diff --git a/test/lib/aux.sh b/test/lib/aux.sh
index d5509a763..1418bb473 100644
--- a/test/lib/aux.sh
+++ b/test/lib/aux.sh
@@ -1480,6 +1480,7 @@ wait_for_sync() {
 	done
 
 	echo "Sync is taking too long - assume stuck"
+	echo t >/proc/sysrq-trigger 2>/dev/null
 	return 1
 }