linux-kernel - Re: [PATCH bpf-next v3 2/2] libbpf: Fix the possible memory leak caused by obj->kconfig

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Message-ID: <20210710144248.GA1931@kadam>
Date:   Sat, 10 Jul 2021 17:42:48 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Shuyi Cheng <chengshuyi@...ux.alibaba.com>
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH bpf-next v3 2/2] libbpf: Fix the possible memory leak
 caused by obj->kconfig

On Fri, Jul 09, 2021 at 10:47:53AM +0800, Shuyi Cheng wrote:
> When obj->kconfig is NULL, ERR_PTR(-ENOMEM) should not be returned
> directly, err=-ENOMEM should be set, and then goto out.
> 

The commit message needs to say what the problem is that the patch is
fixing.  Here is a better commit message:

[PATCH bpf-next v3 2/2] libbpf: Fix the possible memory leak on error

If the strdup() fails then we need to call bpf_object__close(obj) to
avoid a resource leak.

Add a Fixes tag as well.

regards,
dan carpenter