X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=kernel%2Futsname.c;h=64d398f1244436cbdc4ede981dd927e39ee708b5;hb=eb703027ac4ed563823e4d7824f68afed637d89a;hp=9d8180a0f0d815dbe051dbb6a710385d22f0b342;hpb=40b42f1ebf653cd72c32eb1a1a0b9fea2dfbfd7d;p=deliverable%2Flinux.git

diff --git a/kernel/utsname.c b/kernel/utsname.c
index 9d8180a0f0d8..64d398f12444 100644
--- a/kernel/utsname.c
+++ b/kernel/utsname.c
@@ -14,6 +14,7 @@
 #include <linux/utsname.h>
 #include <linux/version.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 
 /*
  * Clone a new ns copying an original utsname, setting refcount to 1
@@ -28,7 +29,9 @@ static struct uts_namespace *clone_uts_ns(struct uts_namespace *old_ns)
 	if (!ns)
 		return ERR_PTR(-ENOMEM);
 
+	down_read(&uts_sem);
 	memcpy(&ns->name, &old_ns->name, sizeof(ns->name));
+	up_read(&uts_sem);
 	kref_init(&ns->kref);
 	return ns;
 }