Patch "SMB3: Warn user if trying to sign connection that authenticated as guest" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

SMB3: Warn user if trying to sign connection that authenticated as guest

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
smb3-warn-user-if-trying-to-sign-connection-that-authenticated-as-guest.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Steve French <[email protected]>
Date: Tue, 19 Sep 2017 18:40:03 -0500
Subject: SMB3: Warn user if trying to sign connection that authenticated as guest

From: Steve French <[email protected]>

commit c721c38957fb19982416f6be71aae7b30630d83b upstream.

It can be confusing if user ends up authenticated as guest but they requested signing (server will return error validating signed packets) so add log message for this.

---
 fs/cifs/smb2pdu.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -1010,6 +1010,8 @@ SMB2_sess_setup(const unsigned int xid,
 	while (sess_data->func)
 		sess_data->func(sess_data);
 
+	if ((ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) && (ses->sign))
+		cifs_dbg(VFS, "signing requested but authenticated as guest\n");
 	rc = sess_data->result;
 out:
 	kfree(sess_data);

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/cifs-release-cifs-root_cred-after-exit_cifs.patch queue-4.9/smb3-warn-user-if-trying-to-sign-connection-that-authenticated-as-guest.patch queue-4.9/smb3-don-t-ignore-o_sync-o_dsync-and-o_direct-flags.patch queue-4.9/fix-smb3.1.1-guest-authentication-to-samba.patch queue-4.9/cifs-release-auth_key.response-for-reconnect.patch queue-4.9/smb-validate-negotiate-to-protect-against-downgrade-even-if-signing-off.patch