cifs: fix potential use-after-free in cifs_echo_request()

[platform/kernel/linux-starfive.git] / fs / cifs / connect.c

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index c38156f..28c1459 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -876,6 +876,8 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server)
        list_del_init(&server->tcp_ses_list);
        spin_unlock(&cifs_tcp_ses_lock);
 
+       cancel_delayed_work_sync(&server->echo);
+
        spin_lock(&GlobalMid_Lock);
        server->tcpStatus = CifsExiting;
        spin_unlock(&GlobalMid_Lock);