Re: [patch] [media] em28xx: use after free in em28xx_v4l2_close()

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On Tue, Aug 14, 2012 at 8:05 AM, Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:
> On Tue, Aug 14, 2012 at 07:50:12AM -0300, Ezequiel Garcia wrote:
>> Hi Dan,
>>
>> On Tue, Aug 14, 2012 at 3:58 AM, Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:
>> > We need to move the unlock before the kfree(dev);
>> >
>> > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>> > ---
>> > Applies to linux-next.
>> >
>> > diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
>> > index ecb23df..78d6ebd 100644
>> > --- a/drivers/media/video/em28xx/em28xx-video.c
>> > +++ b/drivers/media/video/em28xx/em28xx-video.c
>> > @@ -2264,9 +2264,9 @@ static int em28xx_v4l2_close(struct file *filp)
>> >                 if (dev->state & DEV_DISCONNECTED) {
>> >                         em28xx_release_resources(dev);
>>
>> Why not unlocking here?
>
> I don't see a reason to prefer one over the other.
>

Mmm, I see now what you mean,

Thanks and sorry for dumb question,
Ezequiel.
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