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fs/cifs: fix uninitialised variable warnings

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[ Upstream commit ef2298a06d012973bbc592b86fe5ff730d4d0c63 ]

In some error conditions, resp_buftype can be passed uninitialised to
free_rsp_buf(), potentially resulting in a spurious debug message.
If resp_buftype randomly had the value 1 (CIFS_SMALL_BUFFER) then this
would log a debug message.
The rsp pointer is initialised to NULL so there is no other side-effect.

Detected by CoverityScan, CID 1438585 ("Uninitialized scalar variable")
Detected by CoverityScan, CID 1438667 ("Uninitialized scalar variable")
Detected by CoverityScan, CID 1438764 ("Uninitialized scalar variable")

Signed-off-by: Garry McNulty <garrmcnu@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Garry McNulty 2018-10-03 20:51:21 +01:00 committed by Greg Kroah-Hartman
parent c5621fbd65
commit 6c2075f792
1 changed files with 3 additions and 3 deletions
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6
fs/cifs/smb2pdu.c
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@ -2283,7 +2283,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
struct cifs_ses *ses = tcon->ses;
struct kvec iov[SMB2_CREATE_IOV_SIZE];
struct kvec rsp_iov = {NULL, 0};
int resp_buftype;
int resp_buftype = CIFS_NO_BUFFER;
int rc = 0;
int flags = 0;
@ -2570,7 +2570,7 @@ SMB2_close_flags(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_ses *ses = tcon->ses;
struct kvec iov[1];
struct kvec rsp_iov;
int resp_buftype;
int resp_buftype = CIFS_NO_BUFFER;
int rc = 0;
cifs_dbg(FYI, "Close\n");
@ -2723,7 +2723,7 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon,
struct kvec iov[1];
struct kvec rsp_iov;
int rc = 0;
int resp_buftype;
int resp_buftype = CIFS_NO_BUFFER;
struct cifs_ses *ses = tcon->ses;
int flags = 0;