Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Arnd Bergmann <arnd@arndb.de>, Steve French <smfrench@gmail.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.9 280/293] cifs: silence compiler warnings
 showing up with gcc-8.0.0
Thread-Topic: [PATCH AUTOSEL for 4.9 280/293] cifs: silence compiler warnings
 showing up with gcc-8.0.0
Thread-Index: AQHTz5lqbFn/rkDrrUG/fAEsCrDBFQ==
Date:   Mon, 9 Apr 2018 00:26:34 +0000
Message-ID: <20180409002239.163177-280-alexander.levin@microsoft.com>
References: <20180409002239.163177-1-alexander.levin@microsoft.com>
In-Reply-To: <20180409002239.163177-1-alexander.levin@microsoft.com>
Accept-Language: en-US
Content-Language: en-US
received-spf: None (protection.outlook.com: microsoft.com does not designate
 permitted sender hosts)
spamdiagnosticoutput: 1:99
spamdiagnosticmetadata: NSPM
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: acac5e02-07da-4b87-df52-08d59db1aec6
X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:26:34.7696
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0984
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit ade7db991b47ab3016a414468164f4966bd08202 ]

This bug was fixed before, but came up again with the latest
compiler in another function:

fs/cifs/cifssmb.c: In function 'CIFSSMBSetEA':
fs/cifs/cifssmb.c:6362:3: error: 'strncpy' offset 8 is out of the bounds [0=
, 4] [-Werror=3Darray-bounds]
   strncpy(parm_data->list[0].name, ea_name, name_len);

Let's apply the same fix that was used for the other instances.

Fixes: b2a3ad9ca502 ("cifs: silence compiler warnings showing up with gcc-4=
.7.0")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 fs/cifs/cifssmb.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index cc420d6b71f7..d57222894892 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -6413,9 +6413,7 @@ SetEARetry:
 	pSMB->InformationLevel =3D
 		cpu_to_le16(SMB_SET_FILE_EA);
=20
-	parm_data =3D
-		(struct fealist *) (((char *) &pSMB->hdr.Protocol) +
-				       offset);
+	parm_data =3D (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset;
 	pSMB->ParameterOffset =3D cpu_to_le16(param_offset);
 	pSMB->DataOffset =3D cpu_to_le16(offset);
 	pSMB->SetupCount =3D 1;
--=20
2.15.1