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From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
To: Shuah Khan <shuah@kernel.org>
Cc: Valentina Manea <valentina.manea.m@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
	Shuah Khan <shuahkh@osg.samsung.com>
Subject: Re: [PATCH] usbip: vudc: check for NULL before use
Date: Wed, 21 Dec 2016 13:33:15 +0000	[thread overview]
Message-ID: <20161221133315.GA13517@sudip-tp> (raw)
In-Reply-To: <f21975fa-1a59-29cc-843d-550866d55345@kernel.org>

On Tue, Dec 20, 2016 at 07:31:44AM -0700, Shuah Khan wrote:
> On 12/18/2016 03:44 PM, Sudip Mukherjee wrote:
> > to_vep() is doing a container_of() on _ep. It is better to do the NULL
> > check first and then use it.
> > 
> > Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
> > ---
> >  drivers/usb/usbip/vudc_dev.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c
> > index 968471b..32ea604 100644
> > --- a/drivers/usb/usbip/vudc_dev.c
> > +++ b/drivers/usb/usbip/vudc_dev.c
> > @@ -388,10 +388,10 @@ static int vep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
> >  	unsigned long flags;
> >  	int ret = 0;
> >  
> > -	ep = to_vep(_ep);
> >  	if (!_ep)
> >  		return -EINVAL;
> 
> Hmm. Linus's latest checks _ep and _req. Are you sure you are working
> with the latest tree?

I checked with next-20161221 and its still there.

regards
sudip

  reply	other threads:[~2016-12-21 13:34 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-18 22:44 Sudip Mukherjee
2016-12-20 14:31 ` Shuah Khan
2016-12-21 13:33   ` Sudip Mukherjee [this message]
2016-12-21 14:38     ` Shuah Khan
2016-12-21 15:02       ` Krzysztof Opasiak
2016-12-21 16:11       ` Sudip Mukherjee

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