From 591f48527f97b7dfdb9e73e4a8947188728b8e28 Mon Sep 17 00:00:00 2001
From: Pavel Emelyanov <xemul@openvz.org>
Date: Tue, 4 Dec 2007 23:45:24 -0800
Subject: [PATCH] --- yaml --- r: 74609 b: refs/heads/master c:
 f1dad166e88a5ddca0acf8f11dea0e2bd92d8bf3 h: refs/heads/master i:   74607:
 0636f1e797fe93d07717ed343f6a71c82a572a2e v: v3

---
 [refs]                | 2 +-
 trunk/kernel/sysctl.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 44d8c26a7091..c69ee36d4fa8 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 092e1fdaf35126475aef0dc70f4a2ce4f2f43052
+refs/heads/master: f1dad166e88a5ddca0acf8f11dea0e2bd92d8bf3
diff --git a/trunk/kernel/sysctl.c b/trunk/kernel/sysctl.c
index 0deed82a6156..8ac51714b08c 100644
--- a/trunk/kernel/sysctl.c
+++ b/trunk/kernel/sysctl.c
@@ -1588,6 +1588,10 @@ struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
 void unregister_sysctl_table(struct ctl_table_header * header)
 {
 	might_sleep();
+
+	if (header == NULL)
+		return;
+
 	spin_lock(&sysctl_lock);
 	start_unregistering(header);
 	spin_unlock(&sysctl_lock);