releases/4.19.29/cifs-fix-computation-for-max_smb2_hdr_size.patch

   1 From 708dcff14a4fe200f029e6c41f24d96457bdcc88 Mon Sep 17 00:00:00 2001
   2 From: Ronnie Sahlberg <lsahlber@redhat.com>
   3 Date: Tue, 29 Jan 2019 12:46:16 +1000
   4 Subject: cifs: fix computation for MAX_SMB2_HDR_SIZE
   5
   6 [ Upstream commit 58d15ed1203f4d858c339ea4d7dafa94bd2a56d3 ]
   7
   8 The size of the fixed part of the create response is 88 bytes not 56.
   9
  10 Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
  11 Signed-off-by: Steve French <stfrench@microsoft.com>
  12 Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
  13 Signed-off-by: Sasha Levin <sashal@kernel.org>
  14 ---
  15  fs/cifs/smb2pdu.h | 4 ++--
  16  1 file changed, 2 insertions(+), 2 deletions(-)
  17
  18 diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
  19 index 8fb7887f2b3d..437257d1116f 100644
  20 --- a/fs/cifs/smb2pdu.h
  21 +++ b/fs/cifs/smb2pdu.h
  22 @@ -84,8 +84,8 @@
  23
  24  #define NUMBER_OF_SMB2_COMMANDS        0x0013
  25
  26 -/* 4 len + 52 transform hdr + 64 hdr + 56 create rsp */
  27 -#define MAX_SMB2_HDR_SIZE 0x00b0
  28 +/* 52 transform hdr + 64 hdr + 88 create rsp */
  29 +#define MAX_SMB2_HDR_SIZE 204
  30
  31  #define SMB2_PROTO_NUMBER cpu_to_le32(0x424d53fe)
  32  #define SMB2_TRANSFORM_PROTO_NUM cpu_to_le32(0x424d53fd)
  33 --
  34 2.19.1
  35