Re: old NLMSG_OK fix

["David S. Miller" <davem@xxxxxxxxxx>]

On Sun, 27 Jun 2004 19:15:52 +0200
Christoph Hellwig <hch@xxxxxx> wrote:

> http://oss.sgi.com/projects/netdev/archive/2000-09/msg00001.html

It works because there is always 16 bytes of scratch at the end of an
SKB more than was allocated for the actual data.  So blindly deref'ing
the nlmsg_len value is fine here.

There is no danger for OOPS's or kernel corruption.

I believe I responded exactly like this the last time this
patch was presented.