From: Paulo Alcantara <paulo@paulo.ac>
Date: Wed, 13 Jun 2018 13:54:14 -0300
Subject: [PATCH] cifs: Fix encryption/signing
Git-commit: cd2dca60be6f4742b63373fd7e4b445c8a634e51
Patch-mainline: v4.18-rc1
References: bsc#1144333

Since the rfc1002 generation was moved down to __smb_send_rqst(),
the transform header is now in rqst->rq_iov[0].

Correctly assign the transform header pointer in crypt_message().

Signed-off-by: Paulo Alcantara <palcantara@suse.de>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Aurelien Aptel <aaptel@suse.com>
---
 fs/cifs/smb2ops.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 9153407f97e8..c3648e9b5ec7 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -2187,7 +2187,7 @@ static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
 }
 
 /* Assumes:
- * rqst->rq_iov[0]  is tranform header
+ * rqst->rq_iov[0]  is transform header
  * rqst->rq_iov[1+] data to be encrypted/decrypted
  */
 static struct scatterlist *
@@ -2249,7 +2249,7 @@ static int
 crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
 {
 	struct smb2_transform_hdr *tr_hdr =
-			(struct smb2_transform_hdr *)rqst->rq_iov[1].iov_base;
+			(struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
 	unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
 	int rc = 0;
 	struct scatterlist *sg;
-- 
2.16.4