NFSv4: Fix a potentially Oopsable condition in __nfs_idmap_unregister

Ensure that __nfs_idmap_unregister can be called twice without consequences. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-08-30 09:19:38 -04:00
parent 6b2fddd3e7
commit d7631250b2
1 changed files with 3 additions and 1 deletions
@@ -404,8 +404,10 @@ static struct key_type key_type_id_resolver_legacy = {

 static void __nfs_idmap_unregister(struct rpc_pipe *pipe)
 {
-	if (pipe->dentry)
+	if (pipe->dentry) {
 		rpc_unlink(pipe->dentry);
+		pipe->dentry = NULL;
+	}
 }

 static int __nfs_idmap_register(struct dentry *dir,