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

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Date:   Sat, 4 Sep 2021 10:21:46 +0530
From:   Saurav Girepunje <saurav.girepunje@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
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 03/09/21 11:18 pm, SAURAV GIREPUNJE wrote:
> On 02 Sep 2021 11:20, Greg KH wrote:
>> 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
> 
> 
> Ok, I will resend this patch.
> 
> Thanks,
> Saurav Girepunje
> 

Hi Greg,

I have resend the patch, But the last patch also on lore.kernel.org
https://lore.kernel.org/all/YSp9z2%2FJmvHGhW5m@user/

Regards,
Saurav Girepunje