lkml.org 
[lkml]   [2017]   [Apr]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2] [media] vb2: Fix an off by one error in 'vb2_plane_vaddr'
On Fri, Apr 28, 2017 at 06:51:40AM +0200, Christophe JAILLET wrote:
> We should ensure that 'plane_no' is '< vb->num_planes' as done in
> 'vb2_plane_cookie' just a few lines below.
>
> Cc: stable@vger.kernel.org
> Fixes: e23ccc0ad925 ("[media] v4l: add videobuf2 Video for Linux 2 driver framework")
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> v2: add CC and Fixes tags
> ---
> drivers/media/v4l2-core/videobuf2-core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
> index 94afbbf92807..c0175ea7e7ad 100644
> --- a/drivers/media/v4l2-core/videobuf2-core.c
> +++ b/drivers/media/v4l2-core/videobuf2-core.c
> @@ -868,7 +868,7 @@ EXPORT_SYMBOL_GPL(vb2_core_create_bufs);
>
> void *vb2_plane_vaddr(struct vb2_buffer *vb, unsigned int plane_no)
> {
> - if (plane_no > vb->num_planes || !vb->planes[plane_no].mem_priv)
> + if (plane_no >= vb->num_planes || !vb->planes[plane_no].mem_priv)
> return NULL;
>
> return call_ptr_memop(vb, vaddr, vb->planes[plane_no].mem_priv);

Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>

--
Sakari Ailus
e-mail: sakari.ailus@iki.fi XMPP: sailus@retiisi.org.uk

\
 
 \ /
  Last update: 2017-04-28 10:18    [W:1.139 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site