target/linux/brcm2708/patches-4.4/0483-drm-vc4-Fix-oops-when-userspace-hands-in-a-bad-BO.patch

   1 From 6d3d23c57b33d76f0b4f01221593182c0de34ef4 Mon Sep 17 00:00:00 2001
   2 From: Eric Anholt <eric@anholt.net>
   3 Date: Mon, 25 Jul 2016 16:10:04 -0700
   4 Subject: [PATCH] drm/vc4: Fix oops when userspace hands in a bad BO.
   5
   6 We'd end up NULL pointer dereferencing because we didn't take the
   7 error path out in the parent.  Fixes igt vc4_lookup_fail test.
   8
   9 Signed-off-by: Eric Anholt <eric@anholt.net>
  10 Fixes: d5b1a78a772f ("drm/vc4: Add support for drawing 3D frames.")
  11 Cc: stable@vger.kernel.org
  12 ---
  13  drivers/gpu/drm/vc4/vc4_gem.c | 2 +-
  14  1 file changed, 1 insertion(+), 1 deletion(-)
  15
  16 --- a/drivers/gpu/drm/vc4/vc4_gem.c
  17 +++ b/drivers/gpu/drm/vc4/vc4_gem.c
  18 @@ -585,7 +585,7 @@ vc4_cl_lookup_bos(struct drm_device *dev
  19
  20  fail:
  21         drm_free_large(handles);
  22 -       return 0;
  23 +       return ret;
  24  }
  25
  26  static int