The patch below does not apply to the 6.3-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.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.3.y git checkout FETCH_HEAD git cherry-pick -x 91f4480c41f56f7c723323cf7f581f1d95d9ffbc # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023061729-prankster-wildcard-db1f@gregkh' --subject-prefix 'PATCH 6.3.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

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

From 91f4480c41f56f7c723323cf7f581f1d95d9ffbc Mon Sep 17 00:00:00 2001 From: Shyam Prasad N sprasad@microsoft.com Date: Fri, 9 Jun 2023 17:46:54 +0000 Subject: [PATCH] cifs: fix status checks in cifs_tree_connect

The ordering of status checks at the beginning of cifs_tree_connect is wrong. As a result, a tcon which is good may stay marked as needing reconnect infinitely.

Fixes: 2f0e4f034220 ("cifs: check only tcon status on tcon related functions") Cc: stable@vger.kernel.org # 6.3 Signed-off-by: Shyam Prasad N sprasad@microsoft.com Signed-off-by: Steve French stfrench@microsoft.com

diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c index 8e9a672320ab..1250d156619b 100644 --- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -4086,16 +4086,17 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru

/* only send once per connect */ spin_lock(&tcon->tc_lock); + if (tcon->status == TID_GOOD) { + spin_unlock(&tcon->tc_lock); + return 0; + } + if (tcon->status != TID_NEW && tcon->status != TID_NEED_TCON) { spin_unlock(&tcon->tc_lock); return -EHOSTDOWN; }

- if (tcon->status == TID_GOOD) { - spin_unlock(&tcon->tc_lock); - return 0; - } tcon->status = TID_IN_TCON; spin_unlock(&tcon->tc_lock);

diff --git a/fs/smb/client/dfs.c b/fs/smb/client/dfs.c index 2f93bf8c3325..2390b2fedd6a 100644 --- a/fs/smb/client/dfs.c +++ b/fs/smb/client/dfs.c @@ -575,16 +575,17 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru

/* only send once per connect */ spin_lock(&tcon->tc_lock); + if (tcon->status == TID_GOOD) { + spin_unlock(&tcon->tc_lock); + return 0; + } + if (tcon->status != TID_NEW && tcon->status != TID_NEED_TCON) { spin_unlock(&tcon->tc_lock); return -EHOSTDOWN; }

- if (tcon->status == TID_GOOD) { - spin_unlock(&tcon->tc_lock); - return 0; - } tcon->status = TID_IN_TCON; spin_unlock(&tcon->tc_lock);