From dd8b2a8f157e18b2386d825aee2bcab2d27c1665 Mon Sep 17 00:00:00 2001
From: Tomoki Shirasawa <sira@popeye.cc.u-tokyo.ac.jp>
Date: Thu, 21 Aug 2014 14:04:38 +0900
Subject: [PATCH] sigaction returns -EINVAL, when sig == SIGKILL or SIGSTOP

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

diff --git a/arch/x86/kernel/syscall.c b/arch/x86/kernel/syscall.c
index 34f9e582..b6680537 100644
--- a/arch/x86/kernel/syscall.c
+++ b/arch/x86/kernel/syscall.c
@@ -110,6 +110,8 @@ SYSCALL_DECLARE(rt_sigaction)
 	struct k_sigaction new_sa, old_sa;
 	int rc;
 
+	if(sig == SIGKILL || sig == SIGSTOP)
+		return -EINVAL;
 	if (sigsetsize != sizeof(sigset_t))
 		return -EINVAL;