From a5889fb5df4f404d6d4fa29abde3302393232ef3 Mon Sep 17 00:00:00 2001
From: Tomoki Shirasawa <sira@popeye.cc.u-tokyo.ac.jp>
Date: Thu, 4 Dec 2014 11:31:50 +0900
Subject: [PATCH] sigaction check signal number (LTP sigaction02)

---
 arch/x86/kernel/syscall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/syscall.c b/arch/x86/kernel/syscall.c
index 0b3bb814..71a5fa28 100644
--- a/arch/x86/kernel/syscall.c
+++ b/arch/x86/kernel/syscall.c
@@ -110,7 +110,7 @@ SYSCALL_DECLARE(rt_sigaction)
 	struct k_sigaction new_sa, old_sa;
 	int rc;
 
-	if(sig == SIGKILL || sig == SIGSTOP)
+	if(sig == SIGKILL || sig == SIGSTOP || sig <= 0 || sig > 64)
 		return -EINVAL;
 	if (sigsetsize != sizeof(sigset_t))
 		return -EINVAL;