{
void *xdp_frame_end = xdp->data_hard_start + sizeof(struct xdp_frame);
unsigned long metalen = xdp_get_metalen(xdp);
- void *data_start = xdp->data_hard_start + metalen;
+ void *data_start = xdp_frame_end + metalen;
void *data = xdp->data + offset;
if (unlikely(data < data_start ||
data > xdp->data_end - ETH_HLEN))
return -EINVAL;
- /* Avoid info leak, when reusing area prev used by xdp_frame */
- if (data < xdp_frame_end) {
- unsigned long clearlen = xdp_frame_end - data;
-
- memset(data, 0, clearlen);
- }
-
if (metalen)
memmove(xdp->data_meta + offset,
xdp->data_meta, metalen);
BPF_CALL_2(bpf_xdp_adjust_meta, struct xdp_buff *, xdp, int, offset)
{
+ void *xdp_frame_end = xdp->data_hard_start + sizeof(struct xdp_frame);
void *meta = xdp->data_meta + offset;
unsigned long metalen = xdp->data - meta;
if (xdp_data_meta_unsupported(xdp))
return -ENOTSUPP;
- if (unlikely(meta < xdp->data_hard_start ||
+ if (unlikely(meta < xdp_frame_end ||
meta > xdp->data))
return -EINVAL;
if (unlikely((metalen & (sizeof(__u32) - 1)) ||