[PATCH][SMB3] fix multiuser mount regression

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cifssmb3: fix incorrect session setup check for multiuser mounts

A recent change to how the SMB3 server (socket) and session status
is managed regressed multiuser mounts by changing the check
for whether session setup is needed to the socket (TCP_Server_info)
structure instead of the session struct (cifs_ses). Add additional
check in cifs_setup_sesion to fix this.

Fixes: 73f9bfbe3d81 ("cifs: maintain a state machine for tcp/smb/tcon sessions")
Reported-by: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
---
 fs/cifs/connect.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 053cb449eb16..d3020abfe404 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3924,7 +3924,8 @@ cifs_setup_session(const unsigned int xid,
struct cifs_ses *ses,

  /* only send once per connect */
  spin_lock(&cifs_tcp_ses_lock);
- if (server->tcpStatus != CifsNeedSessSetup) {
+ if ((server->tcpStatus != CifsNeedSessSetup) &&
+     (ses->status == CifsGood)) {
  spin_unlock(&cifs_tcp_ses_lock);
  return 0;
  }

-- 
Thanks,

Steve
From 6567400dc936ca8add39be36af34c8722671f8ef Mon Sep 17 00:00:00 2001
From: Steve French <stfrench@xxxxxxxxxxxxx>
Date: Wed, 16 Mar 2022 22:08:43 -0500
Subject: [PATCH] smb3: fix incorrect session setup check for multiuser mounts

A recent change to how the SMB3 server (socket) and session status
is managed regressed multiuser mounts by changing the check
for whether session setup is needed to the socket (TCP_Server_info)
structure instead of the session struct (cifs_ses). Add additional
check in cifs_setup_sesion to fix this.

Fixes: 73f9bfbe3d81 ("cifs: maintain a state machine for tcp/smb/tcon sessions")
Reported-by: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
---
 fs/cifs/connect.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 053cb449eb16..d3020abfe404 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3924,7 +3924,8 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 
 	/* only send once per connect */
 	spin_lock(&cifs_tcp_ses_lock);
-	if (server->tcpStatus != CifsNeedSessSetup) {
+	if ((server->tcpStatus != CifsNeedSessSetup) &&
+	    (ses->status == CifsGood)) {
 		spin_unlock(&cifs_tcp_ses_lock);
 		return 0;
 	}
-- 
2.32.0


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