linux-kernel - Re: [PATCH] staging: rtl8712: rtl871x_ioctl

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Date:	Tue, 3 Jun 2014 00:09:51 +0200
From:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	Larry Finger <Larry.Finger@...inger.net>,
	Florian Schilhabel <florian.c.schilhabel@...glemail.com>,
	devel@...verdev.osuosl.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Thomas Cort <linuxgeek@...il.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH] staging: rtl8712: rtl871x_ioctl_linux.c: Cleaning up
 memory leak

Hi

Okay, this code has been changed in linux-next, before the allocation
before the switch statement.

Yes, I repeat it to myself..  I'll check everything against linux-next
in the future!


Best regards
Rickard Strandqvist


2014-06-02 10:41 GMT+02:00 Dan Carpenter <dan.carpenter@...cle.com>:
> On Sun, Jun 01, 2014 at 01:30:43PM +0200, Rickard Strandqvist wrote:
>> There is a risk for memory leak in when something unexpected happens
>> and the function returns.
>>
>> This was largely found by using a static code analysis program called cppcheck.
>>
>> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
>> ---
>>  drivers/staging/rtl8712/rtl871x_ioctl_linux.c |    1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
>> index 23d539d..27e0243 100644
>> --- a/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
>> +++ b/drivers/staging/rtl8712/rtl871x_ioctl_linux.c
>> @@ -1822,6 +1822,7 @@ static int r871x_wx_set_enc_ext(struct net_device *dev,
>>               alg_name = "CCMP";
>>               break;
>>       default:
>> +             kfree(param);
>
> Wat?  Param isn't even allocated at this point.  It gets allocated a
> couple lines later.
>
> regards,
> dan carpenter
>
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