From: David Howells <[email protected]> Date: Thu, 22 Aug 2019 13:22:33 +0100
> Here's a series of patches that fixes the use of skb_cow_data() in rxrpc. > The problem is that skb_cow_data() indirectly requires that the maximum > usage count on an sk_buff be 1, and it may generate an assertion failure in > pskb_expand_head() if not. It sounds like you are effectively doing a late unshare when you have to do in-place encryption. Why don't you just do an skb_unshare() at the beginning when you know that you'll need to do that?
