From: Cong Wang <[email protected]>
Date: Mon, 29 Oct 2018 17:35:15 -0700
> Most callers of pskb_trim_rcsum() simply drops the skb when
> it fails, however, ip_check_defrag() still continues to pass
> the skb up to stack. In that case, we should restore its previous
> csum if __pskb_trim() fails.
>
> Found this during code review.
>
> Fixes: 88078d98d1bb ("net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are
> friends")
> Cc: Eric Dumazet <[email protected]>
> Signed-off-by: Cong Wang <[email protected]>
I kind of agree with Eric that we should make all callers, including
ip_check_defrag(), fail just as with any memory allocation failure.
