smb/server: fix possible refcount leak in smb2_sess_setup()

[ Upstream commit 379510a815cb2e64eb0a379cb62295d6ade65df0 ]

Reference count of ksmbd_session will leak when session need reconnect.
Fix this by adding the missing ksmbd_user_session_put().

Co-developed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: ZhangGuoDong <zhangguodong@kylinos.cn>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 67021dc6dfd8197581ccf557b076a6b13b64dbff..cd42d25812661d2085fd22b176e8d477904f56f9 100644 (file)
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -1798,6 +1798,7 @@ int smb2_sess_setup(struct ksmbd_work *work)
 
                if (ksmbd_conn_need_reconnect(conn)) {
                        rc = -EFAULT;
+                       ksmbd_user_session_put(sess);
                        sess = NULL;
                        goto out_err;
                }