linux-kernel - Re: [PATCH v2] nbd: Fix memory leak in nbd_add

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Date:   Mon, 22 Jun 2020 09:52:22 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Zheng Bin <zhengbin13@...wei.com>, linux-block@...r.kernel.org
Cc:     nbd@...er.debian.org, Aditya Pakki <pakki001@....edu>,
        Navid Emamdoost <emamd001@....edu>, Kangjie Lu <kjlu@....edu>,
        Stephen McCamant <mccamant@...umn.edu>,
        Qiushi Wu <wu000273@....edu>, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        Josef Bacik <josef@...icpanda.com>,
        Tuomas Tynkkynen <tuomas.tynkkynen@....fi>,
        Yi Zhang <yi.zhang@...wei.com>
Subject: Re: [PATCH v2] nbd: Fix memory leak in nbd_add_socket

>> Can an other wording variant be nicer?
>
> em, how about this?
>
>
> When adding first socket to nbd,

How do you think about to replace abbreviations by terms?

> if nsock's allocation fails,

… failed,

> config->socks is malloced

The data structure member “config->socks” was reallocated.

> but num_connections does not update,

But the data structure member “config->num_connections” was not updated.

> memory leak will occur(Function
> nbd_config_put will only free config->socks when num_connections is not 0).

A memory leak will occur then because the function “nbd_config_put”
will free “config->socks” only when “num_connections” is not zero.

Would you like to add an imperative wording to the commit message?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?id=625d3449788f85569096780592549d0340e9c0c7#n151

Regards,
Markus