diff --git a/kernel/signal.c b/kernel/signal.c
index 5630255..8a04869 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1137,7 +1137,8 @@
 	return error;
 }
 
-static int kill_proc_info(int sig, struct siginfo *info, pid_t pid)
+int
+kill_proc_info(int sig, struct siginfo *info, pid_t pid)
 {
 	int error;
 	rcu_read_lock();