3.16.65-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <[email protected]>

Revert commit 36a0db05310fbee38b59fed7e1306c1a095f8c8f, a minimal
backport of commit cabfb3680f78981d26c078a26e5c748531257ebb upstream.
We need a complete backport to avoid a regression for SMB3
authenticated mounts.

Reported-by: Stephan Seitz <[email protected]>
References: https://lists.debian.org/debian-lts/2019/03/msg00071.html
Cc: Dan Aloni <[email protected]>
Signed-off-by: Ben Hutchings <[email protected]>
---
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -608,7 +608,6 @@ SMB2_sess_setup(const unsigned int xid,
         */
        kfree(ses->auth_key.response);
        ses->auth_key.response = NULL;
-       ses->auth_key.len = 0;
 
        /*
         * If memory allocation is successful, caller of this function
@@ -769,7 +768,6 @@ ssetup_exit:
                        rc = server->ops->generate_signingkey(ses);
                        kfree(ses->auth_key.response);
                        ses->auth_key.response = NULL;
-                       ses->auth_key.len = 0;
                        if (rc) {
                                cifs_dbg(FYI,
                                        "SMB3 session key generation failed\n");
@@ -794,7 +792,6 @@ keygen_exit:
        if (!server->sign) {
                kfree(ses->auth_key.response);
                ses->auth_key.response = NULL;
-               ses->auth_key.len = 0;
        }
        kfree(ses->ntlmssp);
 

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