diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 28e9d6c9..41faf0b 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -972,7 +972,7 @@
 	int "RCU CPU stall timeout in seconds"
 	depends on TREE_RCU || TREE_PREEMPT_RCU
 	range 3 300
-	default 60
+	default 21
 	help
 	  If a given RCU grace period extends more than the specified
 	  number of seconds, a CPU stall warning is printed.  If the