linux-kernel - Re: [PATCH][next] xen/gntdev: remove redundant non-zero check on ret

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:   Mon, 11 Nov 2019 14:17:57 +0100
From:   Jürgen Groß <jgross@...e.com>
To:     Colin Ian King <colin.king@...onical.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        xen-devel@...ts.xenproject.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] xen/gntdev: remove redundant non-zero check on ret

On 11.11.19 13:31, Colin Ian King wrote:
> On 11/11/2019 12:25, Jürgen Groß wrote:
>> On 11.11.19 13:20, Colin King wrote:
>>> From: Colin Ian King <colin.king@...onical.com>
>>>
>>> The non-zero check on ret is always going to be false because
>>> ret was initialized as zero and the only place it is set to
>>> non-zero contains a return path before the non-zero check. Hence
>>> the check is redundant and can be removed.
>>
>> Which version did you patch against? In current master the above
>> statement is not true.
> 
> against today's linux-next

Ah, okay, this is likely the result of the recent mm-notifier patch
series. I'll put this patch on hold until the recent patches have
hit master.


Juergen