4.14-stable review patch. If anyone has any objections, please let me know.
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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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/cifs/cifssmb.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
--- 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;