sunrpc: handle allocation errors from __rpc_lookup_create()

__rpc_lookup_create() can return ERR_PTR(-ENOMEM).

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org

diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 8d63f8fd29b7e3ff0e940d7457d45203f99c56b1..20e30c6f8355dc0bc612bffb44abefee7c3536df 100644 (file)
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -587,6 +587,8 @@ static struct dentry *__rpc_lookup_create_exclusive(struct dentry *parent,
        struct dentry *dentry;
 
        dentry = __rpc_lookup_create(parent, name);
+       if (IS_ERR(dentry))
+               return dentry;
        if (dentry->d_inode == NULL)
                return dentry;
        dput(dentry);