From: Steve French <smfrench@xxxxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit c2afb8147e69819885493edf3a7c1ce03aaf2d4e upstream.
Signed-off-by: Steve French <steve.french@xxxxxxxxxxxxxxx>
Reported-by: David Goebel <davidgoe@xxxxxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
fs/cifs/smb2pdu.c | 5 +++++
fs/cifs/smb2pdu.h | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index ac76b1dab3b8..1a6dde4bce62 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -566,6 +566,7 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
char *security_blob;
char *ntlmssp_blob = NULL;
bool use_spnego = false; /* else use raw ntlmssp */
+ u64 previous_session = ses->Suid;
cifs_dbg(FYI, "Session Setup\n");
@@ -602,6 +603,10 @@ 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->VcNumber = 0; /* MBZ */
/* to enable echos and oplocks */
req->hdr.CreditRequest = cpu_to_le16(3);
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 6133a4e45c6e..efcc77b51556 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -228,7 +228,7 @@ struct smb2_sess_setup_req {
__le32 Channel;
__le16 SecurityBufferOffset;
__le16 SecurityBufferLength;
- __le64 PreviousSessionId;
+ __u64 PreviousSessionId;
__u8 Buffer[1]; /* variable length GSS security buffer */
} __packed;
--
2.10.2
--
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