Re: [PATCH v2 01/11] drm/i915: WARN if plane src coords are too big

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 1/11/2021 10:07 PM, Ville Syrjala wrote:
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Inform us if we're buggy and are about to exceed the size of the
bitfields in the plane TILEOFF/OFFSET registers.

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Looks good to me.

Reviewed-by: Karthik B S <karthik.b.s@xxxxxxxxx>

---
  drivers/gpu/drm/i915/display/i9xx_plane.c    | 7 +++++++
  drivers/gpu/drm/i915/display/intel_display.c | 4 ++++
  2 files changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.c b/drivers/gpu/drm/i915/display/i9xx_plane.c
index b78985c855a5..b1158ce4df92 100644
--- a/drivers/gpu/drm/i915/display/i9xx_plane.c
+++ b/drivers/gpu/drm/i915/display/i9xx_plane.c
@@ -276,6 +276,13 @@ int i9xx_check_plane_surface(struct intel_plane_state *plane_state)
  		}
  	}
+ if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
+		drm_WARN_ON(&dev_priv->drm, src_x > 8191 || src_y > 4095);
+	} else if (INTEL_GEN(dev_priv) >= 4 &&
+		   fb->modifier == I915_FORMAT_MOD_X_TILED) {
+		drm_WARN_ON(&dev_priv->drm, src_x > 4095 || src_y > 4095);
+	}
+
  	plane_state->color_plane[0].offset = offset;
  	plane_state->color_plane[0].x = src_x;
  	plane_state->color_plane[0].y = src_y;
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 0189d379a55e..7735c28b2467 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3854,6 +3854,8 @@ static int skl_check_main_surface(struct intel_plane_state *plane_state)
  		}
  	}
+ drm_WARN_ON(&dev_priv->drm, x > 8191 || y > 8191);
+
  	plane_state->color_plane[0].offset = offset;
  	plane_state->color_plane[0].x = x;
  	plane_state->color_plane[0].y = y;
@@ -3926,6 +3928,8 @@ static int skl_check_nv12_aux_surface(struct intel_plane_state *plane_state)
  		}
  	}
+ drm_WARN_ON(&i915->drm, x > 8191 || y > 8191);
+
  	plane_state->color_plane[uv_plane].offset = offset;
  	plane_state->color_plane[uv_plane].x = x;
  	plane_state->color_plane[uv_plane].y = y;


_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx




[Index of Archives]     [AMD Graphics]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux