X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=fs%2Fcifs%2Fsmb2pdu.c;h=0feb743894b84f583391bf028d29cd5bbeea5b47;hb=3c5f9be108783c05cade918d29c8711b236acb1d;hp=dc44610fdc0d722f70eaeeabbbd0f9ee462a698d;hpb=39552ea8120a699dbd0360848c4d949f9f0e6deb;p=cascardo%2Flinux.git

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index dc44610fdc0d..0feb743894b8 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -375,7 +375,12 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
 
 	req->Capabilities = cpu_to_le32(ses->server->vals->req_capabilities);
 
-	memcpy(req->ClientGUID, server->client_guid, SMB2_CLIENT_GUID_SIZE);
+	/* ClientGUID must be zero for SMB2.02 dialect */
+	if (ses->server->vals->protocol_id == SMB20_PROT_ID)
+		memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE);
+	else
+		memcpy(req->ClientGUID, server->client_guid,
+			SMB2_CLIENT_GUID_SIZE);
 
 	iov[0].iov_base = (char *)req;
 	/* 4 for rfc1002 length field */