Add a sanity check to make sure drivers do not adjust the number of buffers or planes above the supported limit on reqbufs. Signed-off-by: Pawel Osciak <pawel@xxxxxxxxxx> --- drivers/media/video/videobuf2-core.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/media/video/videobuf2-core.c b/drivers/media/video/videobuf2-core.c index 6698c77..6e69584 100644 --- a/drivers/media/video/videobuf2-core.c +++ b/drivers/media/video/videobuf2-core.c @@ -529,6 +529,11 @@ int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req) if (ret) return ret; + /* + * Make sure driver did not request more buffers/planes than we can handle. + */ + BUG_ON (num_buffers > VIDEO_MAX_FRAME || num_planes > VIDEO_MAX_PLANES); + /* Finally, allocate buffers and video memory */ ret = __vb2_queue_alloc(q, req->memory, num_buffers, num_planes, plane_sizes); -- 1.7.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
