]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915: Fix oops in overlay due to frontbuffer tracking
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Wed, 7 Dec 2016 17:28:03 +0000 (19:28 +0200)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Thu, 22 Dec 2016 19:27:03 +0000 (21:27 +0200)
commitc412bd992ad8dab223cccc2c098c307241db5b09
tree66fb138dc2285a03d4fff02049d0f7552de84ef6
parent9688c2bdfd479c11049d4973241dd4705537f272
drm/i915: Fix oops in overlay due to frontbuffer tracking

The vma will be NULL if the overlay was previously off, so
dereferencing it will oops. Check for NULL before doing that.

Cc: stable@vger.kernel.org
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Fixes: 30a7c7aa05c4 ("drm/i915/overlay: Use VMA as the primary tracker for images")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1481131693-27993-2-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
drivers/gpu/drm/i915/intel_overlay.c