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@xxxxxxxxxxxxxxx>.
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@xxxxxxxxxx>
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@xxxxxxxxxxxxxxx
Reviewed-by: Paulo Alcantara (SUSE) <pc@xxxxxx>
Acked-by: Tom Talpey <tom@xxxxxxxxxx>
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Cc: Long Li <longli@xxxxxxxxxxxxx>
Cc: Pavel Shilovsky <piastryyy@xxxxxxxxx>
Cc: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
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;
}
/*
