diff --git a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
index 3cbffd400b1b..fe455f01aa65 100644
--- a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
+++ b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
@@ -80,6 +80,22 @@ static inline bool __request_completed(const struct i915_request *rq)
 	return i915_seqno_passed(__hwsp_seqno(rq), rq->fence.seqno);
 }
 
+__maybe_unused static bool
+check_signal_order(struct intel_context *ce, struct i915_request *rq)
+{
+	if (!list_is_last(&rq->signal_link, &ce->signals) &&
+	    i915_seqno_passed(rq->fence.seqno,
+			      list_next_entry(rq, signal_link)->fence.seqno))
+		return false;
+
+	if (!list_is_first(&rq->signal_link, &ce->signals) &&
+	    i915_seqno_passed(list_prev_entry(rq, signal_link)->fence.seqno,
+			      rq->fence.seqno))
+		return false;
+
+	return true;
+}
+
 void intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine)
 {
 	struct intel_breadcrumbs *b = &engine->breadcrumbs;
@@ -99,6 +115,8 @@ void intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine)
 			struct i915_request *rq =
 				list_entry(pos, typeof(*rq), signal_link);
 
+			GEM_BUG_ON(!check_signal_order(ce, rq));
+
 			if (!__request_completed(rq))
 				break;
 
@@ -282,6 +300,7 @@ bool i915_request_enable_breadcrumb(struct i915_request *rq)
 		list_add(&rq->signal_link, pos);
 		if (pos == &ce->signals) /* catch transitions from empty list */
 			list_move_tail(&ce->signal_link, &b->signalers);
+		GEM_BUG_ON(!check_signal_order(ce, rq));
 
 		set_bit(I915_FENCE_FLAG_SIGNAL, &rq->fence.flags);
 	}