4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Steve French stfrench@microsoft.com
commit b2adf22fdfba85a6701c481faccdbbb3a418ccfc upstream.
The server detects reconnect by the (non-zero) value in PreviousSessionId of SMB2/SMB3 SessionSetup request, but this behavior regressed due to commit 166cea4dc3a4f66f020cfb9286225ecd228ab61d ("SMB2: Separate RawNTLMSSP authentication from SMB2_sess_setup")
CC: Stable stable@vger.kernel.org CC: Sachin Prabhu sprabhu@redhat.com Signed-off-by: Steve French smfrench@gmail.com Reviewed-by: Ronnie Sahlberg lsahlber@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/cifs/smb2pdu.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1004,6 +1004,7 @@ SMB2_sess_setup(const unsigned int xid, sess_data->ses = ses; sess_data->buf0_type = CIFS_NO_BUFFER; sess_data->nls_cp = (struct nls_table *) nls_cp; + sess_data->previous_session = ses->Suid;
while (sess_data->func) sess_data->func(sess_data);