diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c
index f5a88092dacfa2523ce0e2161f8ec47dcacd4580..40f4e5efaf837e52ad299bf66790383e424975d8 100644
--- a/drivers/gpu/drm/i915/i915_sw_fence.c
+++ b/drivers/gpu/drm/i915/i915_sw_fence.c
@@ -63,6 +63,7 @@ static inline void debug_fence_destroy(struct i915_sw_fence *fence)
 static inline void debug_fence_free(struct i915_sw_fence *fence)
 {
 	debug_object_free(fence, &i915_sw_fence_debug_descr);
+	smp_wmb(); /* flush the change in state before reallocation */
 }
 
 static inline void debug_fence_assert(struct i915_sw_fence *fence)