linux-kernel - Re: [PATCH] net: dsa: return success if there was nothing to do

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]

Message-ID: <20220305203253.jso2wergnn5c7fsx@skbuf>
Date:   Sat, 5 Mar 2022 22:32:53 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     trix@...hat.com
Cc:     andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        davem@...emloft.net, kuba@...nel.org, nathan@...nel.org,
        ndesaulniers@...gle.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] net: dsa: return success if there was nothing to do

On Sat, Mar 05, 2022 at 09:14:48AM -0800, trix@...hat.com wrote:
> From: Tom Rix <trix@...hat.com>
> 
> Clang static analysis reports this representative issue
> dsa.c:486:2: warning: Undefined or garbage value
>   returned to caller
>   return err;
>   ^~~~~~~~~~
> 
> err is only set in the loop.  If the loop is empty,
> garbage will be returned.  So initialize err to 0
> to handle this noop case.
> 
> Signed-off-by: Tom Rix <trix@...hat.com>
> ---

Reviewed-by: Vladimir Oltean <olteanv@...il.com>