxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx> # v4.14+
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