linux-kernel - Re: [PATCH 1/2] cifs: remove initialization value

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 4 Oct 2022 11:23:06 -0300
From:   Enzo Matsumiya <ematsumiya@...e.de>
To:     Muhammad Usama Anjum <usama.anjum@...labora.com>
Cc:     Steve French <sfrench@...ba.org>, Paulo Alcantara <pc@....nz>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        Shyam Prasad N <sprasad@...rosoft.com>,
        Tom Talpey <tom@...pey.com>, kernel@...labora.com,
        kernel-janitors@...r.kernel.org, linux-cifs@...r.kernel.org,
        samba-technical@...ts.samba.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] cifs: remove initialization value

Hi Usama,

On 10/04, Muhammad Usama Anjum wrote:
>Don't initialize the rc as its value is being overwritten before its
>use.

Being bitten by an unitialized variable bug as recent as 2 days ago, I'd
say this is a step backwards from the "best practices" POV.

>Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
>---
> fs/cifs/smb2pdu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
>index 0600f0a07628..2bf43c892ae6 100644
>--- a/fs/cifs/smb2pdu.c
>+++ b/fs/cifs/smb2pdu.c
>@@ -879,7 +879,7 @@ SMB2_negotiate(const unsigned int xid,
> 	struct smb2_negotiate_rsp *rsp;
> 	struct kvec iov[1];
> 	struct kvec rsp_iov;
>-	int rc = 0;
>+	int rc;
> 	int resp_buftype;
> 	int blob_offset, blob_length;
> 	char *security_blob;
>-- 
>2.30.2

Cheers,

Enzo