Commit ee1806be authored by Dafna Hirschfeld's avatar Dafna Hirschfeld Committed by Mauro Carvalho Chehab
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media: videobuf2: add WARN_ON_ONCE if bytesused is bigger than buffer length 



In function vb2_set_plane_payload, report if the given bytesused is
bigger than the buffer size, and clamp it to the buffer size.

Signed-off-by: default avatarDafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 05fd87b8

include/media/videobuf2-core.h

+8 −1
Original line number Diff line number Diff line
@@ -1155,9 +1155,16 @@ static inline void *vb2_get_drv_priv(struct vb2_queue *q) 
static inline void vb2_set_plane_payload(struct vb2_buffer *vb,

				 unsigned int plane_no, unsigned long size)

{

	if (plane_no < vb->num_planes)

	/*

	 * size must never be larger than the buffer length, so

	 * warn and clamp to the buffer length if that's the case.

	 */

	if (plane_no < vb->num_planes) {

		if (WARN_ON_ONCE(size > vb->planes[plane_no].length))

			size = vb->planes[plane_no].length;

		vb->planes[plane_no].bytesused = size;

	}

}



/**

 * vb2_get_plane_payload() - get bytesused for the plane plane_no