linux-kernel - Re: [PATCH 1/1] Drivers: hv: use kmalloc

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Message-ID: <20251128071524.GA69390@liuwe-devbox-debian-v2.local>
Date: Fri, 28 Nov 2025 07:15:24 +0000
From: Wei Liu <wei.liu@...nel.org>
To: Gongwei Li <13875017792@....com>
Cc: kys@...rosoft.com, haiyangz@...rosoft.com, wei.liu@...nel.org,
	decui@...rosoft.com, linux-hyperv@...r.kernel.org,
	linux-kernel@...r.kernel.org, Gongwei Li <ligongwei@...inos.cn>
Subject: Re: [PATCH 1/1] Drivers: hv: use kmalloc_array() instead of kmalloc()

On Fri, Nov 21, 2025 at 11:10:41AM +0800, Gongwei Li wrote:
> From: Gongwei Li <ligongwei@...inos.cn>
> 
> Replace kmalloc() with kmalloc_array() to prevent potential
> overflow, as recommended in Documentation/process/deprecated.rst.
> 
> Signed-off-by: Gongwei Li <ligongwei@...inos.cn>

Applied to hyperv-next. Thanks.

> ---
>  drivers/hv/hv_util.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
> index 36ee89c0358b..7e9c8e169c66 100644
> --- a/drivers/hv/hv_util.c
> +++ b/drivers/hv/hv_util.c
> @@ -586,7 +586,7 @@ static int util_probe(struct hv_device *dev,
>  		(struct hv_util_service *)dev_id->driver_data;
>  	int ret;
>  
> -	srv->recv_buffer = kmalloc(HV_HYP_PAGE_SIZE * 4, GFP_KERNEL);
> +	srv->recv_buffer = kmalloc_array(4, HV_HYP_PAGE_SIZE, GFP_KERNEL);
>  	if (!srv->recv_buffer)
>  		return -ENOMEM;
>  	srv->channel = dev->channel;
> -- 
> 2.25.1
>