1 files changed, 20 insertions, 2 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 84e60b3a5c7c..4ffd5e177288 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -249,10 +249,27 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
 	 * the same SMB session
 	 */
 	mutex_lock(&tcon->ses->session_mutex);
+
+	/*
+	 * Recheck after acquire mutex. If another thread is negotiating
+	 * and the server never sends an answer the socket will be closed
+	 * and tcpStatus set to reconnect.
+	 */
+	if (server->tcpStatus == CifsNeedReconnect) {
+		rc = -EHOSTDOWN;
+		mutex_unlock(&tcon->ses->session_mutex);
+		goto out;
+	}
+
 	rc = cifs_negotiate_protocol(0, tcon->ses);
-	if (!rc && tcon->ses->need_reconnect)
+	if (!rc && tcon->ses->need_reconnect) {
 		rc = cifs_setup_session(0, tcon->ses, nls_codepage);
-
+		if ((rc == -EACCES) && !tcon->retry) {
+			rc = -EHOSTDOWN;
+			mutex_unlock(&tcon->ses->session_mutex);
+			goto failed;
+		}
+	}
 	if (rc || !tcon->need_reconnect) {
 		mutex_unlock(&tcon->ses->session_mutex);
 		goto out;
@@ -286,6 +303,7 @@ out:
 	case SMB2_SET_INFO:
 		rc = -EAGAIN;
 	}
+failed:
 	unload_nls(nls_codepage);
 	return rc;
 }