linux-kernel - Re: [PATCH v2] um: vector: Fix memory leak in vector

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Message-ID: <7bd5ca75-5e97-5afb-5da2-fd35d7ef8b80@cambridgegreys.com>
Date:   Wed, 4 Jan 2023 08:29:47 +0000
From:   Anton Ivanov <anton.ivanov@...bridgegreys.com>
To:     Miaoqian Lin <linmq006@...il.com>,
        Richard Weinberger <richard@....at>,
        Johannes Berg <johannes@...solutions.net>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-um@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] um: vector: Fix memory leak in vector_config



On 04/01/2023 08:14, Miaoqian Lin wrote:
> kstrdup() return newly allocated copy of the string.
> Call kfree() to release the memory when uml_parse_vector_ifspec() fails.
> 
> Fixes: 49da7e64f33e ("High Performance UML Vector Network Driver")
> Signed-off-by: Miaoqian Lin <linmq006@...il.com>
> ---
> changes in v2:
> - only call kfree() when uml_parse_vector_ifspec() fails.
> ---
>   arch/um/drivers/vector_kern.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
> index ded7c47d2fbe..131b7cb29576 100644
> --- a/arch/um/drivers/vector_kern.c
> +++ b/arch/um/drivers/vector_kern.c
> @@ -767,6 +767,7 @@ static int vector_config(char *str, char **error_out)
>   
>   	if (parsed == NULL) {
>   		*error_out = "vector_config failed to parse parameters";
> +		kfree(params);
>   		return -EINVAL;
>   	}
>   

Acked-By: Anton Ivanov <anton.ivanov@...bridgegreys.com>

-- 
Anton R. Ivanov
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