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-rw-r--r--kernel/rcutree_plugin.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index 50c17975d4f4..ad61da79b311 100644
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -2065,6 +2065,7 @@ static bool rcu_cpu_has_nonlazy_callbacks(int cpu)
*/
static void rcu_idle_gp_timer_func(unsigned long unused)
{
+ WARN_ON_ONCE(1); /* Getting here can hang the system... */
trace_rcu_prep_idle("Timer");
}