[PATCH AUTOSEL for 4.14 135/161] cifs: silence compiler warnings showing up with gcc-8.0.0

Sasha Levin
2018-04-09T00:26:17Z

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=array-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 35dc5bf01ee2..7fd39ea6e22e 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -6331,9 +6331,7 @@ SetEARetry:
pSMB->InformationLevel =
cpu_to_le16(SMB_SET_FILE_EA);

- parm_data =
- (struct fealist *) (((char *) &pSMB->hdr.Protocol) +
- offset);
+ parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset;
pSMB->ParameterOffset = cpu_to_le16(param_offset);
pSMB->DataOffset = cpu_to_le16(offset);
pSMB->SetupCount = 1;
--
2.15.1