linux-kernel - Re: [PATCH 37/57] staging: rtl8188eu: os_dep: ioctl_linux: Move 2 large data buffers into the heap

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Date:   Thu, 15 Apr 2021 08:25:56 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linux-kernel@...r.kernel.org,
        Larry Finger <Larry.Finger@...inger.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev
Subject: Re: [PATCH 37/57] staging: rtl8188eu: os_dep: ioctl_linux: Move 2
 large data buffers into the heap

On Thu, Apr 15, 2021 at 08:20:16AM +0300, Dan Carpenter wrote:
> On Wed, Apr 14, 2021 at 07:11:09PM +0100, Lee Jones wrote:
> > ---
> >  drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 12 +++++++++++-
> >  1 file changed, 11 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
> > index c95ae4d6a3b6b..cc14f00947781 100644
> > --- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
> > +++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
> > @@ -224,7 +224,7 @@ static char *translate_scan(struct adapter *padapter,
> >  	/* parsing WPA/WPA2 IE */
> >  	{
> >  		u8 *buf;
> > -		u8 wpa_ie[255], rsn_ie[255];
> > +		u8 *wpa_ie, *rsn_ie;
> >  		u16 wpa_len = 0, rsn_len = 0;
> >  		u8 *p;
> >  
> > @@ -232,6 +232,14 @@ static char *translate_scan(struct adapter *padapter,
> >  		if (!buf)
> >  			return start;

Arnd, added this return...  I don't understand why we aren't returning
-ENOMEM here.

> >  
> > +		wpa_ie = kzalloc(255, GFP_ATOMIC);
> > +		if (!wpa_ie)
> > +			return start;
> 
> kfree(buf);
> 
> > +
> > +		rsn_ie = kzalloc(255, GFP_ATOMIC);
> > +		if (!rsn_ie)
> > +			return start;
> 

regards,
dan carpenter