4.8-stable review patch. If anyone has any objections, please let me know.
------------------ From: Steve French <[email protected]> commit c2afb8147e69819885493edf3a7c1ce03aaf2d4e upstream. Signed-off-by: Steve French <[email protected]> Reported-by: David Goebel <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/cifs/smb2pdu.c | 5 +++++ fs/cifs/smb2pdu.h | 2 +- 2 files changed, 6 insertions(+), 1 deletion(-) --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -604,6 +604,7 @@ SMB2_sess_setup(const unsigned int xid, char *security_blob = NULL; unsigned char *ntlmssp_blob = NULL; bool use_spnego = false; /* else use raw ntlmssp */ + u64 previous_session = ses->Suid; cifs_dbg(FYI, "Session Setup\n"); @@ -641,6 +642,10 @@ ssetup_ntlmssp_authenticate: return rc; req->hdr.SessionId = 0; /* First session, not a reauthenticate */ + + /* if reconnect, we need to send previous sess id, otherwise it is 0 */ + req->PreviousSessionId = previous_session; + req->Flags = 0; /* MBZ */ /* to enable echos and oplocks */ req->hdr.CreditRequest = cpu_to_le16(3); --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -276,7 +276,7 @@ struct smb2_sess_setup_req { __le32 Channel; __le16 SecurityBufferOffset; __le16 SecurityBufferLength; - __le64 PreviousSessionId; + __u64 PreviousSessionId; __u8 Buffer[1]; /* variable length GSS security buffer */ } __packed;
