From 200fb0ca1a5529c0420a5ec7f44b8833e4692db6 Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@redhat.com>
Date: Thu, 16 May 2013 17:43:55 +0200
Subject: [PATCH] --- yaml --- r: 375662 b: refs/heads/master c:
 264b83c07a84223f0efd0d1db9ccc66d6f88288f h: refs/heads/master v: v3

---
 [refs]              | 2 +-
 trunk/kernel/kmod.c | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 32bb727c1fe2..b0809ed40aff 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5c64e3a45d43c6e3fa87cbe02e10059171d10812
+refs/heads/master: 264b83c07a84223f0efd0d1db9ccc66d6f88288f
diff --git a/trunk/kernel/kmod.c b/trunk/kernel/kmod.c
index 1296e72e4161..8241906c4b61 100644
--- a/trunk/kernel/kmod.c
+++ b/trunk/kernel/kmod.c
@@ -569,6 +569,11 @@ int call_usermodehelper_exec(struct subprocess_info *sub_info, int wait)
 	int retval = 0;
 
 	helper_lock();
+	if (!sub_info->path) {
+		retval = -EINVAL;
+		goto out;
+	}
+
 	if (sub_info->path[0] == '\0')
 		goto out;