---

yaml --- r: 299058 b: refs/heads/master c: 44e4360 h: refs/heads/master v: v3
git-mirror · Apr 12, 2012 · 1ca0c47 · 1ca0c47
1 parent fd3c19b
commit 1ca0c47
Show file tree

Hide file tree

Showing 2 changed files with 9 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d833049bd20570cbbadeb5228c579f9f3aaa4e03
+refs/heads/master: 44e4360fa3384850d65dd36fb4e6e5f2f112709b
diff --git a/trunk/drivers/char/random.c b/trunk/drivers/char/random.c
@@ -1260,10 +1260,15 @@ static int proc_do_uuid(ctl_table *table, int write,
 	uuid = table->data;
 	if (!uuid) {
 		uuid = tmp_uuid;
-		uuid[8] = 0;
-	}
-	if (uuid[8] == 0)
 		generate_random_uuid(uuid);
+	} else {
+		static DEFINE_SPINLOCK(bootid_spinlock);
+
+		spin_lock(&bootid_spinlock);
+		if (!uuid[8])
+			generate_random_uuid(uuid);
+		spin_unlock(&bootid_spinlock);
+	}
 
 	sprintf(buf, "%pU", uuid);