The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

Possible dependencies:

b7ab9161cf5d ("cifs: Fix oops due to uncleared server->smbd_conn in reconnect")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b7ab9161cf5ddc42a288edf9d1a61f3bdffe17c7 Mon Sep 17 00:00:00 2001 From: David Howells dhowells@redhat.com Date: Wed, 25 Jan 2023 14:02:13 +0000 Subject: [PATCH] cifs: Fix oops due to uncleared server->smbd_conn in reconnect

In smbd_destroy(), clear the server->smbd_conn pointer after freeing the smbd_connection struct that it points to so that reconnection doesn't get confused.

Fixes: 8ef130f9ec27 ("CIFS: SMBD: Implement function to destroy a SMB Direct connection") Cc: stable@vger.kernel.org Reviewed-by: Paulo Alcantara (SUSE) pc@cjr.nz Acked-by: Tom Talpey tom@talpey.com Signed-off-by: David Howells dhowells@redhat.com Cc: Long Li longli@microsoft.com Cc: Pavel Shilovsky piastryyy@gmail.com Cc: Ronnie Sahlberg lsahlber@redhat.com Signed-off-by: Steve French stfrench@microsoft.com

diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c index 90789aaa6567..8c816b25ce7c 100644 --- a/fs/cifs/smbdirect.c +++ b/fs/cifs/smbdirect.c @@ -1405,6 +1405,7 @@ void smbd_destroy(struct TCP_Server_Info *server) destroy_workqueue(info->workqueue); log_rdma_event(INFO, "rdma session destroyed\n"); kfree(info); + server->smbd_conn = NULL; }

/*