netdev - Re: [PATCH] mwifiex: fix memory leak on regd when chan is zero

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Date:   Thu, 15 Sep 2016 18:26:26 +0100
From:   Colin Ian King <colin.king@...onical.com>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     Amitkumar Karwar <akarwar@...vell.com>,
        Nishant Sarmukadam <nishants@...vell.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mwifiex: fix memory leak on regd when chan is zero

On 15/09/16 18:10, Kalle Valo wrote:
> Colin King <colin.king@...onical.com> writes:
> 
>> From: Colin Ian King <colin.king@...onical.com>
>>
>> When chan is zero mwifiex_create_custom_regdomain does not kfree
>> regd and we have a memory leak. Fix this by freeing regd before
>> the return.
>>
>> Signed-off-by: Colin Ian King <colin.king@...onical.com>
>> ---
>>  drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c | 4 +++-
>>  1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c b/drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c
>> index 3344a26..15a91f3 100644
>> --- a/drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c
>> +++ b/drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c
>> @@ -1049,8 +1049,10 @@ mwifiex_create_custom_regdomain(struct mwifiex_private *priv,
>>  		enum nl80211_band band;
>>  
>>  		chan = *buf++;
>> -		if (!chan)
>> +		if (!chan) {
>> +			kfree(regd);
>>  			return NULL;
>> +		}
> 
> Bob sent a similar fix and he also did more:
> 
> mwifiex: fix error handling in mwifiex_create_custom_regdomain
> 
> https://patchwork.kernel.org/patch/9331337/
> 
Ah, sorry for the duplication noise.

Colin