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drm: Detect overflow in drm_mm_reserve_node()
authorChris Wilson <chris@chris-wilson.co.uk>
Thu, 22 Dec 2016 08:36:26 +0000 (08:36 +0000)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Tue, 27 Dec 2016 13:16:59 +0000 (14:16 +0100)
commitc820186d5b3b213c5a627c45e5db386bb739af25
tree7c843d5933077c6c0f208bfa3dc498c0d198bd2etree | snapshot (tar.gz zip)
parentba004e39b1997bb32150961eef4a5cd02ba3edeccommit | diff
drm: Detect overflow in drm_mm_reserve_node()

Protect ourselves from a caller passing in node.start + node.size that
will overflow and trick us into reserving that node.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-24-chris@chris-wilson.co.uk
drivers/gpu/drm/drm_mm.c diff | blob | blame | history