diff mbox series

fs/cifs: fix uninitialised variable warnings

Message ID 20181003195121.6059-1-garrmcnu@gmail.com
State New
Headers show
Series fs/cifs: fix uninitialised variable warnings | expand

Commit Message

Garry McNulty Oct. 3, 2018, 7:51 p.m. UTC 
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>
---
 fs/cifs/smb2pdu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Aurélien Aptel Oct. 4, 2018, 8:16 a.m. UTC | #1 
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Steve French Oct. 6, 2018, 12:28 a.m. UTC | #2 
merged into cifs-2.6.git for-next
On Thu, Oct 4, 2018 at 3:16 AM Aurélien Aptel <aaptel@suse.com> wrote:
>
> Reviewed-by: Aurelien Aptel <aaptel@suse.com>
> --
> Aurélien Aptel / SUSE Labs Samba Team
> GPG: 1839 CB5F 9F5B FB9B AA97  8C99 03C8 A49B 521B D5D3
> SUSE Linux GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
> GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
diff mbox series

Patch

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index f54d07bda067..65a864b8d09e 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2261,7 +2261,7 @@  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;
 
@@ -2547,7 +2547,7 @@  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");
@@ -2699,7 +2699,7 @@  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;