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Commit d5ac225c authored by Dan Carpenter's avatar Dan Carpenter Committed by Mauro Carvalho Chehab
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media: cpia2: Fix a couple off by one bugs 



The cam->buffers[] array has cam->num_frames elements so the > needs to
be changed to >= to avoid going beyond the end of the array.  The
->buffers[] array is allocated in cpia2_allocate_buffers() if you want
to confirm.

Fixes: ab33d507 ("V4L/DVB (3376): Add cpia2 camera support")

Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent a95d811e

drivers/media/usb/cpia2/cpia2_v4l.c

+2 −2
Original line number Diff line number Diff line
@@ -808,7 +808,7 @@ static int cpia2_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf) 
	struct camera_data *cam = video_drvdata(file);



	if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||

	   buf->index > cam->num_frames)

	   buf->index >= cam->num_frames)

		return -EINVAL;



	buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
@@ -859,7 +859,7 @@ static int cpia2_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) 


	if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||

	   buf->memory != V4L2_MEMORY_MMAP ||

	   buf->index > cam->num_frames)

	   buf->index >= cam->num_frames)

		return -EINVAL;



	DBG("QBUF #%d\n", buf->index);