drm/vc4: Fix memory leak during BO teardown

During BO teardown, an indirect list 'uniform_addr_offsets' wasn't being
freed leading to leaking many 128B allocations. Fix the memory leak by
releasing it at teardown time.

Cc: stable@vger.kernel.org
Fixes: 6d45c81d229d ("drm/vc4: Add support for branching in shader validation.")
Signed-off-by: Daniel J Blueman <daniel@quora.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180402071035.25356-1-daniel@quora.org

2 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c
index 2decc8e2c79f..add9cc97a3b6 100644
--- a/drivers/gpu/drm/vc4/vc4_bo.c
+++ b/drivers/gpu/drm/vc4/vc4_bo.c
@@ -195,6 +195,7 @@ static void vc4_bo_destroy(struct vc4_bo *bo)
         vc4_bo_set_label(obj, -1);
 
         if (bo->validated_shader) {
+                kfree(bo->validated_shader->uniform_addr_offsets);
                 kfree(bo->validated_shader->texture_samples);
                 kfree(bo->validated_shader);
                 bo->validated_shader = NULL;
@@ -591,6 +592,7 @@ void vc4_free_object(struct drm_gem_object *gem_bo)
         }
 
         if (bo->validated_shader) {
+                kfree(bo->validated_shader->uniform_addr_offsets);
                 kfree(bo->validated_shader->texture_samples);
                 kfree(bo->validated_shader);
                 bo->validated_shader = NULL;
diff --git a/drivers/gpu/drm/vc4/vc4_validate_shaders.c b/drivers/gpu/drm/vc4/vc4_validate_shaders.c
index d3f15bf60900..7cf82b071de2 100644
--- a/drivers/gpu/drm/vc4/vc4_validate_shaders.c
+++ b/drivers/gpu/drm/vc4/vc4_validate_shaders.c
@@ -942,6 +942,7 @@ vc4_validate_shader(struct drm_gem_cma_object *shader_obj)
 fail:
         kfree(validation_state.branch_targets);
         if (validated_shader) {
+                kfree(validated_shader->uniform_addr_offsets);
                 kfree(validated_shader->texture_samples);
                 kfree(validated_shader);
         }