linux-kernel - Re: [PATCH] staging: r8188eu: os_dep: use kmemdup instead of kzalloc and memcpy

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Message-ID: <YTCXef5o9JHtQhuD@kroah.com>
Date:   Thu, 2 Sep 2021 11:20:57 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Saurav Girepunje <saurav.girepunje@...il.com>
Cc:     Larry.Finger@...inger.net, phil@...lpotter.co.uk,
        straube.linux@...il.com, martin@...ser.cx,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        saurav.girepunje@...mail.com
Subject: Re: [PATCH] staging: r8188eu: os_dep: use kmemdup instead of kzalloc
 and memcpy

On Sat, Aug 28, 2021 at 11:47:51PM +0530, Saurav Girepunje wrote:
> Fixes coccicheck warning:WARNING opportunity for kmemdup in ioctl_linux.c
> 
> Signed-off-by: Saurav Girepunje <saurav.girepunje@...il.com>
> ---
>  drivers/staging/r8188eu/os_dep/ioctl_linux.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/os_dep/ioctl_linux.c b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
> index 81d4255d1785..495fadd2b8c8 100644
> --- a/drivers/staging/r8188eu/os_dep/ioctl_linux.c
> +++ b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
> @@ -585,14 +585,12 @@ static int rtw_set_wpa_ie(struct adapter *padapter, char *pie, unsigned short ie
>  	}
> 
>  	if (ielen) {
> -		buf = kzalloc(ielen, GFP_KERNEL);
> +		buf = kmemdup(pie, ielen, GFP_KERNEL);
>  		if (!buf) {
>  			ret =  -ENOMEM;
>  			goto exit;
>  		}
> 
> -		memcpy(buf, pie, ielen);
> -
>  		/* dump */
>  		{
>  			int i;
> --
> 2.32.0
> 
> 

This patch never showed up on lore.kernel.org for some reason.  Please
resend and see if it was a mailing issue on your side...

thanks,

greg k-h