]> 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)
commit4a15cdbbc55463e55a7cdcf33f84ccc742ca9c29
tree66fb138dc2285a03d4fff02049d0f7552de84ef6
parentecd9caa0522db5a6b03ac8858c42067ef9d8323b
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: 9b3b7841b86d ("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